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 22:38:49 C 01 31 39.230 +18 27 11.42 r 089
2011-11-09 22:39:45 C 01 31 41.659 +18 27 07.49 r 089
2011-11-09 22:40:34 C 01 32 05.30 +18 26 35.6 u B86
2011-11-09 22:40:41 C 01 31 44.049 +18 27 03.42 r 089
2011-11-09 22:40:53 C 01 32 03.44 +18 28 06.9 u B39
2011-11-09 22:41:37 C 01 31 46.462 +18 26 59.71 r 089
2011-11-09 22:42:14 C 01 32 09.57 +18 26 29.3 u B86
2011-11-09 22:42:33 C 01 31 48.883 +18 26 55.69 r 089
2011-11-09 22:43:29 C 01 31 51.295 +18 26 51.78 r 089
2011-11-09 22:43:37 C 01 32 10.35 +18 27 56.1 u B39
2011-11-09 22:43:54 C 01 32 13.80 +18 26 22.9 u B86
2011-11-09 22:44:25 C 01 31 53.709 +18 26 47.84 r 089
2011-11-09 22:45:21 C 01 31 56.125 +18 26 43.93 r 089
2011-11-09 22:45:34 C 01 32 18.03 +18 26 16.6 u B86
2011-11-09 22:46:17 C 01 31 58.486 +18 26 39.94 r 089
2011-11-09 22:46:18 C 01 32 17.12 +18 27 45.7 u B39
2011-11-09 22:47:13 C 01 32 00.900 +18 26 36.06 r 089
2011-11-09 22:47:16 C 01 32 22.36 +18 26 10.1 u B86
2011-11-09 22:49:05 C 01 32 05.690 +18 26 27.56 r 089
2011-11-09 22:50:01 C 01 32 08.066 +18 26 23.84 r 089
2011-11-09 22:50:13 C 01 32 26.93 +18 27 30.2 u B39
2011-11-09 22:54:38 C 01 32 37.94 +18 27 12.8 u B39
2011-11-09 23:00:46 C 01 32 53.16 +18 26 48.7 u B39
2011-11-09 23:04:21 C 01 33 02.00 +18 26 34.6 u B39
2011-11-09 23:04:57 C 01 33 08.83 +18 27 52.1 w C35
2011-11-09 23:05:11 C 01 33 09.36 +18 27 50.8 w C35
2011-11-09 23:05:28 C 01 33 10.05 +18 27 50.2 w C35
2011-11-09 23:06:49 C 01 33 13.38 +18 27 44.9 w C35
2011-11-09 23:07:03 C 01 33 13.89 +18 27 44.1 w C35
2011-11-09 23:07:20 C 01 33 14.55 +18 27 42.7 w C35
2011-11-09 23:08:41 C 01 33 17.87 +18 27 37.2 w C35
2011-11-09 23:08:55 C 01 33 18.43 +18 27 36.4 w C35
2011-11-09 23:09:11 C 01 33 19.06 +18 27 35.4 w C35
2011-11-09 23:10:33 C 01 33 22.35 +18 27 30.7 w C35
2011-11-09 23:10:46 C 01 33 22.91 +18 27 29.6 w C35
2011-11-09 23:11:03 C 01 33 23.57 +18 27 28.9 w C35
2011-11-09 23:12:25 C 01 33 26.90 +18 27 22.7 w C35
2011-11-09 23:12:39 C 01 33 27.44 +18 27 21.5 w C35
2011-11-09 23:12:54 C 01 33 28.06 +18 27 20.5 w C35
2011-11-09 23:14:17 C 01 33 31.39 +18 27 15.2 w C35
2011-11-09 23:14:32 C 01 33 31.90 +18 27 13.5 w C35
2011-11-09 23:14:47 C 01 33 32.59 +18 27 13.6 w C35
2011-11-09 23:16:10 C 01 33 35.86 +18 27 08.1 w C35
2011-11-09 23:16:23 C 01 33 36.40 +18 27 07.3 w C35
2011-11-09 23:16:40 C 01 33 37.07 +18 27 05.8 w C35
2011-11-09 23:18:02 C 01 33 40.33 +18 27 00.7 w C35
2011-11-09 23:18:16 C 01 33 40.92 +18 27 00.0 w C35
2011-11-09 23:18:31 C 01 33 41.53 +18 26 58.8 w C35
2011-11-09 23:19:54 C 01 33 44.86 +18 26 53.7 w C35
2011-11-09 23:20:07 C 01 33 45.32 +18 26 52.8 w C35
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)