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 01:12:21 C 01 38 00.20 +18 14 12.1 u 084
2011-11-10 01:12:34 C 01 37 52.719 +18 16 59.73 o 461
2011-11-10 01:12:38 C 01 38 00.83 +18 14 11.2 u 084
2011-11-10 01:12:56 C 01 38 01.48 +18 14 10.3 u 084
2011-11-10 01:12:59 C 01 37 53.624 +18 16 58.15 o 461
2011-11-10 01:13:12 C 01 38 02.11 +18 14 09.2 u 084
2011-11-10 01:13:23 C 01 37 54.531 +18 16 56.57 o 461
2011-11-10 01:13:28 C 01 38 02.72 +18 14 07.9 u 084
2011-11-10 01:13:46 C 01 38 03.35 +18 14 07.2 u 084
2011-11-10 01:13:47 C 01 37 55.411 +18 16 54.74 o 461
2011-11-10 01:14:02 C 01 38 03.98 +18 14 06.0 u 084
2011-11-10 01:14:12 C 01 37 56.294 +18 16 52.89 o 461
2011-11-10 01:14:19 C 01 38 04.56 +18 14 04.8 u 084
2011-11-10 01:14:35 C 01 38 05.18 +18 14 04.0 u 084
2011-11-10 01:14:52 C 01 38 05.82 +18 14 02.8 u 084
2011-11-10 01:15:09 C 01 38 06.45 +18 14 01.8 u 084
2011-11-10 01:15:26 C 01 38 07.05 +18 14 01.0 u 084
2011-11-10 01:15:42 C 01 38 07.68 +18 13 59.6 u 084
2011-11-10 01:15:59 C 01 38 08.32 +18 13 58.7 u 084
2011-11-10 01:16:16 C 01 38 08.92 +18 13 58.0 u 084
2011-11-10 01:16:33 C 01 38 09.52 +18 13 56.5 u 084
2011-11-10 01:16:49 C 01 38 10.17 +18 13 55.7 u 084
2011-11-10 01:17:06 C 01 38 10.79 +18 13 54.6 u 084
2011-11-10 01:17:23 C 01 38 11.40 +18 13 53.5 u 084
2011-11-10 01:17:39 C 01 38 12.01 +18 13 52.5 u 084
2011-11-10 01:17:56 C 01 38 12.64 +18 13 51.4 u 084
2011-11-10 01:18:13 C 01 38 13.27 +18 13 50.4 u 084
2011-11-10 01:18:30 C 01 38 13.87 +18 13 49.4 u 084
2011-11-10 01:18:46 C 01 38 14.51 +18 13 48.5 u 084
2011-11-10 01:19:03 C 01 38 15.13 +18 13 47.5 u 084
2011-11-10 01:19:20 C 01 38 15.74 +18 13 46.4 u 084
2011-11-10 01:19:37 C 01 38 16.36 +18 13 45.5 u 084
2011-11-10 01:19:53 C 01 38 16.95 +18 13 44.1 u 084
2011-11-10 01:20:53 C 01 38 19.20 +18 13 40.5 u 084
2011-11-10 01:21:12 C 01 38 19.85 +18 13 39.4 u 084
2011-11-10 01:21:28 C 01 38 20.48 +18 13 38.6 u 084
2011-11-10 01:21:45 C 01 38 21.08 +18 13 37.2 u 084
2011-11-10 01:22:02 C 01 38 21.73 +18 13 36.3 u 084
2011-11-10 01:22:18 C 01 38 22.34 +18 13 35.2 u 084
2011-11-10 01:22:20 C 01 38 21.51 +18 18 23.8 u 958
2011-11-10 01:22:35 C 01 38 22.94 +18 13 34.1 u 084
2011-11-10 01:22:43 C 01 38 22.30 +18 18 22.4 u 958
2011-11-10 01:22:52 C 01 38 23.57 +18 13 33.1 u 084
2011-11-10 01:23:09 C 01 38 24.19 +18 13 32.1 u 084
2011-11-10 01:23:26 C 01 38 24.81 +18 13 31.0 u 084
2011-11-10 01:23:30 C 01 38 23.90 +18 18 19.2 u 958
2011-11-10 01:23:43 C 01 38 25.43 +18 13 30.1 u 084
2011-11-10 01:23:52 C 01 38 24.71 +18 18 17.9 u 958
2011-11-10 01:24:01 C 01 38 26.12 +18 13 28.7 u 084
2011-11-10 01:24:16 C 01 38 25.52 +18 18 16.9 u 958
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)