Datasets:

juliensimon
/

brown-dwarf-catalog

recno int64 1 14.2k	spc stringlengths 11 11	2mass stringlengths 16 16	gaiadr2 float64 630,505B 6,917,290,163B ⌀	ra_deg float64 0.12 360	dec_deg float64 -88.7 89.4	g_mag float64 5.42 21.3 ⌀	imag float64 4.67 20.3	j_mag float64 3.55 16.6	h_mag float64 2.9 15.6	ks_mag float64 2.54 15.5	distance_pc float64 1.3 40	e_dist float64 0 15.3	mass float64 0.04 0.72	e_mass float64 0 0.17 ⌀	radius float64 0.07 0.76	e_radius float64 0.01 0.42 ⌀	teff_k float64 1.28k 4.76k	e_teff float64 90 1.36k	spectral_type float64 0 19.2	e_sptype float64 0.1 5.3	snr_jwst float64 0.17 7.62	snr_tess float64 0.3 172	snr_spc float64 0.28 27.3
1,800	Sp0306+0157	03062676+0157538	630,505,494,719,360	46.611406	1.965175	8.45	7.59	6.49	5.84	5.65	14.7299	0.0112	0.63	0.02	0.63	0.07	4,062	110	1.2	0.3	0.24	6.45	0.44
1,828	Sp0309+0216	03090989+0216070	756,571,374,829,440	47.29114	2.2686	16.64	14.84	12.99	12.42	12.06	38.1551	0.2056	0.11	0	0.13	0.02	2,915	105	5.5	1	2.73	2.28	7.78
1,838	Sp0310+0234	03100340+0234269	769,456,276,704,128	47.514098	2.574196	14.63	13.11	11.29	10.82	10.53	18.8251	0.035	0.11	0	0.14	0.02	2,938	104	5.3	0.9	3.62	8.4	10.54
1,867	Sp0312+0409	03122376+0409081	2,729,232,673,961,216	48.099037	4.152266	13.93	12.6	11.24	10.72	10.46	36.7074	0.0924	0.21	0.01	0.25	0.03	3,188	104	3.9	0.7	1.28	3.54	3.31
1,875	Sp0313+0446	03132299+0446293	3,179,036,008,830,848	48.345516	4.774818	12.12	10.2	8.78	8.21	7.83	8.6093	0.0065	0.17	0.01	0.19	0.02	3,148	104	4.1	0.8	2.65	34.14	6.39
1,798	Sp0306+0432	03062380+0432507	3,499,474,928,879,104	46.59917	4.54761	14.59	12.7	11.34	10.85	10.27	38.751	0.0924	0.25	0.01	0.25	0.03	3,186	105	4	0.7	1.27	3.22	3.22
1,841	Sp0310+0554	03101547+0554311	4,267,552,520,347,776	47.564464	5.908742	10.88	9.61	8.36	7.75	7.53	18.1049	0.0182	0.4	0.01	0.41	0.05	3,491	104	2.7	0.5	0.57	8.97	1.22
1,663	Sp0252+0316	02524140+0316498	4,656,161,161,454,464	43.172456	3.280549	11.3	10.17	9.01	8.33	8.13	38.255	0.0922	0.57	0.02	0.55	0.06	3,870	105	1.6	0.4	0.31	3.31	0.6
1,601	Sp0247+0456	02470843+0456179	5,837,071,009,282,816	41.785173	4.938456	15.65	14.1	12.29	11.82	11.51	30.6449	0.1051	0.11	0	0.15	0.02	2,954	104	5.2	0.9	2.82	4.44	8.46
1,647	Sp0251+0613	02515065+0613414	6,452,209,110,182,016	42.96106	6.228202	12.1	10.68	9.41	8.77	8.54	24.6347	0.0281	0.35	0.01	0.35	0.04	3,411	105	3	0.6	0.74	5.97	1.65
1,734	Sp0300+0559	03000408+0559273	6,989,977,670,532,096	45.017071	5.990926	13.13	11.63	10.32	9.76	9.5	31.2506	0.0879	0.29	0.01	0.31	0.04	3,295	104	3.5	0.7	0.92	4.87	2.16
