2021 HH

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5356440371 ± 3.46e-04
Semi-major axis (a)1.4432241959 AU ± 7.99e-04
Inclination (i)9.12105813° ± 6.29e-03
Long. of Asc. Node (Ω)206.01488920° ± 5.87e-04
Arg. of Perihelion (ω)100.69511255° ± 2.46e-03
Mean Anomaly (M)196.73721663° ± 7.52e-01
Mean Motion (n)0.5684752669°/day ± 4.72e-04
Perihelion dist (q)0.67016976 AU ± 6.22e-04
Aphelion dist (Q)2.21627863 AU ± 1.33e-03
Orbital Period1.73380680 yr ± 1.44e-03
Physical Parameters
H (abs. magnitude)25.09
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.241″
Uncertainty3
Orbit TypeApollo
MOID0.018586 AU
Observations Used52
Oppositions1
Arc Total2021-2021
First Observation Used2021-04-16
Last Observation Used2021-04-29
Observations (52)
Date Type RA Dec Mag Band Observatory
2021-04-29 20:30:21 C 14 16 15.23 +74 24 50.5 V 033
2021-04-29 20:30:56 C 14 16 15.44 +74 25 11.1 V 033