2021 HD3

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3901425000
Semi-major axis (a)1.6430911000 AU
Inclination (i)9.36031000°
Long. of Asc. Node (Ω)55.13505000°
Arg. of Perihelion (ω)209.81057000°
Mean Anomaly (M)38.70580000°
Mean Motion (n)0.4679631000°/day
Perihelion dist (q)1.00205140 AU
Aphelion dist (Q)2.28413080 AU
Orbital Period2.10616540 yr
Physical Parameters
H (abs. magnitude)24.47
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.860″
Uncertainty6
Orbit TypeAmor
MOID0.021423 AU
Observations Used55
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-05-23
Observations (58)
Date Type RA Dec Mag Band Observatory
2021-05-19 04:43:01 C 12 18 43.91 -07 24 42.0 V I52
2021-05-20 19:58:21 C 12 01 24.98 -15 11 41.8 V 595
2021-05-20 20:10:05 C 12 01 18.49 -15 14 17.2 V 595
2021-05-20 20:25:47 C 12 01 09.82 -15 17 45.1 V 595
2021-05-23 00:56:43 C 11 28 22.29 -28 19 39.6 u 807
2021-05-23 01:03:31 C 11 28 16.59 -28 21 30.5 u 807
2021-05-23 01:10:18 C 11 28 10.85 -28 23 21.0 u 807
2021-05-23 01:17:01 C 11 28 05.19 -28 25 10.5 u 807