2021 TD21

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3578359367 ± 1.88e-06
Semi-major axis (a)1.9115535947 AU ± 7.83e-06
Inclination (i)13.33752591° ± 6.49e-05
Long. of Asc. Node (Ω)212.02269730° ± 2.44e-05
Arg. of Perihelion (ω)240.35226976° ± 1.34e-04
Mean Anomaly (M)167.93519313° ± 3.23e-03
Mean Motion (n)0.3729344967°/day ± 2.29e-06
Perihelion dist (q)1.22753102 AU ± 6.18e-06
Aphelion dist (Q)2.59557617 AU ± 1.12e-05
Orbital Period2.64289384 yr ± 1.62e-05
Physical Parameters
H (abs. magnitude)21.71
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.194″
Uncertainty1
Orbit TypeAmor
MOID0.308990 AU
Observations Used66
Oppositions1
Arc Total2021-2022
First Observation Used2021-10-13
Last Observation Used2022-01-26
Observations (70)
Date Type RA Dec Mag Band Observatory
2021-12-06 04:53:32 C 03 10 05.28 -12 35 14.0 V G96
2021-12-06 05:01:42 C 03 10 05.41 -12 35 22.5 V G96
2021-12-06 05:09:51 C 03 10 05.51 -12 35 31.8 V G96
2021-12-15 02:15:53 C 03 16 46.92 -15 38 01.9 V 807
2021-12-15 02:21:12 C 03 16 47.08 -15 38 05.5 V 807
2021-12-15 02:26:32 C 03 16 47.27 -15 38 09.3 V 807
2022-01-02 03:14:49 C 03 40 32.84 -17 46 08.2 o 291
2022-01-02 03:30:59 C 03 40 33.87 -17 46 07.5 o 291
2022-01-02 03:47:09 C 03 40 34.91 -17 46 07.1 o 291
2022-01-02 03:57:48 C 03 40 34.70 -17 45 44.2 u 807
2022-01-02 04:06:57 C 03 40 35.29 -17 45 44.4 u 807
2022-01-02 04:15:39 C 03 40 35.88 -17 45 44.2 u 807
2022-01-03 05:04:50 C 03 42 21.53 -17 44 53.2 o 691
2022-01-03 05:18:37 C 03 42 22.47 -17 44 52.5 o 691
2022-01-05 04:12:04 C 03 45 47.91 -17 40 24.5 o 691
2022-01-05 04:27:27 C 03 45 48.96 -17 40 22.2 o 691
2022-01-05 04:42:50 C 03 45 50.02 -17 40 20.8 o 691
2022-01-26 02:32:47 C 04 30 01.24 -14 30 16.4 V 807
2022-01-26 02:40:45 C 04 30 02.02 -14 30 11.8 V 807
2022-01-26 02:48:44 C 04 30 02.75 -14 30 06.4 V 807