IAA RAS IAA Minor Planet Database

2021 RR9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5636464000
Semi-major axis (a)1.7214225000 AU
Inclination (i)26.74682000°
Long. of Asc. Node (Ω)349.61637000°
Arg. of Perihelion (ω)81.85105000°
Mean Anomaly (M)286.80102000°
Mean Motion (n)0.4363880600°/day
Perihelion dist (q)0.75114890 AU
Aphelion dist (Q)2.69169610 AU
Orbital Period2.25855780 yr
Physical Parameters
H (abs. magnitude)22.23
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date—
RMS Residual0.570″
Uncertainty9
Orbit TypeApollo
MOID0.052646 AU
Observations Used15
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2021-09-11
Observations (18)
Date Type RA Dec Mag Band Observatory
2021-09-08 12:48:11 C 03 51 11.901 +34 04 30.23 – U F52
2021-09-08 13:04:46 C 03 51 21.695 +34 07 20.92 – V F52
2021-09-08 13:21:20 C 03 51 31.800 +34 10 16.41 – U F52
2021-09-08 13:38:01 C 03 51 41.771 +34 13 09.60 – U F52
2021-09-08 22:06:02 C 03 57 05.99 +35 40 32.3 – V L01
2021-09-08 22:08:23 C 03 57 07.47 +35 40 56.9 – V L01
2021-09-08 22:10:44 C 03 57 09.04 +35 41 21.9 – V L01
2021-09-08 22:13:53 C 03 57 11.12 +35 41 54.9 – V L01
2021-09-09 03:19:54 C 04 00 30.00 +36 35 19.7 – V 033
2021-09-09 03:21:04 C 04 00 30.75 +36 35 31.6 – V 033
2021-09-09 03:22:14 C 04 00 31.51 +36 35 43.9 – V 033
2021-09-09 03:23:27 C 04 00 32.30 +36 35 56.5 – V 033
2021-09-09 09:07:53 C 04 04 28.19 +37 35 52.1 – V 734
2021-09-09 09:18:01 C 04 04 35.02 +37 37 37.9 – V 734
2021-09-09 09:30:08 C 04 04 43.17 +37 39 45.5 – V 734
2021-09-11 21:55:43 C 04 54 28.12 +47 40 37.1 – V 033
2021-09-11 21:56:57 C 04 54 29.33 +47 40 49.0 – V 033
2021-09-11 21:59:31 C 04 54 31.81 +47 41 12.7 – V 033