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
2021-09-29 04:25:25 C 20 51 17.58 +19 25 38.9 o 691
2021-09-29 04:36:36 C 20 51 17.33 +19 25 35.1 o 691
2021-10-01 18:13:15 C 20 50 08.95 +19 05 08.2 X 595
2021-10-01 18:26:13 C 20 50 08.76 +19 05 03.3 X 595
2021-10-01 18:39:11 C 20 50 08.46 +19 04 58.8 X 595
2021-10-07 03:52:21 C 20 48 57.76 +18 18 53.6 o 691
2021-10-07 03:57:36 C 20 48 57.72 +18 18 52.2 o 691
2021-10-07 04:02:49 C 20 48 57.72 +18 18 50.0 o 691
2021-10-14 02:24:52 C 20 50 00.36 +17 15 48.4 V G96
2021-10-14 02:33:15 C 20 50 00.47 +17 15 45.7 V G96
2021-10-14 02:41:38 C 20 50 00.59 +17 15 42.7 V G96
2021-10-14 02:50:00 C 20 50 00.69 +17 15 39.0 V G96
2021-10-23 09:35:32 S 20 55 58.450 +15 51 18.11 L C51
2021-10-23 22:08:15 S 20 56 27.823 +15 46 40.19 L C51
2021-10-24 09:07:05 S 20 56 54.485 +15 42 37.76 L C51
2021-10-24 15:23:21 S 20 57 09.958 +15 40 18.88 L C51
2021-10-25 02:30:52 C 20 57 38.24 +15 36 14.4 o 691
2021-10-25 02:40:53 C 20 57 38.62 +15 36 10.7 o 691
2021-10-25 02:50:55 C 20 57 39.01 +15 36 07.1 o 691
2021-10-28 02:23:14 C 21 00 58.38 +15 10 24.2 V I52
2021-10-28 02:28:52 C 21 00 58.68 +15 10 21.5 V I52
2021-10-28 02:34:22 C 21 00 58.92 +15 10 19.7 V I52
2021-10-28 02:40:21 C 21 00 59.21 +15 10 17.4 V I52
2021-11-02 03:54:50 C 21 07 49.54 +14 28 40.4 V G96
2021-11-02 03:55:32 C 21 07 49.57 +14 28 40.0 V G96
2021-11-02 04:02:54 C 21 07 49.99 +14 28 37.6 V G96
2021-11-02 04:03:36 C 21 07 50.04 +14 28 37.7 V G96
2021-11-02 04:11:00 C 21 07 50.49 +14 28 35.0 V G96
2021-11-02 04:11:41 C 21 07 50.51 +14 28 34.8 V G96
2021-11-03 03:06:40 C 21 09 18.63 +14 21 02.5 U I41
2021-11-03 03:58:40 C 21 09 21.86 +14 20 45.2 U I41
2021-11-03 04:40:40 C 21 09 24.50 +14 20 31.1 U I41
2021-11-03 04:42:00 C 21 09 24.57 +14 20 30.7 U I41
2021-11-06 03:40:07 C 21 14 17.95 +13 57 55.8 o 691
2021-11-06 04:06:55 C 21 14 19.83 +13 57 47.2 o 691
2021-11-06 04:33:42 C 21 14 21.69 +13 57 38.2 o 691
2021-11-07 06:33:23 C 21 16 17.128 +13 49 41.90 U F51
2021-11-07 06:51:30 C 21 16 18.435 +13 49 36.39 U F51
2021-11-07 07:09:38 C 21 16 19.755 +13 49 30.73 U F51
2021-11-08 02:07:49 C 21 17 46.93 +13 43 45.9 V G96
2021-11-08 02:15:59 C 21 17 47.49 +13 43 43.7 V G96
2021-11-08 02:24:08 C 21 17 48.14 +13 43 40.8 V G96
2021-11-08 02:32:17 C 21 17 48.77 +13 43 38.2 V G96
2021-11-11 02:11:07 C 21 23 36.55 +13 22 51.3 o 691
2021-11-11 02:20:04 C 21 23 37.27 +13 22 49.0 o 691
2021-11-11 02:28:59 C 21 23 38.00 +13 22 46.3 o 691
2021-11-12 01:55:32 C 21 25 38.59 +13 16 15.0 o 691
2021-11-12 02:13:32 C 21 25 40.11 +13 16 10.0 o 691
2021-11-12 02:22:32 C 21 25 40.84 +13 16 07.8 o 691
2021-11-12 02:31:32 C 21 25 41.62 +13 16 05.1 o 691