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
2018-06-14 08:35:46 C 14 55 24.33 -43 40 05.1 U T05
2018-06-14 09:00:02 C 14 55 23.85 -43 39 41.8 U T05
2019-05-08 14:14:46 C 21 35 32.076 -04 43 31.05 U F51
2019-05-08 14:21:30 C 21 35 32.226 -04 43 28.61 U F51
2019-05-08 14:28:26 C 21 35 32.389 -04 43 25.86 U F51
2019-05-08 14:35:13 C 21 35 32.530 -04 43 23.41 U F51
2019-07-01 09:53:41 C 21 35 49.87 +02 36 14.5 V G96
2019-07-01 10:04:05 C 21 35 49.57 +02 36 17.0 V G96
2019-07-01 10:14:29 C 21 35 49.31 +02 36 19.3 V G96
2019-07-01 10:24:52 C 21 35 49.03 +02 36 21.9 V G96
2019-07-03 13:39:48 C 21 34 26.118 +02 49 19.19 U F52
2019-07-03 13:53:56 C 21 34 25.709 +02 49 22.58 U F52
2019-07-03 14:08:03 C 21 34 25.297 +02 49 26.03 U F52
2019-07-03 14:22:05 C 21 34 24.879 +02 49 29.32 U F52
2019-07-06 12:19:09 C 21 32 20.876 +03 06 09.87 U F51
2019-07-06 12:36:12 C 21 32 20.315 +03 06 13.82 U F51
2019-07-06 12:53:21 C 21 32 19.771 +03 06 17.80 U F51
2019-07-06 13:10:31 C 21 32 19.218 +03 06 21.72 U F51
2019-07-24 11:32:10 C 21 15 28.389 +04 20 02.41 U F52
2019-07-24 11:48:59 C 21 15 27.610 +04 20 03.90 U F52
2019-07-24 12:05:48 C 21 15 26.803 +04 20 05.76 U F52
2019-07-24 12:22:42 C 21 15 26.015 +04 20 07.59 U F52
2019-07-28 11:21:08 C 21 10 56.814 +04 28 45.68 U F51
2019-07-28 11:39:13 C 21 10 55.918 +04 28 47.05 U F51
2019-07-28 11:57:13 C 21 10 55.029 +04 28 48.40 U F51
2019-07-28 12:15:05 C 21 10 54.146 +04 28 49.69 U F51
2019-07-30 11:45:27 C 21 08 35.206 +04 32 00.92 U F52
2019-07-30 12:02:19 C 21 08 34.356 +04 32 01.67 U F52
2019-07-30 12:19:12 C 21 08 33.519 +04 32 02.70 U F52
2019-07-30 12:36:05 C 21 08 32.654 +04 32 03.78 U F52
2019-08-08 10:20:02 C 20 57 47.106 +04 37 03.16 U F52
2019-08-08 10:37:49 C 20 57 46.169 +04 37 02.92 U F52
2019-08-08 10:55:37 C 20 57 45.241 +04 37 02.76 U F52
2019-08-09 10:12:11 C 20 56 34.169 +04 36 41.22 U F52
2019-08-09 10:30:02 C 20 56 33.250 +04 36 41.12 U F52
2019-08-09 10:47:53 C 20 56 32.312 +04 36 40.65 U F52
2019-08-09 11:05:44 C 20 56 31.379 +04 36 40.31 U F52
2019-08-21 03:42:52 C 20 42 35.63 +04 19 39.4 V G96
2019-08-21 03:50:56 C 20 42 35.24 +04 19 39.1 V G96
2019-08-21 03:59:01 C 20 42 34.84 +04 19 38.2 V G96
2019-08-21 04:07:06 C 20 42 34.40 +04 19 37.4 V G96
2019-10-19 06:34:17 C 20 16 04.498 +00 43 12.53 U F52
2019-10-19 06:51:59 C 20 16 04.734 +00 43 10.79 U F52
2019-10-19 07:09:36 C 20 16 04.954 +00 43 08.75 U F52
2019-10-19 07:27:12 C 20 16 05.177 +00 43 07.11 U F52
2019-10-23 05:08:51 C 20 17 31.148 +00 33 52.23 U F52
2019-10-23 05:23:52 C 20 17 31.390 +00 33 50.77 U F52
2019-10-23 05:38:49 C 20 17 31.625 +00 33 49.45 U F52
2019-10-23 05:53:40 C 20 17 31.880 +00 33 48.28 U F52
2019-10-27 05:09:45 C 20 19 20.289 +00 25 55.29 U F52