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 18:47:51 C 01 20 31.86 +18 43 14.2 w 213
2011-11-09 18:48:05 C 01 19 57.15 +18 38 48.9 u 084
2011-11-09 18:48:23 C 01 19 58.19 +18 38 48.0 u 084
2011-11-09 18:49:26 C 01 20 27.69 +18 41 51.7 u B67
2011-11-09 18:49:34 C 01 20 02.58 +18 38 43.8 u 084
2011-11-09 18:50:10 C 01 20 04.74 +18 38 41.3 u 084
2011-11-09 18:50:28 C 01 20 05.72 +18 38 40.5 u 084
2011-11-09 18:50:45 C 01 20 06.72 +18 38 39.5 u 084
2011-11-09 18:51:06 C 01 20 43.65 +18 43 02.2 r B49
2011-11-09 18:51:33 C 01 20 29.32 +18 40 43.9 r A35
2011-11-09 18:51:48 C 01 20 36.20 +18 41 43.9 u B67
2011-11-09 18:53:40 C 01 20 52.66 +18 42 55.4 w 213
2011-11-09 18:54:05 C 01 20 44.79 +18 43 23.3 u A81
2011-11-09 18:54:12 C 01 20 44.84 +18 41 36.0 u B67
2011-11-09 18:54:57 C 01 20 46.13 +18 39 51.3 u C39
2011-11-09 19:09:51 C 01 21 49.82 +18 42 01.5 r B49
2011-11-09 19:22:42 C 01 22 34.66 +18 41 15.6 u C27
2011-11-09 19:25:08 C 01 22 31.88 +18 41 35.9 u A81
2011-11-09 19:29:28 C 01 22 56.75 +18 40 57.2 r B49
2011-11-09 19:49:04 C 01 24 01.30 +18 39 51.3 r B49
2011-11-09 19:50:32 C 01 23 56.50 +18 38 23.0 u B67
2011-11-09 19:51:51 C 01 23 59.62 +18 40 00.5 u A81
2011-11-09 19:52:24 C 01 24 02.57 +18 38 16.9 u B67
2011-11-09 19:54:14 C 01 24 08.46 +18 38 10.1 u B67
2011-11-09 19:56:00 C 01 24 23.59 +18 39 27.8 r B49
2011-11-09 19:56:11 C 01 24 14.82 +18 38 03.4 u B67
2011-11-09 19:56:36 C 01 24 25.27 +18 39 27.3 w B56
2011-11-09 19:58:03 C 01 24 20.79 +18 37 56.4 u B67
2011-11-09 19:58:30 C 01 24 18.18 +18 38 19.7 u 595
2011-11-09 19:59:53 C 01 24 26.69 +18 37 50.3 u B67
2011-11-09 20:00:14 C 01 24 36.74 +18 39 15.0 w B56
2011-11-09 20:01:32 C 01 24 40.91 +18 39 10.7 w B56
2011-11-09 20:05:11 C 01 24 52.53 +18 38 57.8 w B56
2011-11-09 20:06:41 C 01 24 37.200 +18 37 19.81 o 461
2011-11-09 20:07:04 C 01 24 38.446 +18 37 18.42 o 461
2011-11-09 20:07:28 C 01 24 39.691 +18 37 16.94 o 461
2011-11-09 20:07:51 C 01 24 40.926 +18 37 15.44 o 461
2011-11-09 20:08:14 C 01 24 42.156 +18 37 13.98 o 461
2011-11-09 20:08:38 C 01 24 43.391 +18 37 12.46 o 461
2011-11-09 20:09:01 C 01 24 44.622 +18 37 11.08 o 461
2011-11-09 20:09:25 C 01 24 45.854 +18 37 09.50 o 461
2011-11-09 20:09:29 C 01 24 55.48 +18 38 56.4 u A81
2011-11-09 20:09:48 C 01 24 47.109 +18 37 07.98 o 461
2011-11-09 20:10:12 C 01 24 48.326 +18 37 06.58 o 461
2011-11-09 20:10:35 C 01 24 49.544 +18 37 05.17 o 461
2011-11-09 20:10:59 C 01 24 50.783 +18 37 03.62 o 461
2011-11-09 20:11:22 C 01 24 51.991 +18 37 02.23 o 461
2011-11-09 20:11:46 C 01 24 53.226 +18 37 00.78 o 461
2011-11-09 20:12:02 C 01 25 00.96 +18 37 30.4 u 595
2011-11-09 20:12:09 C 01 24 54.455 +18 36 59.14 o 461
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)