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 16:57:30 C 01 12 56.77 +18 46 18.5 o C60
2011-11-09 16:57:42 C 01 12 57.75 +18 46 18.1 o C60
2011-11-09 16:57:56 C 01 12 58.68 +18 46 17.5 o C60
2011-11-09 16:58:09 C 01 12 59.72 +18 46 16.4 o C60
2011-11-09 16:58:22 C 01 13 00.68 +18 46 16.2 o C60
2011-11-09 16:58:28 C 01 12 37.97 +18 45 09.9 u 084
2011-11-09 16:58:34 C 01 13 01.55 +18 46 15.1 o C60
2011-11-09 16:58:46 C 01 13 02.46 +18 46 14.8 o C60
2011-11-09 16:58:47 C 01 12 39.30 +18 45 08.7 u 084
2011-11-09 16:58:59 C 01 13 03.32 +18 46 15.1 o C60
2011-11-09 16:59:11 C 01 13 04.23 +18 46 14.1 o C60
2011-11-09 16:59:23 C 01 13 05.16 +18 46 13.3 o C60
2011-11-09 16:59:36 C 01 12 42.94 +18 45 06.1 u 084
2011-11-09 16:59:36 C 01 13 06.08 +18 46 13.0 o C60
2011-11-09 16:59:48 C 01 13 06.98 +18 46 12.3 o C60
2011-11-09 16:59:55 C 01 12 44.30 +18 45 05.1 u 084
2011-11-09 17:00:00 C 01 13 07.89 +18 46 11.7 o C60
2011-11-09 17:00:12 C 01 13 08.83 +18 46 10.4 o C60
2011-11-09 17:00:23 C 01 12 46.35 +18 45 03.5 u 084
2011-11-09 17:00:24 C 01 13 09.68 +18 46 10.5 o C60
2011-11-09 17:00:37 C 01 13 10.67 +18 46 10.0 o C60
2011-11-09 17:00:41 C 01 12 47.68 +18 45 02.6 u 084
2011-11-09 17:00:49 C 01 13 11.53 +18 46 09.4 o C60
2011-11-09 17:01:00 C 01 12 49.06 +18 45 01.5 u 084
2011-11-09 17:01:01 C 01 13 12.47 +18 46 08.6 o C60
2011-11-09 17:01:14 C 01 13 13.35 +18 46 07.9 o C60
2011-11-09 17:01:17 C 01 12 50.38 +18 45 00.5 u 084
2011-11-09 17:01:26 C 01 13 14.24 +18 46 07.1 o C60
2011-11-09 17:01:34 C 01 12 51.56 +18 44 59.7 u 084
2011-11-09 17:01:39 C 01 13 15.15 +18 46 06.4 o C60
2011-11-09 17:01:51 C 01 12 52.79 +18 44 58.7 u 084
2011-11-09 17:01:51 C 01 13 16.10 +18 46 06.2 o C60
2011-11-09 17:02:04 C 01 13 16.99 +18 46 05.9 o C60
2011-11-09 17:02:07 C 01 12 54.00 +18 44 57.8 u 084
2011-11-09 17:02:16 C 01 13 17.83 +18 46 05.0 o C60
2011-11-09 17:02:24 C 01 12 55.21 +18 44 56.8 u 084
2011-11-09 17:02:28 C 01 13 18.81 +18 46 04.0 o C60
2011-11-09 17:02:40 C 01 12 56.41 +18 44 56.0 u 084
2011-11-09 17:02:41 C 01 13 19.69 +18 46 04.0 o C60
2011-11-09 17:02:53 C 01 13 20.63 +18 46 02.8 o C60
2011-11-09 17:02:57 C 01 12 57.63 +18 44 55.1 u 084
2011-11-09 17:03:15 C 01 12 58.94 +18 44 54.1 u 084
2011-11-09 17:03:19 C 01 13 22.47 +18 46 01.9 o C60
2011-11-09 17:03:31 C 01 13 23.43 +18 46 01.1 o C60
2011-11-09 17:03:33 C 01 13 00.27 +18 44 53.2 u 084
2011-11-09 17:03:44 C 01 13 24.37 +18 46 00.3 o C60
2011-11-09 17:03:51 C 01 13 01.51 +18 44 52.2 u 084
2011-11-09 17:03:57 C 01 13 25.28 +18 45 59.6 o C60
2011-11-09 17:04:08 C 01 13 02.83 +18 44 51.1 u 084
2011-11-09 17:04:22 C 01 13 27.14 +18 45 58.4 o C60
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)