Datasets:

juliensimon
/

globular-star-clusters

name stringlengths 3 14	ra_deg float64 6.02 347 ⌀	dec_deg float64 -82.21 79.6 ⌀	distance_kpc float64 1.85 147 ⌀	distance_err_kpc float64 0.02 4.27 ⌀	distance_gc_kpc float64 0.6 147 ⌀	distance_gc_err_kpc float64 0.01 4.12 ⌀	metallicity_fe_h float64 -2.37 0 ⌀	reddening_e_bv float64 0 7.85 ⌀	apparent_mag_v float64 3.5 27.7	absolute_mag_v float64 -10.26 -0.35 ⌀	distance_modulus_v float64 12.4 38.1 ⌀	color_u_b float64 -0.11 2.13 ⌀	color_b_v float64 0.42 2.83 ⌀	color_v_r float64 0.41 1.24 ⌀	color_v_i float64 0.79 2.65 ⌀	spectral_type stringclasses 24 values	ellipticity float64 0 0.27 ⌀	mass_msun float64 746 3.94M ⌀	mass_err_msun float64 0 162k ⌀	mass_to_light_v float64 0.34 8.52 ⌀	mass_to_light_v_err float64 0 2.94 ⌀	log_initial_mass_msun float64 3.68 7.2 ⌀	dissolution_time_gyr float64 0.1 1.56k ⌀	core_radius_pc float64 0.02 20.6 ⌀	half_light_radius_pc float64 1.05 29 ⌀	half_mass_radius_pc float64 1.53 39.4 ⌀	tidal_radius_pc float64 8.94 735 ⌀	log_central_density_msun_pc3 float64 -0.85 7.3 ⌀	log_half_mass_density_msun_pc3 float64 -1.44 4.01 ⌀	log_central_surface_density_msun_pc2 float64 0.78 5.99 ⌀	log_half_mass_surface_density_msun_pc2 float64 -0.02 4.54 ⌀	log_half_mass_relaxation_time_yr float64 7.53 10.6 ⌀	velocity_dispersion_km_s float64 0.2 19.6 ⌀	escape_velocity_km_s float64 0.9 87.9 ⌀	radial_velocity_km_s float64 -94.7 494 ⌀	radial_velocity_err_km_s float64 0 8.9 ⌀	anisotropy_central float64 -0.45 -0.05 ⌀	anisotropy_half_mass float64 -0.15 -0 ⌀	rotation_amplitude_km_s float64 0.22 7.97 ⌀	rotation_probability_pct float64 12 100 ⌀	mass_function_slope float64 -2.79 1.53 ⌀	mass_function_slope_err float64 0.11 0.6 ⌀	mass_function_low_msun float64 0.14 99.9 ⌀	mass_function_high_msun float64 0.67 99.9 ⌀	n_radial_velocity_stars float64 0 8.22k ⌀	n_proper_motion_stars float64 0 55.7k ⌀	core_collapsed bool 2 classes	concentration_harris float64 0 0.99 ⌀
2MASS-GC01	272.09085	-19.82972	3.37	0.62	4.9	0.57	null	6.8	27.7	-6.11	33.85	null	null	null	null	null	null	41,100	0	1.8	0	5.37	5.8	0.18	3.99	5.98	30.44	5.44	1.38	4.48	2.35	9.04	2.8	11.2	null	null	-0.37	-0.1	null	null	-0.36	0.3	99.9	99.9	2	0	false	0.85
2MASS-GC02	272.4021	-20.77889	5.5	0.44	2.91	0.37	-1.08	5.16	24.6	-4.86	29.46	null	null	null	null	null	null	15,600	0	1.8	0	6	0.4	0.62	2.22	2.85	15.7	3.04	1.91	3.25	2.57	8.21	2.2	8.4	null	null	-0.33	-0.1	null	null	0.5	0.3	99.9	99.9	7	0	false	0.95
AM 1	58.75959	-49.61528	118.91	3.4	120.27	3.28	-1.7	0	15.07	-4.73	20.45	null	0.72	null	null	null	null	19,600	3,920	0.83	0.17	4.59	133.3	6.92	14.79	20.32	262.61	0.18	-0.55	1.42	0.98	9.75	0.9	3.3	null	0	-0.25	-0.05	null	null	-1.07	0.34	0.65	0.82	2	0	false	0.36
AM 4	209.08907	-27.16517	29.01	0.94	24.58	0.87	-1.3	0.05	16.49	-1.81	17.69	null	null	null	null	null	null	746	149	3.59	0.74	4.02	2.1	2.12	6.46	11.29	28.85	0.06	-1.21	0.8	0.06	8.78	0.2	0.9	null	null	-0.23	-0.07	null	null	-2.79	0.41	0.39	0.88	14	0	false	0.7
Arp 2	292.18381	-30.35564	28.73	0.34	21.39	0.33	-1.75	0.1	11.65	-5.29	17.59	null	0.86	null	null	null	null	38,700	6,430	1.89	0.32	4.96	44.2	8.33	14.21	19.34	87.04	0.36	-0.19	1.67	1.32	9.85	1.3	4.5	null	0	-0.22	-0.06	4.06	67.6	-0.75	0.14	0.41	0.8	49	0	false	0.88
BH 140	193.47292	-67.17728	4.81	0.25	6.86	0.01	null	null	9.14	null	null	null	null	null	null	null	null	61,200	5,060	2.55	0.35	5.51	6.2	4.81	6.22	9.73	51.77	1.31	0.9	2.4	2.14	9.48	2.3	8.1	null	null	-0.18	-0.09	null	null	-0.57	0.3	99.9	99.9	24	590	false	null
BH 176	null	null	null	null	null	null	0	0.54	14	-4.06	18.06	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	false	0.85
BH 261	273.5275	-28.635	6.12	0.26	2.2	0.23	-1.3	0.36	11.26	-4.19	15.19	null	null	null	null		0.03	23,800	5,680	8.52	2.06	5.69	1.3	0.36	2.94	4.45	20.63	3.48	1.52	3.48	2.41	8.79	2.2	9.1	null	null	-0.37	-0.14	null	null	-2.35	0.32	0.4	0.79	5	22	false	0
Crater	174.06875	-10.87697	147.23	4.27	147	4.12	null	null	15.74	null	null	null	null	null	null	null	null	12,100	2,380	1.29	0.29	4.37	131.6	13.66	19.56	27.62	245.78	-0.75	-1.15	0.78	0.52	9.93	0.6	2	null	null	-0.11	-0.03	null	null	-1.52	0.23	0.65	0.94	33	0	false	null
Djor 1	266.86958	-33.06639	9.88	0.65	1.82	0.59	-1.51	1.58	13.08	-6.98	20.58	null	null	null	null	null	null	84,300	13,600	1.93	0.38	5.77	4.7	0.8	4.1	5.62	25.36	3.32	1.76	3.62	2.72	9.12	3.8	14.8	362.4	null	-0.37	-0.1	null	null	-0.31	0.28	0.57	0.77	8	129	false	0.5
Djor 2	270.45438	-27.82582	8.76	0.18	0.8	0.13	-0.65	0.94	10.7	-7	16.9	null	null	null	null	null	null	134,000	23,700	3.89	0.79	6.22	2.2	1.31	4.64	6.48	15.43	2.93	1.8	3.49	2.83	9.31	3.9	15.4	null	null	-0.4	-0.08	null	null	-1.54	0.27	0.59	0.78	24	52	false	0.5
