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 16:49:17 C 01 12 20.09 +18 46 42.2 o C60
2011-11-09 16:49:23 C 01 11 57.65 +18 45 39.2 u 084
2011-11-09 16:49:41 C 01 11 58.97 +18 45 38.4 u 084
2011-11-09 16:49:59 C 01 12 00.27 +18 45 37.5 u 084
2011-11-09 16:50:17 C 01 12 01.64 +18 45 36.4 u 084
2011-11-09 16:50:19 C 01 12 24.60 +18 46 39.5 o C60
2011-11-09 16:50:35 C 01 12 02.97 +18 45 35.6 u 084
2011-11-09 16:50:43 C 01 12 26.51 +18 46 37.8 o C60
2011-11-09 16:50:52 C 01 12 04.25 +18 45 34.5 u 084
2011-11-09 16:50:56 C 01 12 27.41 +18 46 37.5 o C60
2011-11-09 16:51:08 C 01 12 28.36 +18 46 36.7 o C60
2011-11-09 16:51:10 C 01 12 05.59 +18 45 33.5 u 084
2011-11-09 16:51:20 C 01 12 29.27 +18 46 36.3 o C60
2011-11-09 16:51:29 C 01 12 06.93 +18 45 32.7 u 084
2011-11-09 16:51:32 C 01 12 30.14 +18 46 36.2 o C60
2011-11-09 16:51:45 C 01 12 31.12 +18 46 34.8 o C60
2011-11-09 16:52:03 C 01 12 09.57 +18 45 30.7 u 084
2011-11-09 16:52:09 C 01 12 32.97 +18 46 33.8 o C60
2011-11-09 16:52:21 C 01 12 10.84 +18 45 29.8 u 084
2011-11-09 16:52:33 C 01 12 34.79 +18 46 33.1 o C60
2011-11-09 16:52:39 C 01 12 12.19 +18 45 28.7 u 084
2011-11-09 16:52:46 C 01 12 35.75 +18 46 32.3 o C60
2011-11-09 16:52:57 C 01 12 13.53 +18 45 27.8 u 084
2011-11-09 16:52:58 C 01 12 36.61 +18 46 32.0 o C60
2011-11-09 16:53:11 C 01 12 37.57 +18 46 31.0 o C60
2011-11-09 16:53:14 C 01 12 14.79 +18 45 26.9 u 084
2011-11-09 16:53:32 C 01 12 16.14 +18 45 25.9 u 084
2011-11-09 16:53:36 C 01 12 39.43 +18 46 29.5 o C60
2011-11-09 16:53:49 C 01 12 40.32 +18 46 29.6 o C60
2011-11-09 16:53:49 C 01 12 17.41 +18 45 25.0 u 084
2011-11-09 16:54:01 C 01 12 41.25 +18 46 28.6 o C60
2011-11-09 16:54:08 C 01 12 18.77 +18 45 24.0 u 084
2011-11-09 16:54:13 C 01 12 42.11 +18 46 28.4 o C60
2011-11-09 16:54:26 C 01 12 20.10 +18 45 22.9 u 084
2011-11-09 16:54:44 C 01 12 21.44 +18 45 22.0 u 084
2011-11-09 16:54:50 C 01 12 44.92 +18 46 26.4 o C60
2011-11-09 16:55:02 C 01 12 22.76 +18 45 21.1 u 084
2011-11-09 16:55:14 C 01 12 46.74 +18 46 25.0 o C60
2011-11-09 16:55:19 C 01 12 24.06 +18 45 20.1 u 084
2011-11-09 16:55:26 C 01 12 47.64 +18 46 24.7 o C60
2011-11-09 16:55:37 C 01 12 25.41 +18 45 19.4 u 084
2011-11-09 16:55:39 C 01 12 48.61 +18 46 24.6 o C60
2011-11-09 16:55:51 C 01 12 49.49 +18 46 23.2 o C60
2011-11-09 16:55:56 C 01 12 26.74 +18 45 18.2 u 084
2011-11-09 16:56:03 C 01 12 50.44 +18 46 22.8 o C60
2011-11-09 16:56:14 C 01 12 28.07 +18 45 17.2 u 084
2011-11-09 16:56:28 C 01 12 52.20 +18 46 21.6 o C60
2011-11-09 16:56:32 C 01 12 29.42 +18 45 16.3 u 084
2011-11-09 16:56:50 C 01 12 30.77 +18 45 15.2 u 084
2011-11-09 16:57:05 C 01 12 54.97 +18 46 19.9 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)