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
2007-06-20 09:21:20 C 20 02 09.68 -17 12 19.2 o 691
2008-08-14 06:38:33 C 00 26 36.68 +38 35 11.2 o H55
2008-08-14 06:45:12 C 00 26 36.63 +38 35 15.2 o H55
2008-08-14 06:58:28 C 00 26 36.50 +38 35 24.4 o H55
2008-09-17 04:39:36 C 23 55 55.35 +45 43 28.5 o H55
2008-09-17 04:48:40 C 23 55 54.62 +45 43 31.9 o H55
2008-09-17 04:53:14 C 23 55 54.33 +45 43 33.5 o H55
2008-10-04 20:04:06 C 23 24 33.05 +46 08 17.2 c 560
2008-10-04 20:06:09 C 23 24 32.92 +46 08 16.9 c 560
2008-10-04 20:08:13 C 23 24 32.81 +46 08 16.6 c 560
2008-10-06 21:35:07 C 23 20 49.21 +45 58 29.1 r 130
2008-10-06 21:36:33 C 23 20 49.09 +45 58 28.4 r 130
2008-10-06 21:38:22 C 23 20 48.92 +45 58 28.4 r 130
2008-10-06 21:40:10 C 23 20 48.80 +45 58 27.7 r 130
2008-10-10 05:09:57 C 23 15 00.35 +45 37 14.3 18.6 c 704
2008-10-10 05:30:00 C 23 14 58.86 +45 37 07.1 19.0 c 704
2008-10-10 05:48:18 C 23 14 57.47 +45 37 02.0 19.1 c 704
2008-10-10 06:07:58 C 23 14 56.06 +45 36 55.1 19.5 c 704
2008-10-10 06:26:32 C 23 14 54.70 +45 36 50.2 19.2 c 704
2008-10-12 22:02:01 C 23 10 29.18 +45 15 00.0 v B15
2008-10-12 22:04:11 C 23 10 29.02 +45 14 59.2 v B15
2008-10-12 22:06:22 C 23 10 28.85 +45 14 58.2 v B15
2008-10-12 22:08:32 C 23 10 28.65 +45 14 57.1 v B15
2008-10-19 07:12:46 C 23 00 53.76 +44 06 44.7 r H45
2008-10-19 07:17:25 C 23 00 53.51 +44 06 41.4 r H45
2008-10-19 07:18:58 C 23 00 53.50 +44 06 41.2 r H45
2008-10-19 07:21:46 C 23 00 53.27 +44 06 39.3 r H45
2008-10-19 07:23:01 C 23 00 53.24 +44 06 39.0 r H45
2008-10-25 22:46:55 C 22 53 00.00 +42 35 29.9 c B37
2008-10-25 22:50:33 C 22 52 59.87 +42 35 28.2 c B37
2008-10-25 22:52:45 C 22 52 59.76 +42 35 26.6 c B37
2008-10-25 22:57:07 C 22 52 59.54 +42 35 23.9 c B37
2008-10-26 22:18:27 C 22 52 02.63 +42 20 38.7 c B37
2008-10-26 22:23:19 C 22 52 02.46 +42 20 35.7 c B37
2008-10-26 23:03:15 C 22 52 00.79 +42 20 09.1 c B37
2008-11-02 22:18:03 C 22 46 53.80 +40 26 52.7 o J41
2008-11-02 23:10:00 C 22 46 52.60 +40 26 15.7 o J41
2008-11-06 03:14:16 C 22 45 33.22 +39 31 43.8 18.6 c 704
2008-11-06 03:31:19 C 22 45 33.07 +39 31 31.6 19.2 c 704
2008-11-06 03:48:19 C 22 45 32.59 +39 31 18.8 18.6 c 704
2008-11-06 04:05:21 C 22 45 32.42 +39 31 04.9 18.7 c 704
2008-11-06 04:22:36 C 22 45 32.16 +39 30 54.3 19.1 c 704
2008-11-07 19:54:33 C 22 45 05.99 +39 02 02.3 v 204
2008-11-07 20:02:41 C 22 45 05.90 +39 01 56.2 v 204
2008-11-07 22:09:47 C 22 45 04.55 +39 00 22.1 v 204
2008-11-07 22:18:08 C 22 45 04.46 +39 00 15.8 v 204
2008-11-08 20:33:17 C 22 44 54.73 +38 43 59.0 c B37
2008-11-08 20:34:20 C 22 44 54.68 +38 43 57.6 c B37
2008-11-08 20:37:32 C 22 44 54.67 +38 43 55.1 c B37
2008-11-08 20:38:36 C 22 44 54.59 +38 43 54.8 c B37