2012 MS4

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7209344028 ± 1.36e-08
Semi-major axis (a)2.2643719625 AU ± 5.89e-09
Inclination (i)67.68064931° ± 1.51e-05
Long. of Asc. Node (Ω)265.86202762° ± 1.34e-06
Arg. of Perihelion (ω)257.52911529° ± 3.47e-06
Mean Anomaly (M)358.80308803° ± 3.18e-06
Mean Motion (n)0.2892614927°/day ± 1.13e-09
Perihelion dist (q)0.63190831 AU ± 3.09e-08
Aphelion dist (Q)3.89683561 AU ± 3.25e-08
Orbital Period3.40738850 yr ± 1.33e-08
Physical Parameters
H (abs. magnitude)18.68
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.306″
Uncertainty0
Orbit TypeApollo
MOID0.036702 AU
Observations Used253
Radar Obs Used3
Oppositions12
Arc Total2001-2019
First Observation Used2001-11-20
Last Observation Used2019-07-13
Observations (277)
Date Type RA Dec Mag Band Observatory
2012-06-21 05:45:10 C 16 51 07.90 -18 02 12.6 o 291
2012-06-21 05:45:15 C 16 51 07.74 -18 02 12.9 o H01
2012-06-21 05:45:37 C 16 51 07.78 -18 02 09.9 o 291
2012-06-21 05:46:03 C 16 51 07.68 -18 02 07.3 o 291
2012-06-21 05:52:03 C 16 51 06.07 -18 01 32.4 o H01
2012-06-21 05:52:35 C 16 51 05.93 -18 01 29.0 17.6 c 704
2012-06-21 05:52:45 C 16 51 05.89 -18 01 27.8 17.2 c 704
2012-06-21 05:53:07 C 16 51 05.81 -18 01 25.3 17.4 c 704
2012-06-21 05:59:20 C 16 51 04.27 -18 00 49.0 o H01
2012-06-21 06:07:20 C 16 51 02.34 -18 00 01.5 17.5 c 704
2012-06-21 06:07:31 C 16 51 02.26 -18 00 00.0 17.2 c 704
2012-06-21 06:07:51 C 16 51 02.22 -17 59 57.8 17.6 c 704
2012-06-21 06:45:21 C 16 50 53.08 -17 56 13.9 c 854
2012-06-21 06:48:33 C 16 50 52.26 -17 55 55.4 c 854
2012-06-21 11:27:50 C 16 49 47.59 -17 28 03.1 o E23
2012-06-21 11:32:30 C 16 49 46.47 -17 27 36.5 o E23
2012-06-21 11:37:57 C 16 49 45.23 -17 27 04.7 o E23
2012-06-21 11:48:46 C 16 49 42.62 -17 26 01.3 o E23
2012-06-21 11:56:00 C 16 49 40.92 -17 25 20.3 o E23
2012-06-21 12:02:49 C 16 49 39.32 -17 24 40.2 o E23
2012-06-21 21:03:23 C 16 47 37.60 -16 33 52.1 u 595
2012-06-21 21:13:07 C 16 47 35.72 -16 32 56.1 v I93
2012-06-21 21:13:12 C 16 47 35.44 -16 32 56.8 u 595
2012-06-21 21:20:58 C 16 47 33.97 -16 32 11.9 v I93
2012-06-21 21:33:31 C 16 47 31.15 -16 31 02.0 v I93
2012-06-21 21:46:13 C 16 47 28.30 -16 29 51.3 v I93
2012-06-21 22:55:45 C 16 47 14.35 -16 22 49.5 u 807
2012-06-21 22:59:06 C 16 47 13.61 -16 22 31.4 u 807
2012-06-21 23:05:47 C 16 47 12.14 -16 21 54.5 u 807
2012-06-21 23:09:09 C 16 47 11.40 -16 21 35.7 u 807
2012-06-21 23:12:28 C 16 47 10.68 -16 21 17.4 u 807
2012-06-21 23:15:38 C 16 47 09.98 -16 21 00.1 u 807
2012-06-22 00:22:26 C 16 46 54.95 -16 14 48.9 u I39
2012-06-22 00:31:11 C 16 46 52.96 -16 14 02.3 u I39
2012-06-22 01:02:40 C 16 46 45.97 -16 11 09.2 u I39
2012-06-22 01:13:00 C 16 46 43.74 -16 10 13.9 u I39
2012-06-22 01:24:31 C 16 46 41.32 -16 09 09.1 u I39
2012-06-22 01:25:00 C 16 46 41.23 -16 09 07.9 u I20
2012-06-22 01:27:31 C 16 46 39.40 -16 09 21.8 o 954
2012-06-22 01:42:34 C 16 46 36.02 -16 07 57.7 o 954
2012-06-22 01:49:00 C 16 46 35.96 -16 06 56.4 u I20
2012-06-22 01:54:38 C 16 46 33.33 -16 06 51.3 o 954
2012-06-22 05:17:10 C 16 45 51.31 -15 48 33.1 u H36
2012-06-22 05:18:29 C 16 45 51.03 -15 48 26.1 u H36
2012-06-22 05:20:24 C 16 45 50.61 -15 48 15.7 u H36
2012-06-22 05:21:56 C 16 45 50.09 -15 48 07.8 r H21
2012-06-22 05:24:38 C 16 45 49.51 -15 47 53.2 r H21
2012-06-22 05:25:41 C 16 45 49.45 -15 47 47.2 u H36
2012-06-22 05:27:20 C 16 45 48.92 -15 47 38.6 r H21
2012-06-22 05:29:04 C 16 45 48.55 -15 47 29.2 r H21
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2018-12-20 19:45:00 17346.6998 0.2 Hz 2380 -1 -1
2018-12-20 20:20:00 81684619.86 4 us 2380 -1 -1
2018-12-20 20:34:00 81680645.37 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)