Datasets:

juliensimon
/

neowise-asteroid-properties

object_id stringlengths 1 26	asteroid_number int64 2 523k ⌀	prov_desig stringlengths 7 10 ⌀	comet_desig stringclasses 8 values	mpc_packed_name stringlengths 5 8	population stringclasses 8 values	absolute_mag float64 4.06 27.4 ⌀	slope_param float64 -0.27 0.82 ⌀	mean_jd float64 2.46M 2.46M	n_w1 int64 0 189	n_w2 int64 0 203	n_w3 int64 0 463	n_w4 int64 0 463	fit_code stringclasses 11 values	diameter_km float64 0.01 544	diameter_err_km float64 0 169	v_albedo float64 0 1 ⌀	v_albedo_err float64 0 0.45 ⌀	ir_albedo float64 0 1 ⌀	ir_albedo_err float64 0 0.48 ⌀	beaming_param float64 0.3 3.14 ⌀	beaming_param_err float64 0 1.08 ⌀	stacked_flag stringclasses 1 value	reference stringclasses 16 values	notes stringclasses 4 values
5	5	null	null	00005	main_belt	6.85	0.15	2,455,392.038961	9	13	13	13	DVBI	108.293	3.703	0.274	0.033	0.365	0.03	0.867	0.101	null	Mas14	null
6	6	null	null	00006	main_belt	5.71	0.24	2,455,359.692162	14	14	14	13	DVBI	195.639	5.441	0.24	0.044	0.346	0.028	0.913	0.091	null	Mas14	null
8	8	null	null	00008	main_belt	6.35	0.28	2,455,347.917951	15	17	16	17	DVBI	147.491	1.025	0.226	0.041	0.378	0.038	0.808	0.011	null	Mas14	null
9	9	null	null	00009	main_belt	6.28	0.17	2,455,382.480557	15	15	14	15	DVBI	183.011	0.39	0.156	0.029	0.33	0.012	0.86	0.013	null	Mas14	null
9	9	null	null	00009	main_belt	6.28	0.17	2,455,213.54544	10	10	10	10	DVBI	184.158	0.899	0.158	0.012	0.337	0.036	0.784	0.004	null	Mas14	null
10	10	null	null	00010	main_belt	5.43	0.15	2,455,316.130867	11	11	6	0	DVBI	453.239	19.244	0.058	0.005	0.065	0.005	0.928	0.026	null	Mas11	null
11	11	null	null	00011	main_belt	6.61	0.15	2,455,270.680565	9	10	9	10	DVBI	142.887	1.008	0.191	0.021	0.351	0.028	0.784	0.016	null	Mas14	null
12	12	null	null	00012	main_belt	7.24	0.22	2,455,234.456578	17	19	14	21	DVBI	115.087	1.199	0.163	0.027	0.321	0.024	0.837	0.022	null	Mas14	null
14	14	null	null	00014	main_belt	6.3	0.15	2,455,341.502174	8	8	8	8	DVBI	140.761	8.406	0.269	0.037	0.394	0.057	0.839	0.149	null	Mas14	null
15	15	null	null	00015	main_belt	5.28	0.23	2,455,283.947391	7	7	7	9	DVBI	231.689	2.234	0.248	0.042	0.399	0.037	0.786	0.039	null	Mas14	null
17	17	null	null	00017	main_belt	7.76	0.15	2,455,234.289383	11	11	11	12	DVBI	84.899	2.027	0.193	0.028	0.369	0.076	0.773	0.044	null	Mas14	null
18	18	null	null	00018	main_belt	6.51	0.25	2,455,211.327521	14	15	15	15	DVBI	139.594	2.452	0.226	0.034	0.308	0.04	0.952	0.047	null	Mas14	null
