274855 (2009 RB4)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3008662473 ± 1.82e-08
Semi-major axis (a)1.6386494564 AU ± 6.52e-09
Inclination (i)9.53587656° ± 3.12e-06
Long. of Asc. Node (Ω)182.10122304° ± 1.07e-05
Arg. of Perihelion (ω)75.21475080° ± 1.37e-05
Mean Anomaly (M)329.91872670° ± 1.65e-05
Mean Motion (n)0.4698759197°/day ± 2.80e-09
Perihelion dist (q)1.14563514 AU ± 3.01e-08
Aphelion dist (Q)2.13166377 AU ± 3.10e-08
Orbital Period2.09763097 yr ± 1.25e-08
Physical Parameters
H (abs. magnitude)18.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.348″
Uncertainty0
Orbit TypeAmor
MOID0.210275 AU
Observations Used505
Oppositions18
Arc Total1990-2024
First Observation Used1990-07-27
Last Observation Used2024-12-23
Observations (530)
Date Type RA Dec Mag Band Observatory
2022-11-25 12:57:06 C 05 44 48.868 +07 07 17.92 U F51
2022-11-30 08:51:05 C 05 38 36.550 +06 41 40.99 V G96
2022-11-30 08:58:34 C 05 38 36.161 +06 41 39.37 V G96
2022-11-30 09:06:03 C 05 38 35.689 +06 41 37.14 V G96
2022-11-30 09:13:32 C 05 38 35.311 +06 41 36.06 V G96
2024-10-07 12:48:15 C 05 14 08.412 +12 17 15.70 X F52
2024-10-07 13:05:31 C 05 14 08.491 +12 17 10.59 X F52
2024-10-07 13:40:08 C 05 14 08.635 +12 17 00.27 X F52
2024-10-11 08:35:59 C 05 14 26.00 +11 49 04.8 V H21
2024-10-11 08:55:43 C 05 14 25.99 +11 48 57.8 V H21
2024-11-10 13:28:58 C 04 56 16.491 +07 43 38.76 X F51
2024-11-10 13:48:56 C 04 56 15.482 +07 43 32.19 X F51
2024-11-10 14:08:59 C 04 56 14.469 +07 43 25.60 X F51
2024-11-23 10:07:35 C 04 39 11.394 +06 10 49.88 X F52
2024-11-23 10:24:09 C 04 39 10.350 +06 10 45.72 X F52
2024-11-23 10:40:41 C 04 39 09.335 +06 10 41.45 X F52
2024-11-23 10:57:16 C 04 39 08.303 +06 10 37.17 X F52
2024-11-27 09:47:37 C 04 33 22.083 +05 47 18.70 X F52
2024-11-27 10:05:32 C 04 33 20.941 +05 47 14.87 X F52
2024-11-27 10:41:06 C 04 33 18.677 +05 47 06.83 X F52
2024-12-03 10:00:53 C 04 24 32.828 +05 18 13.70 X F51
2024-12-03 10:18:44 C 04 24 31.719 +05 18 10.70 X F51
2024-12-03 10:36:41 C 04 24 30.594 +05 18 07.54 X F51
2024-12-07 08:53:39 C 04 18 54.081 +05 03 45.10 X F52
2024-12-07 09:11:17 C 04 18 53.013 +05 03 42.89 X F52
2024-12-07 09:29:06 C 04 18 51.937 +05 03 40.32 X F52
2024-12-07 09:46:59 C 04 18 50.859 +05 03 38.13 X F52
2024-12-23 07:20:27 C 03 59 38.921 +04 45 22.46 X F51
2024-12-23 07:53:48 C 03 59 37.498 +04 45 23.35 X F51
2024-12-23 08:10:35 C 03 59 36.804 +04 45 24.13 X F51