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 17:51:06 C 01 16 19.17 +18 42 12.1 u 084
2011-11-09 17:51:24 C 01 16 20.38 +18 42 10.9 u 084
2011-11-09 17:51:42 C 01 16 21.57 +18 42 10.0 u 084
2011-11-09 17:51:59 C 01 16 22.75 +18 42 08.9 u 084
2011-11-09 17:52:16 C 01 16 23.94 +18 42 07.9 u 084
2011-11-09 17:52:35 C 01 16 25.12 +18 42 06.9 u 084
2011-11-09 17:52:53 C 01 16 26.33 +18 42 05.8 u 084
2011-11-09 17:53:11 C 01 16 27.53 +18 42 04.6 u 084
2011-11-09 17:53:29 C 01 16 28.69 +18 42 03.9 u 084
2011-11-09 17:53:46 C 01 16 29.92 +18 42 02.7 u 084
2011-11-09 17:54:04 C 01 16 31.14 +18 42 01.5 u 084
2011-11-09 17:54:23 C 01 16 32.28 +18 42 00.5 u 084
2011-11-09 17:54:40 C 01 16 33.48 +18 41 59.5 u 084
2011-11-09 17:54:58 C 01 16 34.65 +18 41 58.6 u 084
2011-11-09 17:55:16 C 01 16 35.87 +18 41 57.3 u 084
2011-11-09 17:55:33 C 01 16 37.04 +18 41 56.4 u 084
2011-11-09 17:55:52 C 01 16 38.24 +18 41 55.3 u 084
2011-11-09 17:56:10 C 01 16 39.42 +18 41 54.2 u 084
2011-11-09 17:56:28 C 01 16 40.61 +18 41 53.2 u 084
2011-11-09 17:56:45 C 01 16 41.73 +18 41 52.3 u 084
2011-11-09 17:57:03 C 01 16 42.98 +18 41 51.1 u 084
2011-11-09 17:57:21 C 01 16 44.17 +18 41 50.1 u 084
2011-11-09 17:57:39 C 01 16 45.33 +18 41 49.1 u 084
2011-11-09 17:57:57 C 01 16 46.55 +18 41 48.0 u 084
2011-11-09 17:58:15 C 01 16 47.72 +18 41 47.1 u 084
2011-11-09 17:58:33 C 01 16 48.90 +18 41 46.1 u 084
2011-11-09 17:58:51 C 01 16 50.11 +18 41 44.8 u 084
2011-11-09 17:59:09 C 01 16 51.27 +18 41 44.0 u 084
2011-11-09 17:59:27 C 01 16 52.46 +18 41 42.8 u 084
2011-11-09 17:59:45 C 01 16 53.66 +18 41 41.7 u 084
2011-11-09 18:00:02 C 01 16 54.77 +18 41 40.9 u 084
2011-11-09 18:00:19 C 01 16 55.94 +18 41 39.7 u 084
2011-11-09 18:00:38 C 01 16 57.13 +18 41 38.7 u 084
2011-11-09 18:00:56 C 01 16 58.31 +18 41 37.6 u 084
2011-11-09 18:29:00 C 01 19 22.51 +18 44 13.1 w 213
2011-11-09 18:32:40 C 01 19 36.42 +18 44 00.3 r B49
2011-11-09 18:39:41 C 01 19 46.22 +18 41 23.9 r A35
2011-11-09 18:41:03 C 01 20 07.35 +18 43 33.9 r B49
2011-11-09 18:43:01 C 01 20 02.83 +18 40 30.2 u C39
2011-11-09 18:43:05 C 01 19 38.74 +18 39 07.4 u 084
2011-11-09 18:44:47 C 01 19 45.03 +18 39 01.0 u 084
2011-11-09 18:45:04 C 01 19 46.02 +18 39 00.0 u 084
2011-11-09 18:45:22 C 01 19 47.15 +18 38 58.8 u 084
2011-11-09 18:45:28 C 01 20 13.36 +18 42 04.8 u B67
2011-11-09 18:45:37 C 01 20 07.90 +18 41 04.1 r A35
2011-11-09 18:45:39 C 01 19 48.21 +18 38 57.9 u 084
2011-11-09 18:45:58 C 01 19 49.39 +18 38 56.7 u 084
2011-11-09 18:47:14 C 01 19 54.03 +18 38 52.2 u 084
2011-11-09 18:47:23 C 01 20 20.25 +18 41 58.6 u B67
2011-11-09 18:47:32 C 01 19 55.11 +18 38 50.9 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)