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
2011-11-13 21:15:08 C 02 25 30.86 +16 49 33.3 V 134
2011-11-13 21:15:51 C 02 25 30.91 +16 49 33.1 V 134
2011-11-13 21:16:33 C 02 25 30.97 +16 49 33.0 V 134
2011-11-13 21:16:46 C 02 25 31.27 +16 49 52.1 c 560
2011-11-13 21:17:16 C 02 25 31.02 +16 49 32.8 V 134
2011-11-13 21:18:00 C 02 25 31.07 +16 49 32.8 V 134
2011-11-13 21:18:44 C 02 25 31.12 +16 49 32.5 V 134
2011-11-13 21:19:24 C 02 25 31.44 +16 49 51.6 c 560
2011-11-13 21:19:27 C 02 25 31.18 +16 49 32.3 V 134
2011-11-13 21:20:53 C 02 25 31.27 +16 49 32.0 V 134
2011-11-13 21:21:10 C 02 25 32.09 +16 49 52.4 d B66
2011-11-13 21:21:36 C 02 25 31.33 +16 49 31.9 V 134
2011-11-13 21:22:20 C 02 25 31.38 +16 49 31.8 V 134
2011-11-13 21:23:03 C 02 25 31.43 +16 49 31.5 V 134
2011-11-13 21:23:45 C 02 25 31.48 +16 49 31.4 V 134
2011-11-13 21:24:29 C 02 25 31.53 +16 49 31.3 V 134
2011-11-13 21:25:12 C 02 25 31.58 +16 49 31.1 V 134
2011-11-13 21:25:56 C 02 25 31.64 +16 49 31.0 V 134
2011-11-13 21:26:39 C 02 25 31.68 +16 49 30.8 V 134
2011-11-13 21:27:21 C 02 25 31.74 +16 49 30.6 V 134
2011-11-13 21:28:05 C 02 25 31.78 +16 49 30.4 V 134
2011-11-13 21:28:48 C 02 25 31.84 +16 49 30.2 V 134
2011-11-13 21:29:32 C 02 25 31.90 +16 49 30.0 V 134
2011-11-13 21:30:15 C 02 25 31.94 +16 49 29.9 V 134
2011-11-13 21:30:59 C 02 25 32.00 +16 49 29.7 V 134
2011-11-13 21:31:41 C 02 25 32.05 +16 49 29.6 V 134
2011-11-13 21:32:24 C 02 25 32.11 +16 49 29.5 V 134
2011-11-13 21:33:08 C 02 25 32.15 +16 49 29.2 V 134
2011-11-13 21:33:52 C 02 25 32.20 +16 49 29.2 V 134
2011-11-13 21:34:35 C 02 25 32.26 +16 49 28.9 V 134
2011-11-13 21:35:19 C 02 25 32.31 +16 49 28.8 V 134
2011-11-13 21:36:01 C 02 25 32.36 +16 49 28.6 V 134
2011-11-13 21:36:44 C 02 25 32.41 +16 49 28.4 V 134
2011-11-13 21:37:28 C 02 25 32.46 +16 49 28.2 V 134
2011-11-13 21:38:12 C 02 25 32.52 +16 49 27.9 V 134
2011-11-13 21:38:55 C 02 25 32.56 +16 49 27.9 V 134
2011-11-13 21:39:37 C 02 25 32.60 +16 49 27.6 V 134
2011-11-13 21:40:20 C 02 25 32.67 +16 49 27.5 V 134
2011-11-13 21:41:04 C 02 25 32.72 +16 49 27.4 V 134
2011-11-13 21:41:48 C 02 25 32.78 +16 49 27.3 V 134
2011-11-13 21:42:31 C 02 25 32.82 +16 49 27.0 V 134
2011-11-13 21:43:13 C 02 25 32.87 +16 49 26.9 V 134
2011-11-13 21:43:56 C 02 25 32.93 +16 49 26.7 V 134
2011-11-13 21:44:40 C 02 25 32.97 +16 49 26.3 V 134
2011-11-13 21:45:11 C 02 25 33.63 +16 49 47.2 d B66
2011-11-13 21:45:24 C 02 25 33.01 +16 49 26.2 V 134
2011-11-13 21:46:07 C 02 25 33.07 +16 49 26.1 V 134
2011-11-13 21:46:49 C 02 25 33.12 +16 49 25.9 V 134
2011-11-13 21:47:33 C 02 25 33.18 +16 49 25.7 V 134
2011-11-13 21:48:16 C 02 25 33.23 +16 49 25.5 V 134
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)