2021 HM12

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5185762897 ± 6.00e-05
Semi-major axis (a)2.6952242532 AU ± 3.19e-04
Inclination (i)17.43908075° ± 1.02e-03
Long. of Asc. Node (Ω)74.22545720° ± 1.12e-03
Arg. of Perihelion (ω)167.34034893° ± 1.39e-03
Mean Anomaly (M)0.44772406° ± 6.71e-02
Mean Motion (n)0.2227511306°/day ± 3.95e-05
Perihelion dist (q)1.29754486 AU ± 2.23e-04
Aphelion dist (Q)4.09290365 AU ± 5.10e-04
Orbital Period4.42478689 yr ± 7.85e-04
Physical Parameters
H (abs. magnitude)21.22
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.414″
Uncertainty2
Orbit TypeAmor
MOID0.288191 AU
Observations Used24
Oppositions1
Arc Total2021-2021
First Observation Used2021-04-17
Last Observation Used2021-06-07
Observations (24)
Date Type RA Dec Mag Band Observatory
2021-04-17 06:54:45 C 13 42 54.23 +33 19 12.7 V G96
2021-04-17 07:03:09 C 13 42 53.88 +33 19 10.2 V G96
2021-04-17 07:11:32 C 13 42 53.64 +33 19 06.9 V G96
2021-04-17 07:19:56 C 13 42 53.22 +33 19 04.5 V G96
2021-05-05 06:54:42 C 13 28 08.26 +28 01 33.1 V G96
2021-05-05 07:02:47 C 13 28 07.97 +28 01 23.7 V G96
2021-05-05 07:10:53 C 13 28 07.72 +28 01 14.0 V G96
2021-05-05 07:18:59 C 13 28 07.48 +28 01 04.9 V G96
2021-06-01 10:12:52 C 13 25 52.661 +09 37 18.02 U F51
2021-06-01 10:27:56 C 13 25 52.974 +09 36 46.35 U F51
2021-06-01 10:42:59 C 13 25 53.267 +09 36 15.42 U F51
2021-06-01 21:05:32 C 13 26 09.14 +09 14 20.1 V L01
2021-06-01 21:14:31 C 13 26 09.38 +09 14 01.6 V L01
2021-06-01 21:23:29 C 13 26 09.59 +09 13 42.6 V L01
2021-06-02 00:17:19 C 13 26 14.55 +09 08 00.8 V 807
2021-06-02 00:25:18 C 13 26 14.72 +09 07 44.0 V 807
2021-06-02 00:33:15 C 13 26 14.89 +09 07 27.2 V 807
2021-06-02 06:48:05 C 13 26 23.45 +08 53 57.3 V I52
2021-06-02 06:55:21 C 13 26 23.58 +08 53 41.7 V I52
2021-06-02 07:02:38 C 13 26 23.73 +08 53 26.1 V I52
2021-06-07 05:30:29 C 13 30 03.03 +04 40 00.4 V G96
2021-06-07 05:37:58 C 13 30 03.24 +04 39 43.9 V G96
2021-06-07 05:45:25 C 13 30 03.46 +04 39 28.9 V G96
2021-06-07 05:52:52 C 13 30 03.72 +04 39 12.5 V G96