1,748	Sp0301+0829	03014785+0829446	8,684,153,290,176,000	45.449427	8.495711	14.59	13.01	11.57	11.03	10.73	30.3767	0.0666	0.16	0	0.18	0.02	3,139	104	4.2	0.8	2.22	5.11	6.12
1,727	Sp0259+0828	02592910+0828148	8,777,268,181,161,216	44.871287	8.470776	16.79	14.82	12.99	12.43	12.02	38.9686	0.2234	0.11	0	0.14	0.02	2,928	105	5.4	1	2.68	2.23	7.57
1,735	Sp0300+0850	03000444+0850303	8,896,496,473,276,288	45.018548	8.841819	14.56	12.81	11.45	10.82	10.58	37.6465	0.1145	0.21	0.01	0.24	0.03	3,181	104	4	0.7	1.42	3.47	3.74
1,990	Sp0323+0805	03234657+0805058	10,813,357,557,424,768	50.944077	8.084959	15.97	14.21	12.55	12.04	11.74	38.4679	0.1529	0.13	0	0.16	0.02	3,037	104	4.7	0.9	2.35	3.16	6.98
2,072	Sp0331+0857	03315116+0857317	11,771,719,380,131,328	52.963206	8.958781	12.92	11.38	10.07	9.48	9.23	27.7567	0.0477	0.29	0.01	0.31	0.04	3,301	104	3.4	0.7	0.95	5.5	2.21
1,998	Sp0324+0916	03241843+0916019	12,688,815,156,948,736	51.076814	9.267218	13.68	12.11	10.77	10.22	9.91	33.3658	0.1087	0.25	0.01	0.28	0.03	3,230	104	3.8	0.7	1.11	4.65	2.72
2,012	Sp0325+0951	03254578+0951591	12,785,366,021,729,280	51.440761	9.866441	13.17	11.51	10.25	9.64	9.39	38.4977	0.1034	0.37	0.01	0.37	0.04	3,434	104	2.9	0.6	0.65	3.43	1.45
2,107	Sp0335+1017	03355322+1017090	13,000,080,026,782,464	53.971811	10.285859	13.61	11.98	10.57	10.02	9.75	20.5435	0.0317	0.16	0.01	0.2	0.02	3,154	104	4.1	0.8	2.24	11.37	5.72
1,835	Sp0310+0726	03100053+0726506	13,533,892,921,879,936	47.502113	7.447362	17.31	15.2	12.85	12.21	11.78	23.7507	0.0934	0.09	0	0.11	0.01	2,590	105	7.7	1.1	3.93	2.84	10.83
1,878	Sp0313+0742	03133650+0742312	13,555,539,556,582,272	48.402132	7.708672	11.17	10.27	9.1	8.49	8.27	39.8592	0.0907	0.56	0.02	0.56	0.06	3,837	110	1.7	0.4	0.3	2.95	0.59
1,940	Sp0318+1018	03183520+1018446	14,560,046,508,208,640	49.646686	10.312372	11.41	10.19	8.99	8.38	8.19	35.308	0.0653	0.53	0.02	0.53	0.06	3,779	104	1.9	0.4	0.33	3.6	0.67
1,825	Sp0309+1001	03090015+1001257	14,912,165,107,085,184	47.250716	10.023793	13.21	11.44	9.93	9.33	9.07	12.5774	0.0123	0.14	0	0.16	0.02	3,103	104	4.4	0.8	3.27	20.07	8.28
1,806	Sp0307+1026	03071634+1026382	15,128,081,702,947,072	46.818148	10.443988	15.82	14.08	12.33	11.81	11.48	32.5706	0.1348	0.12	0	0.15	0.02	3,001	105	4.9	0.9	2.74	4.38	8.11
1,783	Sp0305+1013	03051393+1013223	15,141,997,396,965,888	46.308056	10.222869	12.99	11.43	10.13	9.52	9.25	30.4245	0.0727	0.31	0.01	0.32	0.04	3,339	104	3.3	0.6	0.86	4.85	1.99
1,861	Sp0312+1118	03120387+1118513	15,674,882,579,496,576	48.016228	11.314263	14.14	12.35	11	10.39	10.13	32.9032	0.1078	0.22	0.01	0.25	0.03	3,204	104	3.9	0.7	1.33	4.42	3.37
