2009 HA21

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7290759947 ± 1.38e-07
Semi-major axis (a)1.4606978645 AU ± 1.65e-08
Inclination (i)6.40564494° ± 1.78e-05
Long. of Asc. Node (Ω)205.39161033° ± 3.38e-05
Arg. of Perihelion (ω)219.92203008° ± 4.87e-05
Mean Anomaly (M)202.98561791° ± 1.24e-05
Mean Motion (n)0.5583052152°/day ± 9.49e-09
Perihelion dist (q)0.39573812 AU ± 2.02e-07
Aphelion dist (Q)2.52565761 AU ± 2.04e-07
Orbital Period1.76538971 yr ± 3.00e-08
Physical Parameters
H (abs. magnitude)20.85
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.281″
Uncertainty0
Orbit TypeApollo
MOID0.046179 AU
Observations Used90
Oppositions6
Arc Total2009-2023
First Observation Used2009-04-20
Last Observation Used2023-04-16
Observations (101)
Date Type RA Dec Mag Band Observatory
2023-04-16 03:57:00 C 08 45 29.293 +11 40 03.76 V G96