277473 (2005 WD1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4415289561 ± 7.33e-08
Semi-major axis (a)2.1999271076 AU ± 1.02e-08
Inclination (i)43.07339274° ± 1.51e-05
Long. of Asc. Node (Ω)52.26937114° ± 1.20e-05
Arg. of Perihelion (ω)285.94562996° ± 1.81e-05
Mean Anomaly (M)99.93567016° ± 1.23e-05
Mean Motion (n)0.3020646053°/day ± 2.11e-09
Perihelion dist (q)1.22859559 AU ± 1.61e-07
Aphelion dist (Q)3.17125863 AU ± 1.62e-07
Orbital Period3.26296516 yr ± 2.28e-08
Physical Parameters
H (abs. magnitude)16.81
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual1.434″
Uncertainty0
Orbit TypeAmor
MOID0.495785 AU
Observations Used1085
Oppositions15
Arc Total2004-2026
First Observation Used2004-04-17
Last Observation Used2026-01-11
Observations (1940)
Date Type RA Dec Mag Band Observatory
2008-11-21 05:18:22 C 01 24 47.59 -14 04 25.5 r 703
2008-11-21 05:28:56 C 01 24 46.83 -14 03 53.5 r 703
2008-11-21 05:39:23 C 01 24 46.04 -14 03 21.2 r 703
2008-11-21 05:49:34 C 01 24 45.32 -14 02 50.2 r 703
2008-12-01 04:35:27 C 01 12 47.37 -03 05 05.6 r 703
2008-12-01 04:46:47 C 01 12 46.98 -03 04 37.4 r 703
2008-12-01 04:58:08 C 01 12 46.51 -03 04 09.4 r 703
2008-12-01 05:09:24 C 01 12 46.18 -03 03 43.4 r 703
2008-12-03 19:53:23 C 01 11 01.36 -00 35 31.4 v 204
2008-12-03 20:02:33 C 01 11 01.11 -00 35 10.5 v 204
2008-12-03 21:13:06 C 01 10 59.27 -00 32 29.5 v 204
2008-12-03 21:22:22 C 01 10 59.03 -00 32 08.3 v 204
2008-12-13 02:38:28 C 01 08 25.15 +06 56 05.0 o H55
2008-12-13 02:41:30 C 01 08 25.16 +06 56 10.2 o H55
2008-12-13 02:44:31 C 01 08 25.16 +06 56 15.5 o H55
2008-12-13 18:23:39 C 01 08 25.17 +07 24 02.4 18.9 r C20
2008-12-17 18:49:21 C 01 08 52.37 +10 05 28.3 19.0 r C20
2008-12-17 18:51:27 C 01 08 52.38 +10 05 31.6 19.0 r C20
2008-12-18 18:45:57 C 01 09 05.98 +10 43 05.7 19.3 r C20
2008-12-18 18:48:04 C 01 09 06.00 +10 43 09.4 19.1 r C20
2008-12-19 19:43:26 C 01 09 22.82 +11 21 20.6 19.3 r C20
2008-12-19 19:45:33 C 01 09 22.82 +11 21 24.8 19.3 r C20
2008-12-20 19:18:57 C 01 09 41.33 +11 56 39.3 19.3 r C20
2008-12-20 19:21:04 C 01 09 41.32 +11 56 42.0 19.7 r C20
2010-02-11 09:56:27 C 13 10 07.70 +58 34 46.2 o H21
2010-02-11 10:19:47 C 13 10 06.85 +58 34 57.5 o H21
2010-02-11 10:45:53 C 13 10 05.88 +58 35 10.3 o H21
2011-04-10 01:30:13 C 15 42 50.56 -00 02 24.7 u B67
2011-04-10 01:47:36 C 15 42 49.77 -00 02 26.8 u B67
2011-04-10 02:04:40 C 15 42 49.04 -00 02 29.7 u B67
2011-04-17 07:42:14 C 15 33 56.42 -00 35 27.1 u 448
2011-04-17 08:14:14 C 15 33 54.46 -00 35 35.1 u 448
2011-04-17 08:50:13 C 15 33 52.40 -00 35 43.8 u 448
2011-04-24 06:30:23 C 15 23 16.27 -01 16 53.2 o 691
2011-04-24 06:55:54 C 15 23 14.48 -01 17 00.9 o 691
2011-04-24 07:21:24 C 15 23 12.66 -01 17 07.6 o 691
2011-04-28 09:37:00 C 15 16 00.643 -01 46 39.19 L F51
2011-04-28 09:59:03 C 15 15 58.911 -01 46 46.37 L F51
2011-04-28 10:22:17 C 15 15 57.097 -01 46 53.83 L F51
2011-04-28 10:43:17 C 15 15 55.445 -01 47 00.59 L F51
2011-05-01 00:22:57 C 15 11 05.61 -02 07 42.8 u B67
2011-05-01 00:36:14 C 15 11 04.52 -02 07 47.5 u B67
2011-05-01 00:48:33 C 15 11 03.52 -02 07 51.2 u B67
2011-05-01 10:14:22 C 15 10 18.262 -02 11 07.12 L F51
2011-05-01 10:34:40 C 15 10 16.586 -02 11 14.29 L F51
2011-05-01 10:55:09 C 15 10 14.900 -02 11 21.50 L F51
2011-05-01 11:15:25 C 15 10 13.226 -02 11 28.65 L F51
2011-05-01 23:12:46 C 15 09 15.17 -02 15 46.3 c A24
2011-05-01 23:25:59 C 15 09 14.12 -02 15 50.3 c A24
2011-05-01 23:34:59 C 15 09 13.36 -02 15 53.6 c A24