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
2013-06-20 05:27:40 C 13 42 11.91 +23 08 53.6 u 703
2013-07-20 03:30:03 C 15 21 42.14 +12 54 33.3 u H21
2013-07-20 03:34:13 C 15 21 42.74 +12 54 28.3 u H21
2013-07-20 03:38:36 C 15 21 43.38 +12 54 23.1 u H21
2013-07-23 02:03:47 C 15 32 12.71 +11 32 58.9 u H21
2013-07-23 02:14:22 C 15 32 14.20 +11 32 46.2 u H21
2013-07-23 02:19:07 C 15 32 14.89 +11 32 40.8 u H21
2013-07-23 02:23:40 C 15 32 15.54 +11 32 35.3 u H21
2013-07-26 02:15:32 C 15 43 00.64 +10 07 15.2 u H21
2013-07-26 02:19:09 C 15 43 01.17 +10 07 10.8 u H21
2013-07-26 02:22:24 C 15 43 01.64 +10 07 07.0 u H21
2013-07-26 02:31:31 C 15 43 02.96 +10 06 56.0 u H21
2013-07-27 01:15:04 C 15 46 27.03 +09 39 55.9 r Y00
2013-07-27 01:17:42 C 15 46 27.34 +09 39 51.5 r Y00
2013-07-27 01:20:20 C 15 46 27.82 +09 39 49.3 r Y00
2013-08-02 01:56:31 C 16 08 14.51 +06 42 27.0 u H21
2013-08-02 02:02:33 C 16 08 15.38 +06 42 19.4 u H21
2013-08-02 02:08:34 C 16 08 16.27 +06 42 12.2 u H21
2013-08-02 21:10:41 C 16 11 08.28 +06 18 39.1 q 160
2013-08-02 21:12:48 C 16 11 08.58 +06 18 36.5 q 160
2013-08-02 21:15:17 C 16 11 08.88 +06 18 33.5 q 160
2013-08-05 02:42:55 C 16 19 13.08 +05 12 32.7 q I15
2013-08-05 02:47:09 C 16 19 13.75 +05 12 26.8 q I15
2013-08-05 02:51:22 C 16 19 14.27 +05 12 22.5 q I15
2013-08-16 20:20:46 C 17 01 39.03 -00 26 15.7 q 160
2013-08-16 20:24:29 C 17 01 39.51 -00 26 20.9 q 160
2013-08-16 20:28:23 C 17 01 40.04 -00 26 25.2 q 160
2013-08-17 20:15:16 C 17 05 13.65 -00 53 37.6 q 160
2013-08-17 20:19:15 C 17 05 14.25 -00 53 42.2 q 160
2013-08-17 20:23:01 C 17 05 14.80 -00 53 46.7 q 160
2013-09-28 02:34:32 C 19 24 11.49 -13 30 24.4 q 448
2013-09-28 03:14:30 C 19 24 16.42 -13 30 37.7 q 448
2013-09-28 03:46:14 C 19 24 20.44 -13 30 49.6 q 448
2014-11-26 10:39:13 C 09 42 05.54 +02 17 31.1 u H21
2014-11-26 10:51:30 C 09 42 06.10 +02 17 26.1 u H21
2014-11-26 11:07:25 C 09 42 06.77 +02 17 19.9 u H21
2015-01-21 12:15:32 C 10 01 37.742 -02 59 47.64 L F51
2015-01-21 12:35:02 C 10 01 37.172 -02 59 46.39 L F51
2015-01-21 12:54:25 C 10 01 36.606 -02 59 45.16 L F51
2015-01-21 13:13:45 C 10 01 36.032 -02 59 44.10 L F51
2015-01-26 11:13:18 C 09 57 56.23 -02 47 10.6 R G45
2015-01-26 11:19:13 C 09 57 56.02 -02 47 10.3 R G45
2015-01-26 11:22:48 C 09 57 55.90 -02 47 09.2 R G45
2015-01-26 11:28:52 C 09 57 55.67 -02 47 08.7 R G45
2015-01-26 11:34:50 C 09 57 55.46 -02 47 07.2 R G45
2015-02-08 08:00:39 C 09 43 58.58 -01 20 48.0 q 703
2015-02-08 08:07:53 C 09 43 58.21 -01 20 44.8 q 703
2015-02-08 08:15:06 C 09 43 57.77 -01 20 41.6 q 703
2015-02-08 08:22:20 C 09 43 57.41 -01 20 38.1 q 703
2015-02-17 06:07:10 C 09 31 36.02 +00 25 30.6 q 703