1,989	Sp0323+1141	03232241+1141134	16,302,463,200,535,040	50.843387	11.687045	11.1	9.65	8.39	7.8	7.56	17.1083	0.0253	0.38	0.01	0.39	0.04	3,451	104	2.9	0.6	0.63	9.94	1.36
2,042	Sp0328+1129	03283463+1129515	16,386,404,041,502,592	52.144397	11.497692	16.86	15.04	12.46	11.78	11.33	17.8865	0.0526	0.09	0	0.11	0.01	2,511	105	8.2	1.1	4.79	3.51	13.86
2,036	Sp0328+1139	03280269+1139118	16,439,043,160,641,152	52.011188	11.653301	11.56	10.49	9.28	8.66	8.46	37.4566	0.0641	0.51	0.02	0.5	0.06	3,732	105	2	0.4	0.37	3.12	0.75
2,052	Sp0329+1142	03292523+1142112	16,442,680,997,316,096	52.355105	11.703147	12.02	10.56	9.34	8.68	8.46	33.4902	0.0856	0.47	0.01	0.45	0.05	3,656	106	2.2	0.5	0.46	3.75	0.95
1,908	Sp0316+1054	03163003+1054376	16,893,004,023,863,552	49.125194	10.910419	14.16	12.47	11.1	10.51	10.21	31.5899	0.0797	0.21	0.01	0.23	0.03	3,169	105	4	0.8	1.51	4.57	3.89
1,909	Sp0316+1054	03163018+1054409	16,893,004,023,863,424	49.125801	10.911326	14.32	12.66	11.26	10.67	10.36	31.7796	0.0733	0.19	0.01	0.22	0.03	3,157	104	4.1	0.8	1.67	4.47	4.37
1,959	Sp0320+1157	03201003+1157326	17,083,597,492,589,440	50.04192	11.959057	14.98	13	11.57	10.95	10.67	30.2456	0.1938	0.16	0.01	0.18	0.02	3,147	104	4.2	0.8	2.28	5.23	6.22
1,538	Sp0239+0628	02390272+0628257	18,478,946,467,801,090	39.761262	6.473782	14.25	12.55	11.21	10.66	10.39	39.1057	0.1	0.24	0.01	0.27	0.03	3,219	104	3.8	0.7	1.14	3.2	2.89
1,517	Sp0236+0652	02361535+0652191	18,565,464,288,396,416	39.063667	6.871646	10.32	8.67	7.33	6.79	6.57	7.2221	0.0046	0.25	0.01	0.29	0.03	3,245	104	3.7	0.7	1.12	26.16	2.57
1,584	Sp0244+0622	02445113+0622554	18,614,839,233,014,784	41.213054	6.382143	13.77	12.22	10.9	10.35	10.06	39.8573	0.0815	0.28	0.01	0.31	0.04	3,280	104	3.5	0.7	0.92	3.31	2.22
1,554	Sp0240+0727	02401863+0727433	18,973,108,224,425,856	40.077641	7.462061	19.25	17.76	14.47	13.8	13.32	33.5059	0.6237	0.08	0	0.1	0.01	2,227	107	10.2	1.1	2.41	0.63	4.55
1,540	Sp0239+0728	02391735+0728169	18,986,817,760,556,416	39.822221	7.471427	12.88	11.23	9.88	9.34	9.03	20.0296	0.0456	0.23	0.01	0.26	0.03	3,200	104	3.9	0.7	1.39	8.91	3.35
1,430	Sp0227+0716	02271327+0716400	19,523,203,341,631,104	36.805335	7.277819	14.95	12.65	11.22	10.68	10.31	26.4186	0.1675	0.16	0.01	0.19	0.02	3,144	104	4.2	0.8	2.28	6.25	6.06
1,484	Sp0233+0749	02330455+0749422	19,625,187,339,798,144	38.268958	7.828468	11.09	9.83	8.65	7.97	7.75	30.7632	0.0669	0.55	0.02	0.53	0.06	3,817	105	1.8	0.4	0.33	4.51	0.65
1,466	Sp0231+0810	02311538+0810023	19,693,185,261,940,096	37.814068	8.1674	15.78	13.82	12.32	11.72	11.45	38.6335	0.1609	0.14	0	0.17	0.02	3,112	104	4.3	0.8	2.25	4.18	6.56
