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
2010-04-06 00:19:09 C 13 34 46.89 -07 42 14.5 v 204
2010-04-06 00:26:34 C 13 34 46.11 -07 42 09.3 v 204
2010-04-06 00:27:52 C 13 34 47.97 -07 41 49.9 r J51
2010-04-06 00:49:21 C 13 34 45.61 -07 41 35.3 r J51
2010-04-06 02:20:17 C 13 34 34.27 -07 40 47.7 v 204
2010-04-06 02:24:05 C 13 34 33.88 -07 40 44.9 v 204
2010-04-06 05:25:35 C 13 34 22.87 -07 38 20.8 u H13
2010-04-06 05:35:15 C 13 34 22.14 -07 38 14.6 u H13
2010-04-06 05:43:07 C 13 34 21.13 -07 38 08.0 u H13
2010-04-06 06:36:34 C 13 34 13.72 -07 37 33.6 u H45
2010-04-06 06:38:17 C 13 34 13.52 -07 37 32.3 u H45
2010-04-06 06:40:16 C 13 34 13.31 -07 37 30.9 u H45
2010-04-06 06:41:57 C 13 34 13.13 -07 37 29.7 u H45
2010-04-06 06:43:30 C 13 34 12.95 -07 37 28.5 u H45
2010-04-06 06:44:56 C 13 34 12.80 -07 37 27.4 u H45
2010-04-06 06:46:43 C 13 34 12.61 -07 37 26.2 u H45
2010-04-06 06:47:27 C 13 34 12.17 -07 37 30.4 o H21
2010-04-06 06:50:47 C 13 34 11.78 -07 37 27.9 o H21
2010-04-06 06:54:51 C 13 34 11.35 -07 37 25.1 o H21
2010-04-06 06:58:01 C 13 34 10.99 -07 37 22.5 o H21
2010-04-06 06:59:38 C 13 34 12.66 -07 37 12.4 u 926
2010-04-06 07:02:30 C 13 34 12.34 -07 37 10.4 u 926
2010-04-06 07:02:46 C 13 34 10.46 -07 37 19.0 o H21
2010-04-06 07:05:24 C 13 34 12.02 -07 37 08.2 u 926
2010-04-06 09:27:47 C 13 33 59.846 -07 35 07.88 o 568
2010-04-06 09:41:31 C 13 33 58.255 -07 34 57.77 o 568
2010-04-06 09:55:23 C 13 33 56.648 -07 34 47.59 o 568
2010-04-06 10:46:12 C 13 33 47.18 -07 34 22.6 o 291
2010-04-06 10:52:50 C 13 33 46.46 -07 34 17.4 o 291
2010-04-06 10:58:21 C 13 33 45.85 -07 34 13.0 o 291
2010-04-06 20:27:23 C 13 32 57.25 -07 27 06.0 u 151
2010-04-06 20:30:15 C 13 32 56.96 -07 27 04.1 u 151
2010-04-06 20:33:06 C 13 32 56.65 -07 27 01.9 u 151
2010-04-06 21:28:22 C 13 32 50.03 -07 26 20.3 o 046
2010-04-06 21:29:18 C 13 32 50.02 -07 26 19.8 o 046
2010-04-06 21:32:11 C 13 32 49.60 -07 26 17.3 o 046
2010-04-06 21:33:08 C 13 32 49.50 -07 26 16.4 o 046
2010-04-06 21:34:05 C 13 32 49.43 -07 26 15.2 o 046
2010-04-06 21:48:42 C 13 32 48.02 -07 25 58.0 r 157
2010-04-06 21:51:53 C 13 32 47.64 -07 25 55.8 r 157
2010-04-06 21:55:04 C 13 32 47.23 -07 25 52.8 r 157
2010-04-06 22:36:58 C 13 32 42.38 -07 25 21.0 w B33
2010-04-06 23:02:07 C 13 32 39.34 -07 25 00.6 w B33
2010-04-06 23:12:14 C 13 32 38.20 -07 24 54.1 u C13
2010-04-06 23:13:10 C 13 32 38.01 -07 24 51.5 w B33
2010-04-06 23:24:59 C 13 32 36.67 -07 24 43.9 u C13
2010-04-06 23:37:37 C 13 32 35.15 -07 24 33.7 u C13
2010-04-07 00:42:46 C 13 32 29.41 -07 23 20.2 o J04
2010-04-07 00:44:26 C 13 32 29.20 -07 23 18.9 o J04
2010-04-07 00:46:08 C 13 32 28.98 -07 23 17.5 o J04
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)