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 01:24:20 C 01 38 26.81 +18 13 27.6 u 084
2011-11-10 01:24:39 C 01 38 27.49 +18 13 26.7 u 084
2011-11-10 01:24:58 C 01 38 28.21 +18 13 25.5 u 084
2011-11-10 01:25:17 C 01 38 28.92 +18 13 24.2 u 084
2011-11-10 01:25:36 C 01 38 29.60 +18 13 22.9 u 084
2011-11-10 01:25:55 C 01 38 30.33 +18 13 22.0 u 084
2011-11-10 01:26:14 C 01 38 31.00 +18 13 20.7 u 084
2011-11-10 01:26:33 C 01 38 31.70 +18 13 19.6 u 084
2011-11-10 01:26:52 C 01 38 32.40 +18 13 18.2 u 084
2011-11-10 01:27:11 C 01 38 33.10 +18 13 17.2 u 084
2011-11-10 01:27:29 C 01 38 33.80 +18 13 16.1 u 084
2011-11-10 01:27:48 C 01 38 34.45 +18 13 14.6 u 084
2011-11-10 01:28:07 C 01 38 35.17 +18 13 13.6 u 084
2011-11-10 01:28:26 C 01 38 35.88 +18 13 12.6 u 084
2011-11-10 01:28:45 C 01 38 36.56 +18 13 11.1 u 084
2011-11-10 01:29:04 C 01 38 37.27 +18 13 10.1 u 084
2011-11-10 01:29:23 C 01 38 37.94 +18 13 08.8 u 084
2011-11-10 01:29:42 C 01 38 38.66 +18 13 07.6 u 084
2011-11-10 01:30:01 C 01 38 39.34 +18 13 06.5 u 084
2011-11-10 01:30:20 C 01 38 40.03 +18 13 05.6 u 084
2011-11-10 01:30:39 C 01 38 40.72 +18 13 04.3 u 084
2011-11-10 01:30:58 C 01 38 41.43 +18 13 03.0 u 084
2011-11-10 01:31:17 C 01 38 42.16 +18 13 01.9 u 084
2011-11-10 01:31:36 C 01 38 42.80 +18 13 00.4 u 084
2011-11-10 01:32:13 C 01 38 44.18 +18 12 58.2 u 084
2011-11-10 01:32:33 C 01 38 44.90 +18 12 57.2 u 084
2011-11-10 01:32:52 C 01 38 45.59 +18 12 56.0 u 084
2011-11-10 01:33:56 C 01 38 47.93 +18 12 52.1 u 084
2011-11-10 01:34:15 C 01 38 48.61 +18 12 51.0 u 084
2011-11-10 01:34:34 C 01 38 49.33 +18 12 49.8 u 084
2011-11-10 01:34:53 C 01 38 50.02 +18 12 48.5 u 084
2011-11-10 01:35:12 C 01 38 50.72 +18 12 47.6 u 084
2011-11-10 01:35:19 C 01 38 43.38 +18 15 31.9 u 118
2011-11-10 01:35:31 C 01 38 51.43 +18 12 46.2 u 084
2011-11-10 01:35:50 C 01 38 52.08 +18 12 45.0 u 084
2011-11-10 01:36:09 C 01 38 52.78 +18 12 43.6 u 084
2011-11-10 01:36:28 C 01 38 53.48 +18 12 42.7 u 084
2011-11-10 01:36:47 C 01 38 54.17 +18 12 41.5 u 084
2011-11-10 01:37:06 C 01 38 54.88 +18 12 40.6 u 084
2011-11-10 01:37:25 C 01 38 55.56 +18 12 39.4 u 084
2011-11-10 01:37:44 C 01 38 56.25 +18 12 38.1 u 084
2011-11-10 01:38:02 C 01 38 56.91 +18 12 36.7 u 084
2011-11-10 01:38:10 C 01 38 49.46 +18 15 20.7 u 118
2011-11-10 01:38:21 C 01 38 57.58 +18 12 35.8 u 084
2011-11-10 01:38:40 C 01 38 58.26 +18 12 34.6 u 084
2011-11-10 01:38:59 C 01 38 58.94 +18 12 33.6 u 084
2011-11-10 01:39:18 C 01 38 59.63 +18 12 32.6 u 084
2011-11-10 01:39:36 C 01 39 00.29 +18 12 31.2 u 084
2011-11-10 01:39:55 C 01 39 01.01 +18 12 30.1 u 084
2011-11-10 01:40:14 C 01 39 01.67 +18 12 28.9 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)