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
2011-11-10 01:00:05 C 01 37 32.63 +18 14 58.6 u 084
2011-11-10 01:00:21 C 01 37 33.26 +18 14 57.6 u 084
2011-11-10 01:00:38 C 01 37 33.87 +18 14 56.4 u 084
2011-11-10 01:00:57 C 01 37 34.54 +18 14 55.5 u 084
2011-11-10 01:01:15 C 01 37 35.26 +18 14 54.5 u 084
2011-11-10 01:01:31 C 01 37 35.89 +18 14 53.3 u 084
2011-11-10 01:01:48 C 01 37 36.50 +18 14 52.0 u 084
2011-11-10 01:02:05 C 01 37 37.15 +18 14 51.4 u 084
2011-11-10 01:02:21 C 01 37 37.75 +18 14 49.8 u 084
2011-11-10 01:02:38 C 01 37 38.41 +18 14 49.3 u 084
2011-11-10 01:02:55 C 01 37 39.02 +18 14 47.8 u 084
2011-11-10 01:03:12 C 01 37 39.63 +18 14 47.0 u 084
2011-11-10 01:03:28 C 01 37 40.29 +18 14 46.1 u 084
2011-11-10 01:03:45 C 01 37 40.92 +18 14 44.9 u 084
2011-11-10 01:04:02 C 01 37 41.53 +18 14 44.2 u 084
2011-11-10 01:04:18 C 01 37 42.18 +18 14 42.6 u 084
2011-11-10 01:04:35 C 01 37 42.80 +18 14 42.0 u 084
2011-11-10 01:04:52 C 01 37 43.41 +18 14 40.6 u 084
2011-11-10 01:05:08 C 01 37 44.07 +18 14 40.1 u 084
2011-11-10 01:05:25 C 01 37 44.66 +18 14 39.1 u 084
2011-11-10 01:05:42 C 01 37 45.28 +18 14 37.8 u 084
2011-11-10 01:05:58 C 01 37 45.94 +18 14 36.6 u 084
2011-11-10 01:06:16 C 01 37 46.56 +18 14 35.4 u 084
2011-11-10 01:06:35 C 01 37 47.27 +18 14 34.2 u 084
2011-11-10 01:07:16 C 01 37 41.041 +18 17 20.98 o 461
2011-11-10 01:07:40 C 01 37 41.941 +18 17 19.20 o 461
2011-11-10 01:08:04 C 01 37 42.836 +18 17 17.66 o 461
2011-11-10 01:08:11 C 01 37 50.84 +18 14 28.0 u 084
2011-11-10 01:08:29 C 01 37 43.745 +18 17 15.93 o 461
2011-11-10 01:08:29 C 01 37 51.52 +18 14 27.0 u 084
2011-11-10 01:08:47 C 01 37 52.21 +18 14 25.6 u 084
2011-11-10 01:08:53 C 01 37 44.635 +18 17 14.58 o 461
2011-11-10 01:09:18 C 01 37 45.533 +18 17 12.76 o 461
2011-11-10 01:09:31 C 01 37 53.85 +18 14 22.9 u 084
2011-11-10 01:09:42 C 01 37 46.420 +18 17 11.05 o 461
2011-11-10 01:09:49 C 01 37 54.53 +18 14 21.8 u 084
2011-11-10 01:10:06 C 01 37 47.328 +18 17 09.52 o 461
2011-11-10 01:10:07 C 01 37 55.22 +18 14 20.4 u 084
2011-11-10 01:10:24 C 01 37 55.85 +18 14 19.4 u 084
2011-11-10 01:10:31 C 01 37 48.236 +18 17 08.04 o 461
2011-11-10 01:10:41 C 01 37 56.47 +18 14 18.4 u 084
2011-11-10 01:10:55 C 01 37 49.119 +18 17 05.99 o 461
2011-11-10 01:10:57 C 01 37 57.08 +18 14 17.7 u 084
2011-11-10 01:11:15 C 01 37 57.72 +18 14 16.7 u 084
2011-11-10 01:11:21 C 01 37 50.047 +18 17 04.64 o 461
2011-11-10 01:11:31 C 01 37 58.35 +18 14 15.6 u 084
2011-11-10 01:11:46 C 01 37 50.918 +18 17 02.94 o 461
2011-11-10 01:11:47 C 01 37 58.95 +18 14 14.0 u 084
2011-11-10 01:12:05 C 01 37 59.57 +18 14 13.3 u 084
2011-11-10 01:12:10 C 01 37 51.842 +18 17 01.45 o 461
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)