2021 HC3

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6754944000 ± 2.54e-07
Semi-major axis (a)1.1215307361 AU ± 6.13e-08
Inclination (i)28.39799929° ± 3.30e-05
Long. of Asc. Node (Ω)219.53550930° ± 4.19e-06
Arg. of Perihelion (ω)132.14669527° ± 2.82e-05
Mean Anomaly (M)253.66722558° ± 1.19e-04
Mean Motion (n)0.8298421803°/day ± 6.81e-08
Perihelion dist (q)0.36394300 AU ± 2.86e-07
Aphelion dist (Q)1.87911847 AU ± 3.03e-07
Orbital Period1.18772739 yr ± 9.74e-08
Physical Parameters
H (abs. magnitude)21.57
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.340″
Uncertainty0
Orbit TypeApollo
MOID0.047159 AU
Observations Used142
Oppositions1
Arc Total2018-2022
First Observation Used2018-02-18
Last Observation Used2022-05-24
Observations (146)
Date Type RA Dec Mag Band Observatory
2018-02-18 03:26:09 C 05 17 27.326 -38 06 43.97 V W84
2018-02-22 01:11:57 C 05 28 33.438 -35 05 28.81 V W84
2021-04-30 11:43:53 C 15 50 51.96 -07 08 31.5 V T05
2021-04-30 12:28:12 C 15 50 46.88 -06 56 31.5 V T05
2021-04-30 12:39:26 C 15 50 45.59 -06 53 27.9 V T05
2021-05-01 05:11:28 C 15 49 19.41 -01 53 09.0 V I52
2021-05-01 05:11:50 C 15 49 19.35 -01 53 01.4 V I52
2021-05-01 05:12:11 C 15 49 19.31 -01 52 54.2 V I52
2021-05-01 05:12:33 C 15 49 19.26 -01 52 47.2 V I52
2021-05-01 07:24:34 C 15 49 00.04 -01 07 59.5 q H36
2021-05-01 07:26:15 C 15 48 59.81 -01 07 24.7 q H36
2021-05-01 07:28:22 C 15 48 59.52 -01 06 40.5 q H36
2021-05-01 07:29:38 C 15 48 59.35 -01 06 14.2 q H36
2021-05-01 07:30:29 C 15 48 59.24 -01 05 56.6 q H36
2021-05-01 09:16:24 C 15 48 46.23 -00 28 41.3 V 703
2021-05-01 09:23:59 C 15 48 45.13 -00 26 01.4 V 703
2021-05-01 09:31:34 C 15 48 44.04 -00 23 18.7 V 703
2021-05-01 09:39:09 C 15 48 43.05 -00 20 38.8 V 703
2021-05-01 15:03:55 C 15 48 07.63 +01 41 24.7 q E23
2021-05-01 15:13:54 C 15 48 06.12 +01 45 13.4 q E23
2021-05-01 15:23:55 C 15 48 04.59 +01 49 03.5 q E23
2021-05-01 21:10:21 C 15 47 27.54 +04 03 51.1 V 958
2021-05-01 21:12:29 C 15 47 27.22 +04 04 44.6 V 958
2021-05-01 21:51:46 C 15 47 21.40 +04 21 01.6 V 958
2021-05-01 21:59:53 C 15 47 20.17 +04 24 24.1 V 958
2021-05-01 22:22:44 C 15 47 16.54 +04 33 55.6 V I93
2021-05-01 22:25:02 C 15 47 16.18 +04 34 53.1 V I93
2021-05-01 22:27:12 C 15 47 15.38 +04 35 35.5 V Z80
2021-05-01 22:27:20 C 15 47 15.84 +04 35 50.8 V I93
2021-05-01 22:32:12 C 15 47 14.55 +04 37 41.8 V Z80
2021-05-01 22:37:12 C 15 47 13.81 +04 39 47.3 V Z80
2021-05-01 23:57:23 C 15 47 01.20 +05 13 44.5 V Z80
2021-05-02 00:00:58 C 15 47 00.63 +05 15 16.4 V Z80
2021-05-02 00:04:38 C 15 47 00.07 +05 16 50.3 V Z80
2021-05-02 00:05:45 C 15 47 05.97 +05 19 56.9 X Y00
2021-05-02 00:06:40 C 15 47 05.80 +05 20 19.5 X Y00
2021-05-02 00:07:34 C 15 47 05.68 +05 20 43.2 X Y00
2021-05-02 00:08:28 C 15 46 59.47 +05 18 28.7 V Z80
2021-05-02 00:08:55 C 15 47 05.48 +05 21 18.4 X Y00
2021-05-02 00:19:21 C 15 46 57.77 +05 23 08.8 V J95
2021-05-02 00:20:46 C 15 46 57.54 +05 23 45.2 V J95
2021-05-02 00:22:09 C 15 46 57.33 +05 24 20.8 V J95
2021-05-02 00:26:44 C 15 46 56.58 +05 26 18.4 V J95
2021-05-02 03:26:06 C 15 46 36.03 +06 45 17.2 X W34
2021-05-02 03:32:36 C 15 46 34.98 +06 48 11.7 X W34
2021-05-02 03:38:32 C 15 46 33.96 +06 50 51.4 X W34
2021-05-02 03:42:08 C 15 46 33.36 +06 52 27.3 X W34
2021-05-02 03:44:10 C 15 46 33.02 +06 53 22.6 X W34
2021-05-02 03:46:10 C 15 46 32.68 +06 54 16.3 X W34
2021-05-02 04:51:58 C 15 46 21.75 +07 23 48.1 u H21