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 01:40:33 C 01 39 02.39 +18 12 27.8 u 084
2011-11-10 01:40:52 C 01 39 03.07 +18 12 26.7 u 084
2011-11-10 01:41:01 C 01 38 55.54 +18 15 09.5 u 118
2011-11-10 01:41:11 C 01 39 03.73 +18 12 25.4 u 084
2011-11-10 01:41:30 C 01 39 04.42 +18 12 24.4 u 084
2011-11-10 01:41:49 C 01 39 05.14 +18 12 23.2 u 084
2011-11-10 01:42:07 C 01 39 05.81 +18 12 22.1 u 084
2011-11-10 01:42:26 C 01 39 06.47 +18 12 20.8 u 084
2011-11-10 01:42:46 C 01 39 07.19 +18 12 19.8 u 084
2011-11-10 01:43:05 C 01 39 07.87 +18 12 18.3 u 084
2011-11-10 01:43:24 C 01 39 08.56 +18 12 17.4 u 084
2011-11-10 01:43:43 C 01 39 09.25 +18 12 16.3 u 084
2011-11-10 01:43:52 C 01 39 01.61 +18 14 58.4 u 118
2011-11-10 01:44:01 C 01 39 09.94 +18 12 15.1 u 084
2011-11-10 01:44:19 C 01 39 10.56 +18 12 14.0 u 084
2011-11-10 01:44:36 C 01 39 11.17 +18 12 13.0 u 084
2011-11-10 01:44:52 C 01 39 11.75 +18 12 12.2 u 084
2011-11-10 01:45:09 C 01 39 12.36 +18 12 10.9 u 084
2011-11-10 01:45:26 C 01 39 12.95 +18 12 09.8 u 084
2011-11-10 01:45:42 C 01 39 13.57 +18 12 08.8 u 084
2011-11-10 01:46:01 C 01 39 14.22 +18 12 07.7 u 084
2011-11-10 01:46:43 C 01 39 07.66 +18 14 47.0 u 118
2011-11-10 01:49:35 C 01 39 13.69 +18 14 36.2 u 118
2011-11-10 01:53:26 C 01 39 30.25 +18 11 40.7 u 084
2011-11-10 01:54:01 C 01 39 31.47 +18 11 38.9 u 084
2011-11-10 01:54:27 C 01 39 32.40 +18 11 37.0 u 084
2011-11-10 01:54:52 C 01 39 33.36 +18 11 35.4 u 084
2011-11-10 01:55:18 C 01 39 34.24 +18 11 33.7 u 084
2011-11-10 01:56:09 C 01 39 36.08 +18 11 30.9 u 084
2011-11-10 01:56:34 C 01 39 36.98 +18 11 28.9 u 084
2011-11-10 01:57:00 C 01 39 37.96 +18 11 27.5 u 084
2011-11-10 01:57:27 C 01 39 38.86 +18 11 25.9 u 084
2011-11-10 01:57:53 C 01 39 39.79 +18 11 24.6 u 084
2011-11-10 01:58:18 C 01 39 40.68 +18 11 22.9 u 084
2011-11-10 01:58:44 C 01 39 41.62 +18 11 21.4 u 084
2011-11-10 01:59:10 C 01 39 42.53 +18 11 20.3 u 084
2011-11-10 01:59:36 C 01 39 43.46 +18 11 18.3 u 084
2011-11-10 02:00:01 C 01 39 44.35 +18 11 17.1 u 084
2011-11-10 02:00:28 C 01 39 45.30 +18 11 15.3 u 084
2011-11-10 02:00:53 C 01 39 46.20 +18 11 13.9 u 084
2011-11-10 02:01:19 C 01 39 47.11 +18 11 12.5 u 084
2011-11-10 02:01:44 C 01 39 48.02 +18 11 10.4 u 084
2011-11-10 02:02:09 C 01 39 48.89 +18 11 08.9 u 084
2011-11-10 02:02:35 C 01 39 49.78 +18 11 07.7 u 084
2011-11-10 02:03:01 C 01 39 50.74 +18 11 06.0 u 084
2011-11-10 02:03:27 C 01 39 51.70 +18 11 04.4 u 084
2011-11-10 02:03:52 C 01 39 52.56 +18 11 02.5 u 084
2011-11-10 02:04:18 C 01 39 53.48 +18 11 01.5 u 084
2011-11-10 02:04:43 C 01 39 54.37 +18 10 59.9 u 084
2011-11-10 02:05:09 C 01 39 55.29 +18 10 58.2 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)