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 16:41:16 C 01 11 20.97 +18 46 05.5 u 084
2011-11-09 16:41:22 C 01 11 44.03 +18 47 04.8 o C60
2011-11-09 16:41:32 C 01 11 22.22 +18 46 04.6 u 084
2011-11-09 16:41:35 C 01 11 44.98 +18 47 04.0 o C60
2011-11-09 16:41:47 C 01 11 45.95 +18 47 03.6 o C60
2011-11-09 16:41:49 C 01 11 23.48 +18 46 03.8 u 084
2011-11-09 16:42:06 C 01 11 24.75 +18 46 02.8 u 084
2011-11-09 16:42:23 C 01 11 25.99 +18 46 02.0 u 084
2011-11-09 16:42:37 C 01 11 49.73 +18 47 00.9 o C60
2011-11-09 16:42:39 C 01 11 27.25 +18 46 01.0 u 084
2011-11-09 16:42:49 C 01 11 50.69 +18 47 00.5 o C60
2011-11-09 16:42:57 C 01 11 28.62 +18 46 00.1 u 084
2011-11-09 16:43:01 C 01 11 51.62 +18 46 59.7 o C60
2011-11-09 16:43:14 C 01 11 29.86 +18 45 59.2 u 084
2011-11-09 16:43:30 C 01 11 31.13 +18 45 58.4 u 084
2011-11-09 16:43:32 C 01 11 53.83 +18 46 59.4 o C60
2011-11-09 16:43:44 C 01 11 54.80 +18 46 58.1 o C60
2011-11-09 16:43:46 C 01 11 32.37 +18 45 57.3 u 084
2011-11-09 16:43:57 C 01 11 55.79 +18 46 57.6 o C60
2011-11-09 16:44:03 C 01 11 33.61 +18 45 56.4 u 084
2011-11-09 16:44:09 C 01 11 56.73 +18 46 56.7 o C60
2011-11-09 16:44:21 C 01 11 57.63 +18 46 56.5 o C60
2011-11-09 16:44:22 C 01 11 34.99 +18 45 55.5 u 084
2011-11-09 16:44:33 C 01 11 58.58 +18 46 56.0 o C60
2011-11-09 16:44:40 C 01 11 36.35 +18 45 54.6 u 084
2011-11-09 16:44:46 C 01 11 59.48 +18 46 55.0 o C60
2011-11-09 16:44:58 C 01 12 00.47 +18 46 54.2 o C60
2011-11-09 16:44:59 C 01 11 37.81 +18 45 53.7 u 084
2011-11-09 16:45:11 C 01 12 01.41 +18 46 53.9 o C60
2011-11-09 16:45:17 C 01 11 39.18 +18 45 52.6 u 084
2011-11-09 16:45:23 C 01 12 02.33 +18 46 52.9 o C60
2011-11-09 16:45:35 C 01 11 40.53 +18 45 51.7 u 084
2011-11-09 16:45:35 C 01 12 03.28 +18 46 53.3 o C60
2011-11-09 16:45:47 C 01 12 04.20 +18 46 51.6 o C60
2011-11-09 16:45:53 C 01 11 41.87 +18 45 50.6 u 084
2011-11-09 16:46:12 C 01 11 43.26 +18 45 49.8 u 084
2011-11-09 16:46:25 C 01 12 07.07 +18 46 49.8 o C60
2011-11-09 16:46:42 C 01 11 45.55 +18 45 48.0 u 084
2011-11-09 16:47:00 C 01 11 46.89 +18 45 47.0 u 084
2011-11-09 16:47:15 C 01 12 10.79 +18 46 47.8 o C60
2011-11-09 16:47:18 C 01 11 48.25 +18 45 46.2 u 084
2011-11-09 16:47:35 C 01 11 49.59 +18 45 45.1 u 084
2011-11-09 16:47:53 C 01 11 50.93 +18 45 44.3 u 084
2011-11-09 16:48:04 C 01 12 14.44 +18 46 45.3 o C60
2011-11-09 16:48:12 C 01 11 52.28 +18 45 43.2 u 084
2011-11-09 16:48:30 C 01 11 53.63 +18 45 42.3 u 084
2011-11-09 16:48:48 C 01 11 54.99 +18 45 41.2 u 084
2011-11-09 16:48:52 C 01 12 18.16 +18 46 43.0 o C60
2011-11-09 16:49:05 C 01 12 19.13 +18 46 43.2 o C60
2011-11-09 16:49:06 C 01 11 56.33 +18 45 40.3 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)