E 3	140.23779	-77.28189	7.88	0.25	9.1	0.13	-0.83	0.3	11.85	-4.12	15.47	null	null	null	null	null	null	2,560	471	1.13	0.21	4.66	1.4	1.26	4.39	5.51	19.96	1.35	0.26	1.87	1.22	8.37	0.6	2.4	null	null	-0.35	-0.12	null	null	0.88	0.24	0.35	0.85	15	50	false	0.75
ESO 280-SC06	272.275	-46.42333	20.95	0.65	13.41	0.62	-1.8	0.07	12.23	-4.87	16.87	null	null	null	null	null	null	40,100	16,500	5.29	2.39	5.54	3.4	2.46	7.02	9.69	76.05	1.67	0.73	2.5	1.94	9.36	1.8	6.8	null	null	-0.3	-0.08	null	null	-0.4	0.3	99.9	99.9	18	0	false	0.9
ESO 452-SC11	249.85417	-28.39917	7.39	0.2	2.12	0.05	-1.5	0.46	11.76	-4.02	16.02	null	null	null	null	null	null	7,320	3,010	2.14	0.89	6.27	0.1	0.63	2.48	3.26	10.55	2.67	1.4	2.87	2.12	8.15	1.4	5.5	null	null	-0.33	-0.1	null	null	0.5	0.3	99.9	99.9	14	48	false	0
Eridanus	66.18561	-21.18678	84.68	2.89	89.76	2.78	-1.43	0.02	15.02	-5.13	19.83	null	0.79	null	null	null	null	9,290	1,860	0.74	0.15	4.3	63.8	9.23	13.64	18.83	157.3	-0.37	-0.78	1	0.73	9.57	0.7	2.2	-23.6	2.1	-0.21	-0.09	null	null	-1.06	0.33	0.59	0.81	14	0	false	0.1
FSR 1716	242.625	-53.74889	7.43	0.27	4.14	0.02	null	null	13.06	null	null	null	null	null	null	null	null	56,600	19,700	8.08	2.94	5.52	5.4	1.78	3.7	5.26	34.12	2.4	1.67	3.06	2.61	9.01	3	11.1	null	null	-0.28	-0.12	null	null	-0.37	0.3	99.9	99.9	14	28	false	null
FSR 1735	253.04417	-47.05806	9.08	0.53	3.25	0.22	null	1.42	14.38	-6.45	19.35	null	null	null	null	null	null	99,800	19,800	2.04	0.46	5.83	4.4	0.52	2.08	2.69	35.32	4.04	2.79	4.17	3.42	8.56	5.8	22.2	null	null	-0.34	-0.1	null	null	-0.03	0.31	0.65	0.79	6	90	false	0.56
FSR 1758	262.8	-39.808	11.09	0.74	3.46	0.63	null	null	9.14	null	null	null	null	null	null	null	null	491,000	51,400	2.44	0.29	6.03	62.2	10.12	12.51	16.23	110	1.37	1.14	2.77	2.6	10.09	5.2	16.1	null	null	-0.05	-0.04	null	null	0.72	0.24	0.45	0.79	39	304	false	null
Gran 1	269.651	-32.02	8.27	0.67	0.6	0.25	null	null	12.4	null	null	null	null	null	null	null	null	26,100	0	1.8	0	5.64	1.5	1.37	5.72	7.79	19.05	2.18	0.85	2.71	1.94	9.14	1.8	6.8	null	null	-0.35	-0.09	null	null	-0.1	0.3	99.9	99.9	8	24	false	null
Gran 2	257.89	-24.849	15.84	1.55	7.85	1.48	null	null	12.6	null	null	null	null	null	null	null	null	42,000	0	1.8	0	5.3	7.7	2.84	8.78	12.29	55.3	1.5	0.47	2.38	1.77	9.54	1.6	6.3	null	null	-0.34	-0.06	null	null	-0.7	0.3	99.9	99.9	1	28	false	null
Gran 3	256.256	-35.496	11.47	0.75	3.76	0.66	null	null	12.6	null	null	null	null	null	null	null	null	34,500	0	1.8	0	5.43	4.3	3.73	7.04	10.09	30.21	1.26	0.61	2.24	1.84	9.4	1.7	6.1	null	null	-0.31	-0.1	null	null	-0.58	0.3	99.9	99.9	8	12	false	null
Gran 5	267.228	-24.17	4.91	0.31	3.31	0.29	null	null	12.11	null	null	null	null	null	null	null	null	22,900	9,990	1.88	0.89	6.35	0.2	0.43	1.73	2.2	21.51	3.64	2.41	3.69	2.96	8.1	3.1	11.8	null	null	-0.36	-0.15	null	null	0.54	0.3	99.9	99.9	2	24	false	null
HP 1	262.77167	-29.98167	7	0.14	1.26	0.13	-1	1.12	11.07	-6.46	18.05	null	null	null	null	null	null	137,000	19,100	3.64	0.63	6.15	2.9	0.99	3.1	4.19	18.56	3.41	2.35	3.82	3.18	9.01	5.4	20.3	45.8	0.7	-0.33	-0.13	null	null	-0.02	0.28	0.45	0.82	28	116	true	0.5
IC 1257	261.78543	-7.09306	26.59	1.43	19.27	1.36	-1.7	0.73	13.8	-6.15	19.25	null	1.38	null	1.83	null	null	17,700	0	1.8	0	5.66	1	0.99	4.13	5.53	59.77	2.42	1.1	2.83	2.05	8.82	1.7	6.7	140.2	null	-0.38	-0.13	null	null	0.12	0.3	99.9	99.9	5	0	false	0.55
IC 1276	272.68444	-7.2076	4.55	0.25	4.34	0.17	-0.75	1.08	9.92	-6.67	17.01	1.03	1.76	null	null	null	null	74,300	6,960	1.81	0.2	5.45	11.3	0.87	3.2	4.98	37.75	3.2	1.86	3.56	2.76	9.04	3.7	14.3	155.7	1.3	-0.36	-0.12	null	null	-0.51	0.3	99.9	99.9	33	300	false	0.33
IC 4499	225.07719	-82.21379	18.89	0.25	15.75	0.22	-1.53	0.23	9.84	-7.32	17.08	0.45	0.91	null	null		0.08	150,000	25,200	2.21	0.38	5.53	48.9	5.02	10.26	14.96	110.32	1.47	0.75	2.58	2.14	9.97	2.9	10.5	31.5	0.2	-0.24	-0.04	null	null	-1.22	0.15	0.28	0.81	68	134	false	0.21
Ko 1	null	null	null	null	null	null	null	0.01	17.1	-1.35	18.45	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	false	0.5
Ko 2	null	null	null	null	null	null	null	0.08	17.6	-0.35	17.95	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	null	false	0.5
Laevens 3	316.7267	14.9805	61.77	1.65	58.85	1.58	null	null	16.1	null	null	null	null	null	null	null	null	2,680	0	1.8	0	4.21	6.5	2.22	7.16	9.85	51.98	0.64	-0.47	1.39	0.75	8.95	0.5	1.9	null	null	-0.35	-0.12	null	null	-0.39	0.3	99.9	99.9	9	0	false	null
Liller 1	263.35233	-33.38956	8.06	0.34	0.74	0.07	-0.33	3.07	15.73	-7.32	24.09	null	null	null	null	null	null	1,010,000	162,000	3.01	0.74	7.2	2	0.18	1.3	2.42	38.87	6.2	4.01	5.81	4.54	8.95	19.6	87.9	null	5	-0.38	-0.06	null	null	0.21	0.3	99.9	99.9	82	0	false	0.3
