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 01:36:08 C 21 35 57.84 +14 25 02.4 11.7 u H05
2011-11-09 01:51:04 C 21 43 42.93 +14 50 53.7 11.4 u H05
2011-11-09 01:53:22 C 21 45 18.65 +15 02 19.7 r G96
2011-11-09 01:53:44 C 21 45 29.60 +15 02 55.1 r G96
2011-11-09 01:54:06 C 21 45 41.14 +15 03 32.5 r G96
2011-11-09 01:54:28 C 21 45 52.15 +15 04 08.1 r G96
2011-11-09 02:05:00 C 21 50 47.48 +15 13 29.5 11.4 u H05
2011-11-09 02:22:09 C 21 59 17.94 +15 39 26.0 11.2 u H05
2011-11-09 02:36:29 C 22 07 18.53 +16 01 29.7 t G58
2011-11-09 02:36:38 C 22 07 22.57 +16 01 41.2 t G58
2011-11-09 02:36:45 C 22 07 25.87 +16 01 50.7 t G58
2011-11-09 02:40:58 C 22 08 22.66 +16 05 29.7 11.3 u H05
2011-11-09 02:51:40 C 22 14 17.87 +16 20 22.7 o G68
2011-11-09 02:51:54 C 22 14 32.99 +16 21 36.6 t G58
2011-11-09 02:52:02 C 22 14 36.90 +16 21 47.1 t G58
2011-11-09 02:52:09 C 22 14 40.12 +16 21 55.8 t G58
2011-11-09 03:00:03 C 22 17 15.89 +16 29 26.0 11.4 u H05
2011-11-09 03:00:35 C 22 17 32.59 +16 36 49.3 v H15
2011-11-09 03:21:41 C 22 27 49.42 +16 55 06.1 o G68
2011-11-09 03:28:59 C 22 31 08.01 +17 03 40.8 t G58
2011-11-09 03:29:07 C 22 31 11.64 +17 03 49.6 t G58
2011-11-09 03:29:13 C 22 31 14.60 +17 03 56.3 t G58
2011-11-09 03:31:03 C 22 31 02.49 +17 09 52.6 v H15
2011-11-09 03:47:24 C 22 38 54.91 +17 21 27.7 t G58
2011-11-09 03:47:31 C 22 38 57.75 +17 21 34.1 t G58
2011-11-09 03:47:38 C 22 39 00.62 +17 21 40.2 t G58
2011-11-09 03:47:45 C 22 39 03.46 +17 21 46.7 t G58
2011-11-09 03:47:51 C 22 39 06.31 +17 21 53.1 t G58
2011-11-09 03:58:46 C 22 42 37.52 +17 28 48.0 10.5 u H05
2011-11-09 04:00:40 C 22 43 22.68 +17 36 43.5 v H15
2011-11-09 04:20:14 C 22 51 07.66 +17 45 40.5 10.7 u H05
2011-11-09 04:31:08 C 22 55 14.99 +17 59 28.2 v H15
2011-11-09 04:38:55 C 22 58 11.91 +17 58 31.2 10.7 u H05
2011-11-09 05:00:37 C 23 05 58.62 +18 17 22.4 v H15
2011-11-09 05:31:01 C 23 16 17.14 +18 32 09.9 v H15
2011-11-09 06:01:03 C 23 25 45.50 +18 43 39.7 v H15
2011-11-09 06:31:02 C 23 34 33.30 +18 52 31.2 v H15
2011-11-09 07:00:40 C 23 42 39.01 +18 59 06.9 v H15
2011-11-09 07:31:03 C 23 50 22.45 +19 04 01.6 v H15
2011-11-09 07:52:00 C 23 55 52.50 +19 04 56.7 o G68
2011-11-09 07:55:09 C 23 56 07.14 +19 06 47.6 c H06
2011-11-09 07:55:55 C 23 56 17.72 +19 06 52.5 c H06
2011-11-09 07:56:40 C 23 56 28.28 +19 06 56.8 c H06
2011-11-09 07:57:25 C 23 56 38.71 +19 07 01.0 c H06
2011-11-09 07:58:11 C 23 56 49.20 +19 07 05.2 c H06
2011-11-09 08:00:37 C 23 57 23.00 +19 07 17.9 v H15
2011-11-09 08:30:38 C 00 04 01.36 +19 09 23.6 v H15
2011-11-09 10:09:49 C 00 26 16.38 +19 17 12.5 o 300
2011-11-09 10:10:17 C 00 26 20.81 +19 17 12.7 o 300
2011-11-09 10:10:43 C 00 26 25.19 +19 17 13.4 o 300
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)