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
2008-11-08 20:40:43 C 22 44 54.69 +38 43 51.6 c B37
2008-11-13 20:27:41 C 22 44 54.60 +37 15 38.3 c B37
2008-11-13 20:37:32 C 22 44 54.62 +37 15 31.0 c B37
2008-11-13 20:47:28 C 22 44 54.71 +37 15 23.2 c B37
2008-11-15 18:42:17 C 22 45 18.61 +36 41 39.4 c A53
2008-11-15 18:57:42 C 22 45 18.77 +36 41 27.6 c A53
2008-11-15 19:16:26 C 22 45 18.97 +36 41 13.6 c A53
2008-11-15 20:24:21 C 22 45 19.56 +36 40 23.4 c 560
2008-11-15 20:27:15 C 22 45 19.58 +36 40 21.3 c 560
2008-11-15 20:28:24 C 22 45 19.58 +36 40 20.5 c 560
2008-11-15 22:56:15 C 22 45 20.97 +36 38 30.3 c B37
2008-11-15 23:05:15 C 22 45 21.18 +36 38 24.3 c B37
2008-11-15 23:20:31 C 22 45 21.36 +36 38 13.5 c B37
2008-11-15 23:47:27 C 22 45 21.50 +36 37 55.3 c B37
2008-11-15 23:50:14 C 22 45 21.67 +36 37 51.6 c B37
2008-11-16 19:19:59 C 22 45 36.62 +36 23 37.9 c B37
2008-11-16 19:23:34 C 22 45 36.57 +36 23 35.0 c B37
2008-11-23 04:03:20 C 22 48 47.63 +34 33 52.0 18.6 c 704
2008-11-23 04:20:21 C 22 48 48.12 +34 33 38.3 18.9 c 704
2008-11-23 04:37:19 C 22 48 48.59 +34 33 27.2 18.7 c 704
2008-11-23 04:54:18 C 22 48 49.03 +34 33 15.0 18.6 c 704
2008-11-23 05:11:16 C 22 48 49.50 +34 33 03.2 18.5 c 704
2008-11-26 17:20:42 C 22 51 32.61 +33 34 46.9 c B23
2008-11-26 17:24:14 C 22 51 32.72 +33 34 44.9 c B23
2008-11-26 17:27:46 C 22 51 32.85 +33 34 42.2 c B23
2008-11-26 17:31:18 C 22 51 32.98 +33 34 40.0 c B23
2008-11-26 17:34:50 C 22 51 33.08 +33 34 37.2 c B23
2008-12-05 17:54:36 C 23 01 22.62 +31 15 13.0 o B37
2008-12-05 19:17:43 C 23 01 26.95 +31 14 23.0 o B37
2008-12-05 19:32:01 C 23 01 27.69 +31 14 13.6 o B37
2008-12-05 21:08:02 C 23 01 32.78 +31 13 14.8 o B37
2008-12-05 21:14:59 C 23 01 33.16 +31 13 09.8 o B37
2008-12-06 01:50:40 C 23 01 48.54 +31 10 26.3 r G96
2008-12-06 01:58:43 C 23 01 48.97 +31 10 21.5 r G96
2008-12-06 02:06:45 C 23 01 49.40 +31 10 16.5 r G96
2008-12-06 03:01:50 C 23 01 52.28 +31 09 43.7 r 703
2008-12-06 03:10:29 C 23 01 52.75 +31 09 39.0 r 703
2008-12-06 03:19:01 C 23 01 53.18 +31 09 33.6 r 703
2008-12-06 03:27:44 C 23 01 53.65 +31 09 27.1 r 703
2008-12-19 01:44:30 C 23 22 34.40 +28 21 15.9 18.7 c 704
2008-12-19 02:02:37 C 23 22 35.73 +28 21 07.4 19.1 c 704
2008-12-19 02:20:45 C 23 22 37.15 +28 20 58.9 19.1 c 704
2008-12-19 02:38:53 C 23 22 38.55 +28 20 51.0 18.9 c 704
2008-12-19 02:57:02 C 23 22 39.88 +28 20 42.1 19.2 c 704
2008-12-21 19:41:11 C 23 27 49.61 +27 50 15.1 r J27
2008-12-21 20:36:17 C 23 27 53.95 +27 49 50.5 r J27
2009-01-06 18:49:32 C 00 03 40.20 +25 20 07.9 r B12
2009-01-09 17:27:38 C 00 11 11.26 +24 57 15.1 c B23
2009-01-09 17:34:13 C 00 11 12.27 +24 57 13.9 c B23
2009-01-17 01:54:58 C 00 31 05.10 +24 04 38.8 18.4 c 704