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 22:11:11 C 02 27 49.00 +16 43 45.1 15.9 u 084
2011-11-14 22:12:00 C 02 27 51.766 +16 44 09.89 o C60
2011-11-14 22:14:22 C 02 27 49.19 +16 43 44.5 15.9 u 084
2011-11-14 22:14:39 C 02 27 51.878 +16 44 09.38 o C60
2011-11-14 22:17:18 C 02 27 51.986 +16 44 08.94 o C60
2011-11-14 22:17:32 C 02 27 49.33 +16 43 43.7 15.8 u 084
2011-11-14 22:19:57 C 02 27 52.110 +16 44 08.38 o C60
2011-11-14 22:20:42 C 02 27 49.52 +16 43 43.0 15.7 u 084
2011-11-14 22:22:37 C 02 27 52.232 +16 44 07.93 o C60
2011-11-14 22:23:53 C 02 27 49.66 +16 43 42.5 15.6 u 084
2011-11-14 22:25:16 C 02 27 52.331 +16 44 07.56 o C60
2011-11-14 22:27:03 C 02 27 49.86 +16 43 41.6 15.7 u 084
2011-11-14 22:27:56 C 02 27 52.444 +16 44 07.08 o C60
2011-11-14 22:30:28 C 02 27 50.04 +16 43 41.0 15.6 u 084
2011-11-14 22:30:35 C 02 27 52.558 +16 44 06.58 o C60
2011-11-14 22:33:14 C 02 27 52.670 +16 44 06.10 o C60
2011-11-14 22:33:39 C 02 27 50.21 +16 43 40.2 15.8 u 084
2011-11-14 22:35:54 C 02 27 52.783 +16 44 05.60 o C60
2011-11-14 22:36:50 C 02 27 50.36 +16 43 39.5 15.8 u 084
2011-11-14 22:38:33 C 02 27 52.901 +16 44 05.11 o C60
2011-11-14 22:40:01 C 02 27 50.51 +16 43 38.9 16.0 u 084
2011-11-14 22:41:13 C 02 27 53.015 +16 44 04.57 o C60
2011-11-14 22:43:11 C 02 27 50.72 +16 43 37.8 16.0 u 084
2011-11-14 22:43:52 C 02 27 53.131 +16 44 04.11 o C60
2011-11-14 22:46:22 C 02 27 50.87 +16 43 37.2 16.3 u 084
2011-11-14 22:46:31 C 02 27 53.242 +16 44 03.55 o C60
2011-11-14 22:49:10 C 02 27 53.355 +16 44 03.14 o C60
2011-11-14 22:49:34 C 02 27 51.03 +16 43 36.1 16.5 u 084
2011-11-14 22:51:49 C 02 27 53.466 +16 44 02.53 o C60
2011-11-14 22:54:29 C 02 27 53.586 +16 44 02.00 o C60
2011-11-14 22:57:08 C 02 27 53.707 +16 44 01.52 o C60
2011-11-14 22:59:05 C 02 27 51.53 +16 43 36.2 15.7 u 084
2011-11-14 22:59:48 C 02 27 53.829 +16 44 00.77 o C60
2011-11-14 23:02:16 C 02 27 51.72 +16 43 33.6 15.7 u 084
2011-11-14 23:02:27 C 02 27 53.949 +16 44 00.47 o C60
2011-11-14 23:05:27 C 02 27 51.90 +16 43 32.0 15.9 u 084
2011-11-14 23:06:17 C 02 27 54.098 +16 43 59.77 o C60
2011-11-14 23:08:38 C 02 27 52.10 +16 43 32.2 15.9 u 084
2011-11-14 23:08:57 C 02 27 54.223 +16 43 59.05 o C60
2011-11-14 23:11:36 C 02 27 54.326 +16 43 58.60 o C60
2011-11-14 23:11:49 C 02 27 52.26 +16 43 31.3 15.8 u 084
2011-11-14 23:14:15 C 02 27 54.436 +16 43 58.06 o C60
2011-11-14 23:14:59 C 02 27 52.44 +16 43 30.7 15.8 u 084
2011-11-14 23:16:54 C 02 27 54.550 +16 43 57.53 o C60
2011-11-14 23:18:10 C 02 27 52.59 +16 43 30.4 15.5 u 084
2011-11-14 23:19:34 C 02 27 54.673 +16 43 56.95 o C60
2011-11-14 23:21:21 C 02 27 52.83 +16 43 28.6 15.7 u 084
2011-11-14 23:22:13 C 02 27 54.788 +16 43 56.37 o C60
2011-11-14 23:24:52 C 02 27 54.900 +16 43 55.72 o C60
2011-11-14 23:27:32 C 02 27 55.015 +16 43 55.16 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)