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
2009-09-25 09:16:05 C 01 15 07.66 +04 54 19.3 r 703
2009-09-25 09:23:17 C 01 15 07.27 +04 54 13.6 r 703
2009-09-25 09:30:41 C 01 15 06.87 +04 54 06.6 r 703
2009-09-25 09:38:00 C 01 15 06.51 +04 54 02.1 r 703
2009-09-28 22:35:17 C 01 10 29.90 +03 47 27.4 o B88
2009-09-28 23:05:18 C 01 10 28.12 +03 47 03.9 o B88
2009-09-28 23:35:20 C 01 10 26.44 +03 46 40.9 o B88
2009-10-12 13:15:09 C 00 52 50.60 -00 09 27.3 o 474
2009-10-12 13:17:44 C 00 52 50.44 -00 09 29.9 o 474
2009-10-12 13:20:19 C 00 52 50.32 -00 09 31.1 o 474
2009-10-12 13:22:48 C 00 52 50.21 -00 09 31.6 o 474
2009-10-13 05:38:32 C 00 52 01.83 -00 20 11.7 19.6 c 704
2009-10-13 05:57:01 C 00 52 00.87 -00 20 23.3 19.5 c 704
2009-10-13 06:33:48 C 00 51 58.96 -00 20 46.6 19.1 c 704
2009-10-17 05:24:01 C 00 47 29.29 -01 17 55.4 r G96
2009-10-17 05:34:41 C 00 47 28.82 -01 18 01.1 r G96
2009-10-17 05:45:23 C 00 47 28.32 -01 18 07.3 r G96
2009-10-17 05:56:21 C 00 47 27.78 -01 18 13.2 r G96
2009-10-20 05:26:22 C 00 44 22.78 -01 56 55.9 20.0 c 704
2009-10-20 05:45:33 C 00 44 22.04 -01 57 06.2 19.7 c 704
2009-10-20 06:04:45 C 00 44 21.13 -01 57 14.7 20.2 c 704
2009-10-20 06:23:57 C 00 44 20.36 -01 57 26.8 20.2 c 704
2009-11-23 02:48:21 C 00 32 43.66 -04 49 16.9 o 291
2009-11-23 03:00:03 C 00 32 43.79 -04 49 15.5 o 291
2009-11-23 03:10:24 C 00 32 43.90 -04 49 14.6 o 291
2011-03-11 11:27:42 C 16 28 59.53 -16 05 19.3 o 291
2011-03-11 11:33:59 C 16 29 00.51 -16 05 17.5 o 291
2011-03-11 11:43:36 C 16 29 02.07 -16 05 14.0 o 291
2011-04-10 02:45:48 C 18 29 47.66 -07 47 09.8 r A17
2011-04-10 02:57:02 C 18 29 49.52 -07 46 58.7 r A17
2011-04-10 03:08:16 C 18 29 51.37 -07 46 47.2 r A17
2011-06-05 09:31:07 C 21 44 32.82 +15 23 45.3 r 703
2011-06-05 09:44:32 C 21 44 34.18 +15 23 54.8 r 703
2011-06-05 09:58:03 C 21 44 35.55 +15 24 05.1 r 703
2011-06-05 10:11:34 C 21 44 36.92 +15 24 14.7 r 703
2011-06-12 09:05:35 C 22 01 20.53 +17 11 02.2 u 703
2011-06-12 09:20:13 C 22 01 21.86 +17 11 11.1 u 703
2011-06-12 09:31:06 C 22 01 22.83 +17 11 17.8 u 703
2011-06-12 09:41:57 C 22 01 23.84 +17 11 24.6 u 703
2011-06-23 23:14:26 C 22 24 53.43 +19 19 49.9 c A24
2011-06-23 23:16:29 C 22 24 53.51 +19 19 50.6 c A24
2011-06-24 23:55:38 C 22 26 41.83 +19 28 10.1 c A24
2011-06-25 00:50:16 C 22 26 45.66 +19 28 28.6 c A24
2011-06-25 00:52:19 C 22 26 45.82 +19 28 29.8 c A24
2011-06-25 23:33:51 C 22 28 23.20 +19 35 38.4 c A24
2011-06-25 23:35:58 C 22 28 23.29 +19 35 40.5 c A24
2011-06-26 00:22:26 C 22 28 26.42 +19 35 54.5 c A24
2011-06-26 00:24:32 C 22 28 26.54 +19 35 56.3 c A24
2011-06-27 23:48:46 C 22 31 41.28 +19 49 23.7 c A24
2011-06-27 23:50:51 C 22 31 41.43 +19 49 23.7 c A24