2021 AJ4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3342758988 ± 1.85e-04
Semi-major axis (a)1.2791964002 AU ± 6.53e-04
Inclination (i)32.02297034° ± 2.42e-02
Long. of Asc. Node (Ω)107.01214861° ± 9.18e-03
Arg. of Perihelion (ω)234.43845314° ± 5.17e-02
Mean Anomaly (M)207.48474143° ± 1.02e+00
Mean Motion (n)0.6812498714°/day ± 5.22e-04
Perihelion dist (q)0.85159187 AU ± 4.95e-04
Aphelion dist (Q)1.70680093 AU ± 9.03e-04
Orbital Period1.44679115 yr ± 1.11e-03
Physical Parameters
H (abs. magnitude)21.66
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.213″
Uncertainty4
Orbit TypeApollo
MOID0.061523 AU
Observations Used21
Oppositions1
Arc Total2021-2021
First Observation Used2021-01-08
Last Observation Used2021-01-16
Observations (23)
Date Type RA Dec Mag Band Observatory
2021-01-08 09:04:05 C 04 51 01.343 +03 55 58.61 U F51
2021-01-08 09:36:15 C 04 50 59.465 +03 57 44.03 U F51
2021-01-09 03:41:16 C 04 50 03.76 +04 56 41.5 V 807
2021-01-09 03:46:59 C 04 50 03.44 +04 56 59.5 V 807
2021-01-09 03:52:40 C 04 50 03.13 +04 57 18.1 V 807
2021-01-09 09:58:24 C 04 49 44.906 +05 16 28.31 V 568
2021-01-09 09:59:49 C 04 49 44.829 +05 16 32.81 V 568
2021-01-10 03:06:57 C 04 48 57.31 +06 10 19.3 V V06
2021-01-10 03:10:48 C 04 48 57.13 +06 10 30.9 V V06
2021-01-10 03:18:29 C 04 48 56.78 +06 10 54.4 V V06
2021-01-11 02:39:04 C 04 47 54.41 +07 22 41.9 u 807
2021-01-11 02:50:20 C 04 47 53.88 +07 23 16.0 u 807
2021-01-11 03:01:35 C 04 47 53.34 +07 23 49.9 u 807
2021-01-11 03:16:42 C 04 47 53.48 +07 24 15.1 V V06
2021-01-11 03:20:32 C 04 47 53.25 +07 24 25.5 V V06
2021-01-11 03:24:22 C 04 47 53.07 +07 24 37.2 V V06
2021-01-11 03:28:13 C 04 47 52.92 +07 24 48.3 V V06
2021-01-12 03:41:55 C 04 46 54.53 +08 36 30.1 V V06
2021-01-12 03:49:36 C 04 46 54.21 +08 36 52.5 V V06
2021-01-12 03:53:26 C 04 46 54.08 +08 37 03.8 V V06
2021-01-16 02:41:32 C 04 43 58.83 +12 54 54.4 V V06
2021-01-16 02:46:06 C 04 43 58.73 +12 55 05.5 V V06
2021-01-16 02:50:40 C 04 43 58.57 +12 55 17.3 V V06