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
2009-01-17 02:12:11 C 00 31 07.07 +24 04 33.5 18.8 c 704
2009-01-17 02:29:20 C 00 31 09.04 +24 04 29.1 18.6 c 704
2009-01-17 02:46:33 C 00 31 11.05 +24 04 24.5 18.2 c 704
2009-01-17 03:03:39 C 00 31 13.02 +24 04 18.8 18.6 c 704
2009-01-18 01:48:45 C 00 33 53.88 +23 57 55.9 18.5 c 704
2009-01-18 02:07:07 C 00 33 56.07 +23 57 50.9 18.8 c 704
2009-01-18 02:25:17 C 00 33 58.19 +23 57 46.0 18.6 c 704
2009-01-18 02:43:44 C 00 34 00.33 +23 57 39.9 18.7 c 704
2009-01-18 03:01:54 C 00 34 02.44 +23 57 35.1 18.8 c 704
2009-01-20 01:45:21 C 00 39 37.47 +23 44 40.8 r H45
2009-01-20 01:47:15 C 00 39 37.72 +23 44 40.6 r H45
2009-01-20 01:48:57 C 00 39 37.90 +23 44 40.3 r H45
2009-01-20 01:50:46 C 00 39 38.09 +23 44 39.5 r H45
2009-01-20 01:52:43 C 00 39 38.36 +23 44 38.8 r H45
2009-01-26 03:59:24 C 00 57 45.490 +23 05 46.12 645
2009-01-26 04:00:35 C 00 57 45.645 +23 05 45.87 645
2009-01-26 04:02:58 C 00 57 45.940 +23 05 45.17 645
2009-01-26 04:04:10 C 00 57 46.088 +23 05 44.68 645
2009-01-30 02:16:15 C 01 09 57.60 +22 41 21.2 r 703
2009-01-30 02:28:35 C 01 09 59.18 +22 41 17.8 r 703
2009-01-30 02:40:50 C 01 10 00.80 +22 41 14.8 r 703
2009-01-30 02:53:07 C 01 10 02.35 +22 41 11.4 r 703
2009-02-21 02:17:30 C 02 24 30.59 +20 12 28.4 18.8 c 704
2009-02-21 02:34:31 C 02 24 33.14 +20 12 22.4 19.1 c 704
2009-02-21 02:51:30 C 02 24 35.67 +20 12 16.9 19.0 c 704
2009-02-21 03:08:11 C 02 24 38.20 +20 12 12.0 19.1 c 704
2009-02-27 02:37:33 C 02 46 22.87 +19 22 34.3 r 703
2009-02-27 02:46:34 C 02 46 24.20 +19 22 30.2 r 703
2009-02-27 02:55:35 C 02 46 25.57 +19 22 27.2 r 703
2009-02-27 03:04:43 C 02 46 26.97 +19 22 23.8 r 703
2009-03-16 02:37:45 C 03 50 20.18 +16 26 28.7 r 703
2009-03-16 02:43:22 C 03 50 21.12 +16 26 26.1 r 703
2009-03-16 02:48:59 C 03 50 22.02 +16 26 21.6 r 703
2009-03-16 02:54:35 C 03 50 22.84 +16 26 20.2 r 703
2009-03-22 02:41:22 C 04 13 21.04 +15 10 36.7 18.5 c 704
2009-03-22 02:59:11 C 04 13 23.91 +15 10 27.5 19.1 c 704
2009-03-22 03:16:44 C 04 13 26.70 +15 10 17.5 19.4 c 704
2009-03-22 03:34:30 C 04 13 29.51 +15 10 07.9 19.0 c 704
2009-03-24 02:37:26 C 04 21 01.87 +14 43 48.2 r 703
2009-03-24 02:55:33 C 04 21 04.93 +14 43 37.0 r 703
2009-03-24 02:59:46 C 04 21 05.50 +14 43 34.8 r 703
2009-03-29 02:48:09 C 04 40 19.11 +13 33 11.0 18.6 c 704
2009-03-29 03:05:02 C 04 40 21.87 +13 32 59.8 18.9 c 704
2009-03-29 03:21:55 C 04 40 24.50 +13 32 50.3 18.6 c 704
2009-03-29 03:38:53 C 04 40 27.26 +13 32 39.9 18.8 c 704
2009-03-29 03:55:47 C 04 40 29.90 +13 32 28.4 18.9 c 704
2010-06-24 07:20:59 C 20 26 15.18 -11 57 07.5 r G96
2010-06-24 07:27:14 C 20 26 14.92 -11 57 06.7 r G96
2010-06-24 07:33:31 C 20 26 14.71 -11 57 05.4 r G96
2010-06-24 07:39:46 C 20 26 14.46 -11 57 04.7 r G96