IAA RAS IAA Minor Planet Database

2021 TH12

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4852844843 ± 6.12e-05
Semi-major axis (a)1.8260037268 AU ± 2.08e-04
Inclination (i)16.37051249° ± 1.42e-03
Long. of Asc. Node (Ω)201.78922709° ± 1.40e-04
Arg. of Perihelion (ω)132.10164535° ± 1.96e-04
Mean Anomaly (M)254.60219148° ± 1.06e-01
Mean Motion (n)0.3994475730°/day ± 6.83e-05
Perihelion dist (q)0.93987245 AU ± 1.55e-04
Aphelion dist (Q)2.71213500 AU ± 3.29e-04
Orbital Period2.46747346 yr ± 4.22e-04
Physical Parameters
H (abs. magnitude)22.87
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.312″
Uncertainty3
Orbit TypeApollo
MOID0.038696 AU
Observations Used176
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-11
Last Observation Used2021-11-10
Observations (179)
Date Type RA Dec Mag Band Observatory
2021-10-11 22:44:43 C 03 20 58.50 +25 54 32.2 – Z C95
2021-10-11 22:47:39 C 03 20 58.40 +25 53 48.6 – Z C95
2021-10-11 22:50:36 C 03 20 58.33 +25 53 04.5 – Z C95
2021-10-11 22:53:34 C 03 20 58.24 +25 52 20.2 – Z C95
2021-10-11 22:57:58 C 03 20 58.13 +25 51 14.0 – Z C95
2021-10-11 23:01:25 C 03 21 01.60 +25 50 44.2 – V G40
2021-10-11 23:11:12 C 03 21 01.34 +25 48 19.2 – V G40
2021-10-11 23:41:39 C 03 21 00.71 +25 40 49.7 – V G40
2021-10-12 00:23:51 C 03 20 56.32 +25 30 03.7 – V B37
2021-10-12 00:25:58 C 03 20 56.28 +25 29 32.4 – V B37
2021-10-12 00:28:06 C 03 20 56.18 +25 29 00.7 – V B37
2021-10-12 00:30:02 C 03 20 56.13 +25 28 32.0 – V B37
2021-10-12 00:31:47 C 03 20 56.06 +25 28 05.7 – V B37
2021-10-12 00:33:37 C 03 20 56.01 +25 27 38.8 – V B37
2021-10-12 02:24:18 C 03 21 00.12 +24 59 56.3 – V I22
2021-10-12 02:24:49 C 03 21 00.04 +24 59 48.7 – V I22
2021-10-12 02:26:51 C 03 21 00.05 +24 59 19.4 – V I22
2021-10-12 02:27:21 C 03 21 00.00 +24 59 11.2 – V I22
2021-10-12 02:27:52 C 03 21 00.03 +24 59 03.3 – V I22
2021-10-12 02:31:23 C 03 21 00.01 +24 58 12.2 – V I22
2021-10-12 02:31:52 C 03 20 59.98 +24 58 05.3 – V I22
2021-10-12 02:34:54 C 03 20 59.90 +24 57 21.3 – V I22
2021-10-12 02:36:24 C 03 20 59.91 +24 57 00.4 – V I22
2021-10-12 02:36:55 C 03 20 59.90 +24 56 51.8 – V I22
2021-10-12 02:38:55 C 03 20 59.81 +24 56 22.6 – V I22
2021-10-12 02:40:58 C 03 20 59.80 +24 55 53.3 – V I22
2021-10-12 02:43:28 C 03 20 59.75 +24 55 17.4 – V I22
2021-10-12 02:43:59 C 03 20 59.73 +24 55 09.7 – V I22
2021-10-12 02:44:59 C 03 20 59.75 +24 54 54.5 – V I22
2021-10-12 02:45:29 C 03 20 59.69 +24 54 47.1 – V I22
2021-10-12 02:46:59 C 03 20 59.71 +24 54 26.4 – V I22
2021-10-12 02:48:31 C 03 20 59.68 +24 54 04.1 – V I22
2021-10-12 02:50:02 C 03 20 59.60 +24 53 42.3 – V I22
2021-10-12 02:51:01 C 03 20 59.63 +24 53 26.8 – V I22
2021-10-12 02:51:32 C 03 20 59.58 +24 53 20.5 – V I22
2021-10-12 04:44:16 C 03 21 00.65 +24 26 04.4 – V 734
2021-10-12 04:46:05 C 03 21 00.61 +24 25 37.7 – V 734
2021-10-12 04:47:31 C 03 21 00.60 +24 25 17.1 – V 734
2021-10-12 06:57:41 C 03 20 57.03 +23 54 17.1 – q H36
2021-10-12 07:07:26 C 03 20 56.63 +23 51 58.3 – q H36
2021-10-12 07:17:02 C 03 20 56.37 +23 49 42.2 – q H36
2021-10-12 21:12:10 C 03 20 59.91 +20 38 00.8 – V K74
2021-10-12 21:16:03 C 03 20 59.88 +20 37 10.3 – V K74
2021-10-12 21:20:26 C 03 20 59.83 +20 36 13.6 – V K74
2021-10-12 21:24:27 C 03 20 59.72 +20 35 21.2 – V K74
2021-10-12 21:29:12 C 03 20 59.66 +20 34 19.7 – V K74
2021-10-12 21:53:26 C 03 21 01.00 +20 29 17.5 – V J57
2021-10-12 22:10:35 C 03 21 00.67 +20 25 35.7 – V J57
2021-10-12 22:27:50 C 03 21 00.32 +20 21 52.7 – V J57
2021-10-12 23:14:54 C 03 20 57.99 +20 11 18.3 – V Z99