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
2017-10-30 20:08:10 C 10 10 35.35 +14 43 57.4 q D29
2017-10-30 20:32:21 C 10 10 38.65 +14 43 13.4 q D29
2017-10-30 20:56:32 C 10 10 41.94 +14 42 29.8 q D29
2017-10-31 21:12:06 C 10 14 02.05 +13 58 16.8 q D29
2017-10-31 21:23:42 C 10 14 03.64 +13 57 55.4 q D29
2017-10-31 21:35:17 C 10 14 05.21 +13 57 34.3 q D29
2017-11-23 15:01:40 C 11 25 58.78 -03 52 33.2 U T08
2017-11-23 15:14:05 C 11 26 00.35 -03 52 59.0 U T08
2017-11-23 15:26:52 C 11 26 01.94 -03 53 24.7 U T08
2017-11-23 15:40:03 C 11 26 03.58 -03 53 52.8 U T08
2017-11-27 11:57:46 C 11 37 50.56 -07 00 16.1 U 703
2017-11-27 12:04:52 C 11 37 51.48 -07 00 30.4 U 703
2017-11-27 12:11:58 C 11 37 52.38 -07 00 43.3 U 703
2017-11-27 12:19:05 C 11 37 53.27 -07 00 58.9 U 703
2017-12-09 12:16:56 C 12 14 28.72 -16 28 12.4 U 703
2017-12-09 12:24:05 C 12 14 29.54 -16 28 26.2 U 703
2017-12-09 12:31:15 C 12 14 30.47 -16 28 40.5 U 703
2017-12-09 12:38:26 C 12 14 31.40 -16 28 54.4 U 703
2017-12-16 12:45:45 C 12 35 56.01 -21 41 29.1 U 703
2017-12-16 12:52:58 C 12 35 56.98 -21 41 41.7 U 703
2017-12-16 13:00:11 C 12 35 57.83 -21 41 53.7 U 703
2017-12-16 13:07:25 C 12 35 58.73 -21 42 07.5 U 703
2018-01-05 15:04:05 C 13 37 59.766 -34 39 54.65 U F51
2018-01-05 15:18:59 C 13 38 01.652 -34 40 15.71 U F51
2018-01-05 15:33:52 C 13 38 03.554 -34 40 36.78 U F51
2018-01-05 15:48:45 C 13 38 05.445 -34 40 57.86 U F51
2018-01-09 15:03:14 C 13 50 26.54 -36 51 01.2 U T08
2018-01-09 15:21:44 C 13 50 28.90 -36 51 25.5 U T08
2018-01-09 15:22:24 C 13 50 28.96 -36 51 24.7 U T08
2018-01-09 15:38:15 C 13 50 31.02 -36 51 47.6 U T08
2018-01-11 15:17:22 C 13 56 41.51 -37 53 48.4 U T05
2018-01-11 15:20:40 C 13 56 42.10 -37 53 53.2 U T05
2018-01-11 15:28:37 C 13 56 43.06 -37 54 03.1 U T05
2018-01-11 15:36:25 C 13 56 44.00 -37 54 13.4 U T05
2018-01-11 15:44:22 C 13 56 45.00 -37 54 23.4 U T05
2018-01-11 15:47:41 C 13 56 45.46 -37 54 27.7 U T05
2018-01-11 15:55:38 C 13 56 46.43 -37 54 37.9 U T05
2018-01-13 15:06:38 C 14 02 53.10 -38 54 03.4 U T08
2018-01-13 15:13:52 C 14 02 54.03 -38 54 11.0 U T08
2018-01-13 15:26:27 C 14 02 55.62 -38 54 27.9 U T08
2018-01-13 15:33:02 C 14 02 56.52 -38 54 35.4 U T08
2018-06-06 08:52:28 C 15 00 14.74 -46 45 24.9 U T08
2018-06-06 08:59:47 C 15 00 14.45 -46 45 18.1 U T08
2018-06-06 09:03:46 C 15 00 14.34 -46 45 14.1 U T08
2018-06-06 09:11:06 C 15 00 13.99 -46 45 07.4 U T08
2018-06-06 09:22:24 C 15 00 13.62 -46 44 56.2 U T08
2018-06-06 09:33:42 C 15 00 13.15 -46 44 45.0 U T08
2018-06-14 07:41:48 C 14 55 25.32 -43 40 56.0 U T05
2018-06-14 07:58:02 C 14 55 25.06 -43 40 40.8 U T05
2018-06-14 08:14:14 C 14 55 24.68 -43 40 24.1 U T05