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
2012-06-30 09:02:13 C 19 47 03.56 -09 18 02.5 u H45
2012-06-30 23:34:36 C 19 48 13.10 -08 45 01.7 u 204
2012-06-30 23:40:13 C 19 48 13.48 -08 44 48.4 u 204
2012-06-30 23:45:37 C 19 48 13.88 -08 44 35.5 u 204
2012-07-01 04:20:08 C 19 48 36.65 -08 32 45.2 u 807
2012-07-01 04:23:28 C 19 48 36.89 -08 32 37.1 u 807
2012-07-01 04:26:49 C 19 48 37.11 -08 32 29.0 u 807
2012-07-01 04:30:09 C 19 48 37.35 -08 32 21.0 u 807
2012-07-01 04:33:29 C 19 48 37.59 -08 32 13.1 u 807
2012-07-01 04:36:47 C 19 48 37.81 -08 32 05.2 u 807
2012-07-02 00:09:54 C 19 50 16.95 -07 43 51.6 v I93
2012-07-02 00:34:48 C 19 50 18.87 -07 42 46.3 v I93
2012-07-02 00:46:03 C 19 50 19.74 -07 42 16.5 v I93
2012-07-02 01:16:40 C 19 50 22.10 -07 40 55.4 v I93
2012-07-02 02:56:06 C 19 50 33.09 -07 35 29.6 u 807
2012-07-02 02:59:28 C 19 50 33.38 -07 35 20.7 u 807
2012-07-02 03:06:19 C 19 50 33.93 -07 35 02.6 u 807
2012-07-02 03:09:39 C 19 50 34.19 -07 34 53.7 u 807
2012-07-02 03:12:59 C 19 50 34.46 -07 34 44.9 u 807
2012-07-02 03:15:59 C 19 50 34.68 -07 34 37.1 u 807
2012-07-02 07:05:17 C 19 50 53.38 -07 25 17.9 u H21
2012-07-02 07:09:23 C 19 50 53.71 -07 25 06.9 u H21
2012-07-02 07:13:27 C 19 50 54.03 -07 24 55.7 u H21
2012-07-02 07:17:30 C 19 50 54.33 -07 24 44.5 u H21
2012-07-02 07:21:29 C 19 50 54.67 -07 24 33.8 u H21
2012-07-02 07:25:29 C 19 50 54.98 -07 24 22.9 u H21
2012-07-03 15:20:09 C 19 54 02.39 -05 49 13.1 u D90
2012-07-03 15:38:37 C 19 54 04.00 -05 48 13.7 u D90
2012-07-03 21:48:01 C 19 54 44.32 -05 29 25.8 u C73
2012-07-03 21:50:20 C 19 54 44.52 -05 29 19.0 u C73
2012-07-03 21:52:39 C 19 54 44.80 -05 29 10.7 u C73
2012-07-03 21:54:58 C 19 54 44.99 -05 29 03.4 u C73
2012-07-03 21:57:17 C 19 54 45.21 -05 28 55.7 u C73
2012-07-03 21:59:36 C 19 54 45.43 -05 28 48.1 u C73
2012-07-03 22:01:55 C 19 54 45.67 -05 28 41.2 u C73
2012-07-04 06:40:02 C 19 55 42.30 -04 59 27.4 u H21
2012-07-04 06:45:35 C 19 55 42.83 -04 59 08.0 u H21
2012-07-04 06:50:59 C 19 55 43.38 -04 58 49.6 u H21
2012-07-04 06:55:56 C 19 55 43.87 -04 58 32.3 u H21
2012-07-04 22:25:11 C 19 57 34.44 -04 02 42.3 u 160
2012-07-04 22:27:27 C 19 57 34.69 -04 02 33.8 u 160
2012-07-04 22:29:27 C 19 57 34.91 -04 02 26.0 u 160
2012-07-04 22:31:27 C 19 57 35.13 -04 02 18.5 u 160
2012-07-04 22:33:26 C 19 57 35.36 -04 02 11.1 u 160
2012-07-05 06:21:17 C 19 58 32.83 -03 32 08.0 u H21
2012-07-05 06:25:15 C 19 58 33.28 -03 31 52.4 u H21
2012-07-05 06:29:13 C 19 58 33.75 -03 31 36.8 u H21
2012-07-05 06:33:11 C 19 58 34.22 -03 31 21.2 u H21
2012-07-05 23:20:18 C 20 00 50.95 -02 21 48.6 o J13
2012-07-05 23:20:56 C 20 00 51.09 -02 21 45.4 o J13
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)