19	19	null	null	00019	main_belt	7.13	0.1	2,455,259.962161	9	10	7	10	DVBI	196.371	0.305	0.064	0.013	0.065	0.014	0.918	0.008	null	Mas14	null
22	22	null	null	00022	main_belt	6.45	0.21	2,455,349.70609	9	9	9	9	DVBI	167.536	3.053	0.166	0.005	0.267	0.035	1.081	0.047	null	Mas14	null
24	24	null	null	00024	main_belt	7.07	0.19	2,455,308.093729	5	7	5	5	DVBI	195.519	4.359	0.069	0.01	0.071	0.009	1.002	0.044	null	Mas14	null
26	26	null	null	00026	main_belt	7.5	0.15	2,455,370.541009	13	13	13	13	DVBI	83.039	2.14	0.256	0.018	0.4	0.043	1.05	0.072	null	Mas14	null
27	27	null	null	00027	main_belt	7	0.15	2,455,273.029375	6	6	7	7	DVBI	114.103	4.477	0.215	0.033	0.493	0.086	1.006	0.114	null	Mas14	null
29	29	null	null	00029	main_belt	5.85	0.2	2,455,288.644567	6	9	10	10	DVBI	189.559	1.129	0.216	0.043	0.327	0.04	0.854	0.02	null	Mas14	null
30	30	null	null	00030	main_belt	7.57	0.15	2,455,262.973252	16	16	15	18	DVBI	92.787	2.04	0.192	0.027	0.362	0.032	0.942	0.051	null	Mas14	null
31	31	null	null	00031	main_belt	6.74	0.15	2,455,335.023103	11	12	8	10	DVBI	259.866	12.736	0.053	0.006	0.082	0.012	0.874	0.119	null	Mas14	null
32	32	null	null	00032	main_belt	7.56	0.15	2,455,331.081233	13	13	13	13	DVBI	81.783	3.736	0.25	0.03	0.369	0.059	1.05	0.14	null	Mas14	null
34	34	null	null	00034	main_belt	8.51	0.15	2,455,303.362421	6	6	6	6	DVBI	115.49	1.877	0.052	0.006	0.055	0.006	0.883	0.042	null	Mas14	null
35	35	null	null	00035	main_belt	8.5	0.15	2,455,287.354443	7	10	11	12	DVBI	103.055	1.201	0.066	0.015	0.055	0.004	0.912	0.039	null	Mas14	null
38	38	null	null	00038	main_belt	8.32	0.15	2,455,259.631974	12	12	13	13	DVBI	92.255	0.49	0.097	0.015	0.071	0.003	0.887	0.008	null	Mas14	null
39	39	null	null	00039	main_belt	6.1	0.15	2,455,360.0885	14	16	16	16	DVBI	179.484	1.685	0.226	0.045	0.396	0.045	0.804	0.025	null	Mas14	null
40	40	null	null	00040	main_belt	7	0.15	2,455,252.782983	12	12	13	13	DVBI	111.251	0.391	0.22	0.047	0.397	0.093	0.859	0.026	null	Mas14	null
43	43	null	null	00043	main_belt	7.93	0.11	2,455,288.874412	5	5	6	6	DVBI	71.34	1.254	0.234	0.038	0.433	0.065	1.119	0.079	null	Mas14	null
45	45	null	null	00045	main_belt	7.46	0.07	2,455,307.894126	8	8	9	10	DVBI	202.327	2.168	0.045	0.006	0.071	0.013	0.875	0.009	null	Mas14	null
47	47	null	null	00047	main_belt	7.85	0.16	2,455,227.939107	12	13	12	12	DVBI	125.14	3.513	0.082	0.005	0.071	0.017	0.993	0.055	null	Mas14	null
48	48	null	null	00048	main_belt	6.9	0.15	2,455,295.919512	10	10	9	10	DVBI	216.473	4.757	0.065	0.008	0.064	0.003	0.86	0.046	null	Mas14	null