1,532	Sp0237+0734	02375810+0734407	19,720,226,376,127,490	39.49207	7.577888	14.41	12.79	11.43	10.8	10.54	38.2676	0.1321	0.21	0.01	0.24	0.03	3,190	104	3.9	0.7	1.37	3.37	3.57
1,562	Sp0241+0829	02410249+0829526	19,905,219,207,554,816	40.260433	8.498018	13.84	12.23	10.89	10.37	10.09	34.1676	0.0997	0.24	0.01	0.27	0.03	3,218	104	3.8	0.7	1.15	4.23	2.86
1,541	Sp0239+0838	02391837+0838239	19,971,739,661,002,624	39.826695	8.640018	14.82	13.31	11.9	11.41	11.12	39.1606	0.1586	0.17	0.01	0.2	0.02	3,155	104	4.1	0.8	1.74	3.58	4.94
1,685	Sp0254+0936	02545157+0936010	21,063,108,030,685,696	43.714893	9.60028	14.07	12.5	11.15	10.55	10.32	34.582	0.0724	0.22	0.01	0.25	0.03	3,196	104	3.9	0.7	1.35	3.97	3.46
1,644	Sp0251+1038	02514284+1038420	22,125,575,564,953,216	42.928572	10.645015	9.49	8.57	7.68	7.11	6.98	28.9445	0.038	0.64	0.02	0.68	0.07	4,237	107	0.8	0.3	0.21	3.87	0.37
1,464	Sp0231+0822	02310327+0822550	22,707,874,346,819,710	37.763685	8.381994	10.32	9.34	8.36	7.73	7.55	36.0934	0.059	0.63	0.02	0.63	0.07	4,191	126	0.9	0.3	0.24	3.43	0.43
1,477	Sp0231+1042	02315510+1042397	23,642,149,992,673,024	37.979629	10.710989	15.08	13.35	11.93	11.36	11.08	37.6146	0.117	0.16	0.01	0.19	0.02	3,153	104	4.1	0.8	1.93	3.91	5.47
1,363	Sp0220+0908	02200446+0908400	23,755,262,251,323,650	35.018504	9.14448	13.16	11.67	10.38	9.77	9.54	34.3968	0.0784	0.31	0.01	0.33	0.04	3,344	104	3.3	0.6	0.84	4.29	1.93
1,595	Sp0246+1146	02461726+1146309	25,488,745,411,919,360	41.572011	11.775239	8.11	6.91	6.29	5.69	5.53	16.1517	0.012	0.67	0.02	0.69	0.07	4,379	108	0.6	0.3	0.2	5.63	0.35
1,454	Sp0228+1205	02285466+1205209	26,283,932,836,820,096	37.227834	12.089147	10.98	9.57	8.37	7.77	7.58	25.6047	0.1193	0.51	0.02	0.52	0.06	3,752	105	1.9	0.4	0.35	5.27	0.71
1,488	Sp0233+1239	02332761+1239538	26,367,903,742,260,736	38.365291	12.664948	12.23	10.8	9.52	8.92	8.69	24.6222	0.0444	0.33	0.01	0.34	0.04	3,374	104	3.1	0.6	0.79	5.96	1.77
1,709	Sp0257+1047	02573103+1047245	27,360,698,317,776,640	44.379525	10.790159	11.9	10.5	9.16	8.66	8.43	16.3955	0.0244	0.24	0.01	0.29	0.03	3,233	104	3.7	0.7	1.13	10.92	2.65
1,786	Sp0305+1149	03053063+1149356	27,718,413,262,305,410	46.377681	11.826535	11.94	10.57	9.33	8.71	8.52	31.5773	0.1187	0.44	0.01	0.44	0.05	3,586	107	2.4	0.5	0.48	4.03	1.03
1,787	Sp0305+1149	03053124+1149563	27,718,417,553,968,896	46.380185	11.832301	11.56	10.25	9.03	8.39	8.16	31.6875	0.1235	0.5	0.02	0.48	0.05	3,702	105	2.1	0.4	0.4	4.19	0.83
