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 17:25:25 C 01 14 33.82 +18 43 40.1 u 084
2011-11-09 17:25:32 C 01 14 58.13 +18 44 56.4 o C60
2011-11-09 17:25:41 C 01 14 35.00 +18 43 39.2 u 084
2011-11-09 17:25:46 C 01 14 59.11 +18 44 55.7 o C60
2011-11-09 17:25:59 C 01 15 00.07 +18 44 55.0 o C60
2011-11-09 17:26:13 C 01 15 00.95 +18 44 54.5 o C60
2011-11-09 17:26:26 C 01 15 01.89 +18 44 54.1 o C60
2011-11-09 17:26:38 C 01 15 02.87 +18 44 53.0 o C60
2011-11-09 17:26:47 C 01 14 39.56 +18 43 35.7 u 084
2011-11-09 17:26:52 C 01 15 03.77 +18 44 52.1 o C60
2011-11-09 17:27:04 C 01 14 40.69 +18 43 34.5 u 084
2011-11-09 17:27:05 C 01 15 04.72 +18 44 51.2 o C60
2011-11-09 17:27:19 C 01 15 05.63 +18 44 50.9 o C60
2011-11-09 17:27:20 C 01 14 41.87 +18 43 33.6 u 084
2011-11-09 17:27:32 C 01 15 06.56 +18 44 50.6 o C60
2011-11-09 17:27:36 C 01 14 43.02 +18 43 32.9 u 084
2011-11-09 17:27:46 C 01 15 07.51 +18 44 49.5 o C60
2011-11-09 17:27:53 C 01 14 44.16 +18 43 31.9 u 084
2011-11-09 17:27:59 C 01 15 08.39 +18 44 49.2 o C60
2011-11-09 17:28:09 C 01 14 45.30 +18 43 30.9 u 084
2011-11-09 17:28:26 C 01 14 46.47 +18 43 30.0 u 084
2011-11-09 17:28:39 C 01 15 11.29 +18 44 46.7 o C60
2011-11-09 17:28:42 C 01 14 47.60 +18 43 29.0 u 084
2011-11-09 17:28:52 C 01 15 12.23 +18 44 46.2 o C60
2011-11-09 17:28:59 C 01 14 48.74 +18 43 28.1 u 084
2011-11-09 17:29:06 C 01 15 13.15 +18 44 46.3 o C60
2011-11-09 17:29:17 C 01 14 50.06 +18 43 27.1 u 084
2011-11-09 17:29:19 C 01 15 14.06 +18 44 44.8 o C60
2011-11-09 17:29:33 C 01 15 15.02 +18 44 43.7 o C60
2011-11-09 17:29:36 C 01 14 51.28 +18 43 26.0 u 084
2011-11-09 17:29:46 C 01 15 15.94 +18 44 43.4 o C60
2011-11-09 17:29:55 C 01 14 52.60 +18 43 24.9 u 084
2011-11-09 17:30:13 C 01 14 53.88 +18 43 23.8 u 084
2011-11-09 17:30:13 C 01 15 17.80 +18 44 42.6 o C60
2011-11-09 17:30:26 C 01 15 18.70 +18 44 41.8 o C60
2011-11-09 17:30:32 C 01 14 55.20 +18 43 22.8 u 084
2011-11-09 17:30:40 C 01 15 19.64 +18 44 41.0 o C60
2011-11-09 17:30:48 C 01 14 56.31 +18 43 22.0 u 084
2011-11-09 17:30:52 C 01 15 20.60 +18 44 40.1 o C60
2011-11-09 17:31:05 C 01 14 57.46 +18 43 20.9 u 084
2011-11-09 17:31:19 C 01 15 22.40 +18 44 38.6 o C60
2011-11-09 17:31:21 C 01 14 58.60 +18 43 20.1 u 084
2011-11-09 17:31:33 C 01 15 23.33 +18 44 38.4 o C60
2011-11-09 17:31:37 C 01 14 59.74 +18 43 19.2 u 084
2011-11-09 17:31:55 C 01 15 00.92 +18 43 18.1 u 084
2011-11-09 17:32:13 C 01 15 02.18 +18 43 17.0 u 084
2011-11-09 17:32:30 C 01 15 03.39 +18 43 16.1 u 084
2011-11-09 17:32:49 C 01 15 04.71 +18 43 15.0 u 084
2011-11-09 17:33:08 C 01 15 05.99 +18 43 14.0 u 084
2011-11-09 17:33:31 C 01 15 07.62 +18 43 12.5 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)