50	50	null	null	00050	main_belt	9.24	0.15	2,455,328.237468	14	14	14	15	DVBI	84.074	0.242	0.05	0.004	0.056	0.005	0.899	0.002	null	Mas14	null
51	51	null	null	00051	main_belt	7.35	0.08	2,455,231.443001	13	13	13	13	DVBI	138.159	0.966	0.105	0.027	0.108	0.023	0.932	0.01	null	Mas14	null
52	52	null	null	00052	main_belt	6.31	0.18	2,455,264.593244	11	11	11	0	DVBI	334.563	20.945	0.047	0.015	0.066	0.004	0.903	0.043	null	Mas11	null
56	56	null	null	00056	main_belt	8.31	0.15	2,455,285.631625	10	12	11	12	DVBI	120.326	1.369	0.058	0.011	0.078	0.007	0.82	0.031	null	Mas14	null
57	57	null	null	00057	main_belt	7.03	0.15	2,455,359.292894	11	11	11	11	DVBI	120.068	3.551	0.189	0.024	0.331	0.053	0.948	0.068	null	Mas14	null
58	58	null	null	00058	main_belt	8.86	0.15	2,455,263.997494	8	10	11	12	DVBI	89.612	0.838	0.063	0.011	0.059	0.006	0.95	0.022	null	Mas14	null
59	59	null	null	00059	main_belt	7.93	0.15	2,455,350.927766	15	15	15	15	DVBI	165.119	4.506	0.044	0.007	0.063	0.01	0.966	0.064	null	Mas14	null
60	60	null	null	00060	main_belt	8.51	0.27	2,455,338.954019	22	23	21	23	DVBI	43.218	0.571	0.373	0.027	0.349	0.043	0.852	0.023	null	Mas14	null
61	61	null	null	00061	main_belt	7.68	0.15	2,455,408.506515	14	14	14	14	DVBI	85.937	2.151	0.203	0.014	0.358	0.042	0.895	0.055	null	Mas14	null
63	63	null	null	00063	main_belt	7.55	0.25	2,455,277.595839	7	7	11	9	DVBI	91.632	4.361	0.225	0.044	0.507	0.066	0.888	0.067	null	Mas14	null
64	64	null	null	00064	main_belt	7.58	0.48	2,455,312.095841	14	15	15	15	DVBI	58.292	1.082	0.483	0.06	0.579	0.048	0.769	0.064	null	Mas14	null
67	67	null	null	00067	main_belt	8.28	0.15	2,455,245.669765	10	11	13	13	DVBI	56.309	0.396	0.272	0.063	0.412	0.026	0.873	0.018	null	Mas14	null
68	68	null	null	00068	main_belt	6.78	0.05	2,455,268.531039	8	10	12	13	DVBI	122.509	3.137	0.228	0.028	0.347	0.062	1.007	0.064	null	Mas14	null
70	70	null	null	00070	main_belt	8.11	0.14	2,455,402.292632	12	12	9	12	DVBI	127.911	0.745	0.062	0.012	0.064	0.013	0.888	0.011	null	Mas14	null
71	71	null	null	00071	main_belt	7.3	0.4	2,455,272.601456	13	13	12	13	DVBI	82.055	2.624	0.315	0.077	0.403	0.026	0.729	0.094	null	Mas14	null
72	72	null	null	00072	main_belt	8.94	0.15	2,455,234.223294	12	13	13	12	DVBI	78.797	2	0.076	0.015	0.114	0.013	0.924	0.068	null	Mas14	null
73	73	null	null	00073	main_belt	9	0.15	2,455,370.639377	13	13	14	14	DVBI	44.59	0.941	0.223	0.026	0.354	0.049	0.992	0.035	null	Mas14	null
75	75	null	null	00075	main_belt	8.96	0.23	2,455,258.342235	6	7	9	9	DVBI	62.377	1.603	0.117	0.032	0.185	0.009	0.928	0.067	null	Mas14	null
