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
2011-11-15 01:56:25 C 02 28 02.232 +16 43 17.21 o C60
2011-11-15 01:59:05 C 02 28 02.369 +16 43 16.58 o C60
2011-11-15 02:01:44 C 02 28 02.534 +16 43 15.81 o C60
2011-11-15 02:04:23 C 02 28 02.669 +16 43 15.02 o C60
2011-11-15 02:07:03 C 02 28 02.805 +16 43 13.98 o C60
2011-11-15 02:09:42 C 02 28 02.982 +16 43 13.43 o C60
2011-11-15 02:12:21 C 02 28 03.114 +16 43 13.16 o C60
2011-11-15 02:12:50 C 02 28 03.59 +16 42 43.1 16.0 u 084
2011-11-15 02:15:00 C 02 28 03.244 +16 43 11.83 o C60
2011-11-15 02:16:00 C 02 28 03.81 +16 42 42.4 16.0 u 084
2011-11-15 02:19:09 C 02 28 04.07 +16 42 41.5 15.8 u 084
2011-11-15 02:20:19 C 02 28 03.543 +16 43 10.64 o C60
2011-11-15 02:22:18 C 02 28 04.26 +16 42 40.9 16.1 u 084
2011-11-15 02:22:58 C 02 28 03.752 +16 43 09.63 o C60
2011-11-15 02:25:28 C 02 28 04.53 +16 42 39.9 16.1 u 084
2011-11-15 02:25:37 C 02 28 03.886 +16 43 09.32 o C60
2011-11-15 02:28:17 C 02 28 04.048 +16 43 08.10 o C60
2011-11-15 02:28:38 C 02 28 04.73 +16 42 38.9 16.0 u 084
2011-11-15 02:30:56 C 02 28 04.168 +16 43 07.50 o C60
2011-11-15 02:31:48 C 02 28 04.95 +16 42 38.0 16.2 u 084
2011-11-15 02:33:36 C 02 28 04.330 +16 43 06.52 o C60
2011-11-15 02:34:58 C 02 28 05.23 +16 42 37.4 16.0 u 084
2011-11-15 02:36:15 C 02 28 04.464 +16 43 05.83 o C60
2011-11-15 02:38:08 C 02 28 05.43 +16 42 36.3 16.2 u 084
2011-11-15 02:38:55 C 02 28 04.643 +16 43 05.18 o C60
2011-11-15 02:41:19 C 02 28 05.65 +16 42 35.3 16.1 u 084
2011-11-15 02:41:34 C 02 28 04.805 +16 43 04.13 o C60
2011-11-15 02:44:13 C 02 28 04.992 +16 43 03.42 o C60
2011-11-15 02:44:30 C 02 28 05.92 +16 42 34.6 16.2 u 084
2011-11-15 02:46:52 C 02 28 05.117 +16 43 02.43 o C60
2011-11-15 02:47:40 C 02 28 06.11 +16 42 33.7 16.4 u 084
2011-11-15 02:49:31 C 02 28 05.289 +16 43 01.65 o C60
2011-11-15 02:50:50 C 02 28 06.37 +16 42 32.6 16.3 u 084
2011-11-15 02:52:11 C 02 28 05.437 +16 43 01.17 o C60
2011-11-15 02:54:00 C 02 28 06.67 +16 42 32.3 16.1 u 084
2011-11-15 02:54:50 C 02 28 05.604 +16 43 00.17 o C60
2011-11-15 02:57:29 C 02 28 05.801 +16 42 59.67 o C60
2011-11-15 03:11:38 C 02 28 21.14 +16 43 51.3 u G47
2011-11-15 05:50:52 C 02 28 26.20 +16 43 34.6 u G47
2011-11-15 06:05:36 C 02 28 27.43 +16 43 42.4 u 857
2011-11-15 06:25:36 C 02 28 27.94 +16 43 39.2 u 857
2011-11-15 11:56:28 C 02 28 55.52 +16 42 33.2 u 379
2011-11-15 11:59:08 C 02 28 55.62 +16 42 33.2 u 379
2011-11-15 12:10:03 C 02 28 55.90 +16 42 32.2 u 379
2011-11-15 12:18:42 C 02 28 56.12 +16 42 31.5 u 379
2011-11-15 12:21:22 C 02 28 56.20 +16 42 31.1 u 379
2011-11-15 12:24:02 C 02 28 56.27 +16 42 31.2 u 379
2011-11-15 12:32:21 C 02 28 56.48 +16 42 30.1 u 379
2011-11-15 12:35:01 C 02 28 56.54 +16 42 29.9 u 379
2011-11-15 12:37:41 C 02 28 56.60 +16 42 29.8 u 379
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)