Lynga 7	242.76521	-55.31778	7.9	0.16	4.35	0.03	-0.67	0.73	9.87	-6.6	16.78	null	null	null	null	null	null	67,500	9,020	1.41	0.26	5.67	4.7	1.32	3.91	4.97	38.42	2.77	1.82	3.3	2.73	8.97	3.4	12.8	8	5	-0.31	-0.13	null	null	0.3	0.16	0.32	0.8	26	294	false	0.95
NGC 104	6.02379	-72.08131	4.52	0.03	7.52	0.01	-0.72	0.04	4.08	-9.42	13.37	0.37	0.88	0.53	1.14	G4	0.09	853,000	5,350	1.87	0.09	6.24	106.3	0.61	4.03	6.44	124.63	4.72	2.61	4.8	3.6	9.7	11.9	47.4	-18	0.1	-0.4	-0.04	5	100	-0.65	0.12	0.22	0.86	7,177	27,460	false	0.07
NGC 1261	48.06754	-55.21622	16.4	0.19	18.28	0.17	-1.27	0.01	8.31	-7.8	16.09	0.13	0.72	0.45	0.93	F7	0.07	172,000	3,220	1.54	0.06	5.75	13.9	1.05	3.25	4.86	138.12	3.4	2.25	3.83	3.15	9.21	5.7	21.4	68.2	4.6	-0.34	-0.11	0.9	86.9	-0.61	0.13	0.33	0.83	345	3,179	false	0.16
NGC 1851	78.52816	-40.04655	11.95	0.13	16.69	0.11	-1.18	0.02	7.07	-8.33	15.47	0.17	0.76	0.49	1.01	F7	0.05	283,000	3,630	1.48	0.06	6.02	10.9	0.14	1.75	3.16	123.69	6.32	3.03	5.42	3.73	9	10.3	41.1	320.5	0.6	-0.41	-0.12	0.45	71.2	-0.7	0.13	0.2	0.83	8,217	4,973	false	0.86
NGC 1904	81.04584	-24.52442	13.08	0.18	19.09	0.16	-1.6	0.01	7.94	-7.86	15.59	0.06	0.65	0.44	0.91	F5	0.01	181,000	6,880	1.81	0.1	6.46	2	0.33	2.58	4.33	66.21	4.56	2.43	4.5	3.26	9.14	6.7	27.6	205.8	0.4	-0.42	-0.11	2.24	100	-1.38	0.23	0.52	0.8	1,313	372	true	0.7
NGC 2298	102.24754	-36.00531	9.83	0.17	15.07	0.14	-1.92	0.14	9.06	-6.31	15.6	0.17	0.75	0.54	1.11	F5	0.08	49,800	2,930	1.7	0.11	5.78	2.4	0.43	2.41	3.2	73.11	3.85	2.26	3.9	2.97	8.58	3.9	15.3	148.9	1.2	-0.36	-0.12	null	null	0.17	0.13	0.25	0.77	42	558	false	0.38
NGC 2419	114.53529	38.88194	88.47	2.4	95.93	2.33	-2.15	0.08	10.56	-9.42	19.83	0.07	0.66	null	1.05	F5	0.03	783,000	117,000	1.61	0.24	6.16	1,559	8.32	19.76	26.37	734.97	1.55	0.71	2.85	2.35	10.63	5.1	18.2	-20.2	0.5	-0.16	0	null	null	-1.57	0.21	0.47	0.78	183	0	false	0.37
NGC 2808	138.01291	-64.86349	10.06	0.11	11.58	0.08	-1.14	0.22	6.13	-9.39	15.59	0.28	0.92	0.57	1.18	F7	0.12	791,000	7,740	1.38	0.05	6.29	30.2	0.74	2.45	3.75	160.53	4.52	3.25	4.78	4.04	9.31	13.8	53.1	101.6	0.7	-0.36	-0.1	2.25	100	-0.6	0.14	0.22	0.83	5,589	9,104	false	0.56
NGC 288	13.1885	-26.58261	8.99	0.09	12.21	0.06	-1.32	0.03	8.1	-6.75	14.84	0.08	0.65	0.45	0.94	null	null	96,200	3,750	2.22	0.12	5.6	9.3	3.5	5.84	8.56	95.16	1.83	1.26	2.78	2.42	9.49	3.1	10.9	-45.4	0.2	-0.31	-0.1	0.42	84.3	-0.66	0.11	0.22	0.82	549	2,637	false	0.99
NGC 3201	154.40343	-46.41248	4.74	0.04	8.93	0.02	-1.59	0.24	6.77	-7.45	14.2	0.38	0.96	0.62	1.23	F6	0.12	193,000	3,220	2.59	0.1	5.61	69.4	1.66	5.17	8.68	82.34	2.82	1.55	3.44	2.7	9.66	4.5	17.3	494	0.2	-0.35	-0.06	0.8	98.8	-1.02	0.16	0.24	0.8	4,246	4,704	false	0.29
NGC 362	15.80942	-70.84878	8.83	0.1	9.62	0.06	-1.26	0.05	6.48	-8.43	14.83	0.16	0.77	0.49	1.01	F9	0.01	252,000	3,910	1.28	0.04	6.05	7.5	0.43	2.21	3.36	86.94	4.57	2.91	4.61	3.63	9.01	8.6	34	223.5	0.5	-0.38	-0.11	0.51	53	-0.76	0.13	0.26	0.82	2,342	4,286	true	0.76
NGC 4147	182.52626	18.54264	18.54	0.21	20.74	0.19	-1.8	0.02	10.29	-6.17	16.49	0.11	0.59	0.42	0.79	F2/3	0.08	45,100	10,900	1.89	0.46	5.47	4.8	0.43	2.53	3.47	93.73	3.89	2.12	3.88	2.86	8.61	3.6	14.2	183.2	0.7	-0.4	-0.11	null	null	-0.05	0.13	0.2	0.77	41	0	false	0.83
NGC 4372	186.4391	-72.65908	5.71	0.21	7.22	0.04	-2.17	0.39	7.37	-7.79	15.03	0.31	1.1	0.72	1.5	F5	0.15	189,000	6,950	1.98	0.12	5.75	20.5	3.55	5.77	8.34	74.01	2.12	1.59	3.08	2.74	9.63	4.4	15.5	72.3	1.2	-0.29	-0.11	1.36	99.2	-0.86	0.18	0.16	0.77	199	1,846	false	0.3
NGC 4590	189.86658	-26.74406	10.4	0.1	10.35	0.07	-2.23	0.05	7.99	-7.37	15.21	0.04	0.63	0.46	0.94	F2/3	0.05	128,000	5,950	1.89	0.11	5.46	55.1	1.86	4.44	7.27	78.28	2.59	1.6	3.27	2.67	9.48	4	14.8	-94.7	0.2	-0.33	-0.11	0.27	17.2	-1.17	0.14	0.18	0.77	262	861	false	0.41
NGC 4833	194.89134	-70.8765	6.48	0.08	7.13	0.02	-1.85	0.32	7.19	-8.17	15.08	0.29	0.93	0.63	1.33	F3	0.07	186,000	4,110	1.57	0.06	6.01	6.4	1.27	3.26	4.58	77.06	3.29	2.37	3.8	3.24	9.15	6	22.2	200.2	1.2	-0.31	-0.1	1.14	86.6	-0.34	0.15	0.24	0.77	176	2,853	false	0.25
NGC 5024	198.23021	18.16817	18.5	0.18	19	0.16	-2.1	0.02	7.7	-8.71	16.32	0.09	0.64	0.45	0.86	F6	0.01	502,000	8,480	1.95	0.08	6	150	1.87	6.46	10.03	183.04	3.1	1.77	3.76	2.98	9.93	6.8	25.9	-62.9	0.3	-0.33	-0.04	1.17	99.5	-1.2	0.11	0.26	0.78	338	4,130	false	0.72
NGC 5053	199.11288	17.70025	17.54	0.23	18.01	0.2	-2.27	0.01	9.92	-6.76	16.23	0.03	0.65	null	0.9		0.21	62,800	14,300	2.16	0.5	5.21	31.1	9.2	12.4	17	91.64	0.52	0.18	1.88	1.66	9.89	1.8	6	44	0.4	-0.12	-0.07	0.36	15.5	-1.09	0.14	0.23	0.78	55	48	false	0.74
