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
2011-11-14 07:13:58 C 02 26 39.203 +16 48 43.79 L F51
2011-11-14 07:20:20 C 02 26 31.16 +16 48 02.4 G69
2011-11-14 07:39:45 C 02 26 32.06 +16 47 57.2 G69
2011-11-14 07:59:59 C 02 26 33.01 +16 47 51.3 G69
2011-11-14 12:21:54 C 02 27 05.19 +16 46 50.9 u 379
2011-11-14 12:24:33 C 02 27 05.31 +16 46 50.6 u 379
2011-11-14 12:31:44 C 02 27 05.59 +16 46 49.6 u 379
2011-11-14 12:34:24 C 02 27 05.69 +16 46 49.1 u 379
2011-11-14 12:37:03 C 02 27 05.80 +16 46 48.8 u 379
2011-11-14 12:45:32 C 02 27 06.15 +16 46 47.6 u 379
2011-11-14 12:48:12 C 02 27 06.30 +16 46 47.3 u 379
2011-11-14 12:54:59 C 02 27 06.61 +16 46 46.2 u 379
2011-11-14 12:57:40 C 02 27 06.68 +16 46 45.6 u 379
2011-11-14 13:19:51 C 02 27 07.56 +16 46 42.2 u 379
2011-11-14 13:25:12 C 02 27 07.76 +16 46 41.1 u 379
2011-11-14 13:36:45 C 02 27 08.21 +16 46 38.2 u 379
2011-11-14 17:51:39 C 02 27 35.36 +16 45 13.0 u B18
2011-11-14 19:33:49 C 02 27 39.79 +16 45 00.0 u B18
2011-11-14 19:48:41 C 02 27 45.034 +16 44 28.22 o C60
2011-11-14 19:51:21 C 02 27 45.173 +16 44 28.04 o C60
2011-11-14 19:54:00 C 02 27 45.311 +16 44 27.78 o C60
2011-11-14 19:54:45 C 02 27 44.46 +16 44 28.4 o 639
2011-11-14 19:58:17 C 02 27 45.535 +16 44 27.32 o C60
2011-11-14 20:00:56 C 02 27 45.667 +16 44 27.13 o C60
2011-11-14 20:03:35 C 02 27 45.809 +16 44 26.99 o C60
2011-11-14 20:06:15 C 02 27 45.953 +16 44 26.66 o C60
2011-11-14 20:08:38 C 02 27 45.15 +16 44 26.7 o 639
2011-11-14 20:08:54 C 02 27 46.077 +16 44 26.31 o C60
2011-11-14 20:11:33 C 02 27 46.213 +16 44 26.10 o C60
2011-11-14 20:13:37 C 02 27 45.44 +16 44 33.3 u C47
2011-11-14 20:14:13 C 02 27 46.342 +16 44 25.85 o C60
2011-11-14 20:16:20 C 02 27 45.66 +16 44 25.9 o 639
2011-11-14 20:16:52 C 02 27 46.476 +16 44 25.59 o C60
2011-11-14 20:18:24 C 02 27 45.64 +16 44 32.8 u C47
2011-11-14 20:19:32 C 02 27 46.606 +16 44 25.27 o C60
2011-11-14 20:22:11 C 02 27 46.731 +16 44 24.95 o C60
2011-11-14 20:23:07 C 02 27 45.87 +16 44 32.2 u C47
2011-11-14 20:24:50 C 02 27 46.872 +16 44 24.75 o C60
2011-11-14 20:24:57 C 02 27 41.81 +16 44 50.5 u B18
2011-11-14 20:27:29 C 02 27 47.002 +16 44 24.54 o C60
2011-11-14 20:30:08 C 02 27 47.129 +16 44 24.12 o C60
2011-11-14 20:32:47 C 02 27 47.273 +16 44 23.91 o C60
2011-11-14 20:34:28 C 02 27 46.39 +16 44 30.8 u C47
2011-11-14 20:35:27 C 02 27 47.394 +16 44 23.56 o C60
2011-11-14 20:38:06 C 02 27 47.510 +16 44 23.12 o C60
2011-11-14 20:40:45 C 02 27 47.644 +16 44 22.91 o C60
2011-11-14 20:43:25 C 02 27 47.783 +16 44 22.64 o C60
2011-11-14 20:46:04 C 02 27 47.899 +16 44 22.23 o C60
2011-11-14 20:49:30 C 02 27 48.064 +16 44 21.90 o C60
2011-11-14 20:52:09 C 02 27 48.187 +16 44 21.57 o C60
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)