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
2011-11-09 15:54:09 C 01 07 37.05 +18 48 30.9 12.7 u 084
2011-11-09 15:54:16 C 01 07 57.69 +18 52 45.2 u C73
2011-11-09 15:54:25 C 01 07 38.39 +18 48 30.0 12.7 u 084
2011-11-09 15:54:42 C 01 07 39.74 +18 48 29.2 12.7 u 084
2011-11-09 15:54:42 C 01 07 59.68 +18 52 43.8 u C73
2011-11-09 15:54:57 C 01 07 41.05 +18 48 28.5 12.7 u 084
2011-11-09 15:55:09 C 01 08 01.99 +18 52 42.5 u C73
2011-11-09 15:55:14 C 01 07 42.38 +18 48 27.7 12.7 u 084
2011-11-09 15:55:29 C 01 07 43.70 +18 48 26.9 12.7 u 084
2011-11-09 15:55:45 C 01 07 44.99 +18 48 26.2 12.7 u 084
2011-11-09 15:56:01 C 01 07 46.30 +18 48 25.4 12.7 u 084
2011-11-09 15:56:02 C 01 08 06.60 +18 52 39.4 u C73
2011-11-09 15:56:17 C 01 07 47.62 +18 48 24.5 12.8 u 084
2011-11-09 15:56:33 C 01 07 48.95 +18 48 23.7 12.7 u 084
2011-11-09 15:56:37 C 01 08 09.32 +18 52 38.6 u C73
2011-11-09 15:56:50 C 01 07 50.30 +18 48 23.0 12.7 u 084
2011-11-09 15:57:03 C 01 08 11.20 +18 52 37.2 u C73
2011-11-09 15:57:05 C 01 07 51.60 +18 48 22.2 12.7 u 084
2011-11-09 15:57:22 C 01 07 52.91 +18 48 21.3 12.7 u 084
2011-11-09 15:57:28 C 01 08 13.27 +18 52 36.0 u C73
2011-11-09 15:57:37 C 01 07 54.25 +18 48 20.6 12.8 u 084
2011-11-09 15:57:54 C 01 07 55.56 +18 48 19.7 12.8 u 084
2011-11-09 15:57:55 C 01 08 15.59 +18 52 34.7 u C73
2011-11-09 15:58:09 C 01 07 56.86 +18 48 19.1 12.8 u 084
2011-11-09 15:58:21 C 01 08 17.71 +18 52 33.5 u C73
2011-11-09 15:58:26 C 01 07 58.24 +18 48 18.2 12.8 u 084
2011-11-09 15:58:42 C 01 07 59.55 +18 48 17.3 12.7 u 084
2011-11-09 15:58:48 C 01 08 19.82 +18 52 32.0 u C73
2011-11-09 15:58:58 C 01 08 00.88 +18 48 16.6 12.7 u 084
2011-11-09 15:59:14 C 01 08 02.19 +18 48 15.8 12.7 u 084
2011-11-09 15:59:30 C 01 08 03.49 +18 48 15.0 12.7 u 084
2011-11-09 15:59:46 C 01 08 04.81 +18 48 14.2 12.8 u 084
2011-11-09 15:59:51 C 01 08 24.96 +18 52 29.0 u C73
2011-11-09 16:00:02 C 01 08 06.14 +18 48 13.4 12.8 u 084
2011-11-09 16:00:18 C 01 08 27.22 +18 52 28.0 u C73
2011-11-09 16:00:19 C 01 08 07.48 +18 48 12.6 12.8 u 084
2011-11-09 16:00:34 C 01 08 08.78 +18 48 11.6 12.8 u 084
2011-11-09 16:00:41 C 01 08 28.83 +18 52 27.2 u C73
2011-11-09 16:00:51 C 01 08 10.13 +18 48 10.9 12.7 u 084
2011-11-09 16:01:05 C 01 08 31.07 +18 52 25.6 u C73
2011-11-09 16:01:07 C 01 08 11.44 +18 48 10.0 12.7 u 084
2011-11-09 16:01:23 C 01 08 12.74 +18 48 09.1 12.7 u 084
2011-11-09 16:01:39 C 01 08 14.08 +18 48 08.5 12.7 u 084
2011-11-09 16:01:56 C 01 08 15.38 +18 48 07.7 12.8 u 084
2011-11-09 16:02:11 C 01 08 16.68 +18 48 06.8 12.8 u 084
2011-11-09 16:02:28 C 01 08 17.95 +18 48 06.1 12.8 u 084
2011-11-09 16:02:43 C 01 08 19.26 +18 48 05.1 12.8 u 084
2011-11-09 16:07:03 C 01 08 40.41 +18 47 52.1 u 084
2011-11-09 16:09:06 C 01 08 50.24 +18 47 45.8 12.3 u 084
2011-11-09 16:09:27 C 01 08 51.91 +18 47 44.8 12.2 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)