2021 RP9

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6457158000
Semi-major axis (a)2.3398424000 AU
Inclination (i)17.58794000°
Long. of Asc. Node (Ω)177.13571000°
Arg. of Perihelion (ω)241.72391000°
Mean Anomaly (M)47.55653000°
Mean Motion (n)0.2753747800°/day
Perihelion dist (q)0.82896920 AU
Aphelion dist (Q)3.85071560 AU
Orbital Period3.57915010 yr
Physical Parameters
H (abs. magnitude)24.47
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.780″
Uncertainty8
Orbit TypeApollo
MOID0.022710 AU
Observations Used27
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-09-18
Observations (28)
Date Type RA Dec Mag Band Observatory
2021-09-06 08:32:57 C 23 25 59.64 +23 57 18.3 V G96
2021-09-06 08:53:52 C 23 26 02.86 +23 57 13.2 V G96
2021-09-06 09:02:07 C 23 26 04.10 +23 57 10.2 V G96
2021-09-11 08:09:27 C 23 54 00.480 +22 52 14.46 U F51
2021-09-11 08:28:37 C 23 54 06.495 +22 51 56.30 U F51
2021-09-11 08:44:46 C 23 54 11.597 +22 51 40.97 U F51
2021-09-11 13:34:02 C 23 55 43.583 +22 46 33.62 V F51
2021-09-11 13:34:57 C 23 55 43.888 +22 46 32.56 V F51
2021-09-11 19:58:21 C 23 58 05.77 +22 38 36.6 V 033
2021-09-11 20:01:31 C 23 58 06.86 +22 38 33.4 V 033
2021-09-11 20:04:40 C 23 58 07.94 +22 38 29.9 V 033
2021-09-11 22:37:19 C 23 59 01.77 +22 35 43.7 X L01
2021-09-11 22:41:49 C 23 59 03.32 +22 35 38.0 X L01
2021-09-11 22:46:18 C 23 59 04.89 +22 35 32.4 X L01
2021-09-12 00:50:57 C 23 59 49.96 +22 33 01.6 V I93
2021-09-12 00:58:11 C 23 59 52.57 +22 32 51.7 V I93
2021-09-12 01:05:39 C 23 59 55.20 +22 32 43.1 V I93
2021-09-15 18:15:37 C 00 48 32.99 +19 11 34.0 V D29
2021-09-15 18:35:59 C 00 48 48.17 +19 10 14.1 V D29
2021-09-15 18:56:20 C 00 49 03.62 +19 08 55.3 V D29
2021-09-16 07:50:48 C 00 59 55.58 +18 14 32.0 V G96
2021-09-16 07:58:19 C 01 00 02.02 +18 13 58.2 V G96
2021-09-16 08:05:49 C 01 00 08.45 +18 13 23.3 V G96
2021-09-16 08:13:21 C 01 00 14.88 +18 12 48.9 V G96
2021-09-18 07:16:13 C 01 53 10.33 +13 02 44.8 V G96
2021-09-18 07:23:54 C 01 53 20.81 +13 01 35.8 V G96
2021-09-18 07:31:35 C 01 53 31.23 +13 00 27.6 V G96
2021-09-18 07:39:15 C 01 53 41.62 +12 59 18.7 V G96