1,794	Sp0306+1205	03061500+1205548	27,821,118,811,895,810	46.562605	12.09851	14.6	12.68	11.29	10.68	10.43	33.6969	0.1074	0.2	0.01	0.23	0.03	3,163	104	4.1	0.8	1.53	4.05	4
1,974	Sp0321+1419	03213402+1419143	30,015,331,704,220,930	50.392023	14.320521	14.03	12.56	11.2	10.67	10.43	36.7056	0.08	0.22	0.01	0.26	0.03	3,198	104	3.9	0.7	1.25	3.55	3.22
1,795	Sp0306+1448	03061700+1448413	30,836,976,127,809,024	46.570759	14.811516	13.24	11.27	10	9.45	9.18	35.9252	0.0554	0.38	0.01	0.39	0.04	3,443	104	2.9	0.6	0.6	3.54	1.35
1,816	Sp0307+1510	03074992+1510043	30,872,916,414,127,744	46.957991	15.167895	12.33	11.1	9.84	9.32	9.04	34.2377	0.0515	0.38	0.01	0.4	0.04	3,449	105	2.9	0.6	0.58	3.66	1.29
1,883	Sp0314+1603	03140344+1603056	31,235,033,696,866,690	48.514299	16.051521	17.23	15.81	12.53	11.82	11.24	13.6185	0.0511	0.08	0	0.1	0.01	2,239	105	10.1	1.1	5.35	2.95	15.61
1,597	Sp0246+1625	02463486+1625115	33,732,162,042,339,070	41.64449	16.419503	14.58	12.93	10.97	10.52	10.19	13.9947	0.0233	0.1	0	0.13	0.02	2,813	105	6.1	1	4.44	11.52	13.26
1,799	Sp0306+1713	03062619+1713292	34,772,746,719,056,130	46.609236	17.224797	14	12.26	10.93	10.36	10.07	36.0935	0.1532	0.25	0.01	0.28	0.03	3,236	104	3.7	0.7	1.08	3.84	2.68
1,666	Sp0253+1652	02530084+1652532	35,227,046,884,571,776	43.254379	16.88129	12.27	10.45	8.39	7.88	7.58	3.8312	0.0039	0.09	0	0.12	0.02	2,744	105	6.6	1	6.05	72.19	16.91
1,671	Sp0253+1724	02532611+1724324	35,398,295,820,372,864	43.358871	17.408998	11.51	9.98	8.72	8.15	7.87	19.2023	0.2568	0.37	0.01	0.38	0.04	3,429	105	2.9	0.6	0.66	9.62	1.45
1,721	Sp0259+1748	02590791+1748160	35,590,199,254,428,930	44.783029	17.804485	16.42	14.41	12.58	11.97	11.63	31.8012	0.138	0.11	0	0.13	0.02	2,931	105	5.4	0.9	3.13	3.39	9
2,167	Sp0342+1104	03423845+1104505	36,429,264,066,581,760	55.660249	11.080677	15.02	13.26	11.78	11.21	10.91	31.1878	0.0941	0.15	0	0.17	0.02	3,121	104	4.3	0.8	2.4	5.06	6.79
2,270	Sp0352+1115	03523432+1115389	36,629,890,579,758,590	58.14308	11.260788	12.63	11.12	9.86	9.24	9.01	34.967	0.0753	0.39	0.01	0.4	0.04	3,476	104	2.8	0.5	0.58	3.6	1.28
2,232	Sp0348+1126	03480667+1126178	36,685,828,231,324,160	57.027736	11.438344	16.57	14.87	12.86	12.41	12.04	32.17	0.1458	0.1	0	0.13	0.02	2,782	105	6.3	1	2.93	2.52	8.35
2,235	Sp0348+1226	03483188+1226132	36,995,924,872,102,020	57.132967	12.43682	15.62	14.19	12.33	11.78	11.54	27.7914	0.0965	0.1	0	0.13	0.02	2,899	104	5.6	1	3.24	4.6	9.77
2,166	Sp0342+1216	03423180+1216225	37,414,254,686,537,340	55.632617	12.272912	13.24	11.44	10.16	9.55	9.28	32.9951	0.0727	0.33	0.01	0.34	0.04	3,376	104	3.1	0.6	0.78	4.29	1.76