76	76	null	null	00076	main_belt	7.9	0.15	2,455,253.643531	6	8	7	9	DVBI	145.423	1.287	0.058	0.004	0.068	0.006	0.847	0.008	null	Mas14	null
77	77	null	null	00077	main_belt	8.52	0.16	2,455,345.404115	13	13	13	13	DVBI	61.39	0.177	0.233	0.026	0.251	0.02	0.818	0.005	null	Mas14	null
79	79	null	null	00079	main_belt	7.96	0.25	2,455,333.066111	11	11	11	11	DVBI	63.479	0.952	0.287	0.046	0.393	0.045	0.839	0.041	null	Mas14	null
80	80	null	null	00080	main_belt	7.98	0.15	2,455,409.336693	11	11	11	11	DVBI	68.563	1.033	0.242	0.043	0.435	0.052	0.901	0.04	null	Mas14	null
80	80	null	null	00080	main_belt	7.98	0.15	2,455,238.822998	10	10	9	10	DVBI	74.249	3.001	0.206	0.014	0.431	0.054	0.926	0.106	null	Mas14	null
81	81	null	null	00081	main_belt	8.48	0.15	2,455,240.776299	14	14	15	15	DVBI	117.727	0.734	0.053	0.009	0.053	0.003	1.015	0.007	null	Mas14	null
82	82	null	null	00082	main_belt	8.4	0.28	2,455,357.37729	11	11	11	11	DVBI	57.621	0.714	0.232	0.042	0.335	0.028	0.734	0.017	null	Mas14	null
83	83	null	null	00083	main_belt	8.66	0.15	2,455,339.318904	7	8	8	7	DVBI	89.639	2.651	0.076	0.013	0.115	0.012	1.014	0.082	null	Mas14	null
85	85	null	null	00085	main_belt	7.56	0.15	2,455,319.040416	13	14	10	12	DVBI	169.456	4.524	0.058	0.006	0.065	0.009	1.077	0.062	null	Mas14	null
86	86	null	null	00086	main_belt	8.54	0.15	2,455,345.834707	11	12	12	11	DVBI	109.929	0.609	0.056	0.009	0.049	0.007	0.872	0.009	null	Mas14	null
87	87	null	null	00087	main_belt	6.94	0.15	2,455,307.896164	9	9	9	9	DVBI	253.051	2.953	0.046	0.004	0.082	0.005	0.862	0.008	null	Mas14	null
89	89	null	null	00089	main_belt	6.6	0.15	2,455,206.105815	5	5	5	5	DVBI	145.483	1.265	0.189	0.025	0.339	0.04	0.884	0.031	null	Mas14	null
90	90	null	null	00090	main_belt	8.27	0.15	2,455,408.409739	14	14	13	14	DVBI	115.974	1.107	0.065	0.008	0.068	0.012	0.91	0.019	null	Mas14	null
90	90	null	null	00090	main_belt	8.27	0.15	2,455,236.109616	10	12	12	12	DVBI	122.031	3.175	0.058	0.004	0.068	0.005	0.886	0.057	null	Mas14	null
91	91	null	null	00091	main_belt	8.84	0.15	2,455,383.207336	13	13	12	13	DVBI	103.339	3.341	0.048	0.005	0.054	0.012	0.984	0.101	null	Mas14	null
91	91	null	null	00091	main_belt	8.84	0.15	2,455,214.141958	12	12	11	12	DVBI	103.402	0.483	0.048	0.01	0.048	0.011	0.915	0.01	null	Mas14	null
94	94	null	null	00094	main_belt	7.59	0.15	2,455,332.008571	17	18	17	16	DVBI	173.77	4.194	0.054	0.009	0.068	0.009	1.014	0.057	null	Mas14	null
