2021 HC1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3131753000
Semi-major axis (a)1.1563510000 AU
Inclination (i)5.54461000°
Long. of Asc. Node (Ω)24.92172000°
Arg. of Perihelion (ω)97.34907000°
Mean Anomaly (M)301.05465000°
Mean Motion (n)0.7926283100°/day
Perihelion dist (q)0.79421040 AU
Aphelion dist (Q)1.51849160 AU
Orbital Period1.24346770 yr
Physical Parameters
H (abs. magnitude)27.97
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.870″
Uncertainty6
Orbit TypeApollo
MOID0.000236 AU
Observations Used11
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-04-18
Observations (12)
Date Type RA Dec Mag Band Observatory
2021-04-16 09:03:21 C 12 16 06.045 -23 36 47.19 U F51
2021-04-16 09:20:44 C 12 16 32.152 -23 39 51.54 U F51
2021-04-16 09:38:07 C 12 16 57.800 -23 42 49.07 U F51
2021-04-17 10:00:16 C 12 42 28.92 -25 54 30.1 V T05
2021-04-17 10:04:53 C 12 42 30.68 -25 54 41.1 V T05
2021-04-17 10:14:09 C 12 42 34.04 -25 55 05.8 V T05
2021-04-17 11:01:44 C 12 42 51.64 -25 56 55.2 V T05
2021-04-18 05:06:01 C 12 50 48.59 -26 25 20.4 u 807
2021-04-18 05:10:39 C 12 50 49.44 -26 25 26.0 u 807
2021-04-18 05:15:17 C 12 50 50.30 -26 25 31.6 u 807
2021-04-18 08:01:23 C 12 52 09.40 -26 36 24.9 V T08
2021-04-18 08:06:01 C 12 52 10.05 -26 36 32.8 V T08