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 17:04:25 C 01 13 04.01 +18 44 50.3 u 084
2011-11-09 17:04:34 C 01 13 28.00 +18 45 58.3 o C60
2011-11-09 17:04:42 C 01 13 05.24 +18 44 49.3 u 084
2011-11-09 17:04:47 C 01 13 28.99 +18 45 57.6 o C60
2011-11-09 17:05:00 C 01 13 06.54 +18 44 48.3 u 084
2011-11-09 17:05:11 C 01 13 30.75 +18 45 57.1 o C60
2011-11-09 17:05:16 C 01 13 07.73 +18 44 47.5 u 084
2011-11-09 17:05:23 C 01 13 31.64 +18 45 55.7 o C60
2011-11-09 17:05:33 C 01 13 08.93 +18 44 46.5 u 084
2011-11-09 17:05:35 C 01 13 32.51 +18 45 55.5 o C60
2011-11-09 17:05:49 C 01 13 10.14 +18 44 45.7 u 084
2011-11-09 17:06:00 C 01 13 34.35 +18 45 54.4 o C60
2011-11-09 17:06:06 C 01 13 11.35 +18 44 44.6 u 084
2011-11-09 17:06:12 C 01 13 35.23 +18 45 53.6 o C60
2011-11-09 17:06:23 C 01 13 12.55 +18 44 43.8 u 084
2011-11-09 17:06:25 C 01 13 36.08 +18 45 53.7 o C60
2011-11-09 17:06:39 C 01 13 13.74 +18 44 42.9 u 084
2011-11-09 17:06:56 C 01 13 14.93 +18 44 42.0 u 084
2011-11-09 17:07:02 C 01 13 38.79 +18 45 51.6 o C60
2011-11-09 17:07:12 C 01 13 16.13 +18 44 41.0 u 084
2011-11-09 17:07:27 C 01 13 40.62 +18 45 50.2 o C60
2011-11-09 17:07:28 C 01 13 17.34 +18 44 40.2 u 084
2011-11-09 17:07:39 C 01 13 41.49 +18 45 49.8 o C60
2011-11-09 17:07:45 C 01 13 18.51 +18 44 39.3 u 084
2011-11-09 17:07:51 C 01 13 42.36 +18 45 49.0 o C60
2011-11-09 17:08:01 C 01 13 19.71 +18 44 38.3 u 084
2011-11-09 17:08:03 C 01 13 43.30 +18 45 48.1 o C60
2011-11-09 17:08:16 C 01 13 44.18 +18 45 47.6 o C60
2011-11-09 17:08:19 C 01 13 20.89 +18 44 37.5 u 084
2011-11-09 17:08:28 C 01 13 45.06 +18 45 47.4 o C60
2011-11-09 17:08:35 C 01 13 22.11 +18 44 36.5 u 084
2011-11-09 17:08:40 C 01 13 45.98 +18 45 46.5 o C60
2011-11-09 17:08:51 C 01 13 23.30 +18 44 35.6 u 084
2011-11-09 17:08:52 C 01 13 46.85 +18 45 46.1 o C60
2011-11-09 17:09:05 C 01 13 47.79 +18 45 45.3 o C60
2011-11-09 17:09:08 C 01 13 24.50 +18 44 34.7 u 084
2011-11-09 17:09:17 C 01 13 48.65 +18 45 44.5 o C60
2011-11-09 17:09:24 C 01 13 25.66 +18 44 33.8 u 084
2011-11-09 17:09:29 C 01 13 49.55 +18 45 43.7 o C60
2011-11-09 17:09:41 C 01 13 26.87 +18 44 32.8 u 084
2011-11-09 17:09:42 C 01 13 50.43 +18 45 43.7 o C60
2011-11-09 17:09:55 C 01 13 51.32 +18 45 42.8 o C60
2011-11-09 17:09:58 C 01 13 28.07 +18 44 31.9 u 084
2011-11-09 17:10:07 C 01 13 52.22 +18 45 42.1 o C60
2011-11-09 17:10:17 C 01 13 29.44 +18 44 30.8 u 084
2011-11-09 17:10:19 C 01 13 53.07 +18 45 41.4 o C60
2011-11-09 17:10:32 C 01 13 54.01 +18 45 41.0 o C60
2011-11-09 17:10:35 C 01 13 30.78 +18 44 29.7 u 084
2011-11-09 17:10:44 C 01 13 54.87 +18 45 40.5 o C60
2011-11-09 17:10:53 C 01 13 32.08 +18 44 28.8 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)