2021 RP4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5029174384 ± 1.94e-04
Semi-major axis (a)1.9795173975 AU ± 7.93e-04
Inclination (i)4.76164781° ± 1.65e-03
Long. of Asc. Node (Ω)202.71876112° ± 3.20e-03
Arg. of Perihelion (ω)93.42420305° ± 3.03e-03
Mean Anomaly (M)198.09967122° ± 3.34e-01
Mean Motion (n)0.3538940750°/day ± 2.13e-04
Perihelion dist (q)0.98398358 AU ± 5.50e-04
Aphelion dist (Q)2.97505122 AU ± 1.25e-03
Orbital Period2.78508840 yr ± 1.67e-03
Physical Parameters
H (abs. magnitude)23.10
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.242″
Uncertainty3
Orbit TypeApollo
MOID0.072677 AU
Observations Used59
Oppositions1
Arc Total2021-2021
First Observation Used2021-09-06
Last Observation Used2021-10-07
Observations (63)
Date Type RA Dec Mag Band Observatory
2021-09-13 22:09:37 C 22 18 13.94 +12 05 24.2 V K88
2021-09-13 22:12:29 C 22 18 14.57 +12 05 18.3 V K88
2021-09-23 09:03:09 C 22 55 04.993 +06 04 13.31 U F51
2021-09-23 09:21:20 C 22 55 06.965 +06 03 51.33 U F51
2021-09-23 09:57:40 C 22 55 10.899 +06 03 07.91 U F51
2021-09-29 14:25:06 C 23 10 27.49 +03 33 06.1 V D29
2021-09-29 15:05:50 C 23 10 30.77 +03 32 31.8 V D29
2021-09-30 07:02:34 C 23 11 55.538 +03 19 29.48 U F51
2021-09-30 07:20:18 C 23 11 56.908 +03 19 15.23 U F51
2021-09-30 07:38:00 C 23 11 58.268 +03 19 00.92 U F51
2021-10-07 06:24:25 C 23 24 35.92 +01 28 43.4 o 691
2021-10-07 06:50:58 C 23 24 37.53 +01 28 29.5 o 691
2021-10-07 07:17:23 C 23 24 39.17 +01 28 15.1 o 691