2021 AU4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4195585000
Semi-major axis (a)1.4357350000 AU
Inclination (i)13.61876000°
Long. of Asc. Node (Ω)117.77796000°
Arg. of Perihelion (ω)78.02753000°
Mean Anomaly (M)256.81721000°
Mean Motion (n)0.5729182100°/day
Perihelion dist (q)0.83336020 AU
Aphelion dist (Q)2.03810980 AU
Orbital Period1.72032870 yr
Physical Parameters
H (abs. magnitude)24.21
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.720″
Uncertainty9
Orbit TypeApollo
MOID0.054888 AU
Observations Used23
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-01-16
Observations (23)
Date Type RA Dec Mag Band Observatory
2021-01-10 07:38:37 C 07 17 14.98 +09 07 07.7 V G96
2021-01-10 07:45:58 C 07 17 14.33 +09 07 24.5 V G96
2021-01-10 07:53:19 C 07 17 13.66 +09 07 41.0 V G96
2021-01-10 09:17:49 C 07 17 06.04 +09 10 49.8 V I52
2021-01-10 09:20:14 C 07 17 05.83 +09 10 55.0 V I52
2021-01-10 09:22:39 C 07 17 05.58 +09 11 00.4 V I52
2021-01-10 09:25:05 C 07 17 05.42 +09 11 04.9 V I52
2021-01-10 23:50:00 C 07 15 57.02 +09 44 14.2 V 033
2021-01-10 23:55:10 C 07 15 56.51 +09 44 26.4 V 033
2021-01-11 00:00:19 C 07 15 56.08 +09 44 38.3 V 033
2021-01-11 05:34:53 C 07 15 29.98 +09 58 19.0 V V06
2021-01-11 05:38:04 C 07 15 29.67 +09 58 26.6 V V06
2021-01-11 05:41:17 C 07 15 29.37 +09 58 34.6 V V06
2021-01-11 19:35:40 C 07 14 17.98 +10 33 12.0 V L01
2021-01-11 19:40:03 C 07 14 17.59 +10 33 23.0 V L01
2021-01-11 19:44:44 C 07 14 17.11 +10 33 35.5 V L01
2021-01-13 03:51:03 C 07 11 15.91 +12 01 54.7 V I52
2021-01-13 03:53:28 C 07 11 15.66 +12 02 01.8 V I52
2021-01-13 03:55:54 C 07 11 15.37 +12 02 09.3 V I52
2021-01-16 04:50:54 C 07 02 46.60 +16 09 58.9 V I52
2021-01-16 04:52:00 C 07 02 46.44 +16 10 03.3 V I52
2021-01-16 04:53:07 C 07 02 46.29 +16 10 07.8 V I52
2021-01-16 04:54:13 C 07 02 46.12 +16 10 12.1 V I52