2,158	Sp0341+1252	03413345+1252149	38,017,646,052,130,180	55.389348	12.870593	12.56	11.28	10.02	9.44	9.21	36.0767	0.0669	0.37	0.01	0.39	0.04	3,448	104	2.9	0.6	0.61	3.54	1.36
2,341	Sp0359+1325	03595281+1325415	38,535,825,266,420,350	59.970181	13.428246	13.73	12.1	10.76	10.15	9.89	34.027	0.0993	0.26	0.01	0.28	0.03	3,246	104	3.7	0.7	1.08	4.56	2.63
2,342	Sp0359+1325	03595303+1325443	38,535,825,266,420,220	59.971063	13.429007	13.57	11.93	10.61	10.01	9.78	34.2248	0.1006	0.27	0.01	0.3	0.04	3,280	105	3.5	0.7	0.97	4.69	2.32
2,291	Sp0355+1439	03552014+1439297	39,612,036,694,609,150	58.834112	14.658222	18.32	16.13	13.83	13.11	12.7	36.8018	0.3321	0.09	0	0.11	0.01	2,613	105	7.5	1.1	2.97	1.64	5.94
2,310	Sp0357+1529	03570493+1529270	40,091,256,260,676,740	59.27069	15.490657	19.94	18.47	15.1	14.34	13.99	39.5974	1.0613	0.07	0	0.1	0.01	2,156	109	10.6	1.1	1.93	0.55	3.95
2,333	Sp0359+1510	03590624+1510493	40,111,081,832,057,980	59.77599	15.180296	12.19	10.79	9.53	8.96	8.71	27.5667	0.0467	0.36	0.01	0.37	0.04	3,425	104	3	0.6	0.66	4.97	1.47
2,113	Sp0336+1350	03362242+1350477	41,001,411,371,871,870	54.093574	13.846175	13.64	12.09	10.71	10.29	10	28.7989	0.0577	0.21	0.01	0.25	0.03	3,173	104	4	0.8	1.32	5.88	3.36
2,071	Sp0331+1419	03314712+1419194	41,840,029,505,514,500	52.94642	14.321596	11.28	9.95	8.7	8.15	7.91	20.2213	0.0409	0.38	0.01	0.4	0.04	3,455	104	2.8	0.6	0.6	8.7	1.3
2,009	Sp0325+1412	03252912+1412333	41,966,709,564,899,840	51.371284	14.209205	18.75	17.47	14.41	13.78	13.29	39.4432	0.668	0.08	0	0.11	0.01	2,391	106	9	1.1	2.33	0.62	4.36
1,993	Sp0324+1423	03241062+1423368	42,017,428,834,393,470	51.044015	14.394254	12.87	11.39	10.13	9.06	9.09	30.5629	0.0721	0.34	0.01	0.31	0.03	3,452	104	2.9	0.6	0.95	5.21	2.1
1,994	Sp0324+1423	03241062+1423368	42,017,428,833,731,330	51.044329	14.393426	12.85	11.39	10.13	9.06	9.09	30.5647	0.0455	0.34	0.01	0.31	0.03	3,452	104	2.9	0.6	0.95	5.21	2.1
2,206	Sp0345+1442	03455483+1442521	42,793,752,764,180,740	56.478553	14.714301	11.06	9.91	8.77	8.08	7.92	36.2244	0.0581	0.58	0.02	0.57	0.06	3,944	105	1.4	0.4	0.29	3.79	0.56
2,215	Sp0346+1524	03465952+1524170	42,947,680,095,257,340	56.748204	15.4047	13.96	12.09	10.73	10.16	9.85	28.3491	0.1064	0.22	0.01	0.25	0.03	3,189	104	3.9	0.7	1.42	6.2	3.56
2,180	Sp0343+1640	03434521+1640027	43,335,537,119,008,900	55.93856	16.667269	9.92	8.73	7.53	6.91	6.69	17.2393	0.0136	0.52	0.02	0.51	0.06	3,752	104	1.9	0.4	0.36	7.14	0.72
2,182	Sp0343+1640	03435253+1640198	43,335,880,716,390,780	55.969047	16.672029	9.21	8.17	7.05	6.41	6.25	17.2088	0.0119	0.59	0.02	0.59	0.06	3,969	104	1.4	0.3	0.27	6.5	0.51
