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 16:10:02 C 01 08 54.76 +18 47 43.0 u 084
2011-11-09 16:10:24 C 01 08 56.49 +18 47 41.8 u 084
2011-11-09 16:10:55 C 01 08 59.01 +18 47 40.3 u 084
2011-11-09 16:11:14 C 01 09 00.50 +18 47 39.4 u 084
2011-11-09 16:11:39 C 01 09 02.52 +18 47 38.2 u 084
2011-11-09 16:11:55 C 01 09 03.84 +18 47 37.3 u 084
2011-11-09 16:12:39 C 01 09 07.35 +18 47 35.0 u 084
2011-11-09 16:12:57 C 01 09 08.76 +18 47 34.1 u 084
2011-11-09 16:13:15 C 01 09 10.21 +18 47 33.1 u 084
2011-11-09 16:13:41 C 01 09 12.31 +18 47 31.9 u 084
2011-11-09 16:13:59 C 01 09 13.77 +18 47 31.0 u 084
2011-11-09 16:14:17 C 01 09 15.17 +18 47 29.9 u 084
2011-11-09 16:14:54 C 01 09 18.10 +18 47 28.1 u 084
2011-11-09 16:15:12 C 01 09 19.54 +18 47 27.3 u 084
2011-11-09 16:15:30 C 01 09 21.03 +18 47 26.2 u 084
2011-11-09 16:18:12 C 01 09 33.81 +18 47 18.1 u 084
2011-11-09 16:18:27 C 01 09 35.06 +18 47 17.2 u 084
2011-11-09 16:18:46 C 01 09 36.54 +18 47 16.4 u 084
2011-11-09 16:19:21 C 01 09 39.28 +18 47 14.4 u 084
2011-11-09 16:19:38 C 01 09 40.62 +18 47 13.6 u 084
2011-11-09 16:33:44 C 01 10 46.50 +18 46 29.3 u 084
2011-11-09 16:34:02 C 01 10 47.89 +18 46 28.5 u 084
2011-11-09 16:34:20 C 01 10 49.26 +18 46 27.6 u 084
2011-11-09 16:35:29 C 01 10 54.52 +18 46 23.9 u 084
2011-11-09 16:35:47 C 01 10 55.92 +18 46 22.9 u 084
2011-11-09 16:36:05 C 01 10 57.26 +18 46 22.0 u 084
2011-11-09 16:36:33 C 01 10 59.44 +18 46 20.5 u 084
2011-11-09 16:36:50 C 01 11 00.71 +18 46 19.7 u 084
2011-11-09 16:37:07 C 01 11 02.06 +18 46 18.7 u 084
2011-11-09 16:37:24 C 01 11 03.34 +18 46 17.8 u 084
2011-11-09 16:37:41 C 01 11 04.58 +18 46 16.9 u 084
2011-11-09 16:37:57 C 01 11 05.86 +18 46 16.0 u 084
2011-11-09 16:38:14 C 01 11 07.11 +18 46 15.2 u 084
2011-11-09 16:38:30 C 01 11 08.39 +18 46 14.2 u 084
2011-11-09 16:38:47 C 01 11 09.64 +18 46 13.4 u 084
2011-11-09 16:39:04 C 01 11 10.90 +18 46 12.6 u 084
2011-11-09 16:39:04 C 01 11 33.37 +18 47 11.4 o C60
2011-11-09 16:39:17 C 01 11 34.44 +18 47 10.1 o C60
2011-11-09 16:39:20 C 01 11 12.14 +18 46 11.6 u 084
2011-11-09 16:39:29 C 01 11 35.34 +18 47 10.0 o C60
2011-11-09 16:39:37 C 01 11 13.44 +18 46 10.9 u 084
2011-11-09 16:39:41 C 01 11 36.26 +18 47 09.7 o C60
2011-11-09 16:39:53 C 01 11 14.70 +18 46 10.0 u 084
2011-11-09 16:39:53 C 01 11 37.23 +18 47 08.9 o C60
2011-11-09 16:40:09 C 01 11 15.94 +18 46 09.2 u 084
2011-11-09 16:40:18 C 01 11 39.11 +18 47 07.7 o C60
2011-11-09 16:40:26 C 01 11 17.20 +18 46 08.2 u 084
2011-11-09 16:40:43 C 01 11 18.45 +18 46 07.3 u 084
2011-11-09 16:41:00 C 01 11 19.72 +18 46 06.5 u 084
2011-11-09 16:41:10 C 01 11 43.11 +18 47 04.9 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)