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
2012-06-25 06:27:58 C 16 33 06.64 -10 07 54.9 u H45
2012-06-26 03:23:48 C 16 30 16.33 -08 48 10.8 u H21
2012-06-26 03:29:31 C 16 30 15.57 -08 47 49.9 u H21
2012-06-26 03:34:23 C 16 30 14.92 -08 47 32.2 u H21
2012-06-26 03:39:06 C 16 30 14.28 -08 47 15.0 u H21
2012-06-26 06:11:52 C 16 29 53.96 -08 37 59.7 u H45
2012-06-26 06:13:03 C 16 29 53.82 -08 37 55.2 u H45
2012-06-26 06:27:20 C 16 29 51.94 -08 37 04.0 u H45
2012-06-26 06:29:08 C 16 29 51.71 -08 36 57.3 u H45
2012-06-26 06:30:49 C 16 29 51.49 -08 36 51.1 u H45
2012-06-26 06:34:24 C 16 29 50.99 -08 36 38.7 u H45
2012-06-26 06:36:45 C 16 29 50.70 -08 36 29.2 u H45
2012-06-27 05:41:27 C 16 27 03.97 -07 17 12.9 u H21
2012-06-27 05:45:55 C 16 27 03.44 -07 16 58.4 u H21
2012-06-27 05:50:15 C 16 27 02.94 -07 16 44.0 u H21
2012-06-27 05:54:35 C 16 27 02.42 -07 16 29.8 u H21
2012-06-27 06:11:32 C 16 27 00.47 -07 15 33.6 u H45
2012-06-27 06:12:58 C 16 27 00.28 -07 15 28.9 u H45
2012-06-27 06:15:03 C 16 27 00.08 -07 15 21.4 u H45
2012-06-27 06:17:08 C 16 26 59.79 -07 15 14.6 u H45
2012-06-27 06:19:54 C 16 26 59.49 -07 15 05.7 u H45
2012-06-27 06:21:13 C 16 26 59.32 -07 15 00.8 u H45
2012-06-28 02:32:23 C 16 24 49.12 -06 11 39.1 u H21
2012-06-28 02:36:07 C 16 24 48.70 -06 11 27.9 u H21
2012-06-28 02:39:40 C 16 24 48.30 -06 11 17.0 u H21
2012-06-28 02:46:09 C 16 24 47.62 -06 10 57.4 u H21
2012-06-28 02:49:07 C 16 24 47.29 -06 10 48.5 u H21
2012-06-28 02:51:54 C 16 24 47.01 -06 10 40.4 u H21
2012-06-28 06:00:52 C 16 24 26.84 -06 01 14.4 u H45
2012-06-28 06:02:58 C 16 24 26.66 -06 01 08.1 u H45
2012-06-28 06:04:19 C 16 24 26.50 -06 01 04.3 u H45
2012-06-28 06:06:32 C 16 24 26.29 -06 00 56.6 u H45
2012-06-28 06:07:54 C 16 24 26.11 -06 00 53.8 u H45
2012-06-28 06:09:49 C 16 24 25.89 -06 00 47.1 u H45
2012-06-28 06:11:07 C 16 24 25.73 -06 00 43.5 u H45
2012-06-29 04:20:15 C 16 22 18.08 -04 57 43.9 u H21
2012-06-29 04:29:41 C 16 22 17.19 -04 57 18.4 u H21
2012-06-29 04:39:18 C 16 22 16.28 -04 56 51.9 u H21
2012-06-29 05:22:23 C 16 22 12.17 -04 54 52.7 u H45
2012-06-29 05:24:44 C 16 22 12.00 -04 54 47.9 u H45
2012-06-29 05:26:07 C 16 22 11.83 -04 54 44.2 u H45
2012-06-29 05:28:48 C 16 22 11.58 -04 54 36.2 u H45
2012-06-29 05:30:06 C 16 22 11.49 -04 54 32.0 u H45
2012-06-29 05:31:29 C 16 22 11.31 -04 54 29.6 u H45
2012-06-30 05:07:15 C 16 20 09.42 -03 53 24.4 u H21
2012-06-30 05:21:57 C 16 20 08.17 -03 52 47.9 u H21
2012-06-30 05:28:05 C 16 20 07.65 -03 52 32.7 u H21
2012-06-30 06:08:42 C 16 20 04.19 -03 50 52.3 u H21
2012-06-30 06:20:52 C 16 20 03.17 -03 50 21.9 u H21
2012-06-30 06:28:58 C 16 20 02.49 -03 50 02.2 u 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)