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
2010-04-18 18:35:41 C 09 51 14.844 +19 46 12.65 r 089
2010-04-18 18:36:48 C 09 51 10.062 +19 46 37.48 r 089
2010-04-18 18:37:54 C 09 51 05.255 +19 47 02.45 r 089
2010-04-18 18:52:16 C 09 50 03.562 +19 52 23.55 r 089
2010-04-18 18:53:38 C 09 49 57.654 +19 52 53.87 r 089
2010-04-18 18:55:00 C 09 49 51.704 +19 53 24.50 r 089
2010-04-18 19:10:12 C 09 48 46.063 +19 59 02.78 r 089
2010-04-18 19:11:34 C 09 48 40.090 +19 59 33.63 r 089
2010-04-18 19:12:57 C 09 48 34.176 +20 00 04.22 r 089
2010-04-18 19:28:08 C 09 47 28.203 +20 05 41.48 r 089
2010-04-18 19:29:31 C 09 47 22.239 +20 06 12.12 r 089
2010-04-18 19:30:53 C 09 47 16.265 +20 06 42.72 r 089
2010-04-18 19:46:24 C 09 46 08.591 +20 12 25.83 r 089
2010-04-18 19:47:47 C 09 46 02.531 +20 12 56.46 r 089
2010-04-18 19:49:10 C 09 45 56.548 +20 13 26.93 r 089
2010-04-18 19:58:59 C 09 45 24.25 +20 16 49.3 u 510
2010-04-18 20:02:37 C 09 45 08.27 +20 18 10.4 u 510
2010-04-18 20:04:44 C 09 44 48.348 +20 19 10.47 r 089
2010-04-18 20:06:07 C 09 44 42.314 +20 19 40.56 r 089
2010-04-18 20:06:16 C 09 44 52.28 +20 19 31.5 u 510
2010-04-18 20:07:30 C 09 44 36.238 +20 20 11.51 r 089
2010-04-18 20:24:03 C 09 43 31.87 +20 26 51.0 c A48
2010-04-18 20:24:36 C 09 43 29.46 +20 27 04.3 c A48
2010-04-18 20:25:11 C 09 43 26.80 +20 27 17.2 c A48
2010-04-18 20:25:48 C 09 43 24.16 +20 27 30.4 c A48
2010-04-18 21:08:37 C 09 40 13.37 +20 43 12.7 u 560
2010-04-18 21:09:53 C 09 40 07.68 +20 43 40.7 u 560
2010-04-18 21:11:09 C 09 40 01.99 +20 44 08.6 u 560
2010-04-18 21:28:58 C 09 38 48.77 +20 50 00.7 u J95
2010-04-18 21:31:53 C 09 38 35.64 +20 51 04.7 u J95
2010-04-18 21:34:54 C 09 38 22.05 +20 52 10.9 u J95
2010-04-18 21:38:05 C 09 38 00.84 +20 54 08.1 v 160
2010-04-18 21:38:22 C 09 37 59.58 +20 54 14.2 v 160
2010-04-18 21:38:38 C 09 37 58.36 +20 54 21.0 v 160
2010-04-18 21:38:42 C 09 38 05.00 +20 53 34.0 u J95
2010-04-18 21:41:35 C 09 37 52.02 +20 54 37.1 u J95
2010-04-18 21:45:11 C 09 37 23.525 +20 55 38.37 r 089
2010-04-18 21:46:33 C 09 37 17.405 +20 56 08.33 r 089
2010-04-18 21:47:56 C 09 37 11.236 +20 56 38.05 r 089
2010-04-18 22:02:06 C 09 36 07.844 +21 01 42.88 r 089
2010-04-18 22:03:29 C 09 36 01.658 +21 02 11.94 r 089
2010-04-18 22:37:52 C 09 33 27.311 +21 14 27.32 r 089
2010-04-18 22:39:14 C 09 33 21.128 +21 14 56.04 r 089
2010-04-18 22:53:09 C 09 32 18.432 +21 19 52.98 r 089
2010-04-18 22:54:31 C 09 32 12.238 +21 20 21.55 r 089
2010-04-19 04:10:29 C 09 07 55.70 +23 14 33.8 15.5 r 718
2010-04-19 04:15:56 C 09 07 28.58 +23 16 23.0 15.5 r 718
2010-04-19 04:22:51 C 09 06 54.26 +23 18 39.6 15.7 r 718
2010-04-19 19:27:07 C 07 49 56.81 +27 15 00.8 u 143
2010-04-19 19:35:16 C 07 49 13.52 +27 16 21.9 u 143
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)