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
2011-11-12 21:43:22 C 02 22 08.31 +16 57 12.3 V 134
2011-11-12 21:44:06 C 02 22 08.40 +16 57 12.0 V 134
2011-11-12 21:44:48 C 02 22 08.49 +16 57 11.7 V 134
2011-11-12 21:45:31 C 02 22 08.58 +16 57 11.5 V 134
2011-11-12 21:46:15 C 02 22 08.67 +16 57 11.2 V 134
2011-11-12 21:46:59 C 02 22 08.76 +16 57 11.0 V 134
2011-11-12 21:47:42 C 02 22 08.85 +16 57 10.7 V 134
2011-11-12 21:48:24 C 02 22 08.94 +16 57 10.4 V 134
2011-11-12 21:49:08 C 02 22 09.02 +16 57 10.0 V 134
2011-11-12 21:49:52 C 02 22 09.11 +16 57 09.9 V 134
2011-11-12 21:50:35 C 02 22 09.20 +16 57 09.5 V 134
2011-11-12 21:51:19 C 02 22 09.29 +16 57 09.3 V 134
2011-11-12 21:52:01 C 02 22 09.38 +16 57 09.0 V 134
2011-11-12 21:52:45 C 02 22 09.47 +16 57 08.7 V 134
2011-11-12 21:53:28 C 02 22 09.56 +16 57 08.5 V 134
2011-11-12 21:54:12 C 02 22 09.65 +16 57 08.2 V 134
2011-11-12 21:54:57 C 02 22 09.73 +16 57 07.9 V 134
2011-11-12 21:55:13 C 02 22 08.94 +16 57 17.0 u C47
2011-11-12 21:55:40 C 02 22 09.82 +16 57 07.6 V 134
2011-11-12 21:56:24 C 02 22 09.92 +16 57 07.3 V 134
2011-11-12 21:57:06 C 02 22 10.00 +16 57 07.0 V 134
2011-11-12 21:57:50 C 02 22 10.10 +16 57 06.7 V 134
2011-11-12 21:58:33 C 02 22 10.18 +16 57 06.5 V 134
2011-11-12 21:59:17 C 02 22 10.27 +16 57 06.2 V 134
2011-11-12 22:00:02 C 02 22 10.36 +16 57 05.9 V 134
2011-11-12 22:00:45 C 02 22 10.45 +16 57 05.6 V 134
2011-11-12 22:01:29 C 02 22 10.54 +16 57 05.3 V 134
2011-11-12 22:02:11 C 02 22 10.63 +16 57 05.1 V 134
2011-11-12 22:02:55 C 02 22 10.72 +16 57 04.8 V 134
2011-11-12 22:03:38 C 02 22 10.80 +16 57 04.5 V 134
2011-11-12 22:04:22 C 02 22 10.89 +16 57 04.2 V 134
2011-11-12 22:05:06 C 02 22 10.98 +16 57 03.9 V 134
2011-11-12 22:05:21 C 02 22 10.16 +16 57 12.9 u C47
2011-11-12 22:05:49 C 02 22 11.07 +16 57 03.7 V 134
2011-11-12 22:06:33 C 02 22 11.16 +16 57 03.4 V 134
2011-11-12 22:07:15 C 02 22 11.25 +16 57 03.0 V 134
2011-11-12 22:07:58 C 02 22 11.33 +16 57 02.8 V 134
2011-11-12 22:08:43 C 02 22 11.43 +16 57 02.5 V 134
2011-11-12 22:09:26 C 02 22 11.51 +16 57 02.2 V 134
2011-11-12 22:10:09 C 02 22 11.60 +16 57 02.0 V 134
2011-11-12 22:10:52 C 02 22 11.69 +16 57 01.6 V 134
2011-11-12 22:11:35 C 02 22 11.77 +16 57 01.3 V 134
2011-11-12 22:12:19 C 02 22 11.86 +16 57 01.0 V 134
2011-11-12 22:13:02 C 02 22 11.95 +16 57 00.8 V 134
2011-11-12 22:13:46 C 02 22 12.04 +16 57 00.5 V 134
2011-11-12 22:14:28 C 02 22 12.13 +16 57 00.2 V 134
2011-11-12 22:15:12 C 02 22 12.22 +16 56 59.9 V 134
2011-11-12 22:43:22 C 02 22 13.63 +16 56 59.3 o 461
2011-11-12 22:44:43 C 02 22 13.79 +16 56 58.5 o 461
2011-11-12 22:46:03 C 02 22 13.95 +16 56 58.0 o 461
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)