2021 AR4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4869375208 ± 3.70e-05
Semi-major axis (a)2.2820554373 AU ± 1.75e-04
Inclination (i)36.34627163° ± 5.20e-04
Long. of Asc. Node (Ω)244.84351583° ± 4.92e-04
Arg. of Perihelion (ω)170.29961002° ± 1.32e-04
Mean Anomaly (M)154.27145403° ± 5.93e-02
Mean Motion (n)0.2859058163°/day ± 3.29e-05
Perihelion dist (q)1.17083702 AU ± 1.23e-04
Aphelion dist (Q)3.39327385 AU ± 2.74e-04
Orbital Period3.44738102 yr ± 3.97e-04
Physical Parameters
H (abs. magnitude)19.61
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.354″
Uncertainty2
Orbit TypeAmor
MOID0.187522 AU
Observations Used53
Oppositions1
Arc Total2020-2021
First Observation Used2020-11-28
Last Observation Used2021-03-05
Observations (55)
Date Type RA Dec Mag Band Observatory
2021-02-21 01:08:35 C 03 51 28.73 -12 25 56.6 V 807
2021-02-21 01:15:02 C 03 51 29.51 -12 25 57.4 V 807
2021-03-05 00:46:32 C 04 25 50.12 -12 45 26.1 V 807
2021-03-05 00:56:07 C 04 25 51.23 -12 45 25.8 V 807
2021-03-05 01:05:57 C 04 25 52.37 -12 45 26.5 V 807