209924 (2005 WS55)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4534675454 ± 1.91e-08
Semi-major axis (a)2.0295309131 AU ± 4.25e-09
Inclination (i)23.76631359° ± 2.80e-06
Long. of Asc. Node (Ω)283.54353999° ± 4.74e-06
Arg. of Perihelion (ω)203.35135816° ± 6.20e-06
Mean Anomaly (M)272.76283895° ± 5.21e-06
Mean Motion (n)0.3408935390°/day ± 1.07e-09
Perihelion dist (q)1.10920451 AU ± 3.88e-08
Aphelion dist (Q)2.94985731 AU ± 3.92e-08
Orbital Period2.89130233 yr ± 9.08e-09
Physical Parameters
H (abs. magnitude)16.29
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.324″
Uncertainty0
Orbit TypeAmor
MOID0.148029 AU
Observations Used1135
Oppositions15
Arc Total2002-2025
First Observation Used2002-07-26
Last Observation Used2025-10-22
Observations (1160)
Date Type RA Dec Mag Band Observatory
2002-07-26 11:12:32 C 22 54 29.24 +22 05 26.4 c 644
2002-07-26 11:27:30 C 22 54 28.83 +22 05 32.8 c 644
2002-07-26 11:42:25 C 22 54 28.41 +22 05 39.0 c 644
2004-06-24 10:35:29 C 19 24 20.14 -22 09 02.3 c 568
2004-06-24 11:15:15 C 19 24 17.83 -22 08 56.4 c 568
2004-06-25 11:09:50 C 19 22 56.91 -22 05 24.1 c 568
2005-10-03 04:29:45 C 22 17 59.16 +32 37 07.5 o 644
2005-10-03 05:01:57 C 22 17 57.45 +32 36 54.8 o 644
2005-10-03 05:33:11 C 22 17 55.77 +32 36 42.5 o 644
2005-11-22 01:54:08 C 22 08 01.55 +22 55 58.4 o 644
2005-11-22 02:24:50 C 22 08 02.53 +22 55 46.3 o 644
2005-11-22 02:55:52 C 22 08 03.58 +22 55 34.6 o 644
2005-11-29 03:01:19 C 22 14 40.14 +21 56 48.6 19.4 c 704
2005-11-29 03:19:47 C 22 14 40.92 +21 56 42.7 19.8 c 704
2005-11-29 03:38:10 C 22 14 41.73 +21 56 34.8 20.5 c 704
2005-11-29 04:15:33 C 22 14 43.42 +21 56 25.2 20.1 c 704
2005-11-30 01:23:34 C 22 15 40.48 +21 49 48.8 19.7 c 704
2005-11-30 01:34:31 C 22 15 41.00 +21 49 46.2 c 711
2005-11-30 01:41:58 C 22 15 41.33 +21 49 42.7 19.9 c 704
2005-11-30 01:51:02 C 22 15 41.76 +21 49 39.8 r G96
2005-11-30 01:53:13 C 22 15 41.70 +21 49 39.6 c 711
2005-11-30 01:58:16 C 22 15 42.04 +21 49 37.6 r G96
2005-11-30 02:00:17 C 22 15 42.15 +21 49 37.3 19.8 c 704
2005-11-30 02:11:45 C 22 15 42.64 +21 49 32.7 c 711
2005-11-30 02:12:40 C 22 15 42.73 +21 49 32.0 r G96
2005-11-30 02:18:48 C 22 15 42.95 +21 49 31.6 19.8 c 704
2005-11-30 02:37:19 C 22 15 43.77 +21 49 26.0 19.7 c 704
2005-11-30 03:38:24 C 22 15 46.47 +21 49 06.6 c 854
2005-11-30 03:46:42 C 22 15 46.86 +21 49 04.0 c 854
2005-11-30 03:55:03 C 22 15 47.29 +21 49 00.0 c 854
2005-11-30 04:05:23 C 22 15 47.63 +21 48 56.9 r 734
2005-11-30 04:14:44 C 22 15 48.10 +21 48 53.3 r 734
2005-12-01 01:23:25 C 22 16 46.96 +21 42 31.8 19.0 c 704
2005-12-01 02:00:46 C 22 16 48.62 +21 42 20.3 19.6 c 704
2005-12-01 02:19:40 C 22 16 49.50 +21 42 13.7 19.7 c 704
2005-12-01 02:38:43 C 22 16 50.34 +21 42 08.8 19.6 c 704
2005-12-29 01:28:28 C 22 59 21.19 +19 49 20.7 c 711
2005-12-29 01:38:37 C 22 59 21.93 +19 49 20.2 c 711
2005-12-29 01:48:43 C 22 59 22.76 +19 49 19.5 c 711
2005-12-29 02:13:44 C 22 59 24.69 +19 49 17.8 r 448
2005-12-29 02:34:48 C 22 59 26.34 +19 49 17.2 r 448
2005-12-29 02:49:01 C 22 59 27.44 +19 49 15.9 r 448
2006-02-23 02:19:11 C 01 19 04.75 +22 05 46.4 o 696
2006-02-23 02:21:20 C 01 19 05.10 +22 05 47.9 o 696
2007-06-10 09:10:15 C 20 11 35.30 -17 46 26.0 r 448
2007-06-16 09:59:33 C 20 06 12.33 -17 25 24.8 o 691
2007-06-16 10:25:02 C 20 06 11.21 -17 25 20.6 o 691
2007-06-16 10:50:32 C 20 06 10.16 -17 25 17.0 o 691
2007-06-20 08:30:21 C 20 02 12.10 -17 12 26.5 o 691
2007-06-20 08:55:51 C 20 02 10.90 -17 12 23.0 o 691