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
2012-07-05 03:00:48 C 16 12 44.85 +00 02 36.2 u 807
2012-07-05 03:04:56 C 16 12 44.65 +00 02 42.8 u 807
2012-07-05 03:08:30 C 16 12 44.46 +00 02 48.4 u 807
2012-07-05 03:12:02 C 16 12 44.28 +00 02 54.1 u 807
2012-07-05 03:16:04 C 16 12 44.08 +00 03 00.7 u 807
2012-07-05 03:37:09 C 16 12 43.28 +00 03 16.9 u H21
2012-07-05 03:44:48 C 16 12 42.89 +00 03 29.3 u H21
2012-07-05 03:52:46 C 16 12 42.47 +00 03 42.0 u H21
2012-07-05 04:01:29 C 16 12 42.06 +00 03 55.5 u H21
2012-07-07 06:07:09 C 16 10 36.50 +01 17 10.8 u H21
2012-07-07 06:16:13 C 16 10 36.18 +01 17 22.9 u H21
2012-07-07 06:24:49 C 16 10 35.85 +01 17 34.3 u H21
2012-07-07 07:07:37 C 16 10 34.52 +01 18 32.1 t G58
2012-07-07 07:18:29 C 16 10 34.09 +01 18 46.6 t G58
2012-07-07 07:27:39 C 16 10 33.73 +01 18 58.7 t G58
2012-07-08 06:17:37 C 16 09 45.99 +01 48 07.9 u H21
2012-07-08 06:28:01 C 16 09 45.64 +01 48 20.8 u H21
2012-07-08 06:36:28 C 16 09 45.34 +01 48 31.4 u H21
2012-07-10 05:09:10 C 16 08 26.28 +02 41 35.9 u H21
2012-07-10 05:16:56 C 16 08 26.05 +02 41 43.9 u H21
2012-07-10 05:24:43 C 16 08 25.83 +02 41 52.4 u H21
2012-07-10 23:04:43 C 16 08 00.78 +02 59 52.3 t 204
2012-07-10 23:34:44 C 16 08 00.06 +03 00 22.5 t 204
2012-07-11 05:06:54 C 16 07 52.83 +03 05 48.6 t H21
2012-07-11 05:17:20 C 16 07 52.56 +03 05 58.9 t H21
2012-07-11 05:27:48 C 16 07 52.32 +03 06 08.9 t H21
2012-07-12 05:31:35 C 16 07 23.50 +03 28 34.1 u H21
2012-07-12 05:43:24 C 16 07 23.22 +03 28 44.7 u H21
2012-07-14 03:27:08 C 16 06 40.65 +04 06 43.3 u H21
2012-07-14 03:36:40 C 16 06 40.49 +04 06 50.3 u H21
2012-07-14 03:45:30 C 16 06 40.38 +04 06 57.3 u H21
2012-07-16 04:49:58 C 16 06 09.67 +04 41 49.0 t H21
2012-07-16 05:01:38 C 16 06 09.60 +04 41 56.7 t H21
2012-07-19 22:41:31 C 16 05 49.27 +05 32 50.5 t J04
2012-07-19 22:50:26 C 16 05 49.25 +05 32 55.1 t J04
2012-07-19 22:59:21 C 16 05 49.21 +05 32 59.5 t J04
2012-07-20 03:39:57 C 16 05 49.30 +05 35 13.8 u H21
2012-07-20 03:54:28 C 16 05 49.30 +05 35 20.6 u H21
2012-07-20 04:09:20 C 16 05 49.27 +05 35 27.5 u H21
2012-08-08 02:16:53 C 16 11 57.05 +07 23 56.4 u H21
2012-08-08 02:36:18 C 16 11 57.50 +07 23 58.7 u H21
2012-08-08 02:51:50 C 16 11 57.82 +07 24 00.4 u H21
2014-10-22 05:12:55 C 19 12 23.632 +66 23 58.59 t 568
2014-10-22 05:51:40 C 19 12 24.835 +66 23 35.95 t 568
2014-10-28 05:29:54 C 19 17 51.639 +65 00 52.72 t 568
2014-10-28 07:00:33 C 19 17 55.394 +65 00 00.12 t 568
2014-10-29 05:26:03 C 19 18 54.119 +64 47 11.66 t 568
2014-10-29 07:10:23 C 19 18 58.603 +64 46 11.26 t 568
2018-10-27 10:22:52 C 09 42 29.26 +68 38 23.2 o 291
2018-10-27 10:35:21 C 09 42 30.53 +68 38 24.0 o 291
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)