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
2013-04-01 23:03:46 C 12 12 17.46 +03 47 28.2 q C73
2013-04-01 23:04:56 C 12 12 17.42 +03 47 29.9 q C73
2013-04-01 23:06:06 C 12 12 17.39 +03 47 31.5 q C73
2013-04-01 23:07:15 C 12 12 17.36 +03 47 33.0 q C73
2013-04-01 23:08:24 C 12 12 17.32 +03 47 34.8 q C73
2013-04-04 08:59:50 C 12 10 51.627 +05 10 25.81 L F51
2013-04-04 09:21:04 C 12 10 50.961 +05 10 56.43 L F51
2013-04-04 09:42:16 C 12 10 50.288 +05 11 27.03 L F51
2013-04-04 10:03:31 C 12 10 49.618 +05 11 57.65 L F51
2013-04-07 20:25:48 C 12 08 54.26 +07 11 21.9 q A13
2013-04-07 21:02:56 C 12 08 53.25 +07 12 16.2 q A13
2013-04-10 08:24:38 C 12 07 38.006 +08 38 50.03 L F51
2013-04-10 08:41:37 C 12 07 37.547 +08 39 14.74 L F51
2013-04-11 05:53:32 C 12 07 12.86 +09 09 51.3 u 703
2013-04-11 06:00:49 C 12 07 12.68 +09 10 01.9 u 703
2013-04-11 06:08:04 C 12 07 12.50 +09 10 12.5 u 703
2013-04-11 06:15:27 C 12 07 12.28 +09 10 23.8 u 703
2013-04-12 01:41:37 C 12 06 50.34 +09 38 25.9 q G40
2013-04-12 02:01:30 C 12 06 49.86 +09 38 54.4 q G40
2013-04-12 02:21:52 C 12 06 49.40 +09 39 23.6 q G40
2013-04-15 00:05:32 C 12 05 44.57 +11 18 25.3 q 160
2013-04-15 00:09:27 C 12 05 44.49 +11 18 30.7 q 160
2013-04-15 00:13:23 C 12 05 44.40 +11 18 36.3 q 160
2013-04-15 04:58:31 C 12 05 41.85 +11 25 21.6 u 703
2013-04-15 05:09:02 C 12 05 41.64 +11 25 36.2 u 703
2013-04-15 05:19:29 C 12 05 41.42 +11 25 50.7 u 703
2013-04-15 20:56:22 C 12 05 29.88 +11 47 32.0 c A24
2013-04-15 20:57:24 C 12 05 29.89 +11 47 34.1 c A24
2013-04-15 23:01:01 C 12 05 27.64 +11 50 24.7 q 160
2013-04-15 23:04:34 C 12 05 27.58 +11 50 29.4 q 160
2013-04-15 23:08:07 C 12 05 27.51 +11 50 34.2 q 160
2013-04-17 22:48:59 C 12 04 59.14 +12 55 52.1 i C91
2013-04-17 22:54:00 C 12 04 59.11 +12 55 59.4 i C91
2013-04-17 22:58:45 C 12 04 59.01 +12 56 05.2 q 160
2013-04-17 22:59:00 C 12 04 59.00 +12 56 05.7 i C91
2013-04-17 23:02:49 C 12 04 58.94 +12 56 10.7 q 160
2013-04-17 23:03:59 C 12 04 58.94 +12 56 12.3 i C91
2013-04-17 23:06:19 C 12 04 58.87 +12 56 15.4 q 160
2013-04-17 23:08:59 C 12 04 58.89 +12 56 19.0 i C91
2013-04-17 23:14:00 C 12 04 58.83 +12 56 26.3 i C91
2013-04-18 21:09:41 C 12 04 49.98 +13 25 49.8 q 160
2013-04-18 21:13:20 C 12 04 49.98 +13 25 54.7 q 160
2013-04-18 21:17:27 C 12 04 49.94 +13 26 01.4 q 160
2013-04-19 03:43:12 C 12 04 48.16 +13 34 36.8 q H06
2013-04-19 04:19:51 C 12 04 47.71 +13 35 25.5 q H06
2013-04-19 23:52:36 C 12 04 40.44 +14 01 01.0 q C73
2013-04-19 23:53:46 C 12 04 40.44 +14 01 02.5 q C73
2013-04-19 23:54:55 C 12 04 40.43 +14 01 04.0 q C73
2013-04-19 23:56:05 C 12 04 40.43 +14 01 05.5 q C73
2013-04-19 23:57:14 C 12 04 40.41 +14 01 07.0 q C73