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
2016-01-15 13:17:18 C 09 06 43.540 +10 03 14.58 L F51
2016-01-15 13:34:38 C 09 06 41.861 +10 03 21.06 L F51
2016-01-15 14:09:20 C 09 06 38.524 +10 03 33.90 L F51
2016-02-01 08:01:50 C 08 32 04.561 +12 30 08.87 L F51
2016-02-01 08:17:22 C 08 32 03.369 +12 30 14.27 L F51
2016-02-01 08:32:56 C 08 32 02.188 +12 30 19.62 L F51
2016-02-01 08:48:27 C 08 32 00.984 +12 30 24.96 L F51
2018-06-14 08:09:35 C 15 20 07.092 -18 00 33.97 U F51
2018-06-14 08:25:35 C 15 20 05.853 -18 00 27.99 U F51
2018-06-14 08:41:34 C 15 20 04.536 -18 00 22.13 U F51
2018-12-04 15:14:50 C 10 54 39.56 -00 46 32.2 U T08
2018-12-04 15:26:57 C 10 54 29.58 -00 45 50.3 U T08
2018-12-04 15:39:23 C 10 54 19.36 -00 45 07.5 U T08
2018-12-04 15:51:32 C 10 54 09.35 -00 44 24.8 U T08
2018-12-05 05:45:13 S 10 43 12.600 +00 04 03.94 L C51
2018-12-05 07:19:29 S 10 42 00.108 +00 09 20.77 L C51
2018-12-06 14:52:33 C 10 18 50.21 +01 49 40.7 U T05
2018-12-06 15:06:17 C 10 18 40.21 +01 50 22.8 U T05
2018-12-06 15:18:06 C 10 18 31.61 +01 50 58.9 U T05
2018-12-06 15:30:45 C 10 18 22.38 +01 51 37.7 U T05
2018-12-08 03:58:12 C 09 54 05.66 +03 35 41.5 V C95
2018-12-08 04:04:24 C 09 54 01.54 +03 35 56.8 V C95
2018-12-08 04:10:35 C 09 53 57.53 +03 36 13.5 V C95
2018-12-08 13:50:49 C 09 48 00.08 +04 02 09.6 U T08
2018-12-08 14:02:43 C 09 47 52.58 +04 02 40.3 U T08
2018-12-08 14:14:46 C 09 47 44.94 +04 03 11.7 U T08
2018-12-10 08:58:11 C 09 23 34.99 +05 43 45.1 V 703
2018-12-10 09:05:46 C 09 23 30.90 +05 44 01.2 V 703
2018-12-10 09:13:20 C 09 23 26.82 +05 44 17.1 V 703
2018-12-10 09:20:55 C 09 23 22.70 +05 44 34.2 V 703
2018-12-10 14:24:52 C 09 20 42.12 +05 55 37.0 U T05
2018-12-10 14:38:12 C 09 20 34.97 +05 56 04.8 U T05
2018-12-10 14:50:50 C 09 20 28.17 +05 56 31.2 U T05
2018-12-12 03:10:54 C 09 02 52.58 +07 06 46.7 q 160
2018-12-12 03:14:45 C 09 02 50.79 +07 06 53.2 q 160
2018-12-12 03:18:35 C 09 02 48.98 +07 06 59.5 q 160
2018-12-13 09:30:05 C 08 49 49.23 +07 58 02.7 V 703
2018-12-13 09:37:41 C 08 49 45.99 +07 58 14.6 V 703
2018-12-13 09:45:19 C 08 49 42.74 +07 58 26.8 V 703
2018-12-13 09:52:56 C 08 49 39.52 +07 58 38.7 V 703
2018-12-15 05:02:35 C 08 33 16.29 +09 01 49.8 V W85
2018-12-15 05:13:49 C 08 33 12.19 +09 02 04.9 V W85
2018-12-15 05:25:03 C 08 33 08.08 +09 02 19.9 V W85
2018-12-15 05:36:18 C 08 33 03.94 +09 02 34.8 V W85
2018-12-15 05:47:32 C 08 32 59.83 +09 02 49.8 V W85
2018-12-15 05:58:47 C 08 32 55.72 +09 03 04.5 V W85
2018-12-15 06:10:01 C 08 32 51.59 +09 03 19.5 V W85
2018-12-15 06:21:16 C 08 32 47.46 +09 03 34.3 V W85
2018-12-16 00:00:44 C 08 26 45.66 +09 24 38.6 q 157
2018-12-16 00:03:03 C 08 26 44.86 +09 24 41.5 q 157
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)