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
2011-11-10 02:05:34 C 01 39 56.22 +18 10 57.1 u 084
2011-11-10 02:06:00 C 01 39 57.08 +18 10 55.1 u 084
2011-11-10 02:06:25 C 01 39 58.02 +18 10 53.5 u 084
2011-11-10 02:06:51 C 01 39 58.95 +18 10 52.1 u 084
2011-11-10 02:07:18 C 01 39 59.89 +18 10 50.7 u 084
2011-11-10 02:07:44 C 01 40 00.79 +18 10 48.9 u 084
2011-11-10 02:08:09 C 01 40 01.70 +18 10 47.4 u 084
2011-11-10 02:08:34 C 01 40 02.56 +18 10 46.1 u 084
2011-11-10 02:08:59 C 01 40 03.48 +18 10 43.9 u 084
2011-11-10 02:09:24 C 01 40 04.38 +18 10 42.9 u 084
2011-11-10 02:09:49 C 01 40 05.23 +18 10 41.6 u 084
2011-11-10 02:10:16 C 01 40 06.16 +18 10 39.8 u 084
2011-11-10 02:10:45 C 01 40 07.22 +18 10 38.2 u 084
2011-11-10 02:11:11 C 01 40 08.13 +18 10 36.0 u 084
2011-11-10 02:11:37 C 01 40 09.10 +18 10 34.8 u 084
2011-11-10 02:12:02 C 01 40 09.91 +18 10 33.3 u 084
2011-11-10 02:12:27 C 01 40 10.86 +18 10 31.8 u 084
2011-11-10 02:12:53 C 01 40 11.71 +18 10 30.1 u 084
2011-11-10 02:13:18 C 01 40 12.59 +18 10 28.9 u 084
2011-11-10 02:13:43 C 01 40 13.49 +18 10 27.4 u 084
2011-11-10 02:14:09 C 01 40 14.40 +18 10 25.7 u 084
2011-11-10 02:14:35 C 01 40 15.28 +18 10 24.2 u 084
2011-11-10 02:15:01 C 01 40 16.23 +18 10 22.9 u 084
2011-11-10 02:15:26 C 01 40 17.11 +18 10 20.8 u 084
2011-11-10 02:15:52 C 01 40 18.00 +18 10 19.5 u 084
2011-11-10 02:16:17 C 01 40 18.90 +18 10 17.8 u 084
2011-11-10 02:16:43 C 01 40 19.81 +18 10 16.5 u 084
2011-11-10 02:17:07 C 01 40 20.65 +18 10 15.1 u 084
2011-11-10 02:20:02 C 01 40 26.78 +18 10 04.4 u 084
2011-11-10 02:20:25 C 01 40 27.62 +18 10 02.9 u 084
2011-11-10 02:20:49 C 01 40 28.43 +18 10 01.8 u 084
2011-11-10 02:21:14 C 01 40 29.26 +18 10 00.4 u 084
2011-11-10 02:21:37 C 01 40 30.14 +18 09 59.1 u 084
2011-11-10 02:22:01 C 01 40 30.92 +18 09 57.3 u 084
2011-11-10 02:22:25 C 01 40 31.80 +18 09 56.5 u 084
2011-11-10 02:22:49 C 01 40 32.60 +18 09 54.9 u 084
2011-11-10 02:23:13 C 01 40 33.49 +18 09 53.3 u 084
2011-11-10 02:23:37 C 01 40 34.29 +18 09 51.7 u 084
2011-11-10 02:24:01 C 01 40 35.16 +18 09 50.6 u 084
2011-11-10 02:24:27 C 01 40 36.06 +18 09 48.9 u 084
2011-11-10 02:24:30 C 01 41 51.38 +18 17 40.5 c H06
2011-11-10 02:24:51 C 01 40 36.88 +18 09 47.5 u 084
2011-11-10 02:25:16 C 01 41 52.84 +18 17 38.7 c H06
2011-11-10 02:25:17 C 01 40 37.76 +18 09 46.0 u 084
2011-11-10 02:25:41 C 01 40 38.63 +18 09 44.4 u 084
2011-11-10 02:26:04 C 01 41 54.30 +18 17 36.9 c H06
2011-11-10 02:26:07 C 01 40 39.54 +18 09 43.0 u 084
2011-11-10 02:26:32 C 01 40 40.37 +18 09 41.4 u 084
2011-11-10 02:26:51 C 01 41 55.79 +18 17 34.7 c H06
2011-11-10 02:26:57 C 01 40 41.24 +18 09 40.1 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)