95	95	null	null	00095	main_belt	7.84	0.15	2,455,407.615725	14	14	12	9	DVBI	147.969	5.148	0.059	0.01	0.053	0.009	1.011	0.083	null	Mas14	null
95	95	null	null	00095	main_belt	7.84	0.15	2,455,239.088561	9	9	9	9	DVBI	149.081	5.575	0.058	0.007	0.055	0.005	1.007	0.091	null	Mas14	null
97	97	null	null	00097	main_belt	7.74	0.15	2,455,375.898419	15	16	15	16	DVBI	100.717	0.641	0.251	0.043	0.198	0.04	0.797	0.01	null	Mas14	null
98	98	null	null	00098	main_belt	8.84	0.15	2,455,309.022662	11	11	11	11	DVBI	102.488	3.995	0.049	0.009	0.059	0.006	0.833	0.092	null	Mas14	null
99	99	null	null	00099	main_belt	9.43	0.15	2,455,234.820955	12	13	11	12	DVBI	67.354	0.416	0.065	0.009	0.07	0.006	0.884	0.009	null	Mas14	null
100	100	null	null	00100	main_belt	7.67	0.15	2,455,371.26868	15	15	14	15	DVBI	85.734	1.961	0.205	0.01	0.344	0.043	0.893	0.043	null	Mas14	null
102	102	null	null	00102	main_belt	9.26	0.15	2,455,383.009262	12	12	12	12	DVBI	82.595	0.4	0.051	0.006	0.054	0.007	0.831	0.008	null	Mas14	null
102	102	null	null	00102	main_belt	9.26	0.15	2,455,217.847853	9	9	8	8	DVBI	82.288	0.884	0.052	0.008	0.055	0.005	0.862	0.026	null	Mas14	null
103	103	null	null	00103	main_belt	7.66	0.15	2,455,347.917442	12	12	12	12	DVBI	83.908	2.091	0.217	0.024	0.367	0.029	0.956	0.073	null	Mas14	null
104	104	null	null	00104	main_belt	8.27	0.15	2,455,311.964237	10	11	10	11	DVBI	128.989	3.801	0.052	0.006	0.051	0.009	1.001	0.081	null	Mas14	null
107	107	null	null	00107	main_belt	7.08	0.08	2,455,335.413711	10	12	10	10	DVBI	210.37	8.326	0.059	0.012	0.076	0.006	0.99	0.097	null	Mas14	null
108	108	null	null	00108	main_belt	8.09	0.15	2,455,373.517078	0	11	11	13	DVB-	75.498	1.891	0.148	0.013	0.222	0.019	0.898	0.033	null	Mas11	null
109	109	null	null	00109	main_belt	8.75	0.04	2,455,300.024059	7	9	9	9	DVBI	82.588	0.616	0.082	0.014	0.09	0.011	0.808	0.011	null	Mas14	null
110	110	null	null	00110	main_belt	7.8	0.2	2,455,357.013867	15	15	15	15	DVBI	88.203	2.712	0.172	0.023	0.278	0.034	0.969	0.077	null	Mas14	null
111	111	null	null	00111	main_belt	8.02	0.15	2,455,268.233005	7	8	12	12	DVBI	126.344	0.233	0.062	0.008	0.056	0.005	0.925	0.005	null	Mas14	null
112	112	null	null	00112	main_belt	9.84	0.15	2,455,285.335883	5	5	6	6	DVBI	69.818	1.818	0.042	0.009	0.048	0.007	0.916	0.072	null	Mas14	null
113	113	null	null	00113	main_belt	8.74	0.35	2,455,327.444534	11	11	11	11	DVBI	50.137	1.265	0.224	0.018	0.393	0.051	1.04	0.063	null	Mas14	null
114	114	null	null	00114	main_belt	8.26	0.15	2,455,391.873868	15	15	16	16	DVBI	99.146	3.175	0.089	0.014	0.137	0.008	0.982	0.093	null	Mas14	null
