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 18:53:53 C 02 02 52.33 +17 36 20.4 u 084
2011-11-10 18:54:19 C 02 03 09.14 +17 37 46.1 u 958
2011-11-10 18:55:30 C 02 02 53.56 +17 36 18.0 u 084
2011-11-10 18:56:25 C 02 03 10.72 +17 37 44.4 u 958
2011-11-10 18:57:26 C 02 02 54.95 +17 36 15.5 12.9 u 084
2011-11-10 18:58:20 C 02 03 12.12 +17 37 42.5 u 958
2011-11-10 18:59:04 C 02 02 56.12 +17 36 13.4 12.9 u 084
2011-11-10 19:00:03 C 02 03 13.43 +17 37 40.6 u 958
2011-11-10 19:00:10 C 02 02 57.01 +17 36 12.1 14.0 u 084
2011-11-10 19:01:09 C 02 02 57.67 +17 36 10.7 13.9 u 084
2011-11-10 19:01:58 C 02 03 14.86 +17 37 39.7 u 958
2011-11-10 19:02:08 C 02 02 58.39 +17 36 08.7 13.9 u 084
2011-11-10 19:03:54 C 02 03 16.22 +17 37 36.4 u 958
2011-11-10 19:04:11 C 02 02 59.84 +17 36 06.6 13.6 u 084
2011-11-10 19:05:00 C 02 03 00.42 +17 36 05.6 13.7 u 084
2011-11-10 19:05:48 C 02 03 01.02 +17 36 04.3 13.4 u 084
2011-11-10 19:05:49 C 02 03 17.59 +17 37 34.1 u 958
2011-11-10 19:07:44 C 02 03 18.86 +17 37 33.0 u 958
2011-11-10 19:09:19 C 02 03 03.59 +17 35 59.4 u 084
2011-11-10 19:10:56 C 02 03 04.77 +17 35 57.3 u 084
2011-11-10 19:11:34 C 02 03 21.75 +17 37 28.6 u 958
2011-11-10 19:11:53 C 02 03 05.45 +17 35 56.0 u 084
2011-11-10 19:13:28 C 02 03 23.11 +17 37 27.5 u 958
2011-11-10 19:13:31 C 02 03 06.61 +17 35 53.8 u 084
2011-11-10 19:14:26 C 02 03 07.30 +17 35 52.4 13.1 u 084
2011-11-10 19:15:16 C 02 03 07.88 +17 35 51.3 13.1 u 084
2011-11-10 19:15:23 C 02 03 24.57 +17 37 25.1 u 958
2011-11-10 19:16:04 C 02 03 08.45 +17 35 50.3 13.1 u 084
2011-11-10 19:17:09 C 02 03 09.23 +17 35 49.0 13.5 u 084
2011-11-10 19:18:08 C 02 03 09.93 +17 35 47.7 13.9 u 084
2011-11-10 19:19:12 C 02 03 10.72 +17 35 45.6 13.5 u 084
2011-11-10 19:19:13 C 02 03 27.27 +17 37 20.4 u 958
2011-11-10 19:20:01 C 02 03 11.25 +17 35 45.0 13.6 u 084
2011-11-10 19:21:08 C 02 03 28.72 +17 37 17.9 u 958
2011-11-10 19:23:32 C 02 03 13.80 +17 35 39.9 u 084
2011-11-10 19:24:45 C 02 03 14.65 +17 35 38.2 u 084
2011-11-10 20:03:18 C 02 03 53.04 +17 36 48.1 u B33
2011-11-10 20:15:19 C 02 04 00.93 +17 36 33.1 u B33
2011-11-10 20:18:55 C 02 04 08.38 +17 36 12.8 u 958
2011-11-10 20:19:07 C 02 04 08.62 +17 36 10.5 u 958
2011-11-10 20:20:38 C 02 04 09.61 +17 36 11.6 u 958
2011-11-10 20:22:33 C 02 04 10.82 +17 36 07.8 u 958
2011-11-10 20:28:19 C 02 04 14.57 +17 36 01.9 u 958
2011-11-10 20:30:04 C 02 04 10.30 +17 36 09.7 u 104
2011-11-10 20:30:14 C 02 04 15.84 +17 36 00.1 u 958
2011-11-10 20:30:17 C 02 04 10.60 +17 36 14.2 u B33
2011-11-10 20:32:09 C 02 04 17.11 +17 35 57.4 u 958
2011-11-10 20:32:37 C 02 04 11.69 +17 35 54.6 c A53
2011-11-10 20:33:47 C 02 04 12.45 +17 35 52.8 c A53
2011-11-10 20:34:03 C 02 04 18.38 +17 35 55.1 u 958
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)