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
2019-02-23 15:43:24 C 08 51 13.86 +22 14 41.6 q D29
2019-02-28 05:40:07 C 08 53 16.66 +24 26 41.4 V 703
2019-02-28 05:47:52 C 08 53 16.75 +24 26 50.1 V 703
2019-02-28 05:55:35 C 08 53 16.90 +24 26 58.3 V 703
2019-02-28 06:03:16 C 08 53 17.00 +24 27 04.8 V 703
2019-03-06 04:37:19 C 08 56 36.78 +26 23 42.5 V G96
2019-03-06 04:44:57 C 08 56 36.98 +26 23 47.6 V G96
2019-03-06 04:52:35 C 08 56 37.06 +26 23 53.1 V G96
2019-03-06 05:00:13 C 08 56 37.27 +26 23 57.4 V G96
2019-03-26 01:26:10 C 09 12 40.85 +28 46 37.4 u H21
2019-03-26 01:41:00 C 09 12 41.48 +28 46 39.3 u H21
2022-03-01 02:49:00 C 04 38 56.44 +12 45 53.8 V G96
2022-03-01 02:57:08 C 04 38 58.67 +12 46 11.8 V G96
2022-03-01 03:12:37 C 04 39 02.95 +12 46 46.5 V G96
2022-03-01 03:20:44 C 04 39 05.23 +12 47 04.7 V G96