155140 (2005 UD)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8724259073 ± 1.58e-08
Semi-major axis (a)1.2748022331 AU ± 6.83e-10
Inclination (i)28.61064732° ± 4.45e-06
Long. of Asc. Node (Ω)19.65021611° ± 1.51e-06
Arg. of Perihelion (ω)207.67056636° ± 2.42e-06
Mean Anomaly (M)20.32351625° ± 3.75e-06
Mean Motion (n)0.6847752463°/day ± 5.50e-10
Perihelion dist (q)0.16263174 AU ± 2.01e-08
Aphelion dist (Q)2.38697273 AU ± 2.01e-08
Orbital Period1.43934275 yr ± 1.16e-09
Physical Parameters
H (abs. magnitude)17.47
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.191″
Uncertainty0
Orbit TypeApollo
MOID0.076425 AU
Observations Used902
Oppositions13
Arc Total1982-2024
First Observation Used1982-11-06
Last Observation Used2024-12-19
Observations (999)
Date Type RA Dec Mag Band Observatory
2008-10-27 06:14:17 C 00 58 25.65 +16 50 06.5 19.1 c 704
2008-10-27 06:30:58 C 00 58 23.40 +16 49 57.4 19.0 c 704
2008-10-27 06:47:35 C 00 58 21.17 +16 49 46.3 19.6 c 704
2008-10-27 07:04:12 C 00 58 18.97 +16 49 37.9 19.2 c 704
2008-10-28 04:30:07 C 00 55 34.16 +16 37 13.3 18.2 c 704
2008-10-28 04:46:41 C 00 55 32.03 +16 37 03.8 18.7 c 704
2008-10-28 05:03:33 C 00 55 29.85 +16 36 54.3 18.7 c 704
2008-10-28 05:20:12 C 00 55 27.70 +16 36 44.6 18.9 c 704
2008-10-28 05:36:46 C 00 55 25.59 +16 36 35.1 18.9 c 704
2008-11-01 04:56:41 C 00 44 23.78 +15 43 48.5 r G96
2008-11-01 05:12:38 C 00 44 22.05 +15 43 40.1 r G96
2008-11-01 05:28:37 C 00 44 20.32 +15 43 31.6 r G96
2008-11-01 05:44:33 C 00 44 18.60 +15 43 23.2 r G96
2008-11-03 04:32:45 C 00 39 35.29 +15 19 12.9 18.8 c 704
2008-11-03 04:49:53 C 00 39 33.55 +15 19 05.1 19.4 c 704
2008-11-03 05:25:20 C 00 39 30.07 +15 18 46.5 19.7 c 704
2008-11-03 05:42:31 C 00 39 28.40 +15 18 37.7 19.6 c 704
2011-09-29 08:29:17 C 03 11 32.66 +28 05 28.6 19.8 c 704
2011-09-29 08:48:21 C 03 11 30.51 +28 05 31.1 20.5 c 704
2011-09-29 09:07:30 C 03 11 28.29 +28 05 33.8 20.2 c 704
2011-09-29 09:26:47 C 03 11 26.12 +28 05 33.7 20.2 c 704
2011-09-29 09:46:16 C 03 11 23.85 +28 05 37.0 19.8 c 704
2011-09-29 10:10:57 C 03 11 21.12 +28 05 39.0 r 703
2011-09-29 10:19:05 C 03 11 20.11 +28 05 40.9 r 703
2011-09-29 10:27:14 C 03 11 19.17 +28 05 40.8 r 703
2011-09-29 10:35:27 C 03 11 18.24 +28 05 41.3 r 703
2011-10-18 12:19:43 C 02 12 13.79 +27 17 58.2 r D29
2011-10-18 12:42:44 C 02 12 10.65 +27 17 50.4 r D29
2011-10-18 13:05:51 C 02 12 07.44 +27 17 44.7 r D29
2011-10-24 09:16:58 C 01 53 28.60 +26 25 30.2 r 703
2011-10-24 09:32:03 C 01 53 26.59 +26 25 24.4 r 703
2011-10-24 09:47:00 C 01 53 24.68 +26 25 17.9 r 703
2011-10-24 10:02:01 C 01 53 22.66 +26 25 10.2 r 703
2011-10-26 19:40:15 C 01 46 03.00 +25 59 39.3 u 240
2011-10-26 19:45:21 C 01 46 02.39 +25 59 37.2 u 240
2011-10-26 19:50:26 C 01 46 01.78 +25 59 35.1 u 240
2011-10-26 19:52:28 C 01 46 01.51 +25 59 34.0 u 240
2011-10-26 20:00:37 C 01 46 00.49 +25 59 30.1 u 240
2013-12-09 02:45:37 C 01 30 15.10 +45 08 42.4 q 448
2013-12-09 03:19:34 C 01 30 11.11 +45 08 14.9 q 448
2013-12-09 03:53:29 C 01 30 07.17 +45 07 46.0 q 448
2013-12-11 03:57:04 C 01 24 51.29 +44 26 53.6 q 448
2013-12-11 04:28:38 C 01 24 47.83 +44 26 27.4 q 448
2013-12-11 05:03:21 C 01 24 44.13 +44 25 57.4 q 448
2014-10-04 09:17:33 C 03 12 08.21 +32 16 50.9 q 703
2014-10-04 09:26:28 C 03 12 07.32 +32 16 52.4 q 703
2014-10-04 09:35:20 C 03 12 06.50 +32 16 52.5 q 703
2014-10-04 10:47:26 C 03 11 59.76 +32 17 01.6 q G96
2014-10-04 10:59:08 C 03 11 58.69 +32 17 02.8 q G96
2014-10-04 11:10:49 C 03 11 57.57 +32 17 04.3 q G96