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
2010-04-07 07:54:06 C 13 31 42.40 -07 17 18.7 u 926
2010-04-07 07:56:58 C 13 31 42.03 -07 17 16.3 u 926
2010-04-07 07:59:51 C 13 31 41.65 -07 17 13.8 u 926
2010-04-07 21:06:38 C 13 30 14.96 -07 05 26.9 u A81
2010-04-07 21:10:26 C 13 30 14.47 -07 05 25.0 w B33
2010-04-07 21:22:06 C 13 30 12.88 -07 05 14.1 w B33
2010-04-07 21:22:20 C 13 30 12.82 -07 05 12.4 u A81
2010-04-07 21:23:35 C 13 30 12.25 -07 05 18.8 o 046
2010-04-07 21:25:20 C 13 30 12.00 -07 05 16.9 o 046
2010-04-07 21:26:40 C 13 30 11.83 -07 05 15.8 o 046
2010-04-07 21:27:59 C 13 30 11.64 -07 05 14.5 o 046
2010-04-07 21:30:36 C 13 30 11.30 -07 05 12.3 o 046
2010-04-07 21:31:54 C 13 30 11.11 -07 05 11.1 o 046
2010-04-07 21:33:26 C 13 30 10.89 -07 05 09.6 o 046
2010-04-07 21:34:22 C 13 30 11.20 -07 05 02.7 w B33
2010-04-07 21:34:43 C 13 30 10.72 -07 05 08.2 o 046
2010-04-07 21:37:28 C 13 30 10.36 -07 05 05.5 o 046
2010-04-07 21:38:47 C 13 30 10.18 -07 05 04.5 o 046
2010-04-07 21:43:14 C 13 30 09.93 -07 04 52.5 u A81
2010-04-07 22:12:33 C 13 30 07.04 -07 04 22.3 w I96
2010-04-07 22:37:56 C 13 30 03.53 -07 03 58.4 w I96
2010-04-07 23:03:17 C 13 30 00.01 -07 03 34.0 w I96
2010-04-07 23:28:41 C 13 29 56.39 -07 03 10.6 w I96
2010-04-07 23:43:54 C 13 29 54.24 -07 02 55.6 w I96
2010-04-08 05:35:18 C 13 29 10.61 -06 56 58.9 u H45
2010-04-08 05:37:05 C 13 29 10.33 -06 56 57.0 u H45
2010-04-08 05:38:47 C 13 29 10.08 -06 56 55.3 u H45
2010-04-08 05:40:15 C 13 29 09.85 -06 56 53.8 u H45
2010-04-08 05:43:10 C 13 29 09.42 -06 56 50.7 u H45
2010-04-08 05:44:42 C 13 29 09.18 -06 56 49.2 u H45
2010-04-08 06:10:49 C 13 29 07.04 -06 56 17.8 o 291
2010-04-08 06:16:05 C 13 29 06.25 -06 56 12.5 o 291
2010-04-08 06:21:23 C 13 29 05.44 -06 56 07.1 o 291
2010-04-08 07:21:22 C 13 28 56.23 -06 55 17.3 17.1 r 718
2010-04-08 07:33:59 C 13 28 54.32 -06 55 04.4 17.1 r 718
2010-04-08 07:45:08 C 13 28 52.62 -06 54 53.0 17.4 r 718
2010-04-08 07:57:08 C 13 28 50.81 -06 54 40.5 17.2 r 718
2010-04-08 08:19:07 C 13 28 46.93 -06 54 09.2 o H01
2010-04-08 08:29:23 C 13 28 45.35 -06 53 58.4 o H01
2010-04-08 08:29:53 C 13 28 45.26 -06 53 57.4 17.1 c 704
2010-04-08 08:44:20 C 13 28 43.05 -06 53 42.8 o H01
2010-04-08 08:46:32 C 13 28 42.70 -06 53 39.9 17.1 c 704
2010-04-08 08:55:51 C 13 28 41.28 -06 53 30.6 o H01
2010-04-08 09:03:10 C 13 28 40.14 -06 53 22.7 17.1 c 704
2010-04-08 09:19:57 C 13 28 37.57 -06 53 04.3 17.3 c 704
2010-04-08 09:36:35 C 13 28 35.02 -06 52 46.8 17.2 c 704
2010-04-08 10:56:22 C 13 28 22.87 -06 51 18.3 u 448
2010-04-08 11:01:38 C 13 28 22.10 -06 51 12.5 u 448
2010-04-08 11:06:35 C 13 28 21.33 -06 51 07.2 u 448
2010-04-08 21:29:38 C 13 27 02.04 -06 40 02.8 o 046
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)