NGC 5139	201.69699	-47.47947	5.43	0.05	6.5	0.01	-1.53	0.12	3.5	-10.26	13.94	0.19	0.78	0.51	1.05	F5	0.17	3,940,000	16,700	2.8	0.1	6.9	129	4.3	7.56	10.42	208.6	3.23	2.62	4.24	3.87	10.32	18	62.2	232.1	0.1	-0.19	-0.01	4.27	100	-0.8	0.11	0.17	0.8	4,593	55,653	false	0.31
NGC 5272	205.54842	28.37728	10.18	0.08	12.09	0.06	-1.5	0.01	6.39	-8.88	15.07	0.09	0.69	null	0.93	F6	0.04	409,000	6,890	1.61	0.07	5.93	76.1	0.98	3.4	5.47	129.25	3.78	2.48	4.19	3.42	9.5	8.2	32	147.6	null	-0.4	-0.1	1.75	100	-1.01	0.12	0.17	0.77	727	4,231	false	0.89
NGC 5286	206.61171	-51.37425	11.1	0.14	8.46	0.09	-1.69	0.24	7.35	-8.74	16.08	0.28	0.88	0.58	1.19	F5	0.12	424,000	9,310	1.77	0.06	6.12	13.5	0.49	2.37	3.58	95.48	4.61	3.05	4.72	3.8	9.15	10.7	41.8	57.4	1.5	-0.36	-0.1	0.76	40.6	-0.72	0.16	0.37	0.75	1,704	1,892	false	0.41
NGC 5466	211.36371	28.53444	16.12	0.16	16.48	0.14	-1.98	0	9.32	-6.98	16.02	null	0.67	null	0.82		0.11	56,100	7,550	1.35	0.19	5.2	22.6	6.15	9.55	13.75	76.7	0.9	0.41	2.09	1.78	9.75	1.9	6.5	110.7	0.2	-0.21	-0.1	0.84	81.3	-0.86	0.12	0.21	0.78	68	722	false	0.04
NGC 5634	217.40533	-5.97643	25.96	0.62	21.84	0.57	-1.88	0.05	9.51	-7.69	17.16	0.09	0.67	0.44	0.96	F3/4	0.02	247,000	47,700	2.37	0.48	5.78	34.5	0.61	4.57	7.72	192.53	4.01	1.81	4.16	2.89	9.63	5.9	24.2	-45.1	6.6	-0.39	-0.08	null	null	-0.93	0.3	99.9	99.9	50	84	false	0.07
NGC 5694	219.90125	-26.53878	34.84	0.74	29.16	0.7	-1.98	0.09	9.86	-7.83	18	0.08	0.69	0.48	0.98	F4	0.04	269,000	24,700	1.79	0.26	5.74	303.2	0.02	3.08	4.35	228.62	7.3	2.6	5.99	3.43	9.13	9.3	33.6	140.3	null	-0.36	-0.06	5.62	62.3	-0.88	0.33	0.62	0.78	136	0	false	0.89
NGC 5824	225.99416	-33.06814	31.71	0.6	25.42	0.57	-1.91	0.13	8.86	-8.85	17.94	0.12	0.75	0.51	1.05	F4	0.03	746,000	40,700	1.99	0.17	6.15	307.9	0.61	4.51	6.31	254.86	4.65	2.55	4.76	3.54	9.61	11.3	44.8	-27.5	1.5	-0.41	-0.03	6.47	99.7	-1.3	0.41	0.67	0.77	140	146	false	0.98
NGC 5897	229.35166	-21.01012	12.55	0.24	7.41	0.18	-1.9	0.09	8.48	-7.23	15.76	0.08	0.74	0.5	1.04	F7	0.08	167,000	9,810	2.37	0.16	5.72	17.2	5	7.62	10.9	72.04	1.66	1.19	2.76	2.46	9.79	3.6	12.5	101.5	1	-0.2	-0.09	1.02	82	-1.01	0.11	0.24	0.79	160	844	false	0.86
NGC 5904	229.63841	2.08103	7.48	0.06	6.27	0.02	-1.29	0.03	5.95	-8.81	14.46	0.17	0.72	0.45	0.95	F7	0.14	392,000	4,420	1.81	0.05	5.94	52.5	1.13	3.52	5.6	81.29	3.67	2.43	4.11	3.38	9.5	7.9	30.4	53.2	0.4	-0.37	-0.09	4.11	100	-0.76	0.11	0.16	0.79	463	5,285	false	0.73
NGC 5927	232.00287	-50.67303	8.27	0.11	4.77	0.03	-0.49	0.45	7.74	-7.81	15.82	0.85	1.31	0.79	1.63	G2	0.04	293,000	4,720	1.74	0.07	5.86	33.5	1.33	3.11	5.92	64.5	3.39	2.23	3.89	3.21	9.43	6.6	25.2	107.5	null	-0.31	-0.09	0.93	82.2	-0.99	0.15	0.5	0.81	582	4,302	false	0.6
NGC 5946	233.86905	-50.65971	9.64	0.51	5.2	0.26	-1.29	0.54	9.49	-7.18	16.79	0.45	1.29	0.77	1.58	F7/8	0.16	113,000	15,800	1.91	0.3	6.19	2.1	0.37	1.96	2.83	47.08	4.41	2.79	4.39	3.44	8.68	6.2	24.3	128.4	1.8	-0.38	-0.11	null	null	-0.65	0.16	0.52	0.8	38	130	true	0.5
NGC 5986	236.5125	-37.78642	10.54	0.13	4.85	0.08	-1.59	0.28	7.7	-8.44	15.96	0.3	0.9	0.58	1.22	F5	0.06	299,000	5,410	1.71	0.07	6.25	5.7	0.75	2.84	4.35	68.63	4.02	2.64	4.3	3.48	9.24	8	30.6	88.9	3.7	-0.33	-0.11	1.65	97.7	-0.59	0.17	0.43	0.76	244	3,733	false	0.23
NGC 6093	244.26004	-22.97608	10.34	0.12	3.95	0.08	-1.75	0.18	7.43	-8.23	15.56	0.21	0.84	0.56	1.11	F6	0	321,000	8,920	1.97	0.08	6.14	9.6	0.21	1.93	2.82	62.86	5.52	3.23	5.19	3.88	8.9	11.1	44.6	8.1	1.5	-0.45	-0.11	1.97	99.7	-0.45	0.16	0.23	0.76	3,040	2,285	false	0.68
NGC 6101	246.45049	-72.20219	14.45	0.19	10.36	0.15	-1.98	0.05	8.68	-6.94	16.1	0.06	0.68	0.5	null	F5	0.05	174,000	31,100	2.5	0.45	5.56	81.2	5.52	9.59	13.87	88.95	1.49	0.89	2.63	2.26	9.96	3.3	11.5	361.4	1.7	-0.24	-0.06	null	null	-0.9	0.14	0.24	0.79	71	76	false	0.8
NGC 6121	245.89674	-26.52575	1.85	0.02	6.45	0.01	-1.16	0.35	5.65	-7.19	12.82	0.43	1.03	0.69	1.42	F8	0	90,400	1,120	1.65	0.06	6.01	2.3	0.45	2.5	3.95	53.94	3.99	2.25	4.06	3.05	8.94	4.7	18.8	70.7	0.2	-0.39	-0.11	0.22	81.8	-0.33	0.15	0.44	0.8	2,865	10,976	false	0.65
NGC 6139	246.91847	-38.84878	10.04	0.45	3.51	0.28	-1.65	0.75	8.97	-8.36	17.35	0.73	1.4	0.91	1.86	F6/7	0.05	352,000	34,300	1.88	0.23	6.07	14.7	0.29	1.85	2.49	58.71	5.21	3.44	5.06	4.03	8.8	11.7	46.4	6.7	6	-0.38	-0.1	null	null	-0.17	0.17	0.55	0.79	60	296	false	0.86
NGC 6144	246.80777	-26.0235	8.15	0.13	2.5	0.02	-1.76	0.36	9.24	-6.85	15.86	0.35	0.96	0.6	1.1	F5/6	0.25	84,600	3,930	2.66	0.16	5.73	5.3	1	3.7	4.97	28.82	3.14	1.92	3.55	2.82	9.04	3.9	15	193.8	0.6	-0.34	-0.12	null	null	0.07	0.14	0.36	0.76	30	664	false	0.55
NGC 6171	248.13275	-13.05378	5.63	0.08	3.74	0.04	-1.02	0.33	8.28	-7.12	15.05	0.69	1.1	0.72	1.45	G0	0.02	61,200	1,650	1.81	0.08	5.81	3.1	0.52	2.58	3.72	35.14	3.68	2.15	3.83	2.93	8.75	3.9	15.7	-34.1	0.3	-0.33	-0.11	0.7	93.9	-0.2	0.14	0.23	0.78	403	1,872	false	0.53
