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
2015-03-27 04:47:25 C 08 54 04.60 +10 51 32.5 q G96
2015-04-14 04:14:51 C 09 01 08.23 +14 24 25.3 q G96
2015-04-14 04:27:58 C 09 01 08.67 +14 24 29.7 q G96
2015-04-14 04:37:31 C 09 01 09.02 +14 24 33.2 q G96
2015-04-14 04:47:02 C 09 01 09.31 +14 24 36.9 q G96
2017-01-20 11:26:07 C 08 15 50.596 +02 25 12.75 L F51
2017-01-20 11:44:03 C 08 15 49.442 +02 25 17.07 L F51
2017-01-20 12:02:00 C 08 15 48.291 +02 25 21.43 L F51
2017-01-28 07:00:39 C 08 03 58.10 +03 20 36.2 q G96
2017-01-28 07:06:52 C 08 03 57.74 +03 20 38.1 q G96
2017-01-28 07:13:09 C 08 03 57.30 +03 20 40.3 q G96
2017-01-29 04:08:20 C 08 02 37.55 +03 28 00.6 V G45
2017-01-29 04:35:17 C 08 02 35.80 +03 28 10.8 V G45
2017-01-29 07:56:37 C 08 02 22.46 +03 29 22.6 V G45
2017-01-29 08:00:48 C 08 02 22.26 +03 29 23.7 V G45
2017-01-29 08:25:52 C 08 02 20.59 +03 29 32.9 V G45
2017-01-29 09:21:29 C 08 02 16.93 +03 29 52.8 V G45
2017-01-29 10:41:42 C 08 02 11.989 +03 30 23.85 L F51
2017-01-29 11:13:42 C 08 02 09.874 +03 30 35.36 L F51
2017-01-29 11:29:41 C 08 02 08.816 +03 30 41.05 L F51
2017-01-30 04:32:51 C 08 01 04.27 +03 36 51.9 V G45
2017-01-30 05:30:00 C 08 01 00.45 +03 37 12.3 V G45
2017-01-30 06:25:57 C 08 00 56.74 +03 37 32.9 V G45
2017-01-30 07:20:06 C 08 00 53.21 +03 37 53.1 V G45
2017-01-31 03:23:39 C 07 59 37.51 +03 45 23.8 V G45
2017-01-31 04:22:35 C 07 59 33.69 +03 45 46.1 V G45
2017-01-31 05:46:26 C 07 59 28.19 +03 46 17.4 V G45
2017-01-31 06:10:41 C 07 59 26.55 +03 46 26.8 V G45
2017-01-31 06:14:32 C 07 59 26.37 +03 46 28.3 V G45
2017-01-31 07:32:24 C 07 59 21.22 +03 46 57.5 V G45
2017-01-31 08:57:52 C 07 59 15.69 +03 47 30.0 V G45
2017-01-31 09:26:23 C 07 59 13.81 +03 47 40.2 V G45
2017-01-31 09:56:00 C 07 59 11.93 +03 47 51.8 V G45
2017-02-02 04:56:54 C 07 56 30.92 +04 04 39.9 V G45
2017-02-02 05:01:28 C 07 56 30.59 +04 04 41.4 V G45
2017-02-02 05:58:39 C 07 56 26.89 +04 05 04.9 V G45
2017-02-02 06:55:51 C 07 56 23.24 +04 05 27.3 V G45
2017-02-02 07:52:04 C 07 56 19.60 +04 05 49.7 V G45
2017-02-02 07:54:17 C 07 56 19.43 +04 05 51.3 V G45
2018-12-14 08:51:24 C 07 38 53.23 +04 43 58.5 V G96
2018-12-14 08:59:28 C 07 38 52.93 +04 43 57.5 V G96
2018-12-14 09:07:34 C 07 38 52.54 +04 43 56.0 V G96
2018-12-14 09:15:41 C 07 38 52.32 +04 43 55.5 V G96
2021-01-11 05:01:52 C 05 47 29.05 +06 15 47.7 V G96
2021-01-11 05:09:57 C 05 47 28.63 +06 15 48.7 V G96
2021-01-11 05:18:00 C 05 47 28.20 +06 15 50.0 V G96
2021-01-11 05:26:05 C 05 47 27.78 +06 15 51.6 V G96
2022-11-25 12:11:42 C 05 44 51.274 +07 07 28.74 U F51
2022-11-25 12:26:49 C 05 44 50.470 +07 07 24.97 U F51
2022-11-25 12:41:58 C 05 44 49.670 +07 07 21.54 U F51