2020 HP4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2972903413 ± 2.00e+00
Semi-major axis (a)1.3787777274 AU ± 3.00e+00
Inclination (i)29.97391171° ± 4.00e+00
Long. of Asc. Node (Ω)33.34866942° ± 5.00e+00
Arg. of Perihelion (ω)219.28061566° ± 6.00e+00
Mean Anomaly (M)139.33581448° ± 6.73e-01
Mean Motion (n)0.6087778400°/day ± 1.99e+00
Perihelion dist (q)0.96888060 AU ± 3.47e+00
Aphelion dist (Q)1.78869120 AU ± 4.77e+00
Orbital Period1.61899400 yr ± 5.28e+00
Physical Parameters
H (abs. magnitude)26.60
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.525″
Uncertainty3
Orbit TypeApollo
MOID0.015003 AU
Observations Used81
Oppositions1
Arc Total2020-2020
First Observation Used
Last Observation Used2020-04-23
Observations (81)
Date Type RA Dec Mag Band Observatory
2020-04-22 21:55:02 C 14 23 19.36 +00 06 18.4 S C43
2020-04-22 22:06:27 C 14 22 59.75 -00 04 35.8 V K63
2020-04-22 22:15:20 C 14 22 44.82 -00 14 18.3 V Z80
2020-04-22 22:18:47 C 14 22 38.49 -00 17 50.2 V J95
2020-04-22 22:26:04 C 14 22 23.98 -00 25 17.8 V Z80
2020-04-22 22:27:37 C 14 22 18.79 -00 26 21.5 V 204
2020-04-22 22:28:22 C 14 22 19.86 -00 27 38.8 V J95
2020-04-22 22:30:37 C 14 22 15.47 -00 29 57.0 V J95
2020-04-22 22:34:07 C 14 22 08.67 -00 33 32.8 V J95
2020-04-22 22:34:08 C 14 22 05.97 -00 33 03.1 V 204
2020-04-22 22:36:24 C 14 22 04.19 -00 35 53.3 V J95
2020-04-22 22:40:36 C 14 21 53.21 -00 39 42.4 V 204
2020-04-22 23:08:59 C 14 20 54.82 -01 09 04.5 V L01
2020-04-22 23:09:52 C 14 20 53.06 -01 09 59.3 V L01
2020-04-22 23:10:44 C 14 20 51.35 -01 10 53.5 V L01
2020-04-22 23:11:36 C 14 20 49.59 -01 11 48.2 V L01
2020-04-22 23:12:29 C 14 20 47.85 -01 12 42.6 V L01
2020-04-23 00:02:51 C 14 19 11.20 -02 06 32.0 V Z99
2020-04-23 00:04:52 C 14 19 07.09 -02 08 40.7 V Z99
2020-04-23 00:06:58 C 14 19 02.82 -02 10 55.3 V Z99
2020-04-23 04:02:45 C 14 11 23.96 -06 30 59.9 V I52
2020-04-23 04:02:56 C 14 11 23.50 -06 31 13.3 V I52
2020-04-23 04:03:07 C 14 11 23.10 -06 31 26.4 V I52
2020-04-23 04:03:19 C 14 11 22.71 -06 31 39.4 V I52
2020-04-23 06:19:12 C 14 06 05.94 -09 13 23.2 V 858
2020-04-23 06:34:56 C 14 05 28.10 -09 32 28.8 V 858
2020-04-23 06:43:50 C 14 05 06.55 -09 43 20.0 V 858
2020-04-23 09:28:56 C 13 58 51.14 -12 57 26.9 V R57
2020-04-23 09:30:35 C 13 58 46.91 -12 59 33.5 V R57
2020-04-23 09:32:15 C 13 58 42.70 -13 01 39.7 V R57
2020-04-23 09:33:54 C 13 58 38.49 -13 03 47.6 V R57