2102 Tantalus — IAA Minor Planet Database

Orbital Elements

Epoch (TDB)	2025-11-21 (JD 2461000.5)
Eccentricity (e)	0.2993501212 ± 6.46e-09
Semi-major axis (a)	1.2900609716 AU ± 2.87e-10
Inclination (i)	64.00517356° ± 3.04e-06
Long. of Asc. Node (Ω)	94.35226460° ± 4.17e-07
Arg. of Perihelion (ω)	61.49851571° ± 2.17e-06
Mean Anomaly (M)	347.35567572° ± 1.82e-06
Mean Motion (n)	0.6726620417°/day ± 2.24e-10
Perihelion dist (q)	0.90388106 AU ± 8.33e-09
Aphelion dist (Q)	1.67624088 AU ± 8.34e-09
Orbital Period	1.46526223 yr ± 4.88e-10

Physical Parameters

H (abs. magnitude)	16.00
G (slope)	0.15

Orbit Solution

Source	IAA
Solution Date	2026-05-31
RMS Residual	0.249″
Uncertainty	0
Orbit Type	Apollo
MOID	0.042239 AU
Observations Used	1824
Radar Obs Used	1
Gaia Obs Used	127
Oppositions	13
Arc Total	1976-2026
First Observation Used	1976-01-04
Last Observation Used	2026-04-05

Observations (2255)

Date	Type	RA	Dec	Mag	Band	Observatory
2023-07-16 20:18:32	s	1 +130799.24	2 -93822.410	0.82	–	C57
2023-07-16 20:38:32	S	21 36 30.821	-84 46 42.56	–	V	C57
2023-07-16 20:38:32	s	1 +132002.49	1 -92673.919	0.032	–	C57
2023-07-16 20:58:32	S	21 36 14.314	-84 47 16.55	–	V	C57
2023-07-16 20:58:32	s	1 +133197.18	3 -91519.458	0.932	–	C57
2023-07-16 22:58:30	S	21 34 49.769	-84 50 58.13	–	V	C57
2023-07-16 22:58:30	s	1 +140184.22	5 -84473.370	0.98	–	C57
2023-07-16 23:18:32	S	21 34 35.220	-84 51 36.18	–	V	C57
2023-07-16 23:18:32	s	1 +141318.73	4 -83280.385	0.196	–	C57
2023-07-16 23:58:31	S	21 34 09.574	-84 52 55.88	–	V	C57
2023-07-16 23:58:31	s	1 +143561.99	1 -80879.461	0.281	–	C57
2023-07-17 00:18:31	S	21 33 54.053	-84 53 22.49	–	V	C57
2023-07-17 00:18:31	s	1 +144670.91	3 -79671.842	0.364	–	C57
2023-07-17 00:38:31	S	21 33 40.526	-84 54 00.68	–	V	C57
2023-07-17 00:38:31	s	1 +145771.22	6 -78459.520	0.377	–	C57
2023-07-17 00:46:51	C	21 34 01.939	-84 50 20.47	–	V	M22
2023-07-17 00:58:31	S	21 33 24.792	-84 54 34.52	–	V	C57
2023-07-17 00:58:31	s	1 +146863.15	2 -77242.723	0.551	–	C57
2023-07-17 01:37:37	C	21 33 29.215	-84 51 51.59	–	V	M22
2023-07-17 01:42:55	C	21 33 26.006	-84 52 00.44	–	V	M22
2023-07-17 01:50:30	C	21 33 20.990	-84 52 14.48	–	V	M22
2023-07-17 01:58:32	S	21 32 42.835	-84 56 23.64	–	V	C57
2023-07-17 01:58:32	s	1 +150088.19	9 -73566.285	0.891	–	C57
2023-07-17 02:18:32	S	21 32 29.918	-84 56 59.86	–	V	C57
2023-07-17 02:18:32	s	1 +151146.43	8 -72332.527	0.81	–	C57
2023-07-17 02:38:32	S	21 32 12.394	-84 57 36.40	–	V	C57
2023-07-17 02:38:32	s	1 +152196.18	9 -71094.746	0.91	–	C57
2023-07-17 02:58:31	S	21 31 58.015	-84 58 10.60	–	V	C57
2023-07-17 02:58:31	s	1 +153237.67	3 -69853.143	0.415	–	C57
2023-07-17 03:18:31	S	21 31 41.938	-84 58 45.12	–	V	C57
2023-07-17 03:18:31	s	1 +154270.84	8 -68607.790	0.309	–	C57
2023-07-17 03:38:31	S	21 31 28.505	-84 59 24.90	–	V	C57
2023-07-17 03:38:31	s	1 +155295.60	2 -67358.732	0.51	–	C57
2023-07-17 03:58:31	S	21 31 13.322	-84 59 58.88	–	V	C57
2023-07-17 03:58:31	s	1 +156312.15	5 -66106.157	0.239	–	C57
2023-07-17 04:18:31	S	21 31 01.277	-85 00 33.59	–	V	C57
2023-07-17 04:18:31	s	1 +157320.46	9 -64850.135	0.48	–	C57
2023-07-17 04:38:32	S	21 30 42.655	-85 01 10.78	–	V	C57
2023-07-17 04:38:32	s	1 +158320.43	2 -63590.712	0.154	–	C57
2023-07-17 04:58:32	S	21 30 27.730	-85 01 46.96	–	V	C57
2023-07-17 04:58:32	s	1 +159312.26	5 -62328.063	0.479	–	C57
2023-07-17 06:18:31	S	21 29 28.862	-85 04 03.14	–	V	C57
2023-07-17 06:18:31	s	1 +163197.89	5 -57246.731	0.305	–	C57
2023-07-17 06:58:31	S	21 28 57.082	-85 05 18.06	–	V	C57
2023-07-17 06:58:31	s	1 +165091.99	8 -54688.892	0.672	–	C57
2023-07-17 07:18:31	S	21 28 41.938	-85 05 48.95	–	V	C57
2023-07-17 07:18:31	s	1 +166027.04	5 -53406.017	0.185	–	C57
2023-07-17 07:58:32	S	21 28 11.146	-85 07 04.01	–	V	C57
2023-07-17 07:58:32	s	1 +167873.00	0 -50832.700	0.843	–	C57
2023-07-17 08:18:32	S	21 27 55.740	-85 07 37.52	–	V	C57

« Prev 1 2 … 41 42 43 … 45 46 Next » 2255 observations

2102 Tantalus (1975 YA)