NGC 6205	250.42181	36.45986	7.42	0.08	8.64	0.04	-1.53	0.02	5.81	-8.55	14.33	-0.02	0.68	null	0.86	F6	0.11	484,000	6,410	2.05	0.08	6.11	26.4	1.75	3.47	5.21	130.27	3.35	2.61	4	3.55	9.47	8.9	32.4	244.2	null	-0.26	-0.1	1.53	99.9	-0.94	0.12	0.3	0.74	426	6,668	false	0.53
NGC 6218	251.80907	-1.94853	5.11	0.05	4.57	0.02	-1.37	0.19	7.09	-7.31	14.01	0.2	0.83	0.56	1.14	F8	0.04	106,000	1,890	1.89	0.08	5.69	8.5	1.16	2.72	4.08	45.62	3.16	2.27	3.63	3.1	8.93	4.7	17.6	-41.4	0.2	-0.35	-0.13	0.93	100	-0.31	0.15	0.2	0.78	3,116	4,147	false	0.34
NGC 6229	251.74525	47.5278	30.11	0.47	29.45	0.44	-1.47	0.01	9.33	-8.06	17.45	-0.03	0.7	null	1.01	F7	0.05	247,000	81,200	1.67	0.55	5.91	16.2	1.11	3.12	4.8	191.54	3.56	2.44	3.99	3.33	9.27	6.7	25.3	154.2	null	-0.34	-0.11	null	null	-1.47	0.48	0.65	0.79	20	0	false	0.5
NGC 6235	253.35568	-22.17745	11.94	0.38	4.42	0.33	-1.28	0.31	9.62	-6.29	16.26	0.44	1.05	0.66	1.36	F9	0.13	96,000	18,000	2.3	0.44	5.47	14.3	1.16	3.36	5.07	36.93	3.04	1.94	3.51	2.87	9.12	4.1	15.5	87.3	3.4	-0.36	-0.11	null	null	-0.59	0.3	99.9	99.9	21	120	false	0.53
NGC 6254	254.28772	-4.10031	5.07	0.06	4.35	0.03	-1.56	0.28	6.61	-7.48	14.08	0.23	0.9	0.53	1.21	F3	0	189,000	2,960	1.71	0.07	5.83	12.8	0.74	2.99	4.75	53.76	3.79	2.32	4.07	3.21	9.22	6.2	23.9	75.2	0.7	-0.38	-0.12	0.26	12	-0.6	0.13	0.22	0.78	5,446	2,796	false	0.38
NGC 6256	254.88611	-37.12097	7.24	0.29	1.94	0.11	-1.02	1.09	10.56	-7.15	18.44	1.03	1.69	null	null	null	null	111,000	2,780	1.87	0.2	5.89	4.6	0.07	2.94	4.21	27.28	6.18	2.25	5.19	3.08	9.02	5.4	19.8	101.4	1.9	-0.35	-0.12	null	null	-1.12	0.19	0.46	0.79	14	1,838	true	0.5
NGC 6266	255.30415	-30.11339	6.03	0.09	2.46	0.07	-1.18	0.47	6.6	-9.18	15.63	0.52	1.19	0.74	1.58	F9	0.01	581,000	4,090	2.15	0.12	6.26	17.4	0.23	1.74	2.91	51.41	5.93	3.46	5.38	4.12	9.07	14.8	59.3	-70.1	1.4	-0.38	-0.1	6.22	100	-1.14	0.19	0.53	0.81	6,899	330	true	0.71
NGC 6273	255.65749	-26.26797	8.34	0.16	1.43	0.03	-1.74	0.38	6.88	-9.13	15.9	0.35	1.03	0.66	1.35	F7	0.27	719,000	36,700	2.32	0.15	6.3	24.3	0.99	3.16	4.7	39.68	4.12	2.92	4.51	3.8	9.47	11.6	44.8	135	4.1	-0.36	-0.09	4.19	100	-1.33	0.2	0.43	0.76	306	671	false	0.53
NGC 6284	256.12011	-24.7648	14.21	0.42	6.32	0.4	-1.26	0.28	8.99	-7.96	16.79	0.4	0.99	0.65	1.31	F9	0.03	174,000	29,300	1.79	0.33	5.92	7.3	0.27	2.94	4.04	73.28	4.77	2.49	4.6	3.3	9.03	6.8	27.6	27.5	1.7	-0.38	-0.1	null	null	-0.05	0.16	0.43	0.82	39	62	true	0.5
NGC 6287	256.2889	-22.70801	7.93	0.37	1.57	0.04	-2.1	0.6	9.4	-7.36	16.72	0.52	1.2	0.83	1.74	F5	0.13	130,000	16,000	2.52	0.35	6	4.4	0.32	1.94	2.81	22.61	6.01	2.84	4.97	3.49	8.71	6.8	26.8	288.7	null	-0.35	-0.12	null	null	-0.57	0.16	0.36	0.76	8	300	false	0.38
NGC 6293	257.5425	-26.58208	9.19	0.28	1.6	0.18	-1.99	0.36	8.4	-7.78	16	0.29	0.96	0.63	1.28	F3	0.03	142,000	11,600	1.77	0.23	6.32	2.6	0.06	2.21	3.18	24.19	6.66	2.73	5.54	3.43	8.83	7.5	27.4	146.2	null	-0.38	-0.13	null	null	-0.5	0.2	0.24	0.78	412	140	true	0.5
NGC 6304	258.6344	-29.46203	6.15	0.15	2.19	0.13	-0.45	0.54	8.18	-7.3	15.52	0.82	1.31	0.77	1.7	G3	0.02	103,000	3,560	1.29	0.09	5.79	5.2	0.39	1.83	3.05	27.27	4.32	2.71	4.3	3.35	8.67	5.7	22.8	107.3	3.6	-0.36	-0.09	1.3	89.4	-0.4	0.14	0.43	0.89	205	1,007	false	0.8
NGC 6316	259.15542	-28.14011	11.15	0.39	3.16	0.36	-0.45	0.54	9.01	-8.34	16.77	0.62	1.39	0.85	1.8	G2	0.04	347,000	43,700	2.83	0.57	6.18	10.2	0.74	3.15	6.08	47.48	4.01	2.28	4.27	3.26	9.46	7.6	30.3	71.4	8.9	-0.35	-0.05	null	null	-0.61	0.32	0.57	0.84	74	80	false	0.65
NGC 6325	259.49633	-23.76768	7.53	0.32	1.28	0.13	-1.25	0.91	10.9	-6.96	17.29	0.85	1.66	null	2.15	G0	0.12	61,900	2,130	2.2	0.11	5.99	1.6	0.11	1.72	2.38	20.42	5.29	2.74	4.75	3.32	8.41	5.3	20.6	29.8	1.8	-0.36	-0.12	null	null	-0.3	0.3	0.5	0.8	45	1,095	true	0.5
NGC 6333	259.79909	-18.51626	8.3	0.14	1.73	0.02	-1.77	0.38	7.65	-7.95	15.67	0.32	0.97	0.63	1.33	F5/6	0.04	308,000	23,200	2.04	0.17	6.03	13.9	0.81	2.74	3.81	33.26	3.99	2.82	4.31	3.61	9.11	8.6	32.4	229.1	7	-0.33	-0.11	null	null	-0.39	0.21	0.36	0.78	51	576	false	0.25
NGC 6341	259.28076	43.13594	8.5	0.07	9.85	0.04	-2.31	0.02	6.51	-8.21	14.65	0.01	0.63	null	0.88	F2	0.1	273,000	4,740	1.68	0.05	5.98	13.9	0.29	2.03	3.59	113	6.3	2.85	5.32	3.6	9.1	9.1	36.4	120	null	-0.42	-0.12	1.46	99.9	-0.83	0.12	0.15	0.77	397	3,338	false	0.68
NGC 6342	260.29157	-19.58766	8.01	0.23	1.54	0.02	-0.55	0.46	9.86	-6.42	16.08	0.77	1.26	0.8	1.57	G3/4	0.18	37,700	999	1.63	0.11	5.99	1	0.17	1.48	1.86	14.97	4.82	2.85	4.47	3.32	8.08	4.6	18.4	115.7	1.4	-0.37	-0.12	null	null	0.65	0.17	0.41	0.82	52	1,719	true	0.5
