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
2018-10-27 10:47:50 C 09 42 31.74 +68 38 24.6 o 291
2018-11-28 11:13:11 C 10 54 18.35 +72 53 46.9 U I41
2018-11-28 11:17:13 C 10 54 18.71 +72 53 51.1 U I41
2018-11-28 12:44:13 C 10 54 26.95 +72 55 18.1 U I41
2018-11-28 12:45:31 C 10 54 27.09 +72 55 19.4 U I41
2018-12-11 19:39:03 C 13 07 49.02 +84 33 08.4 V Z80
2018-12-11 19:43:57 C 13 08 01.86 +84 33 27.9 V Z80
2018-12-14 19:39:10 C 20 00 18.48 +83 49 12.7 V 204
2018-12-14 19:40:49 C 20 00 24.82 +83 48 58.5 V 204
2018-12-14 19:43:07 C 20 00 33.61 +83 48 38.3 V 204
2018-12-14 19:45:06 C 20 00 40.90 +83 48 21.7 V 204
2018-12-14 19:47:05 C 20 00 48.39 +83 48 05.0 V 204
2018-12-17 17:36:33 C 21 51 11.38 +66 39 38.5 V C95
2018-12-17 17:39:30 C 21 51 13.05 +66 38 33.0 V C95
2018-12-17 17:42:26 C 21 51 14.78 +66 37 27.6 V C95
2018-12-18 07:17:34 S 21 58 43.092 +61 11 22.88 L C51
2018-12-20 04:52:43 C 22 14 49.76 +36 39 04.9 V T05
2018-12-20 05:04:08 C 22 14 52.35 +36 31 50.1 V T05
2018-12-20 05:17:03 C 22 14 55.31 +36 23 37.7 V T05
2019-07-09 04:33:07 C 18 00 58.04 +25 40 05.5 u H21
2019-07-09 04:41:29 C 18 00 57.32 +25 40 06.8 u H21
2019-07-09 05:07:18 C 18 00 54.84 +25 40 09.3 u H21
2019-07-13 03:12:09 C 17 52 36.43 +25 43 45.6 u H21
2019-07-13 03:38:26 C 17 52 34.20 +25 43 45.6 u H21
2019-07-21 03:41:59 C 17 38 19.83 +25 27 13.6 u H21
2019-07-21 03:59:13 C 17 38 18.71 +25 27 10.7 u H21
2019-07-21 04:08:51 C 17 38 18.07 +25 27 08.9 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)