114	114	null	null	00114	main_belt	8.26	0.15	2,455,216.523761	8	10	10	10	DVBI	94.178	0.954	0.1	0.02	0.152	0.018	0.902	0.029	null	Mas14	null
115	115	null	null	00115	main_belt	7.51	0.12	2,455,270.12047	3	0	7	7	DVB-	55.139	11.189	0.654	0.124	0.98	0.186	0.3	0.234	null	Mas11	null
117	117	null	null	00117	main_belt	7.95	0.15	2,455,306.839386	12	12	11	12	DVBI	161.593	4.502	0.045	0.007	0.066	0.005	0.877	0.058	null	Mas14	null
118	118	null	null	00118	main_belt	9.14	0.15	2,455,280.771074	5	4	6	7	DVBI	40.211	0.491	0.245	0.025	0.445	0.048	0.806	0.026	null	Mas14	null
119	119	null	null	00119	main_belt	8.42	0.15	2,455,332.900063	11	11	11	11	DVBI	59.339	1.456	0.215	0.011	0.443	0.056	1.012	0.074	null	Mas14	null
120	120	null	null	00120	main_belt	7.75	0.15	2,455,406.423846	8	9	11	11	DVBI	157.997	4.72	0.055	0.004	0.073	0.007	0.88	0.057	null	Mas14	null
120	120	null	null	00120	main_belt	7.75	0.15	2,455,230.155681	10	12	9	11	DVBI	155.132	1.133	0.058	0.003	0.07	0.008	0.895	0.014	null	Mas14	null
121	121	null	null	00121	main_belt	7.31	0.15	2,455,254.405075	10	10	7	10	DVBI	166.242	8.807	0.076	0.034	0.06	0.006	1.061	0.127	null	Mas14	null
122	122	null	null	00122	main_belt	7.87	0.15	2,455,300.551493	9	9	10	10	DVBI	70.676	0.912	0.251	0.037	0.481	0.071	0.731	0.021	null	Mas14	null
125	125	null	null	00125	main_belt	9.04	0.33	2,455,239.18572	14	14	14	14	DVBI	48.418	0.533	0.182	0.036	0.272	0.028	1.087	0.033	null	Mas14	null
128	128	null	null	00128	main_belt	7.49	0.15	2,455,265.057582	12	11	12	13	DVBI	162.515	1.296	0.067	0.005	0.071	0.008	0.844	0.005	null	Mas14	null
129	129	null	null	00129	main_belt	7.07	0.33	2,455,251.987186	10	11	12	12	DVBI	128.718	0.612	0.151	0.057	0.255	0.016	0.974	0.03	null	Mas14	null
130	130	null	null	00130	main_belt	6.99	0.15	2,455,286.491347	10	14	15	15	DVBI	180.652	2.698	0.086	0.015	0.078	0.013	0.941	0.039	null	Mas14	null
131	131	null	null	00131	main_belt	10.03	0.15	2,455,323.309869	22	23	22	23	DVBI	31.337	0.304	0.175	0.039	0.239	0.039	0.941	0.019	null	Mas14	null
133	133	null	null	00133	main_belt	7.98	0.13	2,455,289.867584	10	11	13	13	DVBI	72.175	0.932	0.218	0.037	0.394	0.072	0.988	0.039	null	Mas14	null
135	135	null	null	00135	main_belt	8.23	0.15	2,455,322.349932	13	13	12	14	DVBI	71.044	2.654	0.179	0.032	0.29	0.039	0.928	0.091	null	Mas14	null
136	136	null	null	00136	main_belt	9.69	0.15	2,455,381.387748	29	29	29	29	DVBI	36.893	0.518	0.22	0.053	0.233	0.032	0.931	0.028	null	Mas14	null