2,271	Sp0352+1701	03524169+1701056	43,574,131,143,039,100	58.174051	17.017826	12.19	10.34	8.93	8.38	8.05	9.673	0.012	0.17	0.01	0.2	0.02	3,155	104	4.1	0.8	2.44	27.48	5.88
2,227	Sp0347+1645	03475438+1645235	43,656,796,377,403,780	56.976761	16.756636	11.53	10.46	9.23	8.68	8.44	32.4067	0.047	0.46	0.01	0.46	0.05	3,627	105	2.3	0.5	0.43	3.86	0.91
2,450	Sp0409+1622	04095712+1622417	45,506,454,107,945,340	62.488055	16.378266	15.55	13.58	12.09	11.46	11.15	34.5888	0.1553	0.15	0	0.17	0.02	3,115	104	4.3	0.8	2.42	4.66	6.99
2,476	Sp0412+1615	04122173+1615033	45,679,386,670,867,580	63.090587	16.250951	12.68	10.98	9.74	9.1	8.87	35.641	0.179	0.42	0.01	0.42	0.05	3,533	105	2.6	0.5	0.52	3.43	1.13
2,373	Sp0403+1652	04031219+1652141	46,380,840,731,065,980	60.800774	16.870617	13.52	12.08	10.76	10.15	9.92	36.7809	0.1061	0.28	0.01	0.3	0.03	3,284	104	3.5	0.7	0.96	4.08	2.31
2,406	Sp0406+1815	04060221+1815033	47,068,207,297,219,580	61.509386	18.250905	11.89	10.7	9.49	8.82	8.6	39.2648	0.0658	0.5	0.02	0.48	0.05	3,714	104	2	0.4	0.4	2.93	0.82
2,537	Sp0418+1730	04183596+1730581	47,322,297,561,027,710	64.649964	17.516126	14.4	12.71	11.35	10.77	10.5	36.8899	0.1098	0.21	0.01	0.24	0.03	3,182	104	4	0.7	1.37	3.54	3.58
2,540	Sp0418+1732	04184750+1732170	47,322,641,158,530,560	64.698083	17.538085	10.79	9.74	8.63	7.97	7.76	37.4711	0.5261	0.61	0.02	0.61	0.07	4,024	105	1.3	0.3	0.25	3.37	0.47
2,595	Sp0423+1855	04230857+1855401	47,948,469,433,052,800	65.785816	18.927775	13.73	12.42	11.09	10.53	10.28	38.6402	0.0645	0.25	0.01	0.28	0.03	3,233	104	3.7	0.7	1.07	3.3	2.69
2,583	Sp0422+1915	04220827+1915218	48,149,164,665,132,670	65.534335	19.256087	11.82	10.42	9.21	8.6	8.34	35.8345	0.071	0.51	0.02	0.5	0.06	3,721	105	2	0.4	0.37	3.35	0.76
2,502	Sp0415+1935	04153447+1935598	48,664,801,258,770,430	63.893815	19.59989	13.99	12.14	10.79	10.21	9.91	29.3747	0.0699	0.22	0.01	0.25	0.03	3,193	104	3.9	0.7	1.39	5.69	3.49
2,534	Sp0418+2021	04182074+2021379	49,102,063,289,298,940	64.586346	20.36055	10	8.96	8.14	7.56	7.42	36.2762	0.0644	0.65	0.02	0.68	0.07	4,274	108	0.8	0.3	0.2	3.29	0.36
2,576	Sp0421+2018	04213829+2018102	49,124,190,961,270,660	65.409656	20.302816	14.77	12.9	11.51	10.9	10.63	37.3875	0.1508	0.2	0.01	0.23	0.03	3,164	104	4.1	0.8	1.48	3.48	3.92
2,545	Sp0419+2143	04191817+2143148	49,518,606,397,688,700	64.825781	21.720694	12.78	11.29	10.02	9.45	9.2	33.3991	0.0807	0.35	0.01	0.36	0.04	3,408	104	3	0.6	0.69	4.03	1.55
2,257	Sp0350+1818	03505737+1818069	50,667,699,128,858,620	57.739201	18.301872	17.23	14.78	12.97	12.21	11.78	36.5825	0.2045	0.12	0	0.13	0.02	2,953	104	5.2	0.9	3.22	2.62	8.86

