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
2010-04-16 02:41:58 C 12 16 55.63 +02 47 32.6 o H21
2010-04-16 02:50:41 C 12 16 45.64 +02 48 49.5 o H21
2010-04-16 02:53:46 C 12 16 42.08 +02 49 17.0 o H21
2010-04-16 02:54:58 C 12 16 40.71 +02 49 27.2 o H21
2010-04-16 02:58:52 C 12 16 36.21 +02 50 01.7 o H21
2010-04-16 06:14:45 C 12 12 47.19 +03 20 09.1 15.4 c 704
2010-04-16 06:31:19 C 12 12 26.69 +03 22 44.3 15.8 c 704
2010-04-16 06:48:05 C 12 12 05.80 +03 25 22.5 15.6 c 704
2010-04-16 07:04:41 C 12 11 45.08 +03 27 59.3 15.4 c 704
2010-04-16 07:16:03 C 12 11 32.78 +03 29 18.1 r 718
2010-04-16 07:21:10 C 12 11 24.42 +03 30 36.1 15.3 c 704
2010-04-16 07:25:43 C 12 11 20.68 +03 30 50.1 r 718
2010-04-16 07:36:54 C 12 11 06.73 +03 32 36.4 r 718
2010-04-16 15:35:24 C 12 00 44.68 +05 01 36.8 r D96
2010-04-16 16:05:56 C 12 00 00.09 +05 07 16.8 r D96
2010-04-16 16:09:23 C 11 59 55.03 +05 07 55.4 r D96
2010-04-16 20:22:23 C 11 54 01.15 +05 50 23.6 r 157
2010-04-16 20:22:46 C 11 54 00.53 +05 50 28.4 r 157
2010-04-16 20:23:09 C 11 53 59.88 +05 50 33.4 r 157
2010-04-16 20:23:34 C 11 53 59.25 +05 50 38.1 r 157
2010-04-16 21:28:40 C 11 52 14.48 +06 03 16.9 u 510
2010-04-16 21:34:13 C 11 52 05.35 +06 04 25.8 u 510
2010-04-16 21:39:48 C 11 51 56.20 +06 05 35.1 u 510
2010-04-16 21:45:22 C 11 51 47.04 +06 06 44.2 u 510
2010-04-16 21:55:35 C 11 51 32.55 +06 08 51.6 w J69
2010-04-16 21:57:56 C 11 51 28.65 +06 09 21.0 w J69
2010-04-16 22:00:18 C 11 51 24.75 +06 09 50.3 w J69
2010-04-16 22:02:39 C 11 51 20.86 +06 10 19.6 w J69
2010-04-16 22:05:00 C 11 51 16.94 +06 10 49.3 w J69
2010-04-16 22:10:29 C 11 51 07.98 +06 11 55.5 u J95
2010-04-16 22:10:42 C 11 51 03.43 +06 12 42.5 15.0 u A81
2010-04-16 22:12:27 C 11 51 00.52 +06 13 04.2 15.3 u A81
2010-04-16 22:14:18 C 11 50 57.41 +06 13 27.6 15.2 u A81
2010-04-16 22:20:01 C 11 50 50.68 +06 14 44.1 w 213
2010-04-16 22:32:39 C 11 50 31.04 +06 16 34.5 u J95
2010-04-16 22:42:29 C 11 50 12.95 +06 19 25.9 w 213
2010-04-16 22:58:58 C 11 49 46.83 +06 22 07.8 u J95
2010-04-16 23:00:36 C 11 49 42.23 +06 23 16.3 w 213
2010-04-16 23:53:08 C 11 48 39.59 +06 38 16.2 d H78
2010-04-16 23:53:57 C 11 48 38.23 +06 38 27.9 d H78
2010-04-17 00:04:33 C 11 48 20.02 +06 40 47.3 d H78
2010-04-17 00:05:30 C 11 48 18.34 +06 40 59.6 d H78
2010-04-17 00:06:28 C 11 48 16.64 +06 41 11.9 d H78
2010-04-17 00:11:19 C 11 48 08.24 +06 42 16.7 d H78
2010-04-17 01:36:16 C 11 45 14.66 +06 58 17.0 w J24
2010-04-17 01:38:06 C 11 45 11.42 +06 58 41.1 w J24
2010-04-17 01:41:39 C 11 45 05.02 +06 59 28.6 w J24
2010-04-17 03:06:14 C 11 43 03.35 +07 18 10.4 u H13
2010-04-17 03:11:24 C 11 42 53.78 +07 19 22.4 u H13
2010-04-17 03:15:40 C 11 42 45.94 +07 20 21.2 u H13
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)