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
2012-06-22 07:45:35 C 16 45 21.50 -15 34 40.3 r E94
2012-06-22 07:51:10 C 16 45 20.31 -15 34 10.4 r E94
2012-06-22 07:56:43 C 16 45 19.13 -15 33 41.2 r E94
2012-06-22 08:04:50 C 16 45 17.43 -15 32 57.5 r E94
2012-06-22 08:11:04 C 16 45 16.11 -15 32 24.7 r E94
2012-06-22 08:23:33 C 16 45 13.46 -15 31 18.1 r E94
2012-06-22 08:29:47 C 16 45 12.17 -15 30 45.6 r E94
2012-06-22 08:36:00 C 16 45 10.83 -15 30 11.6 r E94
2012-06-22 08:42:13 C 16 45 09.50 -15 29 38.3 r E94
2012-06-22 08:45:20 C 16 45 08.84 -15 29 21.8 r E94
2012-06-22 10:20:45 C 16 44 49.63 -15 20 56.9 u D90
2012-06-22 10:27:08 C 16 44 48.30 -15 20 23.6 u D90
2012-06-22 10:33:31 C 16 44 46.97 -15 19 49.7 u D90
2012-06-23 05:04:32 C 16 41 10.58 -13 46 08.9 18.3 c 704
2012-06-23 05:10:54 C 16 41 08.90 -13 45 38.5 u H21
2012-06-23 05:13:28 C 16 41 08.41 -13 45 26.0 u H21
2012-06-23 05:19:26 C 16 41 07.73 -13 44 55.5 18.6 c 704
2012-06-23 05:21:01 C 16 41 06.99 -13 44 49.1 u H21
2012-06-23 05:23:31 C 16 41 06.49 -13 44 36.7 u H21
2012-06-23 05:34:10 C 16 41 04.89 -13 43 44.0 18.2 c 704
2012-06-23 05:48:46 C 16 41 02.14 -13 42 32.8 18.4 c 704
2012-06-23 06:03:30 C 16 40 59.35 -13 41 20.0 18.3 c 704
2012-06-23 06:17:05 C 16 40 56.85 -13 40 13.5 r 703
2012-06-23 06:26:53 C 16 40 54.98 -13 39 26.5 r 703
2012-06-23 06:36:44 C 16 40 53.14 -13 38 39.9 r 703
2012-06-23 06:46:37 C 16 40 51.24 -13 37 50.0 r 703
2012-06-23 07:51:08 C 16 40 39.07 -13 32 36.8 r G96
2012-06-23 07:52:59 C 16 40 38.74 -13 32 27.9 r G96
2012-06-23 07:54:47 C 16 40 38.38 -13 32 18.9 r G96
2012-06-23 07:56:36 C 16 40 38.02 -13 32 10.2 r G96
2012-06-23 21:02:26 C 16 38 20.79 -12 30 38.2 u 157
2012-06-23 21:05:10 C 16 38 20.34 -12 30 25.5 u 157
2012-06-23 21:07:54 C 16 38 19.84 -12 30 13.2 u 157
2012-06-24 06:12:46 C 16 36 48.70 -11 49 26.3 u H45
2012-06-24 06:14:37 C 16 36 48.44 -11 49 18.3 u H45
2012-06-24 06:15:43 C 16 36 48.20 -11 49 13.6 u H45
2012-06-24 06:17:17 C 16 36 47.96 -11 49 06.7 u H45
2012-06-24 06:18:30 C 16 36 47.76 -11 49 00.9 u H45
2012-06-24 06:19:58 C 16 36 47.50 -11 48 54.5 u H45
2012-06-24 06:21:12 C 16 36 47.32 -11 48 49.6 u H45
2012-06-24 06:22:28 C 16 36 47.10 -11 48 43.5 u H45
2012-06-25 06:15:46 C 16 33 08.45 -10 08 43.9 u H45
2012-06-25 06:16:43 C 16 33 08.32 -10 08 39.4 u H45
2012-06-25 06:18:11 C 16 33 08.09 -10 08 33.8 u H45
2012-06-25 06:20:00 C 16 33 07.82 -10 08 26.3 u H45
2012-06-25 06:21:35 C 16 33 07.60 -10 08 20.1 u H45
2012-06-25 06:22:58 C 16 33 07.37 -10 08 15.0 u H45
2012-06-25 06:24:28 C 16 33 07.19 -10 08 08.7 u H45
2012-06-25 06:25:14 C 16 33 07.06 -10 08 05.9 u H45
2012-06-25 06:26:36 C 16 33 06.85 -10 08 00.3 u H45
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)