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
2021-10-12 23:18:13 C 03 20 57.95 +20 10 35.6 – V Z99
2021-10-12 23:18:35 C 03 20 58.81 +20 10 50.3 – X 958
2021-10-12 23:21:31 C 03 20 57.85 +20 09 52.9 – V Z99
2021-10-12 23:24:44 C 03 20 58.66 +20 09 31.1 – X 958
2021-10-12 23:30:53 C 03 20 58.52 +20 08 11.8 – X 958
2021-10-12 23:37:02 C 03 20 58.33 +20 06 52.6 – X 958
2021-10-12 23:38:59 C 03 20 57.23 +20 06 13.6 – V C23
2021-10-12 23:39:54 C 03 20 57.12 +20 06 01.6 – V C23
2021-10-12 23:41:43 C 03 20 57.17 +20 05 38.5 – V C23
2021-10-12 23:43:12 C 03 20 58.18 +20 05 33.5 – X 958
2021-10-12 23:43:33 C 03 20 57.09 +20 05 15.6 – V C23
2021-10-12 23:47:11 C 03 20 57.01 +20 04 27.9 – V C23
2021-10-12 23:49:56 C 03 20 56.92 +20 03 53.3 – V C23
2021-10-13 00:11:43 C 03 20 56.19 +19 59 24.2 – V 204
2021-10-13 00:15:24 C 03 20 56.08 +19 58 36.9 – V 204
2021-10-13 00:19:03 C 03 20 55.97 +19 57 49.6 – V 204
2021-10-13 00:22:45 C 03 20 55.84 +19 57 02.4 – V 204
2021-10-13 00:26:25 C 03 20 55.75 +19 56 14.9 – V 204
2021-10-13 08:02:29 C 03 20 55.97 +18 20 58.8 – V 703
2021-10-13 08:10:03 C 03 20 55.71 +18 19 26.2 – V 703
2021-10-13 08:17:39 C 03 20 55.39 +18 17 53.6 – V 703
2021-10-13 08:25:14 C 03 20 55.18 +18 16 20.2 – V 703
2021-10-13 10:30:44 C 03 20 50.57 +17 50 48.3 – V 703
2021-10-13 10:31:24 C 03 20 50.55 +17 50 40.7 – V 703
2021-10-13 10:32:05 C 03 20 50.49 +17 50 32.2 – V 703
2021-10-13 13:30:15 C 03 20 49.928 +17 15 20.55 – U F52
2021-10-13 13:48:47 C 03 20 49.225 +17 11 39.30 – U F52
2021-10-13 14:07:11 C 03 20 48.552 +17 07 59.87 – U F52
2021-10-13 14:25:40 C 03 20 47.923 +17 04 19.86 – U F52
2021-10-13 20:46:57 C 03 20 57.32 +15 49 39.3 – Z C95
2021-10-13 20:59:04 C 03 20 57.08 +15 47 23.3 – Z C95
2021-10-13 21:11:05 C 03 20 56.96 +15 45 08.4 – Z C95
2021-10-13 21:24:30 C 03 20 56.71 +15 42 37.4 – Z C95
2021-10-13 21:38:43 C 03 20 56.47 +15 39 57.9 – Z C95
2021-10-14 03:33:57 C 03 20 48.40 +14 35 03.3 – V G40
2021-10-14 03:42:47 C 03 20 48.05 +14 33 26.4 – V G40
2021-10-14 04:13:40 C 03 20 46.91 +14 27 50.3 – V G40
2021-10-14 04:23:11 C 03 20 46.60 +14 26 06.7 – V G40
2021-10-14 10:49:24 C 03 20 50.38 +13 18 07.2 – V T08
2021-10-14 10:52:04 C 03 20 50.26 +13 17 40.0 – V T08
2021-10-14 10:56:15 C 03 20 50.12 +13 16 56.7 – V T08
2021-10-14 11:03:38 C 03 20 49.80 +13 15 40.2 – V T08
2021-10-14 11:27:25 C 03 20 48.92 +13 11 34.6 – V T08
2021-10-14 17:35:57 C 03 20 50.68 +12 08 40.3 – V N31
2021-10-14 18:02:01 C 03 20 49.92 +12 04 23.9 – V N31
2021-10-14 18:28:09 C 03 20 49.12 +12 00 05.3 – V N31
2021-10-14 18:48:49 C 03 20 48.54 +11 56 41.5 – V N31
2021-10-15 19:27:14 C 03 20 37.15 +08 11 10.1 – V N31
2021-10-16 05:22:43 C 03 20 31.82 +06 51 32.6 – u 807
2021-10-16 05:27:17 C 03 20 31.64 +06 50 56.1 – u 807