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
2025-09-14 07:05:23 C 21 14 28.491 +15 10 27.64 X F52
2025-09-21 04:34:58 C 21 08 09.827 +14 24 17.71 V G96
2025-09-21 04:43:07 C 21 08 09.539 +14 24 15.52 V G96
2025-09-21 04:51:15 C 21 08 09.244 +14 24 13.10 V G96
2025-09-25 02:48:22 C 21 05 10.392 +13 55 58.94 V G96
2025-09-25 02:57:31 C 21 05 10.082 +13 55 55.78 V G96
2025-09-25 03:06:43 C 21 05 09.827 +13 55 53.69 V G96
2025-09-25 03:15:55 C 21 05 09.539 +13 55 50.84 V G96
2025-10-22 12:04:21 C 20 57 45.29 +10 41 23.4 V D29
2025-10-22 12:24:43 C 20 57 45.41 +10 41 18.1 V D29