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
2001-11-20 11:42:04 C 10 39 22.06 +55 54 19.3 o 645
2001-11-20 11:43:16 C 10 39 22.19 +55 54 18.1 o 645
2001-11-20 11:46:51 C 10 39 22.59 +55 54 14.4 o 645
2012-06-19 05:37:43 C 17 04 23.98 -23 19 10.3 17.4 c 704
2012-06-19 05:52:29 C 17 04 19.22 -23 17 23.6 17.7 c 704
2012-06-19 06:07:18 C 17 04 14.35 -23 15 36.8 17.7 c 704
2012-06-19 06:22:33 C 17 04 09.48 -23 13 46.0 17.7 c 704
2012-06-20 03:50:24 C 16 57 49.32 -20 45 13.4 o G48
2012-06-20 03:51:00 C 16 57 49.16 -20 45 09.5 o G48
2012-06-20 03:51:35 C 16 57 48.99 -20 45 05.7 o G48
2012-06-20 05:05:47 C 16 57 27.81 -20 36 58.2 c H06
2012-06-20 05:09:49 C 16 57 26.70 -20 36 31.4 c H06
2012-06-20 05:10:25 C 16 57 26.57 -20 36 26.7 17.5 c 704
2012-06-20 05:13:50 C 16 57 25.54 -20 36 03.8 c H06
2012-06-20 05:33:52 C 16 57 19.36 -20 33 53.9 t H21
2012-06-20 05:40:07 C 16 57 18.18 -20 33 10.7 18.1 c 704
2012-06-20 05:41:48 C 16 57 17.13 -20 33 02.0 t H21
2012-06-20 05:45:35 C 16 57 16.06 -20 32 37.0 t H21
2012-06-20 05:50:25 C 16 57 14.70 -20 32 05.0 r H21
2012-06-20 05:54:25 C 16 57 13.57 -20 31 38.7 r H21
2012-06-20 05:54:50 C 16 57 14.00 -20 31 33.8 17.8 c 704
2012-06-20 05:58:35 C 16 57 12.40 -20 31 11.1 r H21
2012-06-20 06:09:33 C 16 57 09.89 -20 29 58.4 17.7 c 704
2012-06-20 21:15:53 C 16 53 13.56 -18 53 40.2 v J04
2012-06-20 21:17:51 C 16 53 13.05 -18 53 28.2 v J04
2012-06-20 21:19:48 C 16 53 12.55 -18 53 16.2 v J04
2012-06-20 21:24:23 C 16 53 10.57 -18 52 54.8 t 204
2012-06-20 21:28:59 C 16 53 09.38 -18 52 26.5 t 204
2012-06-20 21:33:46 C 16 53 08.17 -18 51 56.6 t 204
2012-06-20 21:38:45 C 16 53 06.88 -18 51 26.0 t 204
2012-06-20 21:43:47 C 16 53 05.59 -18 50 55.4 t 204
2012-06-20 22:41:44 C 16 52 50.99 -18 44 56.3 r I89
2012-06-20 22:43:50 C 16 52 50.45 -18 44 43.1 r I89
2012-06-20 22:45:56 C 16 52 49.91 -18 44 30.3 r I89
2012-06-20 22:46:13 C 16 52 51.48 -18 43 53.2 u 807
2012-06-20 22:59:23 C 16 52 48.17 -18 42 33.2 u 807
2012-06-21 05:08:03 C 16 51 16.88 -18 05 54.8 17.5 c 704
2012-06-21 05:08:13 C 16 51 16.86 -18 05 53.6 17.0 c 704
2012-06-21 05:08:35 C 16 51 16.80 -18 05 51.3 17.2 c 704
2012-06-21 05:23:20 C 16 51 13.11 -18 04 23.6 17.7 c 704
2012-06-21 05:23:30 C 16 51 13.05 -18 04 22.3 17.3 c 704
2012-06-21 05:23:52 C 16 51 13.02 -18 04 20.0 17.6 c 704
2012-06-21 05:26:12 C 16 51 11.90 -18 04 08.1 r H21
2012-06-21 05:28:28 C 16 51 11.87 -18 03 52.8 o H01
2012-06-21 05:31:33 C 16 51 10.59 -18 03 36.2 r H21
2012-06-21 05:36:19 C 16 51 09.42 -18 03 07.5 r H21
2012-06-21 05:37:59 C 16 51 09.54 -18 02 56.0 17.6 c 704
2012-06-21 05:38:11 C 16 51 09.50 -18 02 55.0 17.3 c 704
2012-06-21 05:38:31 C 16 51 09.40 -18 02 52.8 17.4 c 704
2012-06-21 05:40:14 C 16 51 08.45 -18 02 44.1 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)