857494 (2012 OP4)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6583678060 ± 1.76e-08
Semi-major axis (a)2.1174129672 AU ± 4.08e-09
Inclination (i)20.65229214° ± 7.37e-06
Long. of Asc. Node (Ω)143.55227250° ± 2.63e-06
Arg. of Perihelion (ω)262.86307290° ± 4.27e-06
Mean Anomaly (M)93.32767985° ± 4.46e-06
Mean Motion (n)0.3198924010°/day ± 9.25e-10
Perihelion dist (q)0.72337644 AU ± 3.74e-08
Aphelion dist (Q)3.51144950 AU ± 3.79e-08
Orbital Period3.08111815 yr ± 8.91e-09
Physical Parameters
H (abs. magnitude)20.06
G (slope)0.15
Alternative Designations

2019 BR4

Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.293″
Uncertainty0
Orbit TypeApollo
MOID0.048158 AU
Observations Used335
Oppositions7
Arc Total2012-2022
First Observation Used2012-07-28
Last Observation Used2022-03-01
Observations (365)
Date Type RA Dec Mag Band Observatory
2019-01-29 22:07:37 C 08 47 34.91 -19 24 12.8 V L01
2019-01-29 22:28:12 C 08 47 34.56 -19 21 06.3 q K61
2019-01-29 22:31:29 C 08 47 34.64 -19 20 34.9 q K61
2019-01-29 22:32:37 C 08 47 34.59 -19 20 24.7 q K61
2019-01-30 12:23:00 C 08 47 33.63 -17 13 54.5 V 474
2019-01-30 12:24:27 C 08 47 33.61 -17 13 41.6 V 474
2019-01-30 12:25:54 C 08 47 33.58 -17 13 28.5 V 474
2019-01-30 12:29:17 C 08 47 33.55 -17 12 58.7 V 474
2019-01-30 12:30:44 C 08 47 33.51 -17 12 46.1 V 474
2019-01-30 14:45:59 C 08 47 31.48 -16 52 47.7 q E94
2019-01-30 15:08:09 C 08 47 31.22 -16 49 31.0 q E94
2019-01-30 15:19:16 C 08 47 31.11 -16 47 52.9 q E94
2019-01-30 15:30:23 C 08 47 30.99 -16 46 14.5 q E94
2019-01-30 23:35:42 C 08 47 32.81 -15 36 47.3 t K33
2019-01-30 23:43:38 C 08 47 33.09 -15 35 42.0 V J95
2019-01-30 23:47:35 C 08 47 33.03 -15 35 08.0 V J95
2019-01-30 23:51:38 C 08 47 32.99 -15 34 33.0 V J95
2019-01-30 23:52:31 C 08 47 32.54 -15 34 22.8 t K33
2019-01-30 23:55:19 C 08 47 32.97 -15 34 01.3 V J95
2019-01-31 00:08:47 C 08 47 32.34 -15 32 00.7 t K33
2019-01-31 00:29:21 C 08 47 32.20 -15 29 04.6 t K33
2019-01-31 00:56:25 C 08 47 32.25 -15 25 15.1 V Z99
2019-01-31 01:00:30 C 08 47 32.21 -15 24 39.8 V Z99
2019-01-31 01:04:41 C 08 47 32.19 -15 24 03.7 V Z99
2019-01-31 02:55:07 C 08 47 33.99 -15 07 06.7 q I47
2019-01-31 03:07:04 C 08 47 33.82 -15 05 25.1 q I47
2019-01-31 03:19:16 C 08 47 33.67 -15 03 41.2 q I47
2019-01-31 07:41:05 C 08 47 32.29 -14 27 32.4 o 691
2019-01-31 07:49:46 C 08 47 32.17 -14 26 19.0 o 691
2019-01-31 07:58:10 C 08 47 32.05 -14 25 07.7 o 691
2019-02-02 10:43:48 C 08 47 30.47 -07 46 05.4 V T08
2019-02-02 10:56:47 C 08 47 30.27 -07 44 31.3 V T08
2019-02-02 11:08:53 C 08 47 30.14 -07 43 03.3 V T08
2019-02-02 11:21:54 C 08 47 29.96 -07 41 28.2 V T08
2019-02-02 13:32:00 C 08 47 32.53 -07 25 03.1 V 323
2019-02-02 13:55:38 C 08 47 32.26 -07 22 13.3 V 323
2019-02-02 14:10:39 C 08 47 32.15 -07 20 25.5 V 323
2019-02-02 14:23:21 C 08 47 31.98 -07 18 54.1 V 323
2019-02-03 13:01:31 C 08 47 32.70 -04 41 45.9 V 323
2019-02-03 13:06:39 C 08 47 32.67 -04 41 10.2 V 323
2019-02-03 13:12:19 C 08 47 32.62 -04 40 33.2 V 323
2019-02-03 13:27:51 C 08 47 32.46 -04 38 50.0 V 323
2019-02-03 13:33:26 C 08 47 32.39 -04 38 12.8 V 323
2019-02-04 09:08:33 C 08 47 32.061 -02 32 02.98 U F52
2019-02-04 09:25:19 C 08 47 31.875 -02 30 17.97 U F52
2019-02-04 09:42:08 C 08 47 31.683 -02 28 32.52 U F52
2019-02-04 09:58:56 C 08 47 31.490 -02 26 47.58 U F52
2019-02-04 11:03:24 C 08 47 30.75 -02 20 05.3 V T05
2019-02-04 11:16:06 C 08 47 30.61 -02 18 45.8 V T05
2019-02-04 11:28:15 C 08 47 30.48 -02 17 30.2 V T05