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 23:27:42 C 02 27 53.14 +16 43 27.4 15.7 u 084
2011-11-14 23:30:11 C 02 27 55.137 +16 43 54.64 o C60
2011-11-14 23:30:52 C 02 27 53.34 +16 43 26.5 15.8 u 084
2011-11-14 23:32:50 C 02 27 55.253 +16 43 54.04 o C60
2011-11-14 23:34:03 C 02 27 53.51 +16 43 25.7 15.9 u 084
2011-11-14 23:35:30 C 02 27 55.367 +16 43 53.49 o C60
2011-11-14 23:37:14 C 02 27 53.69 +16 43 25.1 15.9 u 084
2011-11-14 23:38:09 C 02 27 55.484 +16 43 52.85 o C60
2011-11-14 23:40:25 C 02 27 53.88 +16 43 24.2 15.8 u 084
2011-11-14 23:40:48 C 02 27 55.600 +16 43 52.27 o C60
2011-11-14 23:43:28 C 02 27 55.727 +16 43 51.67 o C60
2011-11-14 23:43:36 C 02 27 54.07 +16 43 23.3 15.7 u 084
2011-11-14 23:46:07 C 02 27 55.836 +16 43 51.08 o C60
2011-11-14 23:46:47 C 02 27 54.24 +16 43 22.6 15.8 u 084
2011-11-14 23:48:46 C 02 27 55.956 +16 43 50.43 o C60
2011-11-14 23:49:58 C 02 27 54.43 +16 43 21.8 15.8 u 084
2011-11-14 23:51:25 C 02 27 56.068 +16 43 49.82 o C60
2011-11-14 23:53:07 C 02 27 54.59 +16 43 21.2 16.0 u 084
2011-11-14 23:54:04 C 02 27 56.184 +16 43 49.31 o C60
2011-11-14 23:56:19 C 02 27 54.79 +16 43 20.2 16.0 u 084
2011-11-14 23:56:44 C 02 27 56.317 +16 43 48.62 o C60
2011-11-14 23:59:23 C 02 27 56.435 +16 43 48.07 o C60
2011-11-14 23:59:30 C 02 27 54.96 +16 43 19.2 16.1 u 084
2011-11-15 00:02:02 C 02 27 56.554 +16 43 47.35 o C60
2011-11-15 00:02:42 C 02 27 55.13 +16 43 18.1 16.2 u 084
2011-11-15 00:04:41 C 02 27 56.677 +16 43 46.75 o C60
2011-11-15 00:05:52 C 02 27 55.37 +16 43 17.7 16.1 u 084
2011-11-15 00:07:20 C 02 27 56.791 +16 43 46.24 o C60
2011-11-15 00:09:03 C 02 27 55.54 +16 43 16.9 16.1 u 084
2011-11-15 00:09:59 C 02 27 56.913 +16 43 45.64 o C60
2011-11-15 00:12:15 C 02 27 55.73 +16 43 16.1 15.9 u 084
2011-11-15 00:12:39 C 02 27 57.036 +16 43 44.85 o C60
2011-11-15 00:15:18 C 02 27 57.163 +16 43 44.33 o C60
2011-11-15 00:15:26 C 02 27 55.94 +16 43 15.2 15.8 u 084
2011-11-15 00:17:57 C 02 27 57.272 +16 43 43.71 o C60
2011-11-15 00:18:36 C 02 27 56.12 +16 43 14.4 15.8 u 084
2011-11-15 00:20:37 C 02 27 57.398 +16 43 42.99 o C60
2011-11-15 00:21:47 C 02 27 56.30 +16 43 13.6 15.8 u 084
2011-11-15 00:23:16 C 02 27 57.539 +16 43 42.24 o C60
2011-11-15 00:24:57 C 02 27 56.49 +16 43 12.7 15.8 u 084
2011-11-15 00:27:52 C 02 27 57.747 +16 43 41.11 o C60
2011-11-15 00:28:08 C 02 27 56.68 +16 43 11.9 15.9 u 084
2011-11-15 00:30:32 C 02 27 57.866 +16 43 40.52 o C60
2011-11-15 00:31:19 C 02 27 56.88 +16 43 11.1 15.9 u 084
2011-11-15 00:33:11 C 02 27 57.998 +16 43 39.83 o C60
2011-11-15 00:34:29 C 02 27 57.08 +16 43 10.0 15.9 u 084
2011-11-15 00:35:50 C 02 27 58.118 +16 43 39.09 o C60
2011-11-15 00:37:40 C 02 27 57.27 +16 43 09.4 15.8 u 084
2011-11-15 00:38:30 C 02 27 58.245 +16 43 38.45 o C60
2011-11-15 00:40:51 C 02 27 57.49 +16 43 08.5 15.8 u 084
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)