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Ultracool and Brown Dwarf Catalog (40 pc)

Comprehensive catalog of 14,168 ultracool and brown dwarfs within 40 parsecs, highly relevant for JWST atmospheric characterization studies.

Dataset description

Brown dwarfs are substellar objects too low in mass to sustain hydrogen fusion. Ultracool dwarfs (spectral types M7 and later) bridge the gap between the lowest-mass stars and giant planets. This volume-complete 40 pc sample from Sebastian et al. (2021) provides the most comprehensive census of the solar neighborhood's ultracool population, including L, T, and Y dwarfs ideal for JWST follow-up.

Quick stats

14,168 ultracool dwarfs within 40 pc
14,168 with spectral type classification
14,168 with distance estimates

Usage

from datasets import load_dataset

ds = load_dataset("juliensimon/brown-dwarf-catalog", split="train")
df = ds.to_pandas()

# T and Y dwarfs (coldest brown dwarfs)
if "spectral_type" in df.columns:
    cold = df[df["spectral_type"].str.startswith(("T", "Y"), na=False)]
    print(f"{len(cold):,} T/Y dwarfs")

# Nearest brown dwarfs
if "distance_pc" in df.columns:
    nearby = df.dropna(subset=["distance_pc"]).sort_values("distance_pc").head(20)
    print(nearby[["ra_deg", "dec_deg", "distance_pc"]].to_string())

Data source

Sebastian, D. et al. (2021), "The census of the solar neighbourhood ultracool dwarf volume-complete 40 pc sample", A&A, 645, A100. Accessed via VizieR, CDS Strasbourg.