IAA RAS IAA Minor Planet Database

2021 HH

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5356440371 ± 3.46e-04
Semi-major axis (a)1.4432241959 AU ± 7.99e-04
Inclination (i)9.12105813° ± 6.29e-03
Long. of Asc. Node (Ω)206.01488920° ± 5.87e-04
Arg. of Perihelion (ω)100.69511255° ± 2.46e-03
Mean Anomaly (M)196.73721663° ± 7.52e-01
Mean Motion (n)0.5684752669°/day ± 4.72e-04
Perihelion dist (q)0.67016976 AU ± 6.22e-04
Aphelion dist (Q)2.21627863 AU ± 1.33e-03
Orbital Period1.73380680 yr ± 1.44e-03
Physical Parameters
H (abs. magnitude)25.09
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.241″
Uncertainty3
Orbit TypeApollo
MOID0.018586 AU
Observations Used52
Oppositions1
Arc Total2021-2021
First Observation Used2021-04-16
Last Observation Used2021-04-29
Observations (52)
Date Type RA Dec Mag Band Observatory
2021-04-16 11:41:09 C 14 05 10.228 -11 06 03.63 – U F51
2021-04-16 11:59:05 C 14 05 09.970 -11 05 05.81 – U F51
2021-04-16 12:16:59 C 14 05 09.702 -11 04 08.03 – U F51
2021-04-16 12:34:53 C 14 05 09.467 -11 03 10.13 – U F51
2021-04-16 15:36:58 C 14 05 10.05 -10 52 03.0 – V 474
2021-04-16 15:42:05 C 14 05 10.00 -10 51 45.9 – V 474
2021-04-16 15:47:13 C 14 05 09.95 -10 51 28.9 – V 474
2021-04-17 05:03:05 C 14 05 18.24 -10 07 26.5 – o 691
2021-04-17 05:20:08 C 14 05 18.09 -10 06 26.3 – o 691
2021-04-17 05:37:09 C 14 05 17.90 -10 05 25.7 – o 691
2021-04-17 08:57:59 C 14 05 15.06 -09 53 19.9 – V I52
2021-04-17 09:02:24 C 14 05 15.00 -09 53 02.5 – V I52
2021-04-17 09:06:50 C 14 05 14.94 -09 52 46.3 – V I52
2021-04-18 08:25:51 C 14 05 21.27 -08 20 00.1 – V I52
2021-04-18 08:29:11 C 14 05 21.23 -08 19 46.1 – V I52
2021-04-18 08:32:30 C 14 05 21.16 -08 19 32.1 – V I52
2021-04-20 09:38:39 C 14 05 32.59 -04 04 21.3 – V I52
2021-04-20 09:40:04 C 14 05 32.56 -04 04 12.7 – V I52
2021-04-20 09:41:29 C 14 05 32.54 -04 04 04.0 – V I52
2021-04-20 09:42:55 C 14 05 32.49 -04 03 54.8 – V I52
2021-04-20 22:43:26 C 14 05 40.28 -02 38 28.8 – V 033
2021-04-20 22:45:46 C 14 05 40.23 -02 38 12.9 – V 033
2021-04-20 22:48:05 C 14 05 40.23 -02 37 57.0 – V 033
2021-04-20 22:50:28 C 14 05 40.19 -02 37 40.3 – V 033
2021-04-23 08:01:34 C 14 06 02.71 +06 03 52.0 – V 291
2021-04-23 08:07:17 C 14 06 02.56 +06 04 59.5 – V 291
2021-04-23 08:13:03 C 14 06 02.43 +06 06 07.7 – V 291
2021-04-25 20:01:39 C 14 07 00.54 +22 29 15.6 – V 033
2021-04-25 20:02:28 C 14 07 00.56 +22 29 34.0 – V 033
2021-04-25 20:03:17 C 14 07 00.54 +22 29 53.0 – V 033
2021-04-25 20:07:01 C 14 07 00.51 +22 31 16.7 – V 033
2021-04-25 20:07:50 C 14 07 00.50 +22 31 34.9 – V 033
2021-04-25 20:08:41 C 14 07 00.51 +22 31 53.6 – V 033
2021-04-25 20:09:36 C 14 07 00.52 +22 32 14.1 – V 033
2021-04-26 20:36:26 C 14 07 39.72 +32 50 51.0 – V 033
2021-04-26 20:37:07 C 14 07 39.73 +32 51 10.1 – V 033
2021-04-26 20:37:46 C 14 07 39.73 +32 51 28.9 – V 033
2021-04-26 20:38:26 C 14 07 39.70 +32 51 48.1 – V 033
2021-04-26 20:39:09 C 14 07 39.70 +32 52 08.8 – V 033
2021-04-27 19:53:16 C 14 08 43.66 +45 00 11.9 – V 033
2021-04-27 19:53:50 C 14 08 43.67 +45 00 31.7 – V 033
2021-04-27 19:54:25 C 14 08 43.67 +45 00 51.7 – V 033
2021-04-27 19:54:59 C 14 08 43.69 +45 01 11.2 – V 033
2021-04-28 20:23:54 C 14 10 47.03 +59 40 54.1 – V 033
2021-04-28 20:24:29 C 14 10 47.07 +59 41 16.1 – V 033
2021-04-28 20:25:03 C 14 10 47.11 +59 41 37.7 – V 033
2021-04-28 20:25:38 C 14 10 47.11 +59 41 58.7 – V 033
2021-04-28 20:26:13 C 14 10 47.17 +59 42 21.1 – V 033
2021-04-29 20:28:38 C 14 16 14.72 +74 23 48.7 – V 033
2021-04-29 20:29:12 C 14 16 14.93 +74 24 09.4 – V 033