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NEOWISE Asteroid Diameters and Albedos

Part of the Orbital Mechanics Datasets collection on Hugging Face.

Physical properties of 183,449 asteroids derived from WISE/NEOWISE infrared observations, spanning main-belt asteroids, NEOs, Hildas, Jupiter Trojans, Centaurs, irregular satellites, and ambiguous objects. Includes effective spherical diameters, visible and infrared geometric albedos, and NEATM thermal beaming parameters.

Dataset description

The WISE (Wide-field Infrared Survey Explorer) and NEOWISE missions observed over 164,000 minor planets at thermal infrared wavelengths (3.4--22 microns). Thermal model fits to these observations yield diameter and albedo estimates that are independent of visible-light assumptions. This dataset combines all published NEOWISE diameter/albedo tables from the PDS Small Bodies Node (V2.0), covering observations from January 2010 through December 2016.

Each record represents a single thermal-model fit for one object. The fit_code column indicates which parameters were allowed to vary: D=diameter, V=visible albedo, B=beaming parameter (or F=fast-rotating model), I=infrared albedo.

Schema

Column	Type	Description
`object_id`	string	Primary identifier (asteroid number, satellite ID, or provisional designation)
`asteroid_number`	Int64	IAU asteroid catalog number (null for unnumbered/satellites)
`prov_desig`	string	Provisional designation (null if none)
`comet_desig`	string	Comet designation for dual-nature objects (null if none)
`mpc_packed_name`	string	MPC packed-format designation
`population`	string	Dynamical population: main_belt, neo, hilda, jupiter_trojan, centaur, irregular_satellite, ambiguous, fixed_diameter
`absolute_mag`	float64	Absolute H magnitude used as input to thermal fit
`slope_param`	float64	G slope parameter for photometric phase correction
`mean_jd`	float64	Mean Julian Date of observations used for fitting
`n_w1`	Int64	Number of W1 (3.4 um) band measurements used
`n_w2`	Int64	Number of W2 (4.6 um) band measurements used
`n_w3`	Int64	Number of W3 (12 um) band measurements used
`n_w4`	Int64	Number of W4 (22 um) band measurements used
`fit_code`	string	4-char code: D=diameter, V=vis albedo, B=beaming/F=FRM, I=IR albedo, -=fixed
`diameter_km`	float64	Best-fit effective spherical diameter (km)
`diameter_err_km`	float64	1-sigma diameter uncertainty (km)
`v_albedo`	float64	Visible geometric albedo (best-fit or assumed)
`v_albedo_err`	float64	1-sigma visible albedo uncertainty
`ir_albedo`	float64	Infrared geometric albedo (best-fit or assumed)
`ir_albedo_err`	float64	1-sigma infrared albedo uncertainty
`beaming_param`	float64	NEATM thermal beaming parameter eta
`beaming_param_err`	float64	1-sigma beaming parameter uncertainty
`stacked_flag`	string	"S" if fit used co-added images on predicted position
`reference`	string	Short reference code for original publication
`notes`	string	Flags: OrbChange, NoOrb, BrokenLink (null if none)

Quick stats

183,449 objects across 8 dynamical populations
178,883 main-belt asteroids
1,523 near-Earth objects
1,860 Jupiter Trojans
182,002 objects with measured visible albedo
Median diameter: 4.3 km | Median V-albedo: 0.075

Usage

from datasets import load_dataset

ds = load_dataset("juliensimon/neowise-asteroid-properties", split="train")
df = ds.to_pandas()

# Albedo distribution by population
df.groupby("population")["v_albedo"].describe()

# Large dark asteroids (low albedo, big diameter)
dark_big = df[(df["v_albedo"] < 0.05) & (df["diameter_km"] > 100)]

# NEOs with measured properties
neos = df[df["population"] == "neo"].sort_values("diameter_km", ascending=False)

# Diameter vs albedo scatter
import matplotlib.pyplot as plt
sample = df.dropna(subset=["diameter_km", "v_albedo"])
plt.scatter(sample["diameter_km"], sample["v_albedo"], s=0.5, alpha=0.3)
plt.xscale("log")
plt.xlabel("Diameter (km)")
plt.ylabel("Visible Albedo")

Data source

PDS Small Bodies Node — NEOWISE Diameters and Albedos V2.0

Based on observations by the Wide-field Infrared Survey Explorer (WISE) and its NEOWISE reactivation mission. See Mainzer et al. (2011), Masiero et al. (2011, 2014, 2017), Grav et al. (2012), Bauer et al. (2013), Nugent et al. (2015, 2016).

Pipeline

Source code: juliensimon/space-datasets

Citation

@dataset{neowise_asteroid_properties,
  author = {Simon, Julien},
  title = {NEOWISE Asteroid Diameters and Albedos},
  year = {2026},
  publisher = {Hugging Face},
  url = {https://huggingface.co/datasets/juliensimon/neowise-asteroid-properties},
  note = {Based on WISE/NEOWISE data from the PDS Small Bodies Node, Mainzer et al.}
}