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
2011-11-15 00:41:09 C 02 27 58.367 +16 43 37.79 o C60
2011-11-15 00:42:02 C 02 27 57.99 +16 43 38.6 w B82
2011-11-15 00:43:49 C 02 27 58.499 +16 43 37.11 o C60
2011-11-15 00:44:01 C 02 27 57.65 +16 43 07.8 15.7 u 084
2011-11-15 00:46:28 C 02 27 58.617 +16 43 36.30 o C60
2011-11-15 00:47:12 C 02 27 57.86 +16 43 06.8 15.9 u 084
2011-11-15 00:50:03 C 02 27 58.795 +16 43 35.43 o C60
2011-11-15 00:50:22 C 02 27 58.11 +16 43 05.7 16.9 u 084
2011-11-15 00:52:21 C 02 27 58.50 +16 43 35.8 w B82
2011-11-15 00:52:41 C 02 27 58.926 +16 43 34.72 o C60
2011-11-15 00:55:20 C 02 27 59.060 +16 43 34.26 o C60
2011-11-15 00:56:43 C 02 27 58.51 +16 43 04.0 16.4 u 084
2011-11-15 00:58:00 C 02 27 59.197 +16 43 33.31 o C60
2011-11-15 00:59:53 C 02 27 58.68 +16 43 03.4 15.9 u 084
2011-11-15 01:00:40 C 02 27 59.329 +16 43 32.81 o C60
2011-11-15 01:03:02 C 02 27 58.86 +16 43 02.5 15.8 u 084
2011-11-15 01:03:19 C 02 27 59.453 +16 43 31.93 o C60
2011-11-15 01:05:57 C 02 27 59.606 +16 43 31.38 o C60
2011-11-15 01:06:11 C 02 27 59.08 +16 43 01.6 15.8 u 084
2011-11-15 01:06:44 C 02 27 59.23 +16 43 32.0 w B82
2011-11-15 01:08:37 C 02 27 59.731 +16 43 30.41 o C60
2011-11-15 01:09:21 C 02 27 59.28 +16 43 00.6 15.7 u 084
2011-11-15 01:12:31 C 02 27 59.48 +16 42 59.9 15.8 u 084
2011-11-15 01:13:56 C 02 27 59.994 +16 43 28.95 o C60
2011-11-15 01:15:41 C 02 27 59.70 +16 42 59.0 15.8 u 084
2011-11-15 01:16:35 C 02 28 00.124 +16 43 28.34 o C60
2011-11-15 01:18:51 C 02 27 59.87 +16 42 58.2 16.0 u 084
2011-11-15 01:19:15 C 02 28 00.266 +16 43 27.75 o C60
2011-11-15 01:21:54 C 02 28 00.410 +16 43 27.02 o C60
2011-11-15 01:22:07 C 02 28 00.12 +16 42 57.4 16.1 u 084
2011-11-15 01:24:33 C 02 28 00.495 +16 43 26.51 o C60
2011-11-15 01:25:16 C 02 28 00.33 +16 42 56.5 16.0 u 084
2011-11-15 01:27:13 C 02 28 00.666 +16 43 25.52 o C60
2011-11-15 01:28:25 C 02 28 00.54 +16 42 55.6 15.9 u 084
2011-11-15 01:29:52 C 02 28 00.779 +16 43 24.77 o C60
2011-11-15 01:31:35 C 02 28 00.74 +16 42 54.6 15.8 u 084
2011-11-15 01:32:32 C 02 28 00.918 +16 43 24.03 o C60
2011-11-15 01:34:44 C 02 28 00.98 +16 42 53.8 15.8 u 084
2011-11-15 01:35:11 C 02 28 01.050 +16 43 23.57 o C60
2011-11-15 01:37:50 C 02 28 01.220 +16 43 22.36 o C60
2011-11-15 01:37:55 C 02 28 01.17 +16 42 52.9 15.8 u 084
2011-11-15 01:40:29 C 02 28 01.366 +16 43 21.70 o C60
2011-11-15 01:41:04 C 02 28 01.37 +16 42 52.2 15.9 u 084
2011-11-15 01:43:08 C 02 28 01.503 +16 43 21.31 o C60
2011-11-15 01:44:14 C 02 28 01.59 +16 42 51.5 16.0 u 084
2011-11-15 01:45:48 C 02 28 01.645 +16 43 20.46 o C60
2011-11-15 01:47:24 C 02 28 01.81 +16 42 50.4 15.9 u 084
2011-11-15 01:48:27 C 02 28 01.768 +16 43 19.78 o C60
2011-11-15 01:51:06 C 02 28 01.948 +16 43 19.05 o C60
2011-11-15 01:53:46 C 02 28 02.076 +16 43 18.20 o C60
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)