455554 (2004 MQ1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7048324132 ± 1.88e-08
Semi-major axis (a)2.4074175786 AU ± 6.15e-09
Inclination (i)11.12358932° ± 2.54e-06
Long. of Asc. Node (Ω)56.96645529° ± 1.98e-05
Arg. of Perihelion (ω)332.10353084° ± 1.97e-05
Mean Anomaly (M)241.36517585° ± 3.75e-06
Mean Motion (n)0.2638670338°/day ± 1.01e-09
Perihelion dist (q)0.71059164 AU ± 4.53e-08
Aphelion dist (Q)4.10424352 AU ± 4.64e-08
Orbital Period3.73531422 yr ± 1.43e-08
Physical Parameters
H (abs. magnitude)18.02
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.204″
Uncertainty0
Orbit TypeApollo
MOID0.122430 AU
Observations Used234
Radar Obs Used2
Oppositions8
Arc Total2004-2020
First Observation Used2004-06-17
Last Observation Used2020-03-05
Observations (270)
Date Type RA Dec Mag Band Observatory
2004-07-20 17:19:54 C 23 40 12.667 -67 01 44.64 r 413
2004-07-22 13:57:31 C 00 23 41.875 -69 04 52.36 r 413
2004-07-22 13:59:20 C 00 23 43.889 -69 04 56.94 r 413
2004-11-09 12:20:57 C 11 20 00.58 +13 49 42.4 o 696
2004-11-09 12:30:36 C 11 20 01.44 +13 49 40.9 o 696
2004-12-12 12:40:21 C 12 09 23.87 +13 17 56.8 d 291
2004-12-12 12:46:44 C 12 09 24.12 +13 17 57.7 d 291
2004-12-12 12:52:31 C 12 09 24.35 +13 17 59.3 d 291
2004-12-13 15:33:08 C 12 10 25.02 +13 20 52.6 F65
2004-12-13 15:35:48 C 12 10 25.13 +13 20 53.1 F65
2004-12-13 15:38:33 C 12 10 25.26 +13 20 54.3 F65
2005-02-09 09:23:32 C 11 49 52.55 +22 26 22.9 F65
2005-02-09 09:25:26 C 11 49 52.41 +22 26 24.0 F65
2005-02-09 09:27:27 C 11 49 52.30 +22 26 24.8 F65
2009-02-26 09:24:00 C 12 38 15.78 +11 15 58.9 o 291
2009-02-26 09:34:21 C 12 38 15.28 +11 16 02.3 o 291
2009-02-26 09:44:58 C 12 38 14.84 +11 16 06.0 o 291
2009-02-27 09:25:40 C 12 37 13.43 +11 23 55.7 o 291
2009-02-27 09:36:10 C 12 37 12.93 +11 23 59.5 o 291
2009-02-27 09:48:49 C 12 37 12.38 +11 24 03.5 o 291
2014-04-23 04:44:11 C 14 24 11.93 -08 28 21.6 L W84
2014-04-23 04:48:52 C 14 24 11.74 -08 28 20.9 L W84
2014-04-23 04:53:30 C 14 24 11.56 -08 28 20.0 L W84
2014-04-23 04:58:05 C 14 24 11.39 -08 28 19.2 L W84
2014-04-23 05:02:43 C 14 24 11.21 -08 28 18.5 L W84
2014-04-24 05:16:01 C 14 23 15.77 -08 24 26.9 23.0 L W84
2014-04-24 05:20:33 C 14 23 15.60 -08 24 26.1 L W84
2014-04-24 05:25:07 C 14 23 15.42 -08 24 25.3 L W84
2014-04-24 05:29:41 C 14 23 15.24 -08 24 24.7 L W84
2014-04-24 05:34:15 C 14 23 15.06 -08 24 23.8 L W84
2014-04-26 04:27:31 C 14 21 27.37 -08 16 57.3 L W84
2014-04-26 04:32:09 C 14 21 27.19 -08 16 56.6 L W84
2014-04-26 04:41:21 C 14 21 26.81 -08 16 55.3 L W84
2015-06-22 09:26:01 C 16 32 49.967 -29 53 40.54 L F52
2015-06-22 09:40:26 C 16 32 48.707 -29 53 40.76 L F52
2015-06-22 10:09:12 C 16 32 46.197 -29 53 41.28 L F52
2015-07-04 03:23:14 C 16 09 50.16 -29 49 14.2 u 807
2015-07-04 03:31:14 C 16 09 49.52 -29 49 13.6 u 807
2015-07-04 03:39:26 C 16 09 48.90 -29 49 13.2 u 807
2015-12-22 01:38:52 C 20 22 17.10 +00 39 59.6 o 291
2015-12-22 01:40:37 C 20 22 17.25 +00 40 11.4 o 291
2015-12-22 01:42:23 C 20 22 17.51 +00 40 21.5 o 291
2016-01-06 23:04:51 S 22 27 29.70 +62 39 32.6 L C51
2016-01-06 23:05:02 S 22 27 29.96 +62 39 33.8 L C51
2016-01-07 00:39:17 S 22 28 53.05 +62 53 31.2 L C51
2016-01-11 00:49:52 C 00 33 14.15 +73 15 17.5 q H45
2016-01-11 00:50:51 C 00 33 15.82 +73 15 20.9 q H45
2016-01-11 00:52:03 C 00 33 17.73 +73 15 25.3 q H45
2016-01-11 00:52:38 C 00 33 18.79 +73 15 27.1 q H45
2016-01-11 00:54:04 C 00 33 21.19 +73 15 32.2 q H45
Radar Observations (2)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2015-12-26 18:24:00 168081.1579 1 Hz 2380 -1 -1
2015-12-27 18:17:00 158144012.82 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)