2020 HD4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5125355314 ± 1.12e-04
Semi-major axis (a)2.2651512930 AU ± 5.23e-04
Inclination (i)5.34144201° ± 8.35e-04
Long. of Asc. Node (Ω)218.24542312° ± 1.83e-04
Arg. of Perihelion (ω)16.99989787° ± 1.41e-04
Mean Anomaly (M)223.72100019° ± 2.04e-01
Mean Motion (n)0.2891122239°/day ± 1.00e-04
Perihelion dist (q)1.10418077 AU ± 3.60e-04
Aphelion dist (Q)3.42612181 AU ± 8.31e-04
Orbital Period3.40914774 yr ± 1.18e-03
Physical Parameters
H (abs. magnitude)24.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.228″
Uncertainty3
Orbit TypeAmor
MOID0.096525 AU
Observations Used54
Oppositions1
Arc Total2020-2020
First Observation Used2020-04-15
Last Observation Used2020-05-19
Observations (59)
Date Type RA Dec Mag Band Observatory
2020-05-14 10:41:50 C 16 21 52.770 -03 31 39.00 U F52
2020-05-14 10:57:57 C 16 21 57.852 -03 31 10.89 U F52
2020-05-15 10:02:21 C 16 29 44.43 -02 51 13.6 V I52
2020-05-15 10:09:21 C 16 29 46.62 -02 51 01.8 V I52
2020-05-15 10:11:10 C 16 29 47.17 -02 50 58.6 V I52
2020-05-19 09:41:33 C 17 00 22.51 -00 16 13.7 V I52
2020-05-19 09:44:18 C 17 00 23.27 -00 16 09.4 V I52
2020-05-19 09:56:11 C 17 00 26.60 -00 15 52.1 V I52
2020-05-19 09:58:56 C 17 00 27.42 -00 15 47.9 V I52