2021 MD

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3250957533 ± 1.50e-08
Semi-major axis (a)1.5765887138 AU ± 3.40e-09
Inclination (i)8.51356099° ± 2.98e-06
Long. of Asc. Node (Ω)145.26127258° ± 1.24e-05
Arg. of Perihelion (ω)108.86119467° ± 1.73e-05
Mean Anomaly (M)90.59727601° ± 6.21e-06
Mean Motion (n)0.4978914360°/day ± 1.61e-09
Perihelion dist (q)1.06404642 AU ± 2.37e-08
Aphelion dist (Q)2.08913101 AU ± 2.40e-08
Orbital Period1.97960080 yr ± 6.40e-09
Physical Parameters
H (abs. magnitude)23.53
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.225″
Uncertainty0
Orbit TypeAmor
MOID0.131832 AU
Observations Used116
Oppositions3
Arc Total2017-2023
First Observation Used2017-03-04
Last Observation Used2023-08-19
Observations (117)
Date Type RA Dec Mag Band Observatory
2023-07-14 08:43:28 C 22 19 33.48 +13 59 34.8 u H21
2023-07-21 07:34:10 C 22 23 57.19 +08 49 53.0 u H21
2023-07-21 07:42:24 C 22 23 57.24 +08 49 37.2 u H21
2023-07-23 07:53:36 C 22 24 35.94 +07 16 55.5 u H21
2023-07-23 07:55:37 C 22 24 35.94 +07 16 51.5 u H21
2023-07-23 08:05:40 C 22 24 35.98 +07 16 32.0 u H21
2023-07-23 08:08:30 C 22 24 35.93 +07 16 26.1 u H21
2023-07-26 12:55:11 C 22 25 06.591 +04 47 19.97 X F51
2023-07-26 12:56:14 C 22 25 06.553 +04 47 18.02 X F51
2023-07-26 13:13:09 C 22 25 06.439 +04 46 45.11 X F51
2023-07-26 13:14:12 C 22 25 06.420 +04 46 43.00 X F51
2023-07-26 13:33:00 C 22 25 06.268 +04 46 06.07 X F51
2023-07-26 13:34:08 C 22 25 06.264 +04 46 03.90 X F51
2023-08-19 09:45:01 C 22 15 42.851 -12 05 30.16 X F51
2023-08-19 09:57:43 C 22 15 42.419 -12 05 48.05 X F51
2023-08-19 10:10:08 C 22 15 41.994 -12 06 05.43 X F51
2023-08-19 10:22:10 C 22 15 41.592 -12 06 22.48 X F51