NGC 6352	261.37128	-48.42217	5.54	0.07	3.51	0.04	-0.64	0.22	8.06	-6.47	14.43	0.64	1.06	0.66	1.5	G4	0.07	60,200	2,120	2.05	0.1	5.49	6.4	0.85	3.23	4.8	31.54	3.14	1.81	3.49	2.71	8.98	3.4	13.2	137	null	-0.37	-0.11	null	null	-0.37	0.16	0.23	0.83	67	1,394	false	0.1
NGC 6355	260.99353	-26.35283	8.65	0.22	0.93	0.12	-1.37	0.77	10.04	-8.07	17.21	0.72	1.48	0.93	1.83	G0	null	99,100	2,570	1.61	0.11	6.11	2.2	0.2	2.36	3.34	14.57	4.86	2.5	4.56	3.23	8.79	5.6	21.6	176.9	null	-0.37	-0.13	null	null	-0.5	0.19	0.5	0.78	48	1,822	true	0.5
NGC 6356	260.8958	-17.81303	15.66	0.92	7.86	0.86	-0.4	0.28	8.32	-8.51	16.76	0.63	1.13	0.69	1.45	G3	0.03	565,000	80,100	2.59	0.4	6.09	62.3	1.53	3.99	7.73	118.2	3.38	2.19	3.98	3.28	9.78	8.1	31.1	27	4.3	-0.3	-0.06	null	null	-0.96	0.3	99.9	99.9	54	98	false	0.59
NGC 6362	262.9791	-67.04833	7.65	0.07	5.2	0.01	-0.99	0.09	7.45	-6.95	14.68	0.29	0.85	0.56	1.14	G3	0.07	117,000	3,020	1.73	0.08	5.65	11.5	2.9	5.13	7.24	50.47	2.15	1.57	3.02	2.65	9.39	3.7	13.1	-13.1	0.6	-0.23	-0.1	0.47	75.2	-0.49	0.15	0.21	0.8	572	2,042	false	0.09
NGC 6366	261.93436	-5.07986	3.44	0.05	5.23	0.04	-0.59	0.71	8.85	-5.74	14.94	0.97	1.44	null	null		0.16	46,600	1,910	2.12	0.12	5.47	4.7	2.34	3.78	6.42	37.85	1.99	1.32	2.77	2.37	9.14	2.5	9.1	122.2	null	-0.28	-0.12	0.63	66.6	-0.32	0.17	0.39	0.83	232	1,455	false	0.74
NGC 6380	263.61861	-39.06953	9.61	0.3	2.15	0.21	-0.75	1.17	10.7	-7.5	18.81	null	2.01	null	null	null	null	341,000	4,820	2.96	0.33	6.56	2.8	0.95	3.14	4.42	40.24	3.85	2.68	4.22	3.53	9.24	8.3	31.8	-3.6	2.5	-0.33	-0.09	null	null	-0.54	0.17	0.53	0.83	70	5,783	true	0.55
NGC 6388	264.07178	-44.7355	11.17	0.16	3.99	0.13	-0.55	0.37	6.82	-9.41	16.13	0.66	1.17	0.71	1.47	G2	0.01	1,310,000	11,400	2.3	0.07	6.48	40.1	0.48	2.61	5.37	96.85	5.18	3	5.18	3.93	9.64	16.3	60	80.1	0.8	-0.16	-0	1.51	99.5	-1.01	0.18	0.4	0.84	6,008	12,692	false	0.75
NGC 6397	265.17538	-53.67434	2.48	0.02	6.01	0.02	-2.02	0.18	5.45	-6.64	12.37	0.12	0.73	0.49	1.03	F4	0.07	82,400	1,350	1.42	0.06	5.57	8.9	0.14	2.17	3.16	49.64	5.19	2.5	4.72	3.2	8.71	5.4	21.5	18.8	0.1	-0.39	-0.11	0.48	100	-0.32	0.13	0.34	0.78	3,434	4,417	true	0.5
NGC 6401	264.65219	-23.9096	7.44	0.22	1.03	0.14	-1.02	0.72	9.97	-7.9	17.35	0.93	1.58	1.02	2.01	F9	0.15	121,000	2,060	1.83	0.09	6.32	1.8	0.36	2.31	3.17	15.81	4.4	2.66	4.36	3.37	8.8	6	23.6	-65	8.6	-0.36	-0.13	null	null	-0.4	0.17	0.4	0.81	25	3,590	false	0.69
NGC 6402	264.40065	-3.24592	9.14	0.25	3.97	0.11	-1.28	0.6	7.87	-9.1	16.69	0.57	1.25	0.81	1.64	F4	0.11	595,000	29,400	2.13	0.16	6.36	10.8	2	3.54	4.92	73.95	3.35	2.78	4.05	3.69	9.42	10.2	35.6	-66.1	1.8	-0.28	-0.12	1.58	97.7	-0.81	0.15	0.38	0.81	302	720	false	0.99
NGC 6426	266.22796	3.17014	20.71	0.35	14.45	0.32	-2.15	0.36	11.13	-6.67	17.68	0.35	1.02	null	1.28	G1	0.15	73,100	24,400	2.03	0.68	5.41	14.3	2.62	5.2	7.88	88.69	2	1.25	2.83	2.37	9.4	2.8	10.3	null	null	-0.33	-0.11	null	null	-1.07	0.14	0.24	0.78	33	100	false	0.7
NGC 6440	267.22017	-20.36042	8.25	0.24	1.23	0.03	-0.36	1.07	8.97	-8.75	17.95	1.47	1.97	1.24	2.51	G4	0.01	569,000	45,300	1.81	0.26	6.79	3	0.37	1.32	2.8	33.88	5.1	3.49	5.09	4.14	9.01	14	55.6	-76.6	2.7	-0.38	-0.1	3.93	87.5	-0.34	0.21	0.52	0.85	220	149	false	0.62
NGC 6441	267.55441	-37.05145	12.73	0.16	4.78	0.15	-0.46	0.47	7.12	-9.63	16.78	0.81	1.27	0.79	1.62	G2	0.02	1,390,000	14,700	1.86	0.14	6.48	57	0.64	2.14	4.3	108.31	4.95	3.33	5.1	4.16	9.5	17.6	69.4	16.5	1	-0.33	-0.05	1.52	55.3	-0.88	0.21	0.49	0.81	5,533	5,975	false	0.74
NGC 6453	267.71551	-34.59848	10.07	0.22	2.1	0.19	-1.5	0.64	9.19	-7.22	17.3	0.68	1.31	0.99	2	F8	0.09	168,000	3,690	1.49	0.18	6.31	2.5	0.13	2.76	3.87	32.92	5.49	2.54	4.95	3.33	9	7.1	27.9	-83.7	8.3	-0.38	-0.11	null	null	-0.61	0.19	0.43	0.78	21	2,444	true	0.5
NGC 6496	269.76535	-44.26595	9.64	0.15	2.81	0.09	-0.46	0.15	8.65	-7.2	15.74	0.45	0.98	null	null	G4	0.16	74,400	7,400	1.76	0.23	5.54	7.4	2.55	4.26	7.01	29.12	2.08	1.41	2.9	2.48	9.26	3	10.8	112.7	null	-0.24	-0.1	1.21	97.1	-0.25	0.16	0.31	0.82	203	585	false	0.7
NGC 6517	270.46075	-8.95878	9.23	0.56	3.24	0.26	-1.23	1.08	10.69	-8.25	18.48	0.85	1.75	null	2.31	F8	0.06	216,000	24,300	2.6	0.32	6.29	3.1	0.14	1.7	2.88	47.36	5.63	3.04	5.16	3.7	8.87	9.2	37.3	-39.6	8	-0.41	-0.11	null	null	-1.38	0.19	0.54	0.79	27	354	false	0.82
NGC 6522	270.89196	-30.03397	7.29	0.21	1.04	0.17	-1.34	0.48	8.28	-7.65	15.92	0.65	1.21	0.76	1.51	F7/8	0.06	214,000	11,300	2.46	0.15	6.4	2.6	0.39	2.48	3.15	15.36	4.62	2.91	4.61	3.61	8.85	8.2	32.4	-21.1	3.4	-0.35	-0.09	1.43	24.4	0.25	0.21	0.43	0.78	851	60	true	0.5
NGC 6528	271.2067	-30.05578	7.83	0.24	0.7	0.1	-0.11	0.54	9.71	-6.57	16.17	1.09	1.53	0.9	1.74	G3	0.11	94,400	9,140	2.97	0.4	6.33	1.1	0.27	2.45	5.01	10.98	4.43	1.96	4.27	2.85	9.03	4.6	19	206.6	1.4	-0.4	-0.07	null	null	-0.26	0.22	0.52	0.84	286	30	false	0.5

