2021 RR4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3506176000
Semi-major axis (a)1.5749707000 AU
Inclination (i)5.83230000°
Long. of Asc. Node (Ω)170.71566000°
Arg. of Perihelion (ω)203.64562000°
Mean Anomaly (M)31.47874000°
Mean Motion (n)0.4986494500°/day
Perihelion dist (q)1.02275830 AU
Aphelion dist (Q)2.12718310 AU
Orbital Period1.97655420 yr
Physical Parameters
H (abs. magnitude)26.92
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.640″
Uncertainty7
Orbit TypeAmor
MOID0.030656 AU
Observations Used30
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-09-16
Observations (31)
Date Type RA Dec Mag Band Observatory
2021-08-30 06:43:30 C 21 38 16.567 +07 58 19.23 V F51
2021-08-30 07:02:20 C 21 38 19.471 +07 58 10.10 V F51
2021-08-30 07:20:59 C 21 38 22.307 +07 58 00.93 V F51
2021-09-09 05:36:18 C 22 50 39.60 +03 22 21.9 V G96
2021-09-09 05:44:30 C 22 50 43.20 +03 22 05.6 V G96
2021-09-09 05:52:44 C 22 50 46.84 +03 21 48.1 V G96
2021-09-09 06:00:57 C 22 50 50.51 +03 21 31.2 V G96
2021-09-09 08:15:25 C 22 51 58.575 +03 17 24.63 U F51
2021-09-09 08:17:22 C 22 51 50.89 +03 16 46.5 V G96
2021-09-09 08:19:35 C 22 51 51.88 +03 16 41.7 V G96
2021-09-09 08:20:21 C 22 51 52.21 +03 16 40.2 V G96
2021-09-09 08:32:06 C 22 52 06.015 +03 16 49.88 U F51
2021-09-09 08:48:43 C 22 52 13.371 +03 16 15.31 U F51
2021-09-09 09:05:28 C 22 52 20.792 +03 15 40.38 U F51
2021-09-09 20:01:14 C 22 57 53.78 +02 50 48.4 V K51
2021-09-09 20:05:09 C 22 57 55.64 +02 50 39.9 V K51
2021-09-09 20:10:24 C 22 57 58.20 +02 50 28.0 V K51
2021-09-09 22:14:53 C 22 58 58.09 +02 45 53.4 X L01
2021-09-09 22:16:21 C 22 58 58.80 +02 45 49.7 X L01
2021-09-09 22:17:51 C 22 58 59.47 +02 45 46.5 X L01
2021-09-09 22:21:35 C 22 59 01.26 +02 45 38.3 X L01
2021-09-09 22:40:08 C 22 59 10.47 +02 44 42.8 V 033
2021-09-09 22:41:52 C 22 59 11.32 +02 44 38.8 V 033
2021-09-09 22:43:38 C 22 59 12.17 +02 44 35.0 V 033
2021-09-09 22:46:31 C 22 59 13.59 +02 44 28.4 V 033
2021-09-12 21:48:54 C 23 42 09.18 -00 24 26.5 V 033
2021-09-12 21:49:58 C 23 42 09.90 -00 24 30.1 V 033
2021-09-12 21:52:29 C 23 42 11.51 -00 24 37.6 V 033
2021-09-16 04:44:24 C 00 43 46.08 -04 48 51.3 u 807
2021-09-16 04:50:00 C 00 43 50.55 -04 49 11.5 u 807
2021-09-16 04:55:43 C 00 43 55.13 -04 49 31.5 u 807