IAA RAS IAA Minor Planet Database

2021 HK

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4845703917 ± 2.00e+00
Semi-major axis (a)1.7722416657 AU ± 3.00e+00
Inclination (i)0.88558305° ± 4.00e+00
Long. of Asc. Node (Ω)80.36885955° ± 5.00e+00
Arg. of Perihelion (ω)79.77410776° ± 6.00e+00
Mean Anomaly (M)356.42511669° ± 8.71e-02
Mean Motion (n)0.4177445400°/day ± 1.06e+00
Perihelion dist (q)0.91346480 AU ± 3.87e+00
Aphelion dist (Q)2.63106680 AU ± 5.69e+00
Orbital Period2.35935500 yr ± 5.99e+00
Physical Parameters
H (abs. magnitude)26.47
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.432″
Uncertainty2
Orbit TypeApollo
MOID0.009986 AU
Observations Used49
Oppositions1
Arc Total2021-2021
First Observation Used—
Last Observation Used2021-04-24
Observations (49)
Date Type RA Dec Mag Band Observatory
2021-04-17 00:38:34 C 14 32 15.90 +30 49 32.3 – o K88
2021-04-17 00:40:35 C 14 32 17.18 +30 48 25.2 – o K88
2021-04-17 08:35:42 C 14 37 31.24 +26 43 41.7 – V G96
2021-04-17 08:43:55 C 14 37 35.03 +26 39 38.6 – V G96
2021-04-17 08:52:05 C 14 37 38.81 +26 35 39.9 – V G96
2021-04-17 09:00:18 C 14 37 42.63 +26 31 39.5 – V G96
2021-04-17 10:08:43 C 14 38 14.11 +25 58 29.4 – V I52
2021-04-17 10:10:21 C 14 38 14.88 +25 57 41.9 – V I52
2021-04-17 10:12:00 C 14 38 15.64 +25 56 54.3 – V I52
2021-04-17 10:13:39 C 14 38 16.40 +25 56 06.7 – V I52
2021-04-17 11:41:48 C 14 38 57.54 +25 13 57.5 – V I52
2021-04-17 11:43:27 C 14 38 58.29 +25 13 10.9 – V I52
2021-04-17 11:45:05 C 14 38 59.07 +25 12 23.9 – V I52
2021-04-17 11:46:44 C 14 38 59.87 +25 11 37.2 – V I52
2021-04-17 22:25:40 C 14 44 41.08 +20 36 27.5 – V J95
2021-04-17 22:39:15 C 14 44 46.00 +20 31 11.2 – V J95
2021-04-17 22:49:48 C 14 44 49.85 +20 27 05.8 – V J95
2021-04-18 00:01:47 C 14 45 10.37 +20 00 05.9 – d L01
2021-04-18 00:04:05 C 14 45 11.19 +19 59 12.7 – d L01
2021-04-18 00:06:23 C 14 45 11.96 +19 58 20.2 – d L01
2021-04-18 00:08:40 C 14 45 12.67 +19 57 28.0 – d L01
2021-04-18 00:10:32 C 14 45 14.31 +19 56 52.0 – V 104
2021-04-18 00:28:49 C 14 45 20.23 +19 49 52.4 – V 104
2021-04-18 00:31:10 C 14 45 20.98 +19 48 59.2 – V 104
2021-04-18 05:56:45 C 14 47 42.03 +17 50 55.3 – V I52
2021-04-18 05:57:34 C 14 47 42.28 +17 50 38.7 – V I52
2021-04-18 05:58:23 C 14 47 42.50 +17 50 21.5 – V I52
2021-04-18 08:31:57 C 14 48 26.13 +16 57 45.2 – V 654
2021-04-18 09:10:48 C 14 48 36.02 +16 44 45.0 – V 654
2021-04-18 09:40:53 C 14 48 43.63 +16 34 43.8 – V 654
2021-04-19 08:17:59 C 14 55 09.94 +10 13 46.4 – V I52
2021-04-19 08:18:48 C 14 55 10.07 +10 13 34.1 – V I52
2021-04-19 08:19:37 C 14 55 10.19 +10 13 23.1 – V I52
2021-04-19 08:20:26 C 14 55 10.33 +10 13 10.8 – V I52
2021-04-19 21:41:23 C 14 58 04.10 +07 18 10.3 – V 033
2021-04-19 21:42:47 C 14 58 04.30 +07 17 53.8 – V 033
2021-04-19 21:44:12 C 14 58 04.50 +07 17 37.2 – V 033
2021-04-23 00:31:14 C 15 06 57.71 -02 30 33.5 – V 033
2021-04-23 00:34:19 C 15 06 57.82 -02 30 49.1 – V 033
2021-04-23 00:37:24 C 15 06 57.95 -02 31 04.6 – V 033
2021-04-23 00:40:33 C 15 06 58.07 -02 31 20.9 – V 033
2021-04-23 05:53:45 C 15 07 28.57 -02 56 53.9 – V 291
2021-04-23 06:07:18 C 15 07 29.05 -02 58 00.8 – V 291
2021-04-23 06:20:57 C 15 07 29.51 -02 59 07.9 – V 291
2021-04-24 06:50:49 C 15 09 01.64 -04 47 02.3 – o 691
2021-04-24 07:16:33 C 15 09 02.08 -04 48 44.6 – o 691
2021-04-24 07:42:17 C 15 09 02.51 -04 50 25.9 – o 691
2021-04-24 09:41:07 C 15 09 04.44 -04 58 10.6 – V I52
2021-04-24 09:45:48 C 15 09 04.47 -04 58 28.8 – V I52