2021 TC21

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4969636118 ± 1.11e-04
Semi-major axis (a)1.9862034234 AU ± 4.35e-04
Inclination (i)1.63203940° ± 2.72e-04
Long. of Asc. Node (Ω)209.28216982° ± 1.15e-04
Arg. of Perihelion (ω)157.93524663° ± 9.08e-04
Mean Anomaly (M)171.32785337° ± 1.75e-01
Mean Motion (n)0.3521086442°/day ± 1.16e-04
Perihelion dist (q)0.99913260 AU ± 3.10e-04
Aphelion dist (Q)2.97327425 AU ± 6.88e-04
Orbital Period2.79921070 yr ± 9.20e-04
Physical Parameters
H (abs. magnitude)26.48
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.443″
Uncertainty3
Orbit TypeApollo
MOID0.007037 AU
Observations Used109
Oppositions1
Arc Total2021-2021
First Observation Used2021-10-15
Last Observation Used2021-10-18
Observations (112)
Date Type RA Dec Mag Band Observatory
2021-10-15 20:45:06 C 00 00 19.14 +15 37 04.5 o K88
2021-10-15 20:45:30 C 00 00 20.23 +15 37 08.2 o K88
2021-10-15 20:45:55 C 00 00 21.34 +15 37 11.8 o K88
2021-10-15 20:46:20 C 00 00 22.43 +15 37 15.5 o K88
2021-10-15 21:01:13 C 00 01 01.66 +15 39 26.3 o K88
2021-10-15 21:02:07 C 00 01 04.02 +15 39 33.8 o K88
2021-10-15 21:02:33 C 00 01 05.12 +15 39 37.9 o K88
2021-10-15 21:03:02 C 00 01 06.40 +15 39 42.3 o K88
2021-10-15 21:03:55 C 00 01 08.81 +15 39 49.4 o K88
2021-10-15 21:20:38 C 00 01 52.76 +15 42 16.2 o K88
2021-10-15 21:21:06 C 00 01 54.15 +15 42 20.6 o K88
2021-10-15 21:22:10 C 00 01 56.81 +15 42 29.3 o K88
2021-10-15 21:23:08 C 00 01 59.46 +15 42 37.3 o K88
2021-10-15 21:27:02 C 00 02 12.77 +15 43 30.2 X 595
2021-10-15 21:28:50 C 00 02 17.55 +15 43 46.2 X 595
2021-10-15 21:30:48 C 00 02 22.67 +15 44 03.0 X 595
2021-10-15 21:45:12 C 00 03 07.65 +15 46 18.3 V I93
2021-10-15 21:48:13 C 00 03 15.52 +15 46 44.6 V I93
2021-10-15 21:51:16 C 00 03 23.52 +15 47 11.2 V I93
2021-10-15 22:00:46 C 00 03 42.51 +15 48 42.1 V K83
2021-10-15 22:04:42 C 00 03 52.79 +15 49 15.5 V K83
2021-10-15 22:08:38 C 00 04 03.10 +15 49 49.1 V K83
2021-10-15 22:32:42 C 00 05 02.17 +15 52 28.6 o K88
2021-10-15 22:34:31 C 00 05 06.96 +15 52 43.5 o K88
2021-10-15 22:36:00 C 00 05 13.38 +15 53 23.7 V L01
2021-10-15 22:36:18 C 00 05 11.68 +15 52 58.7 o K88
2021-10-15 22:37:15 C 00 05 16.63 +15 53 34.0 V L01
2021-10-15 22:38:29 C 00 05 19.89 +15 53 44.6 V L01
2021-10-15 22:39:44 C 00 05 23.16 +15 53 55.2 V L01
2021-10-15 22:40:58 C 00 05 26.38 +15 54 05.1 V L01
2021-10-15 23:01:34 C 00 06 27.80 +15 56 07.1 V Z80
2021-10-15 23:14:58 C 00 07 02.95 +15 57 41.5 V Z99
2021-10-15 23:15:44 C 00 07 04.98 +15 57 47.9 V Z99
2021-10-15 23:16:36 C 00 07 07.28 +15 57 54.8 V Z99
2021-10-15 23:17:23 C 00 07 09.33 +15 58 01.4 V Z99
2021-10-15 23:18:17 C 00 07 11.67 +15 58 08.8 V Z99
2021-10-15 23:19:45 C 00 07 15.41 +15 58 38.4 V Z80
2021-10-15 23:26:25 C 00 07 32.83 +15 59 33.2 V Z80
2021-10-16 00:39:48 C 00 11 24.79 +16 11 21.3 X W34
2021-10-16 00:44:31 C 00 11 19.29 +16 22 01.1 X Y00
2021-10-16 00:47:26 C 00 11 26.74 +16 22 25.1 X Y00
2021-10-16 00:49:46 C 00 11 50.81 +16 12 46.6 X W34
2021-10-16 00:50:23 C 00 11 34.15 +16 22 49.0 X Y00
2021-10-16 00:59:48 C 00 12 16.96 +16 14 11.8 X W34
2021-10-16 01:11:39 C 00 12 03.23 +16 14 29.1 Z C95
2021-10-16 01:21:29 C 00 12 28.93 +16 15 43.9 Z C95
2021-10-16 01:31:18 C 00 12 54.65 +16 16 58.3 Z C95
2021-10-16 01:41:09 C 00 13 20.40 +16 18 12.9 Z C95
2021-10-16 01:50:59 C 00 13 46.15 +16 19 26.3 Z C95
2021-10-16 02:53:22 C 00 17 21.01 +16 29 12.1 X 858