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 00:43:50 C 01 36 55.60 +18 15 59.6 u 084
2011-11-10 00:44:07 C 01 36 56.21 +18 15 58.2 u 084
2011-11-10 00:44:23 C 01 36 56.86 +18 15 57.3 u 084
2011-11-10 00:44:40 C 01 36 57.50 +18 15 56.5 u 084
2011-11-10 00:44:56 C 01 36 58.13 +18 15 55.3 u 084
2011-11-10 00:45:13 C 01 36 58.80 +18 15 54.3 u 084
2011-11-10 00:45:30 C 01 36 59.40 +18 15 53.2 u 084
2011-11-10 00:45:46 C 01 37 00.05 +18 15 52.2 u 084
2011-11-10 00:46:03 C 01 37 00.69 +18 15 51.1 u 084
2011-11-10 00:46:20 C 01 37 01.32 +18 15 49.9 u 084
2011-11-10 00:46:36 C 01 37 01.98 +18 15 49.0 u 084
2011-11-10 00:46:54 C 01 37 02.60 +18 15 47.9 u 084
2011-11-10 00:47:10 C 01 37 03.25 +18 15 46.9 u 084
2011-11-10 00:47:26 C 01 37 03.89 +18 15 45.8 u 084
2011-11-10 00:47:44 C 01 37 04.53 +18 15 44.7 u 084
2011-11-10 00:48:00 C 01 37 05.17 +18 15 43.9 u 084
2011-11-10 00:48:17 C 01 37 05.79 +18 15 42.8 u 084
2011-11-10 00:48:34 C 01 37 06.42 +18 15 41.8 u 084
2011-11-10 00:48:50 C 01 37 07.07 +18 15 40.5 u 084
2011-11-10 00:49:07 C 01 37 07.69 +18 15 39.5 u 084
2011-11-10 00:49:24 C 01 37 08.35 +18 15 38.7 u 084
2011-11-10 00:49:40 C 01 37 08.96 +18 15 37.5 u 084
2011-11-10 00:49:58 C 01 37 09.61 +18 15 36.5 u 084
2011-11-10 00:50:14 C 01 37 10.26 +18 15 35.6 u 084
2011-11-10 00:50:32 C 01 37 10.94 +18 15 34.3 u 084
2011-11-10 00:50:49 C 01 37 11.58 +18 15 33.2 u 084
2011-11-10 00:51:06 C 01 37 12.21 +18 15 32.2 u 084
2011-11-10 00:51:22 C 01 37 12.84 +18 15 31.1 u 084
2011-11-10 00:51:40 C 01 37 13.49 +18 15 30.1 u 084
2011-11-10 00:51:56 C 01 37 14.13 +18 15 29.0 u 084
2011-11-10 00:52:12 C 01 37 14.77 +18 15 27.9 u 084
2011-11-10 00:52:30 C 01 37 15.40 +18 15 26.9 u 084
2011-11-10 00:52:46 C 01 37 16.01 +18 15 25.9 u 084
2011-11-10 00:53:02 C 01 37 16.69 +18 15 24.9 u 084
2011-11-10 00:53:20 C 01 37 17.30 +18 15 23.9 u 084
2011-11-10 00:53:36 C 01 37 17.94 +18 15 22.8 u 084
2011-11-10 00:53:53 C 01 37 18.55 +18 15 21.6 u 084
2011-11-10 00:54:09 C 01 37 19.20 +18 15 20.6 u 084
2011-11-10 00:54:26 C 01 37 19.84 +18 15 19.5 u 084
2011-11-10 00:54:43 C 01 37 20.46 +18 15 18.5 u 084
2011-11-10 00:54:59 C 01 37 21.09 +18 15 17.2 u 084
2011-11-10 00:55:16 C 01 37 21.71 +18 15 16.3 u 084
2011-11-10 00:57:42 C 01 37 27.24 +18 15 07.6 u 084
2011-11-10 00:58:00 C 01 37 27.91 +18 15 06.1 u 084
2011-11-10 00:58:18 C 01 37 28.57 +18 15 05.1 u 084
2011-11-10 00:58:35 C 01 37 29.25 +18 15 04.1 u 084
2011-11-10 00:58:53 C 01 37 29.91 +18 15 02.9 u 084
2011-11-10 00:59:11 C 01 37 30.60 +18 15 01.9 u 084
2011-11-10 00:59:29 C 01 37 31.27 +18 15 00.9 u 084
2011-11-10 00:59:47 C 01 37 31.95 +18 14 59.7 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)