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
2012-02-15 19:28:37 C 04 01 22.72 +01 07 56.4 w J97
2012-02-15 20:03:31 C 04 01 27.61 +01 06 57.6 c A24
2012-02-15 20:04:33 C 04 01 27.75 +01 06 55.8 c A24
2012-02-16 19:02:28 C 04 04 48.81 +00 29 22.5 c A24
2012-02-16 19:03:30 C 04 04 48.98 +00 29 20.7 c A24
2012-02-16 20:12:33 C 04 04 58.89 +00 27 28.4 c A24
2012-02-16 20:13:35 C 04 04 59.00 +00 27 26.2 c A24
2012-02-17 19:05:40 C 04 08 19.13 -00 09 21.7 c A24
2012-02-17 19:06:42 C 04 08 19.26 -00 09 23.3 c A24
2012-02-17 20:15:44 C 04 08 29.12 -00 11 13.4 c A24
2012-02-17 20:16:46 C 04 08 29.37 -00 11 15.4 c A24
2012-02-19 02:17:00 C 04 12 51.77 -00 58 36.1 17.0 c 704
2012-02-19 02:34:53 C 04 12 54.33 -00 59 04.4 17.1 c 704
2012-02-19 02:52:22 C 04 12 56.80 -00 59 32.2 17.3 c 704
2012-02-19 03:09:34 C 04 12 59.23 -00 59 58.5 17.1 c 704
2012-02-19 03:26:55 C 04 13 01.68 -01 00 26.0 17.1 c 704
2012-02-19 19:43:06 C 04 15 23.96 -01 25 43.6 w I99
2012-02-19 19:44:58 C 04 15 24.30 -01 25 46.3 w I99
2012-02-19 19:46:50 C 04 15 24.47 -01 25 48.8 w I99
2012-02-21 18:37:28 C 04 22 13.53 -02 36 59.5 c A24
2012-02-21 18:38:30 C 04 22 13.69 -02 37 01.1 c A24
2012-02-21 19:47:51 C 04 22 23.58 -02 38 45.0 c A24
2012-02-21 19:48:53 C 04 22 23.71 -02 38 46.3 c A24
2012-02-22 18:23:43 C 04 25 40.95 -03 12 11.5 c A24
2012-02-22 18:24:45 C 04 25 41.08 -03 12 13.1 c A24
2012-02-22 19:35:06 C 04 25 51.09 -03 13 56.1 c A24
2012-02-22 19:36:08 C 04 25 51.23 -03 13 57.7 c A24
2012-02-23 19:20:34 C 04 29 18.20 -03 48 27.0 u A81
2012-02-23 19:25:59 C 04 29 18.96 -03 48 34.7 u A81
2012-02-23 19:31:24 C 04 29 19.72 -03 48 42.1 u A81
2012-02-23 19:36:48 C 04 29 20.51 -03 48 50.3 u A81
2012-02-24 18:45:09 C 04 32 42.34 -04 21 52.6 c A24
2012-02-24 18:46:11 C 04 32 42.50 -04 21 54.1 c A24
2012-02-24 19:55:28 C 04 32 52.30 -04 23 32.1 c A24
2012-02-24 19:56:30 C 04 32 52.46 -04 23 33.6 c A24
2012-02-25 17:36:42 C 04 36 01.45 -04 53 56.0 u C73
2012-02-25 17:37:52 C 04 36 01.60 -04 53 57.5 u C73
2012-02-25 17:39:01 C 04 36 01.78 -04 53 59.3 u C73
2012-02-25 17:40:11 C 04 36 01.91 -04 54 01.4 u C73
2012-02-25 17:41:20 C 04 36 02.05 -04 54 02.6 u C73
2012-02-25 17:42:30 C 04 36 02.22 -04 54 04.1 u C73
2012-02-25 17:43:39 C 04 36 02.34 -04 54 05.9 u C73
2012-03-23 23:09:29 C 06 10 31.49 -16 24 53.3 L Y28
2012-03-23 23:10:32 C 06 10 31.64 -16 24 54.1 L Y28
2012-03-23 23:11:35 C 06 10 31.78 -16 24 54.8 L Y28
2012-03-23 23:17:56 C 06 10 32.69 -16 24 59.6 L Y28
2012-03-23 23:18:59 C 06 10 32.83 -16 25 00.4 L Y28
2012-03-23 23:20:02 C 06 10 32.98 -16 25 01.2 L Y28
2012-03-23 23:21:04 C 06 10 33.14 -16 25 02.0 L Y28
2012-03-23 23:22:07 C 06 10 33.29 -16 25 02.8 L Y28