2021 HC

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4466466490
Semi-major axis (a)1.7866305989 AU
Inclination (i)10.75764634°
Long. of Asc. Node (Ω)29.51834447°
Arg. of Perihelion (ω)143.91026990°
Mean Anomaly (M)344.36314832°
Mean Motion (n)0.4127107700°/day
Perihelion dist (q)0.98863830 AU
Aphelion dist (Q)2.58465650 AU
Orbital Period2.38813170 yr
Physical Parameters
H (abs. magnitude)26.07
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.444″
Uncertainty
Orbit TypeApollo
MOID0.034625 AU
Observations Used41
Oppositions1
Arc Total2021-2021
First Observation Used
Last Observation Used2021-04-21
Observations (41)
Date Type RA Dec Mag Band Observatory
2021-04-11 06:25:43 C 12 16 29.82 +52 57 13.8 V G96
2021-04-11 06:33:18 C 12 16 33.84 +52 55 18.8 V G96
2021-04-11 06:48:29 C 12 16 41.72 +52 51 27.3 V G96
2021-04-16 04:41:51 C 13 07 22.41 +15 51 06.3 V U68
2021-04-16 04:47:26 C 13 07 23.81 +15 49 19.1 V U68
2021-04-16 05:26:00 C 13 07 33.51 +15 36 47.3 V U68
2021-04-16 05:31:34 C 13 07 34.83 +15 35 00.4 V U68
2021-04-16 21:22:44 C 13 12 03.29 +10 30 16.1 V J95
2021-04-16 21:26:37 C 13 12 04.23 +10 29 03.6 V J95
2021-04-16 21:30:32 C 13 12 05.12 +10 27 49.9 V J95
2021-04-16 21:37:58 C 13 12 06.89 +10 25 32.2 V J95
2021-04-16 22:15:15 C 13 12 13.93 +10 14 21.8 V K63
2021-04-16 22:22:04 C 13 12 15.47 +10 12 13.9 V K63
2021-04-16 22:26:40 C 13 12 16.11 +10 10 26.1 V 033
2021-04-16 22:27:34 C 13 12 16.33 +10 10 09.0 V 033
2021-04-16 22:28:30 C 13 12 16.52 +10 09 51.9 V 033
2021-04-16 22:28:59 C 13 12 16.94 +10 10 04.5 V K63
2021-04-16 22:43:55 C 13 12 21.87 +10 04 56.8 V Z99
2021-04-16 22:49:48 C 13 12 23.19 +10 03 07.1 V Z99
2021-04-16 22:55:41 C 13 12 24.56 +10 01 18.1 V Z99
2021-04-16 23:35:37 C 13 12 31.20 +09 49 18.7 V L01
2021-04-16 23:37:19 C 13 12 31.60 +09 48 46.8 V L01
2021-04-16 23:39:02 C 13 12 31.97 +09 48 14.5 V L01
2021-04-16 23:42:54 C 13 12 32.83 +09 47 02.8 V L01
2021-04-19 11:45:02 C 13 26 31.04 -06 30 16.6 V 474
2021-04-19 11:47:12 C 13 26 31.42 -06 30 46.5 V 474
2021-04-19 11:47:55 C 13 26 31.53 -06 30 56.9 V 474
2021-04-19 11:50:06 C 13 26 31.88 -06 31 26.9 V 474
2021-04-20 08:28:58 C 13 30 22.92 -11 06 38.6 V I52
2021-04-20 08:29:47 C 13 30 23.03 -11 06 48.5 V I52
2021-04-20 08:30:36 C 13 30 23.15 -11 06 58.4 V I52
2021-04-20 23:28:38 C 13 33 03.90 -14 03 56.1 V 033
2021-04-20 23:30:08 C 13 33 04.10 -14 04 12.8 V 033
2021-04-20 23:31:37 C 13 33 04.32 -14 04 29.5 V 033
2021-04-21 06:18:30 C 13 34 15.69 -15 18 37.6 V G96
2021-04-21 06:25:55 C 13 34 16.59 -15 19 57.5 V G96
2021-04-21 06:30:46 C 13 34 17.23 -15 20 49.5 V I52
2021-04-21 06:31:36 C 13 34 17.27 -15 20 58.1 V I52
2021-04-21 06:32:25 C 13 34 17.41 -15 21 07.2 V I52
2021-04-21 06:33:20 C 13 34 17.54 -15 21 17.6 V G96
2021-04-21 06:40:44 C 13 34 18.41 -15 22 36.8 V G96