308635 (2005 YU55)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4304838155 ± 1.25e-09
Semi-major axis (a)1.1568617123 AU ± 9.63e-10
Inclination (i)0.33982909° ± 2.53e-07
Long. of Asc. Node (Ω)35.92264006° ± 8.03e-06
Arg. of Perihelion (ω)273.57015732° ± 8.00e-06
Mean Anomaly (M)146.19378132° ± 6.56e-06
Mean Motion (n)0.7921184052°/day ± 9.89e-10
Perihelion dist (q)0.65885147 AU ± 1.55e-09
Aphelion dist (Q)1.65487196 AU ± 2.00e-09
Orbital Period1.24429161 yr ± 1.55e-09
Physical Parameters
H (abs. magnitude)21.91
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.266″
Uncertainty0
Orbit TypeApollo
MOID0.000492 AU
Observations Used3822
Radar Obs Used19
Oppositions1
Arc Total2005-2022
First Observation Used2005-12-24
Last Observation Used2022-01-06
Observations (4006)
Date Type RA Dec Mag Band Observatory
2011-11-11 21:09:25 C 02 16 18.11 +17 10 10.5 V 134
2011-11-11 21:10:09 C 02 16 18.29 +17 10 10.1 V 134
2011-11-11 21:10:53 C 02 16 18.47 +17 10 09.6 V 134
2011-11-11 21:11:27 C 02 16 23.17 +17 10 44.5 u 958
2011-11-11 21:11:36 C 02 16 18.66 +17 10 09.1 V 134
2011-11-11 21:11:38 C 02 16 19.75 +17 10 06.0 u B86
2011-11-11 21:12:19 C 02 16 18.84 +17 10 08.8 V 134
2011-11-11 21:13:02 C 02 16 19.02 +17 10 08.2 V 134
2011-11-11 21:13:46 C 02 16 19.20 +17 10 07.8 V 134
2011-11-11 21:14:08 C 02 16 20.27 +17 10 06.7 u 510
2011-11-11 21:14:30 C 02 16 19.38 +17 10 07.4 V 134
2011-11-11 21:15:13 C 02 16 19.56 +17 10 06.8 V 134
2011-11-11 21:15:57 C 02 16 19.75 +17 10 06.5 V 134
2011-11-11 21:16:38 C 02 16 19.93 +17 10 06.1 V 134
2011-11-11 21:17:22 C 02 16 20.11 +17 10 05.6 V 134
2011-11-11 21:17:33 C 02 16 24.70 +17 10 40.9 u 958
2011-11-11 21:18:06 C 02 16 20.28 +17 10 05.1 V 134
2011-11-11 21:18:50 C 02 16 20.46 +17 10 04.7 V 134
2011-11-11 21:19:02 C 02 16 21.58 +17 10 01.1 u B86
2011-11-11 21:19:33 C 02 16 20.64 +17 10 04.1 V 134
2011-11-11 21:20:17 C 02 16 20.82 +17 10 03.7 V 134
2011-11-11 21:20:59 C 02 16 21.01 +17 10 03.2 V 134
2011-11-11 21:21:42 C 02 16 21.19 +17 10 02.9 V 134
2011-11-11 21:22:26 C 02 16 21.36 +17 10 02.3 V 134
2011-11-11 21:23:06 C 02 16 22.51 +17 10 01.2 u 510
2011-11-11 21:23:10 C 02 16 21.54 +17 10 01.8 V 134
2011-11-11 21:23:41 C 02 16 21.35 +17 10 30.5 u 595
2011-11-11 21:23:54 C 02 16 21.71 +17 10 01.4 V 134
2011-11-11 21:24:12 C 02 16 26.20 +17 10 37.2 u 958
2011-11-11 21:24:36 C 02 16 21.90 +17 10 01.0 V 134
2011-11-11 21:25:19 C 02 16 22.09 +17 10 00.5 V 134
2011-11-11 21:26:03 C 02 16 22.26 +17 10 00.1 V 134
2011-11-11 21:26:22 C 02 16 23.43 +17 09 56.6 u B86
2011-11-11 21:26:47 C 02 16 22.44 +17 09 59.6 V 134
2011-11-11 21:27:31 C 02 16 22.62 +17 09 59.3 V 134
2011-11-11 21:28:15 C 02 16 22.80 +17 09 58.7 V 134
2011-11-11 21:28:58 C 02 16 22.98 +17 09 58.2 V 134
2011-11-11 21:29:40 C 02 16 23.15 +17 09 57.7 V 134
2011-11-11 21:30:02 C 02 16 27.75 +17 10 34.7 u 958
2011-11-11 21:30:24 C 02 16 23.33 +17 09 57.3 V 134
2011-11-11 21:31:07 C 02 16 23.52 +17 09 56.9 V 134
2011-11-11 21:31:52 C 02 16 23.69 +17 09 56.4 V 134
2011-11-11 21:32:35 C 02 16 23.87 +17 09 55.9 V 134
2011-11-11 21:33:17 C 02 16 24.04 +17 09 55.5 V 134
2011-11-11 21:33:44 C 02 16 25.29 +17 09 51.9 u B86
2011-11-11 21:34:01 C 02 16 24.23 +17 09 55.0 V 134
2011-11-11 21:34:44 C 02 16 24.40 +17 09 54.4 V 134
2011-11-11 21:36:12 C 02 16 24.76 +17 09 53.6 V 134
2011-11-11 21:36:32 C 02 16 29.25 +17 10 30.7 u 958
2011-11-11 21:36:56 C 02 16 24.94 +17 09 53.3 V 134
Radar Observations (19)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2010-04-19 21:44:00 -38992.1391 1 Hz 2380 -1 -1
2010-04-19 22:25:00 -43083.5482 0.5 Hz 2380 -1 -1
2010-04-19 22:34:00 15461068.67 1 us 2380 -1 -1
2010-04-19 22:34:00 -43977.4883 0.15 Hz 2380 -1 -1
2010-04-20 20:10:00 18135130.09 1 us 2380 -1 -1
2010-04-20 20:10:00 -114203.0344 0.15 Hz 2380 -1 -1
2010-04-21 18:57:00 22886379.62 1 us 2380 -1 -1
2011-11-04 17:30:00 793291.811 0.3 Hz 8560 -14 -14
2011-11-04 18:00:00 33361799.08 10 us 8560 -14 -14
2011-11-04 18:30:00 33195759.94 1.5 us 8560 -14 -14
2011-11-06 19:20:00 776779.375 0.2 Hz 8560 -13 -14
2011-11-06 21:20:00 16560666.47 2 us 8560 -14 -14
2011-11-07 20:20:00 756959.176 0.4 Hz 8560 -13 -14
2011-11-10 04:30:00 -750708.318 0.5 Hz 8560 -13 -14
2011-11-10 05:00:00 -753670.256 0.5 Hz 8560 -13 -14
2011-11-11 02:20:00 -754437.625 0.5 Hz 8560 -13 -14
2011-11-13 02:47:00 32606296.07 0.5 us 2380 -1 -1
2011-11-14 03:43:00 40796887.06 0.5 us 2380 -1 -1
2011-11-19 03:10:00 80470957.8 0.75 us 2380 -1 -1
Station codes
-14 DSS-14 Goldstone (70-m) -13 DSS-13 Goldstone (34-m) -1 Arecibo (305-m, 1963–2020)