531277 (2012 MM11)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6481452183 ± 5.37e-09
Semi-major axis (a)2.1135617867 AU ± 6.70e-10
Inclination (i)3.18436077° ± 1.68e-06
Long. of Asc. Node (Ω)245.40424402° ± 2.99e-05
Arg. of Perihelion (ω)124.24761995° ± 2.99e-05
Mean Anomaly (M)109.70832634° ± 2.11e-06
Mean Motion (n)0.3207671266°/day ± 1.53e-10
Perihelion dist (q)0.74366682 AU ± 1.14e-08
Aphelion dist (Q)3.48345675 AU ± 1.14e-08
Orbital Period3.07271600 yr ± 1.46e-09
Physical Parameters
H (abs. magnitude)20.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.277″
Uncertainty0
Orbit TypeApollo
MOID0.011457 AU
Observations Used511
Radar Obs Used3
Oppositions1
Arc Total2012-2022
First Observation Used2012-06-24
Last Observation Used2022-02-03
Observations (556)
Date Type RA Dec Mag Band Observatory
2012-07-19 01:48:22 C 00 38 00.11 +62 43 53.7 c A24
2012-07-19 01:49:07 C 00 38 02.61 +62 44 00.1 c A24
2012-07-21 09:01:09 C 03 35 02.55 +62 38 47.8 u H21
2012-07-21 09:03:02 C 03 35 07.09 +62 38 36.8 u H21
2012-07-21 09:06:47 C 03 35 16.15 +62 38 15.0 u H21
2012-07-21 09:08:40 C 03 35 20.69 +62 38 04.3 u H21
2012-07-21 09:18:06 C 03 35 43.26 +62 37 09.5 u H21
2012-07-21 09:19:27 C 03 35 46.52 +62 37 01.6 u H21
2012-07-23 01:20:50 C 04 48 33.65 +57 42 52.0 u J95
2012-07-23 01:34:40 C 04 48 52.12 +57 41 07.4 u J95
2012-07-23 01:42:45 C 04 49 02.77 +57 40 08.2 u J95
2012-07-23 09:05:53 C 04 58 17.35 +56 44 09.1 u H21
2012-07-23 09:14:22 C 04 58 27.35 +56 43 07.2 u H21
2012-07-23 09:18:25 C 04 58 32.08 +56 42 37.7 u H21
2012-07-23 09:23:17 C 04 58 37.76 +56 42 01.7 u H21
2012-07-24 01:19:39 C 05 15 21.65 +54 42 59.9 u J95
2012-07-24 01:49:29 C 05 15 49.98 +54 39 30.1 u J95
2012-07-24 02:19:40 C 05 16 18.44 +54 36 00.2 u J95
2013-01-15 07:51:50 C 09 57 27.57 +06 35 13.1 u H21
2013-01-15 08:19:08 C 09 57 25.63 +06 35 21.1 u H21
2013-01-15 08:48:34 C 09 57 23.53 +06 35 29.5 u H21
2013-02-03 08:18:08 C 09 23 48.290 +09 12 00.43 L F51
2013-02-03 08:39:12 C 09 23 46.701 +09 12 08.52 L F51
2013-02-03 09:00:24 C 09 23 45.124 +09 12 16.11 L F51
2013-02-03 09:21:26 C 09 23 43.524 +09 12 23.63 L F51
2015-06-07 06:59:37 C 16 54 17.42 -21 15 45.9 o 926
2015-06-07 07:15:09 C 16 54 16.01 -21 15 42.0 q G96
2015-06-07 07:17:31 C 16 54 15.73 -21 15 40.8 o 926
2015-06-07 07:22:41 C 16 54 15.28 -21 15 39.2 q G96
2015-06-07 07:30:14 C 16 54 14.55 -21 15 37.2 q G96
2015-06-07 07:34:36 C 16 54 14.18 -21 15 35.5 o 926
2015-06-07 07:37:47 C 16 54 13.89 -21 15 34.7 q G96
2015-06-11 08:48:56 C 16 45 17.177 -20 43 26.13 L F51
2015-06-11 09:06:21 C 16 45 15.422 -20 43 19.94 L F51
2015-06-11 09:23:43 C 16 45 13.677 -20 43 13.88 L F51
2015-06-11 09:41:08 C 16 45 11.925 -20 43 07.71 L F51
2015-06-21 05:52:59 C 16 20 32.82 -19 05 12.0 q G96
2015-06-21 05:59:44 C 16 20 32.04 -19 05 09.3 q G96
2015-06-21 06:06:31 C 16 20 31.28 -19 05 05.5 q G96
2015-06-21 06:13:15 C 16 20 30.52 -19 05 03.0 q G96
2015-07-20 01:42:29 C 15 09 25.59 -12 43 28.5 u 807
2015-07-20 01:50:07 C 15 09 24.92 -12 43 24.4 u 807
2015-07-20 01:57:47 C 15 09 24.27 -12 43 19.9 u 807
2015-12-09 14:39:11 C 10 09 43.496 +07 00 43.84 L F51
2015-12-09 14:52:41 C 10 09 42.988 +07 00 43.30 L F51
2015-12-09 15:06:13 C 10 09 42.483 +07 00 42.78 L F51
2015-12-09 15:19:49 C 10 09 42.003 +07 00 42.44 L F51
2015-12-21 11:21:16 C 09 56 18.84 +07 14 54.3 q G96
2015-12-21 11:28:37 C 09 56 18.42 +07 14 55.1 q G96
2015-12-21 11:43:20 C 09 56 17.44 +07 14 57.0 q G96
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2012-07-13 05:20:00 180453.5456 0.5 Hz 2380 -1 -1
2012-07-13 05:37:00 69156556.02 4 us 2380 -1 -1
2012-07-13 06:10:00 69007705.6 0.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)