2021 RO9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5799690436 ± 3.98e-06
Semi-major axis (a)2.7734753708 AU ± 2.86e-05
Inclination (i)16.21427411° ± 3.69e-05
Long. of Asc. Node (Ω)261.10895041° ± 9.55e-05
Arg. of Perihelion (ω)160.89359252° ± 3.95e-05
Mean Anomaly (M)303.36429283° ± 4.68e-03
Mean Motion (n)0.2133908561°/day ± 3.30e-06
Perihelion dist (q)1.16494551 AU ± 1.63e-05
Aphelion dist (Q)4.38200523 AU ± 4.65e-05
Orbital Period4.61887778 yr ± 7.14e-05
Physical Parameters
H (abs. magnitude)18.98
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.238″
Uncertainty1
Orbit TypeAmor
MOID0.191018 AU
Observations Used138
Oppositions1
Arc Total2021-2022
First Observation Used2021-09-06
Last Observation Used2022-03-02
Observations (147)
Date Type RA Dec Mag Band Observatory
2021-09-06 06:03:58 C 21 14 43.88 +21 01 51.3 V G96
2021-09-09 10:37:21 C 21 10 24.712 +21 00 31.89 U F52
2021-09-09 10:53:56 C 21 10 23.752 +21 00 30.90 U F52
2021-09-09 11:10:31 C 21 10 22.794 +21 00 29.93 U F52
2021-09-09 11:27:08 C 21 10 21.848 +21 00 28.98 U F52
2021-09-09 19:28:09 C 21 09 56.22 +21 00 00.9 V 246
2021-09-09 19:29:47 C 21 09 56.20 +21 00 00.5 V 246
2021-09-09 20:23:49 C 21 09 53.08 +20 59 57.1 V 033
2021-09-09 20:25:09 C 21 09 53.00 +20 59 56.9 V 033
2021-09-09 20:26:28 C 21 09 52.93 +20 59 56.9 V 033
2021-09-09 20:28:39 C 21 09 52.81 +20 59 56.7 V 033
2021-09-09 20:47:14 C 21 09 51.76 +20 59 56.9 V L01
2021-09-09 20:51:29 C 21 09 51.49 +20 59 56.3 V L01
2021-09-09 20:55:44 C 21 09 51.24 +20 59 56.4 V L01
2021-09-09 20:59:59 C 21 09 50.99 +20 59 56.8 V L01
2021-09-10 01:34:03 C 21 09 36.39 +20 59 41.7 X W34
2021-09-10 01:43:18 C 21 09 35.90 +20 59 40.8 u H21
2021-09-10 01:47:09 C 21 09 35.66 +20 59 41.9 X W34
2021-09-10 01:55:23 C 21 09 35.20 +20 59 40.0 u H21
2021-09-10 02:00:29 C 21 09 34.89 +20 59 40.7 X W34
2021-09-10 02:08:09 C 21 09 34.48 +20 59 39.2 u H21
2021-09-10 22:18:58 C 21 08 28.85 +20 58 17.3 V 033
2021-09-10 22:21:08 C 21 08 28.68 +20 58 16.3 V 033
2021-09-10 22:22:28 C 21 08 28.62 +20 58 16.3 V 033
2021-09-11 19:01:34 C 21 07 23.40 +20 56 34.4 V 033
2021-09-11 19:02:39 C 21 07 23.34 +20 56 34.4 V 033
2021-09-11 19:03:44 C 21 07 23.29 +20 56 34.4 V 033
2021-09-11 19:04:52 C 21 07 23.23 +20 56 34.2 V 033
2021-09-12 01:36:52 C 21 07 02.77 +20 56 00.3 u H21
2021-09-12 01:40:53 C 21 07 02.54 +20 56 00.2 u H21
2021-09-12 01:46:56 C 21 07 02.22 +20 55 59.6 u H21
2021-09-12 04:08:34 C 21 06 54.82 +20 55 46.8 V 654
2021-09-12 04:14:19 C 21 06 54.50 +20 55 46.5 V 654
2021-09-12 05:09:01 C 21 06 51.51 +20 55 41.0 V 654
2021-09-12 05:14:47 C 21 06 51.20 +20 55 40.5 V 654
2021-09-12 05:21:11 C 21 06 50.78 +20 55 40.7 o 691
2021-09-12 05:24:51 C 21 06 50.59 +20 55 40.3 o 691
2021-09-12 05:28:31 C 21 06 50.39 +20 55 40.3 o 691
2021-09-16 02:01:42 C 21 02 16.28 +20 43 39.8 u H21
2021-09-16 02:08:25 C 21 02 15.95 +20 43 38.8 u H21
2021-09-16 02:14:35 C 21 02 15.64 +20 43 38.0 u H21
2021-09-16 02:31:13 C 21 02 15.10 +20 43 35.6 V G96
2021-09-16 02:39:38 C 21 02 14.69 +20 43 34.3 V G96
2021-09-16 02:48:00 C 21 02 14.24 +20 43 33.4 V G96
2021-09-16 02:56:24 C 21 02 13.87 +20 43 32.1 V G96
2021-09-24 04:26:31 C 20 54 31.88 +20 01 15.0 V G96
2021-09-24 04:33:31 C 20 54 31.63 +20 01 13.3 V G96
2021-09-24 04:40:30 C 20 54 31.40 +20 01 11.3 V G96
2021-09-24 04:47:28 C 20 54 31.14 +20 01 09.1 V G96
2021-09-29 04:12:27 C 20 51 17.92 +19 25 42.8 o 691