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Milky Way Globular Star Clusters

A youthful globular star cluster observed by Hubble

Credit: NASA/ESA/Hubble

Part of a dataset collection on Hugging Face.

Dataset description

Comprehensive catalog of Milky Way globular clusters merging the Harris (2010) and Baumgardt databases. Includes positions, distances, metallicities, masses, velocity dispersions, structural parameters, and photometry.

Globular clusters are ancient, gravitationally bound collections of stars orbiting the Milky Way. They are among the oldest objects in the Galaxy (10--13 Gyr), with typical masses of 10⁴--10⁶ M☉ and half-light radii of a few parsecs. Their metallicities, dynamics, and spatial distribution encode the formation and assembly history of the Milky Way.

This dataset combines Harris (2010) photometric and chemical data with Baumgardt's dynamical parameters derived from N-body fits to modern astrometric and spectroscopic data, providing the most complete per-cluster view available.

Globular clusters formed in the early universe, within the first few billion years after the Big Bang, and their metallicity distribution preserves a fossil record of the chemical enrichment conditions at that epoch. The bimodal metallicity distribution observed in many galaxies -- with a metal-poor peak near [Fe/H] ~ -1.5 and a metal-rich peak near [Fe/H] ~ -0.5 -- is widely interpreted as evidence for two distinct formation channels: an in-situ population formed during the early collapse of the proto-Galaxy, and an accreted population brought in by satellite galaxies that were subsequently tidally disrupted. The combination of metallicity, age, and orbital parameters in this catalog enables assignment of individual clusters to these formation channels, linking them to specific accretion events identified in the Gaia era such as the Gaia-Enceladus/Sausage merger and the Sequoia and Helmi streams.

The dynamical parameters from the Baumgardt database are derived from sophisticated N-body models fit simultaneously to Gaia proper motion profiles and HST/ground-based velocity dispersion profiles. These fits yield not only total masses but also the internal mass function slope, which encodes the degree to which a cluster has been stripped of its low-mass stars by two-body relaxation and tidal interactions. Clusters with flat or inverted mass functions have lost a large fraction of their initial low-mass population, while those retaining steep mass functions are dynamically younger. The dissolution timescale provided in this catalog predicts how long each cluster will survive before being fully disrupted by the Galactic tidal field.

Core-collapsed clusters -- flagged in this catalog from the Harris compilation -- represent systems that have undergone gravothermal catastrophe, a runaway contraction of the core driven by the negative heat capacity of self-gravitating systems. In these clusters, the core has contracted to a cusp-like density profile sustained by binary star heating, and the central density can exceed 10^6 solar masses per cubic parsec. The structural parameters (core radius, half-light radius, tidal radius, concentration) together with the velocity dispersion and anisotropy profiles provide a complete dynamical portrait of each cluster, suitable for comparison with theoretical models and numerical simulations.

