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
2013-02-23 09:09:12 C 12 22 21.50 -09 37 19.5 r 703
2013-02-23 09:18:13 C 12 22 21.57 -09 37 16.8 r 703
2013-02-23 09:27:19 C 12 22 21.61 -09 37 12.5 r 703
2013-02-23 09:36:17 C 12 22 21.79 -09 37 11.5 r 703
2013-02-24 08:27:34 C 12 22 37.87 -09 29 49.7 u H21
2013-02-24 08:33:12 C 12 22 37.90 -09 29 47.7 u H21
2013-02-24 08:38:51 C 12 22 37.94 -09 29 45.5 u H21
2013-02-24 08:44:29 C 12 22 37.95 -09 29 43.6 u H21
2013-02-24 08:49:42 C 12 22 37.99 -09 29 41.9 u H21
2013-03-03 06:33:18 C 12 23 42.21 -08 17 37.0 o 691
2013-03-03 06:58:43 C 12 23 42.14 -08 17 22.9 o 691
2013-03-03 07:24:08 C 12 23 42.08 -08 17 09.7 o 691
2013-03-12 09:00:38 C 12 22 35.07 -05 47 20.7 u G96
2013-03-12 09:13:20 C 12 22 34.86 -05 47 09.9 u G96
2013-03-12 09:26:15 C 12 22 34.68 -05 46 59.1 u G96
2013-03-12 09:38:57 C 12 22 34.46 -05 46 48.4 u G96
2013-03-13 05:26:49 C 12 22 21.37 -05 29 49.9 V G45
2013-03-13 05:44:45 C 12 22 21.07 -05 29 34.3 V G45
2013-03-13 06:20:30 C 12 22 20.46 -05 29 03.3 V G45
2013-03-13 08:13:47 C 12 22 18.50 -05 27 24.6 V G45
2013-03-13 08:45:47 C 12 22 17.92 -05 26 56.4 V G45
2013-03-13 09:31:32 C 12 22 17.18 -05 26 15.7 u 703
2013-03-13 09:41:48 C 12 22 17.00 -05 26 06.9 u 703
2013-03-13 09:52:11 C 12 22 16.82 -05 25 58.0 u 703
2013-03-13 10:02:30 C 12 22 16.68 -05 25 48.9 u 703
2013-03-14 05:29:17 C 12 22 02.44 -05 08 28.0 V G45
2013-03-14 05:50:19 C 12 22 02.08 -05 08 09.4 V G45
2013-03-14 06:24:11 C 12 22 01.46 -05 07 38.5 V G45
2013-03-14 08:19:31 C 12 21 59.30 -05 05 53.4 V G45
2013-03-14 09:22:33 C 12 21 58.11 -05 04 56.5 V G45
2013-03-18 05:43:35 C 12 20 29.65 -03 34 42.7 V G45
2013-03-18 06:36:00 C 12 20 28.43 -03 33 48.2 V G45
2013-03-18 08:27:29 C 12 20 25.81 -03 31 51.8 V G45
2013-03-18 09:30:16 C 12 20 24.33 -03 30 46.4 V G45
2013-04-01 05:43:54 C 12 12 44.60 +03 23 07.0 u 703
2013-04-01 05:55:58 C 12 12 44.20 +03 23 24.3 u 703
2013-04-01 06:08:10 C 12 12 43.81 +03 23 41.2 u 703
2013-04-01 22:48:44 C 12 12 17.91 +03 47 06.8 q C73
2013-04-01 22:49:54 C 12 12 17.89 +03 47 08.5 q C73
2013-04-01 22:51:03 C 12 12 17.84 +03 47 10.3 q C73
2013-04-01 22:52:13 C 12 12 17.83 +03 47 11.7 q C73
2013-04-01 22:53:22 C 12 12 17.79 +03 47 13.5 q C73
2013-04-01 22:54:32 C 12 12 17.75 +03 47 15.2 q C73
2013-04-01 22:55:41 C 12 12 17.72 +03 47 16.8 q C73
2013-04-01 22:56:51 C 12 12 17.69 +03 47 18.5 q C73
2013-04-01 22:57:59 C 12 12 17.65 +03 47 20.3 q C73
2013-04-01 22:59:09 C 12 12 17.61 +03 47 21.8 q C73
2013-04-01 23:00:18 C 12 12 17.58 +03 47 23.1 q C73
2013-04-01 23:01:27 C 12 12 17.53 +03 47 25.1 q C73
2013-04-01 23:02:37 C 12 12 17.51 +03 47 26.6 q C73