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
2015-02-17 06:18:23 C 09 31 35.29 +00 25 37.6 q 703
2015-02-17 06:29:36 C 09 31 34.59 +00 25 45.3 q 703
2015-02-17 06:40:49 C 09 31 33.85 +00 25 50.2 q 703
2015-02-17 08:17:06 C 09 31 27.69 +00 26 46.8 q 703
2015-02-17 08:21:44 C 09 31 27.44 +00 26 49.3 q 703
2015-02-17 08:26:22 C 09 31 27.18 +00 26 52.0 q 703
2015-02-17 08:30:59 C 09 31 26.83 +00 26 54.9 q 703
2015-03-11 04:30:06 C 09 02 57.17 +06 29 44.1 q 703
2015-03-11 04:35:53 C 09 02 56.93 +06 29 49.4 q 703
2015-03-11 04:41:39 C 09 02 56.65 +06 29 53.5 q 703
2015-03-11 04:47:28 C 09 02 56.38 +06 29 57.6 q 703
2015-03-12 14:09:31 C 09 01 38.13 +06 54 20.6 q D29
2015-03-12 14:37:27 C 09 01 37.01 +06 54 41.1 q D29
2015-03-12 15:05:24 C 09 01 35.85 +06 55 01.0 q D29
2015-03-15 02:48:36 C 08 59 30.62 +07 38 09.1 u H21
2015-03-15 02:52:36 C 08 59 30.48 +07 38 11.8 u H21
2015-03-15 02:56:29 C 08 59 30.33 +07 38 14.8 u H21
2015-03-15 03:00:06 C 08 59 30.21 +07 38 16.9 u H21
2015-03-15 04:20:24 C 08 59 27.58 +07 39 15.4 R G45
2015-03-15 04:29:45 C 08 59 27.25 +07 39 22.1 R G45
2015-03-15 04:43:10 C 08 59 26.78 +07 39 32.5 R G45
2015-03-15 04:49:31 C 08 59 26.55 +07 39 36.7 R G45
2015-03-16 06:20:38 C 08 58 38.57 +07 57 46.8 R G45
2015-03-16 07:04:03 C 08 58 37.17 +07 58 17.3 R G45
2015-03-16 07:06:52 C 08 58 37.04 +07 58 19.4 R G45
2015-03-16 07:17:09 C 08 58 36.74 +07 58 27.1 R G45
2015-03-16 07:28:56 C 08 58 36.35 +07 58 35.4 R G45
2015-03-16 07:38:56 C 08 58 36.05 +07 58 42.3 R G45
2015-03-17 04:07:11 C 08 58 01.09 +08 13 09.4 q 703
2015-03-17 04:18:13 C 08 58 00.77 +08 13 17.4 q 703
2015-03-17 04:29:13 C 08 58 00.38 +08 13 25.5 q 703
2015-03-17 04:40:15 C 08 58 00.07 +08 13 33.5 q 703
2015-03-17 06:33:02 C 08 57 56.55 +08 14 51.9 R G45
2015-03-17 06:53:35 C 08 57 55.92 +08 15 06.5 R G45
2015-03-17 07:06:27 C 08 57 55.51 +08 15 15.0 R G45
2015-03-17 07:16:38 C 08 57 55.28 +08 15 22.2 R G45
2015-03-18 05:43:57 C 08 57 20.207 +08 31 06.41 L F51
2015-03-18 06:01:31 C 08 57 19.692 +08 31 18.65 L F51
2015-03-18 06:19:09 C 08 57 19.190 +08 31 30.87 L F51
2015-03-18 06:36:33 C 08 57 18.685 +08 31 43.08 L F51
2015-03-19 09:41:33 C 08 56 38.630 +08 50 24.11 L F51
2015-03-19 09:58:50 C 08 56 38.179 +08 50 35.86 L F51
2015-03-19 10:16:04 C 08 56 37.736 +08 50 47.57 L F51
2015-03-19 10:33:23 C 08 56 37.292 +08 50 59.39 L F51
2015-03-25 12:42:40 C 08 54 20.22 +10 26 52.5 q D29
2015-03-25 13:02:59 C 08 54 20.08 +10 27 05.6 q D29
2015-03-25 13:23:19 C 08 54 19.76 +10 27 17.5 q D29
2015-03-27 04:20:19 C 08 54 04.82 +10 51 15.8 q G96
2015-03-27 04:29:20 C 08 54 04.74 +10 51 21.5 q G96
2015-03-27 04:38:21 C 08 54 04.68 +10 51 26.9 q G96