Schema

Column	Type	Description	Sample	Null %
`name`	object	Cluster name (e.g. 'NGC 104', 'Pal 5'); Baumgardt name where available, Harris name otherwise	2MASS-GC01	0.0%
`ra_deg`	float64	Right ascension of the cluster center in decimal degrees, J2000.0 epoch	272.09085	1.8%
`dec_deg`	float64	Declination of the cluster center in decimal degrees, J2000.0 epoch	-19.82972	1.8%
`distance_kpc`	float64	Distance from the Sun (kpc; 1 kpc = 3260 light-years); derived from Baumgardt N-body fits to Gaia proper motions and HST data; typical range 2–100 kpc	3.37	1.8%
`distance_err_kpc`	float64	1-sigma uncertainty on the heliocentric distance (kpc) from the Baumgardt N-body model fits; null for Harris-only clusters	0.62	1.8%
`distance_gc_kpc`	float64	Distance from the Galactic center (kpc), assuming R☉ = 8.1 kpc; used to study spatial distribution and orbital properties	4.9	1.8%
`distance_gc_err_kpc`	float64	1-sigma uncertainty on the Galactocentric distance (kpc); null for Harris-only clusters	0.57	1.8%
`metallicity_fe_h`	float64	Iron abundance [Fe/H] in dex (log₁₀ of Fe/H relative to the Sun); dex = decimal exponent, so [Fe/H] = -1 means 1/10 solar iron; typical globular cluster range -2.5 to +0.5; lower values indicate older, more metal-poor clusters	-1.08	10.6%
`reddening_e_bv`	float64	Foreground dust reddening E(B−V) in magnitudes from the Harris catalog; measures differential extinction between B and V bands due to interstellar dust along the line of sight; must be corrected before comparing intrinsic colors	6.8	7.6%
`apparent_mag_v`	float64	Apparent integrated V-band (550 nm) magnitude summing light from all cluster member stars; this is the total cluster flux, not a single star's brightness; typical range 5–16 mag; Baumgardt value where available, Harris otherwise	27.7	0.0%
`absolute_mag_v`	float64	Absolute integrated V-band magnitude (apparent magnitude corrected for distance and reddening); proxy for total stellar luminosity; typical range -5 to -10 mag; null for Baumgardt-only clusters	-6.11	8.2%
`distance_modulus_v`	float64	V-band distance modulus μ = m_V − M_V (mag), where μ = 5 log₁₀(d/10 pc); includes reddening; null for Baumgardt-only clusters	33.85	7.6%
`color_u_b`	float64	Integrated U−B color index (mag) from Harris catalog; measures the integrated stellar population color; redder values indicate more dust reddening or more metal-rich/older populations; null for Baumgardt-only clusters	1.03	36.5%
`color_b_v`	float64	Integrated B−V color index (mag) from Harris catalog; measures the integrated stellar population color; redder values indicate more dust reddening or more metal-rich/older populations; null for Baumgardt-only clusters	0.72	31.2%
`color_v_r`	float64	Integrated V−R color index (mag) from Harris catalog; measures the integrated stellar population color; redder values indicate more dust reddening or more metal-rich/older populations; null for Baumgardt-only clusters	0.53	51.8%
`color_v_i`	float64	Integrated V−I color index (mag) from Harris catalog; measures the integrated stellar population color; redder values indicate more dust reddening or more metal-rich/older populations; null for Baumgardt-only clusters	1.83	42.9%
`spectral_type`	object	Integrated spectral type of the cluster from the Harris catalog (e.g. 'F5', 'G0'); reflects the luminosity-weighted mean stellar temperature; null for most clusters		39.4%
`ellipticity`	float64	Projected ellipticity e = 1 − b/a where a and b are the major and minor axis lengths; 0 = perfectly circular, values up to ~0.3 for the most flattened clusters; from Harris catalog	0.03	41.2%
`mass_msun`	float64	Total dynamical mass (M☉) from Baumgardt N-body fits to velocity dispersion profiles; typical range 10⁴–10⁶ M☉; null for Harris-only clusters	41100.0	1.8%
`mass_err_msun`	float64	1-sigma uncertainty on the total dynamical mass (M☉) from the N-body fit; null for Harris-only clusters	0.0	1.8%
`mass_to_light_v`	float64	Present-day V-band mass-to-light ratio (M☉/L☉); higher values indicate more mass in faint or dark remnants (neutron stars, black holes, white dwarfs); typical range 1–4 M☉/L☉	1.8	1.8%
`mass_to_light_v_err`	float64	1-sigma uncertainty on the V-band mass-to-light ratio (M☉/L☉)	0.0	1.8%
`log_initial_mass_msun`	float64	Log₁₀ of the initial (birth) cluster mass (M☉) estimated from the present-day mass and the modeled mass lost to stellar evolution and tidal stripping	5.37	1.8%
`dissolution_time_gyr`	float64	Predicted time until the cluster is fully disrupted by the Galactic tidal field (Gyr), based on current mass and orbit; null for Harris-only clusters	5.8	1.8%
`core_radius_pc`	float64	Core radius r_c (pc): the projected radius at which the surface brightness falls to half its central value in a King model; small values (~0.1 pc) indicate a dense or core-collapsed cluster	0.18	1.8%
`half_light_radius_pc`	float64	Projected (2D) half-light radius r_h (pc): the radius enclosing half the cluster's total V-band luminosity as seen on the sky; the most directly observable structural size parameter	3.99	1.8%
`half_mass_radius_pc`	float64	Three-dimensional half-mass radius r_hm (pc) from N-body fits: the radius enclosing half the total cluster mass in 3D; slightly larger than the projected half-light radius	5.98	1.8%
`tidal_radius_pc`	float64	Tidal (Jacobi) radius r_t (pc): the distance from the cluster center at which the Galactic tidal force equals the cluster's self-gravity; stars beyond this radius are unbound	30.44	1.8%
`log_central_density_msun_pc3`	float64	Log₁₀ of the central mass density (M☉/pc³) from N-body fits; core-collapsed clusters can exceed 10⁶ M☉/pc³	5.44	1.8%
`log_half_mass_density_msun_pc3`	float64	Log₁₀ of the mean mass density within the 3D half-mass radius (M☉/pc³); less sensitive to core-collapse than central density	1.38	1.8%
`log_central_surface_density_msun_pc2`	float64	Log₁₀ of the projected central surface mass density (M☉/pc²); the column density at the cluster center	4.48	1.8%
`log_half_mass_surface_density_msun_pc2`	float64	Log₁₀ of the mean projected surface mass density within the projected half-mass radius (M☉/pc²)	2.35	1.8%
`log_half_mass_relaxation_time_yr`	float64	Log₁₀ of the half-mass relaxation time (yr): the timescale on which two-body gravitational encounters redistribute energy and erase memory of initial conditions; clusters with log T_rh < 10 are dynamically evolved	9.04	1.8%
`velocity_dispersion_km_s`	float64	Central 1D line-of-sight velocity dispersion σ₀ (km/s) from N-body fits; related to cluster mass via the virial theorem; typical range 2–20 km/s; null for Harris-only clusters	2.8	1.8%
`escape_velocity_km_s`	float64	Central escape velocity v_esc (km/s) from the cluster potential; stars moving faster than this are unbound; typical range 10–50 km/s	11.2	1.8%
`radial_velocity_km_s`	float64	Heliocentric line-of-sight (systemic) radial velocity of the cluster (km/s) from Harris catalog; positive = receding; used to determine cluster orbits	362.4	23.5%
`radial_velocity_err_km_s`	float64	1-sigma uncertainty on the systemic radial velocity (km/s)	0.0	34.7%
`anisotropy_central`	float64	Velocity anisotropy parameter η at the center; η > 0 indicates radially biased orbits, η < 0 tangentially biased; isotropic = 0	-0.37	1.8%
`anisotropy_half_mass`	float64	Velocity anisotropy parameter η at the half-mass radius; η > 0 indicates radially biased orbits, η < 0 tangentially biased; isotropic = 0	-0.1	1.8%
`rotation_amplitude_km_s`	float64	Peak amplitude of internal cluster rotation (km/s) from Baumgardt fits; higher values indicate significant solid-body-like rotation	4.06	63.5%
`rotation_probability_pct`	float64	Statistical probability (%) that the detected rotation signal is real rather than noise; values > 95% are considered significant detections	67.6	63.5%
`mass_function_slope`	float64	Present-day stellar mass function slope α (where dN/dm ∝ m^α) over the fitted mass range; a steep negative slope (e.g. α ~ -2) means many low-mass stars; a flat or positive slope indicates preferential loss of low-mass stars through tidal stripping	-0.36	1.8%
`mass_function_slope_err`	float64	1-sigma uncertainty on the present-day mass function slope α	0.3	1.8%
`mass_function_low_msun`	float64	Lower stellar mass limit (M☉) over which the mass function slope was fitted	99.9	1.8%
`mass_function_high_msun`	float64	Upper stellar mass limit (M☉) over which the mass function slope was fitted	99.9	1.8%
`n_radial_velocity_stars`	float64	Number of individual member stars with radial velocity measurements used in the Baumgardt N-body fit; larger samples yield more reliable dispersion profiles	2.0	1.8%
`n_proper_motion_stars`	float64	Number of individual member stars with proper motion measurements (mostly from Gaia DR3) used in the N-body fit	0.0	1.8%
`core_collapsed`	bool	True if the cluster has undergone core collapse (gravothermal catastrophe), as flagged in the Harris catalog; core-collapsed clusters show a cusp-like central brightness profile rather than a flat core	False	0.0%
`concentration_harris`	float64	King-model concentration parameter c = log₁₀(r_t / r_c), the log ratio of tidal to core radius; higher c means a more centrally concentrated cluster; null for Baumgardt-only clusters; core-collapsed clusters are assigned c = 2.5 by convention	0.85	8.2%

Quick stats

170 Milky Way globular clusters
167 with dynamical mass estimates (7.46e+02–3.94e+06 M☉)
152 with metallicity measurements (-2.37 to 0.00 dex)
167 with central velocity dispersions
29 identified as core-collapsed

Usage

from datasets import load_dataset
import matplotlib.pyplot as plt

ds = load_dataset("juliensimon/globular-star-clusters", split="train")
df = ds.to_pandas()

# Most massive clusters
massive = df.nlargest(10, "mass_msun")[["name", "mass_msun", "metallicity_fe_h"]]

# Metal-poor vs metal-rich populations
metal_poor = df[df["metallicity_fe_h"] < -1.5]
metal_rich = df[df["metallicity_fe_h"] >= -1.5]

# Core-collapsed clusters
cc = df[df["core_collapsed"]]

# Mass-metallicity relation
plt.scatter(df["metallicity_fe_h"], df["mass_msun"].apply(lambda x: x if x else None))
plt.xlabel("[Fe/H]"); plt.ylabel("Mass (M☉)"); plt.yscale("log")
plt.title("Globular Cluster Mass vs Metallicity")
plt.tight_layout()
plt.show()

Data source

https://people.smp.uq.edu.au/HolgerBaumgardt/globular/

Related datasets

Citation

@dataset{globular_star_clusters,
  title = {Milky Way Globular Star Clusters},
  author = {juliensimon},
  year = {2026},
  url = {https://huggingface.co/datasets/juliensimon/globular-star-clusters},
  publisher = {Hugging Face}
}