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 17:33:50 C 01 15 08.94 +18 43 11.5 u 084
2011-11-09 17:34:09 C 01 15 10.27 +18 43 10.4 u 084
2011-11-09 17:34:28 C 01 15 11.53 +18 43 09.2 u 084
2011-11-09 17:34:45 C 01 15 12.70 +18 43 08.4 u 084
2011-11-09 17:35:05 C 01 15 14.04 +18 43 07.1 u 084
2011-11-09 17:35:21 C 01 15 15.19 +18 43 06.4 u 084
2011-11-09 17:35:38 C 01 15 16.31 +18 43 05.3 u 084
2011-11-09 17:35:54 C 01 15 17.46 +18 43 04.5 u 084
2011-11-09 17:36:10 C 01 15 18.57 +18 43 03.5 u 084
2011-11-09 17:36:28 C 01 15 19.72 +18 43 02.7 u 084
2011-11-09 17:36:44 C 01 15 20.87 +18 43 01.5 u 084
2011-11-09 17:37:02 C 01 15 22.14 +18 43 00.6 u 084
2011-11-09 17:37:20 C 01 15 23.35 +18 42 59.4 u 084
2011-11-09 17:37:37 C 01 15 24.49 +18 42 58.4 u 084
2011-11-09 17:37:53 C 01 15 25.64 +18 42 57.7 u 084
2011-11-09 17:38:11 C 01 15 26.90 +18 42 56.6 u 084
2011-11-09 17:38:29 C 01 15 28.00 +18 42 55.8 u 084
2011-11-09 17:38:45 C 01 15 29.16 +18 42 54.8 u 084
2011-11-09 17:39:02 C 01 15 30.26 +18 42 53.7 u 084
2011-11-09 17:39:20 C 01 15 31.51 +18 42 52.7 u 084
2011-11-09 17:39:38 C 01 15 32.76 +18 42 51.7 u 084
2011-11-09 17:39:56 C 01 15 34.00 +18 42 50.5 u 084
2011-11-09 17:40:14 C 01 15 35.24 +18 42 49.7 u 084
2011-11-09 17:40:33 C 01 15 36.53 +18 42 48.5 u 084
2011-11-09 17:40:51 C 01 15 37.76 +18 42 47.4 u 084
2011-11-09 17:41:09 C 01 15 39.01 +18 42 46.3 u 084
2011-11-09 17:41:28 C 01 15 40.25 +18 42 45.4 u 084
2011-11-09 17:41:47 C 01 15 41.52 +18 42 44.3 u 084
2011-11-09 17:42:05 C 01 15 42.77 +18 42 43.2 u 084
2011-11-09 17:42:23 C 01 15 43.99 +18 42 42.1 u 084
2011-11-09 17:42:41 C 01 15 45.24 +18 42 41.1 u 084
2011-11-09 17:44:02 C 01 15 50.74 +18 42 36.6 u 084
2011-11-09 17:44:20 C 01 15 51.97 +18 42 35.4 u 084
2011-11-09 17:44:38 C 01 15 53.15 +18 42 34.6 u 084
2011-11-09 17:44:56 C 01 15 54.36 +18 42 33.3 u 084
2011-11-09 17:45:14 C 01 15 55.55 +18 42 32.3 u 084
2011-11-09 17:45:31 C 01 15 56.76 +18 42 31.3 u 084
2011-11-09 17:45:49 C 01 15 57.93 +18 42 30.3 u 084
2011-11-09 17:46:07 C 01 15 59.14 +18 42 29.0 u 084
2011-11-09 17:46:25 C 01 16 00.32 +18 42 28.3 u 084
2011-11-09 17:46:42 C 01 16 01.52 +18 42 27.2 u 084
2011-11-09 17:47:00 C 01 16 02.72 +18 42 26.3 u 084
2011-11-09 17:47:36 C 01 16 05.08 +18 42 24.3 u 084
2011-11-09 17:47:53 C 01 16 06.28 +18 42 23.2 u 084
2011-11-09 17:48:11 C 01 16 07.48 +18 42 22.2 u 084
2011-11-09 17:48:27 C 01 16 08.62 +18 42 21.1 u 084
2011-11-09 17:48:46 C 01 16 09.81 +18 42 20.0 u 084
2011-11-09 17:50:11 C 01 16 15.55 +18 42 15.1 u 084
2011-11-09 17:50:29 C 01 16 16.74 +18 42 14.2 u 084
2011-11-09 17:50:47 C 01 16 17.95 +18 42 13.2 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)