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
2012-01-21 19:28:41 C 02 34 34.60 +20 11 45.4 c A24
2012-01-21 19:33:44 C 02 34 35.27 +20 11 34.9 c A53
2012-01-21 19:49:41 C 02 34 37.44 +20 11 01.6 c A53
2012-01-21 20:21:50 C 02 34 41.82 +20 09 54.4 c A53
2012-01-21 21:32:00 C 02 34 51.40 +20 07 27.8 c A24
2012-01-21 21:33:02 C 02 34 51.60 +20 07 24.9 c A24
2012-01-22 19:12:18 C 02 37 54.39 +19 22 26.4 c A24
2012-01-22 19:13:20 C 02 37 54.51 +19 22 24.3 c A24
2012-01-22 20:18:59 C 02 38 03.50 +19 20 07.4 c A24
2012-01-22 20:20:01 C 02 38 03.66 +19 20 05.1 c A24
2012-01-23 03:22:24 C 02 39 03.19 +19 05 33.2 16.6 c 704
2012-01-23 03:41:54 C 02 39 05.83 +19 04 52.5 17.0 c 704
2012-01-23 04:01:22 C 02 39 08.52 +19 04 12.2 16.7 c 704
2012-01-23 10:27:01 C 02 40 03.23 +18 50 53.1 u 379
2012-01-23 10:53:41 C 02 40 06.86 +18 49 58.1 u 379
2012-01-23 11:16:14 C 02 40 09.94 +18 49 10.9 u 379
2012-01-24 19:41:55 C 02 44 45.52 +17 42 09.4 c A24
2012-01-24 19:42:57 C 02 44 45.66 +17 42 07.6 c A24
2012-01-24 20:48:00 C 02 44 54.67 +17 39 52.4 c A24
2012-01-24 20:49:02 C 02 44 54.82 +17 39 50.4 c A24
2012-01-25 09:09:14 C 02 46 40.81 +17 14 32.7 u 379
2012-01-25 09:17:29 C 02 46 41.93 +17 14 15.6 u 379
2012-01-25 09:20:09 C 02 46 42.27 +17 14 10.4 u 379
2012-01-25 09:42:25 C 02 46 45.38 +17 13 24.7 u 379
2012-01-25 18:42:08 C 02 48 02.15 +16 54 53.4 c A24
2012-01-25 18:43:10 C 02 48 02.29 +16 54 51.4 c A24
2012-01-25 19:48:07 C 02 48 11.29 +16 52 37.7 c A24
2012-01-25 19:49:10 C 02 48 11.43 +16 52 35.7 c A24
2012-01-25 19:56:40 C 02 48 12.45 +16 52 20.3 u 160
2012-01-25 19:59:51 C 02 48 12.89 +16 52 13.8 u 160
2012-01-25 20:03:02 C 02 48 13.33 +16 52 07.2 u 160
2012-01-25 20:38:05 C 02 48 18.20 +16 50 54.9 u 160
2012-01-25 20:41:10 C 02 48 18.63 +16 50 48.5 u 160
2012-01-25 20:44:15 C 02 48 19.06 +16 50 42.2 u 160
2012-01-26 18:57:04 C 02 51 29.89 +16 05 18.3 c A24
2012-01-26 18:58:07 C 02 51 30.03 +16 05 16.3 c A24
2012-01-26 19:52:26 C 02 51 37.59 +16 03 25.2 c A24
2012-01-26 19:53:29 C 02 51 37.73 +16 03 22.9 c A24
2012-02-01 14:47:15 C 03 11 40.80 +11 25 27.2 r 168
2012-02-01 16:29:10 C 03 11 55.32 +11 22 07.5 r 168
2012-02-01 16:31:45 C 03 11 55.65 +11 22 03.0 r 168
2012-02-01 16:33:45 C 03 11 55.94 +11 21 58.7 r 168
2012-02-14 19:20:21 C 03 57 51.42 +01 48 00.3 c A24
2012-02-14 19:21:23 C 03 57 51.57 +01 47 58.3 c A24
2012-02-14 20:32:34 C 03 58 01.72 +01 45 59.0 c A24
2012-02-14 20:33:38 C 03 58 01.88 +01 45 57.4 c A24
2012-02-15 18:53:23 C 04 01 17.61 +01 08 53.3 c A24
2012-02-15 18:54:25 C 04 01 17.76 +01 08 51.1 c A24
2012-02-15 19:01:51 C 04 01 18.96 +01 08 40.1 w J97
2012-02-15 19:14:00 C 04 01 20.61 +01 08 20.7 w J97