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
2021-10-17 19:57:37 C 01 50 13.80 +19 27 20.6 V Z80
2021-10-17 20:13:43 C 01 50 38.21 +19 28 46.9 o K88
2021-10-17 20:17:57 C 01 50 45.49 +19 28 55.1 o K88
2021-10-17 20:22:43 C 01 50 53.75 +19 29 05.3 o K88
2021-10-17 20:26:59 C 01 51 01.07 +19 29 13.8 o K88
2021-10-18 00:01:42 C 01 56 59.54 +19 35 08.8 o K88
2021-10-18 00:05:59 C 01 57 06.53 +19 35 14.6 o K88
2021-10-18 00:10:15 C 01 57 13.55 +19 35 19.3 o K88
2021-10-18 20:26:09 C 02 28 26.12 +19 50 33.0 o K88
2021-10-18 20:39:05 C 02 28 42.64 +19 50 39.0 o K88
2021-10-18 23:06:41 C 02 31 45.39 +19 51 28.0 o K88
2021-10-18 23:19:35 C 02 32 01.04 +19 51 29.5 o K88