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
2019-02-05 01:33:40 C 08 47 31.59 -00 51 53.6 V G40
2019-02-05 01:48:20 C 08 47 31.45 -00 50 26.2 V G40
2019-02-05 02:03:21 C 08 47 31.31 -00 48 57.2 V G40
2019-02-05 02:33:31 C 08 47 31.01 -00 45 58.6 V G40
2019-02-06 10:46:44 C 08 47 34.32 +02 15 02.6 V T08
2019-02-06 10:59:35 C 08 47 34.23 +02 16 11.4 V T08
2019-02-06 11:11:44 C 08 47 34.11 +02 17 15.9 V T08
2019-02-06 11:24:37 C 08 47 33.95 +02 18 24.3 V T08
2019-02-06 22:11:57 C 08 47 36.51 +03 14 21.1 V B67
2019-02-06 22:19:49 C 08 47 36.47 +03 15 01.4 V B67
2019-02-06 22:27:40 C 08 47 36.43 +03 15 41.3 V B67
2019-02-07 15:03:41 C 08 47 38.97 +04 39 04.5 V 323
2019-02-07 15:05:14 C 08 47 38.98 +04 39 11.9 V 323
2019-02-08 13:00:35 C 08 47 43.81 +06 21 18.4 V 323
2019-02-08 13:04:13 C 08 47 43.78 +06 21 34.9 V 323
2019-02-08 13:18:50 C 08 47 43.75 +06 22 41.2 V 323
2019-02-08 13:22:38 C 08 47 43.70 +06 22 57.2 V 323
2019-02-09 00:15:24 C 08 47 44.14 +07 10 06.6 q C95
2019-02-09 00:16:47 C 08 47 44.18 +07 10 12.4 q C95
2019-02-09 00:18:11 C 08 47 44.15 +07 10 18.2 q C95
2019-02-09 00:19:35 C 08 47 44.15 +07 10 24.1 q C95
2019-02-09 13:03:50 C 08 47 48.95 +08 05 01.6 V 323
2019-02-09 13:07:27 C 08 47 48.94 +08 05 16.5 V 323
2019-02-09 14:34:39 C 08 47 48.61 +08 11 17.1 V 323
2019-02-10 19:52:40 C 08 47 57.13 +10 05 27.7 V Z80
2019-02-10 19:59:15 C 08 47 57.14 +10 05 51.7 V Z80
2019-02-10 20:05:54 C 08 47 57.11 +10 06 16.2 V Z80
2019-02-11 06:08:18 C 08 47 59.52 +10 43 19.4 V G96
2019-02-11 06:16:24 C 08 47 59.49 +10 43 49.0 V G96
2019-02-11 06:24:30 C 08 47 59.46 +10 44 17.9 V G96
2019-02-11 06:32:36 C 08 47 59.45 +10 44 47.1 V G96
2019-02-11 12:56:58 C 08 48 02.70 +11 08 11.8 V 323
2019-02-11 13:00:35 C 08 48 02.70 +11 08 24.5 V 323
2019-02-11 13:19:25 C 08 48 02.66 +11 09 31.2 V 323
2019-02-11 14:00:29 C 08 48 02.60 +11 11 56.1 V 323
2019-02-11 22:44:36 C 08 48 04.87 +11 41 32.1 V 204
2019-02-11 22:47:30 C 08 48 04.88 +11 41 41.8 V 204
2019-02-11 22:50:26 C 08 48 04.89 +11 41 52.0 V 204
2019-02-12 12:55:03 C 08 48 11.32 +12 29 29.5 V 323
2019-02-12 13:15:24 C 08 48 11.38 +12 30 35.3 V 323
2019-02-13 21:56:58 C 08 48 24.50 +14 10 57.6 q 160
2019-02-13 22:00:42 C 08 48 24.49 +14 11 08.1 q 160
2019-02-13 22:04:25 C 08 48 24.46 +14 11 19.4 q 160
2019-02-14 22:27:39 C 08 48 36.27 +15 19 56.3 q 160
2019-02-14 22:31:26 C 08 48 36.29 +15 20 06.5 q 160
2019-02-14 22:35:16 C 08 48 36.28 +15 20 16.8 q 160
2019-02-15 22:40:08 C 08 48 49.41 +16 22 55.8 q 160
2019-02-15 22:43:28 C 08 48 49.43 +16 23 04.3 q 160
2019-02-15 22:46:49 C 08 48 49.41 +16 23 12.9 q 160
2019-02-23 15:23:03 C 08 51 13.58 +22 14 13.2 q D29