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
2011-11-09 17:10:56 C 01 13 55.81 +18 45 39.5 o C60
2011-11-09 17:11:09 C 01 13 56.68 +18 45 38.8 o C60
2011-11-09 17:11:12 C 01 13 33.42 +18 44 27.8 u 084
2011-11-09 17:11:21 C 01 13 57.56 +18 45 38.4 o C60
2011-11-09 17:11:31 C 01 13 34.77 +18 44 26.8 u 084
2011-11-09 17:11:33 C 01 13 58.46 +18 45 37.6 o C60
2011-11-09 17:11:45 C 01 13 59.30 +18 45 37.0 o C60
2011-11-09 17:11:49 C 01 13 36.12 +18 44 25.8 u 084
2011-11-09 17:11:58 C 01 14 00.19 +18 45 36.4 o C60
2011-11-09 17:12:08 C 01 13 37.42 +18 44 24.7 u 084
2011-11-09 17:12:10 C 01 14 01.09 +18 45 35.6 o C60
2011-11-09 17:12:27 C 01 13 38.75 +18 44 23.7 u 084
2011-11-09 17:12:46 C 01 13 40.09 +18 44 22.7 u 084
2011-11-09 17:12:50 C 01 14 03.97 +18 45 34.8 o C60
2011-11-09 17:13:04 C 01 13 41.41 +18 44 21.7 u 084
2011-11-09 17:13:22 C 01 13 42.63 +18 44 20.8 u 084
2011-11-09 17:13:39 C 01 13 43.97 +18 44 19.6 u 084
2011-11-09 17:13:57 C 01 13 45.26 +18 44 18.6 u 084
2011-11-09 17:14:15 C 01 13 46.43 +18 44 17.7 u 084
2011-11-09 17:14:31 C 01 13 47.63 +18 44 16.7 u 084
2011-11-09 17:14:47 C 01 13 48.79 +18 44 15.9 u 084
2011-11-09 17:15:04 C 01 13 49.99 +18 44 15.0 u 084
2011-11-09 17:15:20 C 01 13 51.17 +18 44 13.9 u 084
2011-11-09 17:15:38 C 01 13 52.35 +18 44 13.0 u 084
2011-11-09 17:15:54 C 01 13 53.53 +18 44 12.3 u 084
2011-11-09 17:20:37 C 01 14 37.34 +18 45 11.1 o C60
2011-11-09 17:20:51 C 01 14 38.38 +18 45 10.2 o C60
2011-11-09 17:21:04 C 01 14 39.20 +18 45 10.0 o C60
2011-11-09 17:21:18 C 01 14 40.20 +18 45 09.1 o C60
2011-11-09 17:21:31 C 01 14 41.20 +18 45 08.2 o C60
2011-11-09 17:21:44 C 01 14 42.09 +18 45 07.7 o C60
2011-11-09 17:21:52 C 01 14 18.88 +18 43 52.2 u 084
2011-11-09 17:22:11 C 01 14 43.96 +18 45 06.1 o C60
2011-11-09 17:22:12 C 01 14 20.32 +18 43 51.0 u 084
2011-11-09 17:22:24 C 01 14 44.94 +18 45 05.7 o C60
2011-11-09 17:22:37 C 01 14 45.88 +18 45 05.3 o C60
2011-11-09 17:22:51 C 01 14 46.79 +18 45 04.2 o C60
2011-11-09 17:23:04 C 01 14 47.76 +18 45 03.6 o C60
2011-11-09 17:23:18 C 01 14 48.70 +18 45 03.0 o C60
2011-11-09 17:23:31 C 01 14 49.62 +18 45 02.7 o C60
2011-11-09 17:23:53 C 01 14 27.36 +18 43 45.4 u 084
2011-11-09 17:23:58 C 01 14 51.53 +18 45 00.9 o C60
2011-11-09 17:24:12 C 01 14 28.77 +18 43 44.2 u 084
2011-11-09 17:24:25 C 01 14 53.43 +18 44 59.5 o C60
2011-11-09 17:24:38 C 01 14 54.36 +18 44 59.0 o C60
2011-11-09 17:24:42 C 01 14 30.82 +18 43 42.5 u 084
2011-11-09 17:24:51 C 01 14 55.34 +18 44 58.1 o C60
2011-11-09 17:25:00 C 01 14 32.07 +18 43 41.7 u 084
2011-11-09 17:25:05 C 01 14 56.31 +18 44 58.2 o C60
2011-11-09 17:25:18 C 01 14 57.16 +18 44 57.0 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)