2021 HY9

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5214603000
Semi-major axis (a)2.0880417000 AU
Inclination (i)11.40747000°
Long. of Asc. Node (Ω)31.67733000°
Arg. of Perihelion (ω)196.99218000°
Mean Anomaly (M)184.11563000°
Mean Motion (n)0.3266595100°/day
Perihelion dist (q)0.99921080 AU
Aphelion dist (Q)3.17687260 AU
Orbital Period3.01723230 yr
Physical Parameters
H (abs. magnitude)28.10
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.660″
Uncertainty6
Orbit TypeApollo
MOID0.007704 AU
Observations Used17
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-04-22
Observations (9)
Date Type RA Dec Mag Band Observatory
2021-04-18 09:09:00 C 13 27 32.42 +25 16 27.9 V G96
2021-04-20 06:00:47 C 13 57 40.55 +10 13 41.0 V U68
2021-04-20 06:06:22 C 13 57 45.02 +10 10 56.1 V U68
2021-04-20 06:46:09 C 13 58 17.36 +09 50 58.4 V U68
2021-04-20 06:51:44 C 13 58 21.94 +09 48 09.9 V U68
2021-04-21 04:42:51 C 14 23 04.13 -03 58 32.7 V U68
2021-04-21 04:48:26 C 14 23 11.18 -04 02 48.2 V U68
2021-04-21 07:17:09 C 14 26 20.39 -05 59 03.1 V U68
2021-04-21 07:22:43 C 14 26 27.49 -06 03 29.8 V U68