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
2013-04-19 23:58:24 C 12 04 40.40 +14 01 08.3 q C73
2013-04-19 23:59:34 C 12 04 40.39 +14 01 09.9 q C73
2013-04-20 00:00:43 C 12 04 40.39 +14 01 11.4 q C73
2013-04-20 00:01:53 C 12 04 40.38 +14 01 12.8 q C73
2013-04-20 00:03:02 C 12 04 40.38 +14 01 14.3 q C73
2013-04-20 00:04:12 C 12 04 40.37 +14 01 15.8 q C73
2013-04-20 00:05:21 C 12 04 40.36 +14 01 17.3 q C73
2013-04-20 00:05:55 C 12 04 40.37 +14 01 18.1 q C73
2013-04-20 00:06:30 C 12 04 40.37 +14 01 18.8 q C73
2013-04-20 00:07:05 C 12 04 40.36 +14 01 19.7 q C73
2013-04-20 00:07:40 C 12 04 40.36 +14 01 20.5 q C73
2013-04-20 00:08:15 C 12 04 40.36 +14 01 21.3 q C73
2013-04-20 00:08:49 C 12 04 40.36 +14 01 21.9 q C73
2013-04-23 19:38:33 C 12 04 41.41 +15 56 32.3 17.1 u 089
2013-04-23 19:41:12 C 12 04 41.42 +15 56 36.0 15.9 u 089
2013-04-23 19:43:51 C 12 04 41.42 +15 56 39.1 17.2 u 089
2013-04-23 19:46:30 C 12 04 41.41 +15 56 42.1 16.4 u 089
2013-04-23 19:49:09 C 12 04 41.40 +15 56 45.3 16.2 u 089
2013-04-23 19:51:48 C 12 04 41.40 +15 56 48.9 15.3 u 089
2013-04-23 19:54:27 C 12 04 41.39 +15 56 52.2 15.8 u 089
2013-04-23 19:57:06 C 12 04 41.40 +15 56 55.3 16.2 u 089
2013-04-23 19:59:45 C 12 04 41.40 +15 56 57.9 17.0 u 089
2013-04-23 20:02:24 C 12 04 41.37 +15 57 01.9 17.4 u 089
2013-04-25 03:29:04 C 12 04 52.25 +16 34 29.9 u H21
2013-04-25 03:33:28 C 12 04 52.27 +16 34 34.9 u H21
2013-04-25 03:38:04 C 12 04 52.26 +16 34 40.5 u H21
2013-04-25 03:43:56 C 12 04 52.25 +16 34 47.3 u H21
2013-04-25 03:51:15 C 12 04 52.25 +16 34 55.6 u H21
2013-04-26 04:20:08 C 12 05 04.38 +17 03 14.3 u H21
2013-04-26 04:25:06 C 12 05 04.40 +17 03 19.8 u H21
2013-04-26 04:34:50 C 12 05 04.43 +17 03 30.5 u H21
2013-04-26 04:41:45 C 12 05 04.44 +17 03 38.5 u H21
2013-04-28 14:01:33 C 12 05 47.41 +18 07 02.9 r D29
2013-04-28 14:40:40 C 12 05 47.69 +18 07 44.9 r D29
2013-04-28 15:19:48 C 12 05 48.06 +18 08 25.9 r D29
2013-05-30 05:07:43 C 12 47 10.17 +25 06 04.0 q 448
2013-05-30 05:13:56 C 12 47 10.78 +25 06 04.0 q 448
2013-05-30 05:22:05 C 12 47 11.43 +25 06 04.6 q 448
2013-05-30 05:29:26 C 12 47 12.07 +25 06 04.7 q 448
2013-06-04 04:56:05 C 12 58 37.59 +25 04 43.7 u 703
2013-06-04 05:07:35 C 12 58 38.67 +25 04 43.5 u 703
2013-06-04 05:18:53 C 12 58 39.75 +25 04 41.4 u 703
2013-06-04 05:30:14 C 12 58 40.80 +25 04 40.5 u 703
2013-06-13 05:44:59 C 13 22 01.92 +24 19 38.8 u 703
2013-06-13 05:55:26 C 13 22 03.14 +24 19 35.3 u 703
2013-06-13 06:06:02 C 13 22 04.22 +24 19 30.9 u 703
2013-06-13 06:16:35 C 13 22 05.34 +24 19 26.5 u 703
2013-06-20 05:05:53 C 13 42 09.28 +23 09 04.7 u 703
2013-06-20 05:13:09 C 13 42 10.18 +23 09 00.9 u 703
2013-06-20 05:20:23 C 13 42 11.01 +23 08 56.9 u 703