2021 RS4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4535365086 ± 9.13e-04
Semi-major axis (a)1.4064992968 AU ± 1.64e-03
Inclination (i)3.44417989° ± 8.60e-03
Long. of Asc. Node (Ω)331.21396305° ± 5.43e-03
Arg. of Perihelion (ω)110.20830158° ± 5.32e-04
Mean Anomaly (M)141.49937182° ± 1.49e+00
Mean Motion (n)0.5908850433°/day ± 1.03e-03
Perihelion dist (q)0.76860052 AU ± 1.57e-03
Aphelion dist (Q)2.04439808 AU ± 2.70e-03
Orbital Period1.66805082 yr ± 2.91e-03
Physical Parameters
H (abs. magnitude)25.08
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.196″
Uncertainty4
Orbit TypeApollo
MOID0.003761 AU
Observations Used19
Oppositions1
Arc Total2021-2021
First Observation Used2021-08-30
Last Observation Used2021-09-26
Observations (19)
Date Type RA Dec Mag Band Observatory
2021-08-30 09:11:34 C 22 51 38.848 -05 01 31.49 V F51
2021-08-30 09:28:42 C 22 51 37.210 -05 01 28.79 V F51
2021-08-30 09:45:49 C 22 51 35.539 -05 01 26.13 V F51
2021-08-30 12:56:52 C 22 51 16.712 -05 00 55.35 V F51
2021-09-08 08:45:19 C 22 25 51.789 -04 19 28.60 U F51
2021-09-08 09:01:57 C 22 25 48.979 -04 19 24.49 U F51
2021-09-08 09:18:34 C 22 25 46.145 -04 19 20.31 U F51
2021-09-08 09:41:08 C 22 25 42.301 -04 19 14.56 U F51
2021-09-09 07:43:22 C 22 22 07.59 -04 13 36.6 o 691
2021-09-09 08:00:42 C 22 22 04.55 -04 13 31.9 o 691
2021-09-09 08:18:00 C 22 22 01.48 -04 13 26.9 o 691
2021-09-09 09:18:30 C 22 21 52.696 -04 13 02.35 U F51
2021-09-09 09:44:02 C 22 21 48.091 -04 12 55.51 U F51
2021-09-09 21:23:21 C 22 19 49.91 -04 10 01.8 V 033
2021-09-09 21:28:31 C 22 19 48.96 -04 10 00.0 V 033
2021-09-09 21:33:40 C 22 19 48.01 -04 09 58.8 V 033
2021-09-09 21:38:55 C 22 19 47.03 -04 09 57.3 V 033
2021-09-26 01:52:32 C 20 19 29.62 -00 05 06.5 u H21
2021-09-26 01:57:59 C 20 19 26.69 -00 04 59.6 u H21