IAA RAS IAA Minor Planet Database

2021 HJ2

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2443830676 ± 1.17e-05
Semi-major axis (a)1.1422292652 AU ± 1.13e-05
Inclination (i)10.42532260° ± 4.50e-04
Long. of Asc. Node (Ω)53.69585116° ± 7.26e-05
Arg. of Perihelion (ω)263.93345739° ± 2.80e-04
Mean Anomaly (M)194.92824859° ± 1.83e-02
Mean Motion (n)0.8073881138°/day ± 1.20e-05
Perihelion dist (q)0.86308777 AU ± 1.58e-05
Aphelion dist (Q)1.42137076 AU ± 1.94e-05
Orbital Period1.22075897 yr ± 1.82e-05
Physical Parameters
H (abs. magnitude)23.35
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.281″
Uncertainty2
Orbit TypeApollo
MOID0.020857 AU
Observations Used160
Oppositions1
Arc Total2021-2021
First Observation Used2021-04-07
Last Observation Used2021-05-23
Observations (163)
Date Type RA Dec Mag Band Observatory
2021-04-07 08:34:52 C 15 25 43.79 +10 09 03.0 – V G96
2021-04-07 08:43:40 C 15 25 43.62 +10 09 05.7 – V G96
2021-04-07 09:00:05 C 15 25 43.54 +10 09 09.1 – V G96
2021-04-07 09:08:52 C 15 25 43.38 +10 09 11.3 – V G96
2021-04-19 08:58:22 C 15 18 59.164 +10 50 34.52 – U F52
2021-04-19 09:13:10 C 15 18 58.263 +10 50 35.01 – U F52
2021-04-19 09:28:04 C 15 18 57.357 +10 50 35.37 – U F52
2021-04-20 02:09:06 C 15 18 03.13 +10 50 20.3 – V 033
2021-04-20 02:13:40 C 15 18 02.85 +10 50 20.6 – V 033
2021-04-20 06:28:08 C 15 17 51.73 +10 50 31.8 – V I52
2021-04-20 06:34:33 C 15 17 51.36 +10 50 32.0 – V I52
2021-04-20 06:40:59 C 15 17 50.92 +10 50 31.8 – V I52
2021-04-20 06:47:25 C 15 17 50.47 +10 50 31.8 – V I52
2021-04-20 14:35:01 C 15 17 20.851 +10 50 35.03 – V 568
2021-04-20 14:36:26 C 15 17 20.757 +10 50 34.97 – V 568
2021-04-20 14:37:51 C 15 17 20.663 +10 50 34.90 – V 568
2021-04-20 22:46:20 C 15 16 56.09 +10 50 02.1 – V L01
2021-04-20 22:49:42 C 15 16 55.90 +10 50 02.5 – V L01
2021-04-20 22:53:05 C 15 16 55.67 +10 50 02.2 – V L01
2021-04-20 22:54:05 C 15 16 55.58 +10 49 57.6 – V 033
2021-04-20 22:56:27 C 15 16 55.42 +10 50 01.7 – V L01
2021-04-20 22:57:44 C 15 16 55.33 +10 49 57.5 – V 033
2021-04-20 23:01:25 C 15 16 55.09 +10 49 57.6 – V 033
2021-04-20 23:01:30 C 15 16 55.08 +10 50 02.0 – V L01
2021-04-22 22:05:36 C 15 13 54.39 +10 46 38.8 – V 033
2021-04-22 22:08:36 C 15 13 54.15 +10 46 38.6 – V 033
2021-04-22 22:11:35 C 15 13 53.92 +10 46 38.3 – V 033
2021-04-22 22:14:38 C 15 13 53.69 +10 46 38.1 – V 033
2021-04-23 20:52:24 C 15 12 14.45 +10 43 38.9 – V 033
2021-04-23 20:55:04 C 15 12 14.22 +10 43 38.8 – V 033
2021-04-23 20:57:44 C 15 12 14.00 +10 43 38.1 – V 033
2021-04-23 21:00:28 C 15 12 13.79 +10 43 37.7 – V 033
2021-04-25 21:31:22 C 15 08 07.90 +10 33 46.8 – V 033
2021-04-25 21:32:07 C 15 08 07.81 +10 33 46.8 – V 033
2021-04-25 21:32:52 C 15 08 07.72 +10 33 46.6 – V 033
2021-04-25 21:33:37 C 15 08 07.66 +10 33 46.6 – V 033
2021-04-25 21:34:21 C 15 08 07.60 +10 33 46.4 – V 033
2021-04-25 21:35:11 C 15 08 07.51 +10 33 46.2 – V 033
2021-04-25 21:35:55 C 15 08 07.43 +10 33 45.8 – V 033
2021-04-26 23:33:26 C 15 05 35.04 +10 26 16.2 – V 033
2021-04-26 23:34:11 C 15 05 34.94 +10 26 16.1 – V 033
2021-04-27 22:14:31 C 15 03 11.47 +10 18 14.6 – V 033
2021-04-27 22:15:10 C 15 03 11.42 +10 18 14.3 – V 033
2021-04-29 20:15:06 C 14 57 39.30 +09 57 00.6 – V 033
2021-04-29 20:16:51 C 14 57 39.06 +09 56 59.7 – V 033
2021-04-29 20:18:36 C 14 57 38.81 +09 56 58.7 – V 033
2021-04-30 07:56:16 C 14 56 02.39 +09 50 51.8 – V I52
2021-04-30 07:58:21 C 14 56 02.07 +09 50 50.0 – V I52
2021-04-30 07:59:12 C 14 56 01.94 +09 50 49.5 – V I52
2021-04-30 08:10:11 C 14 56 00.30 +09 50 44.1 – o 691