499307 (2009 WC52)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5541735048 ± 2.78e-08
Semi-major axis (a)2.5216824044 AU ± 4.05e-09
Inclination (i)7.15379425° ± 2.64e-06
Long. of Asc. Node (Ω)178.63347776° ± 1.94e-05
Arg. of Perihelion (ω)149.27769926° ± 2.02e-05
Mean Anomaly (M)28.32506445° ± 2.74e-06
Mean Motion (n)0.2461368816°/day ± 5.94e-10
Perihelion dist (q)1.12423283 AU ± 7.02e-08
Aphelion dist (Q)3.91913198 AU ± 7.04e-08
Orbital Period4.00438275 yr ± 9.66e-09
Physical Parameters
H (abs. magnitude)18.68
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.263″
Uncertainty0
Orbit TypeAmor
MOID0.127084 AU
Observations Used503
Oppositions12
Arc Total2009-2025
First Observation Used2009-11-22
Last Observation Used2025-12-25
Observations (569)
Date Type RA Dec Mag Band Observatory
2021-09-10 19:19:38 C 04 06 09.47 +16 56 13.4 V D29
2021-09-10 19:38:44 C 04 06 10.58 +16 56 05.2 V D29
2021-09-10 19:40:00 C 04 06 10.64 +16 56 05.0 V D29
2021-09-11 09:10:35 C 04 06 59.55 +16 49 28.1 U I41
2021-09-11 10:35:38 C 04 07 04.28 +16 48 47.5 U I41
2021-09-13 10:44:53 C 04 09 45.51 +16 24 56.5 V 703
2021-09-13 10:50:42 C 04 09 45.72 +16 24 54.2 V 703
2021-09-13 11:02:21 C 04 09 46.38 +16 24 48.3 V 703
2021-09-13 11:29:35 C 04 09 47.70 +16 24 34.6 U I41
2021-09-13 11:36:02 C 04 09 48.03 +16 24 31.3 U I41
2021-09-15 12:37:43 C 04 12 15.151 +15 59 44.80 U F52
2021-09-15 13:14:12 C 04 12 16.710 +15 59 26.50 U F52
2021-09-15 13:32:24 C 04 12 17.485 +15 59 17.30 U F52
2021-09-16 10:06:23 C 04 13 13.74 +15 48 40.8 V 703
2021-09-16 10:13:58 C 04 13 14.10 +15 48 36.5 V 703
2021-09-16 10:21:33 C 04 13 14.37 +15 48 31.9 V 703
2021-09-16 10:29:08 C 04 13 14.64 +15 48 28.8 V 703
2021-10-07 08:54:34 C 04 20 29.34 +11 14 13.1 V G96
2021-10-07 09:02:00 C 04 20 29.20 +11 14 08.9 V G96
2021-10-07 09:09:23 C 04 20 29.07 +11 14 04.8 V G96
2021-10-07 09:16:46 C 04 20 28.93 +11 14 00.7 V G96
2021-10-13 08:29:43 C 04 17 19.26 +09 55 36.4 V 703
2021-10-13 08:37:17 C 04 17 18.91 +09 55 32.4 V 703
2021-10-13 08:52:25 C 04 17 18.47 +09 55 24.3 V 703
2021-10-13 11:12:26 C 04 17 14.58 +09 54 12.5 V T08
2021-10-13 11:18:25 C 04 17 14.46 +09 54 08.7 V T08
2021-10-13 11:23:45 C 04 17 14.23 +09 54 06.1 V T08
2021-10-13 11:33:43 C 04 17 13.89 +09 54 00.4 V T08
2021-10-15 08:28:16 C 04 15 49.14 +09 30 03.6 V G96
2021-10-15 08:35:52 C 04 15 48.85 +09 29 59.7 V G96
2021-10-15 08:43:28 C 04 15 48.57 +09 29 55.6 V G96
2021-10-15 08:51:04 C 04 15 48.29 +09 29 51.6 V G96
2021-10-16 08:20:43 C 04 14 59.70 +09 17 32.6 V 703
2021-10-16 08:28:23 C 04 14 59.51 +09 17 29.2 V 703
2021-10-16 08:36:04 C 04 14 59.17 +09 17 23.7 V 703
2021-10-16 08:46:21 C 04 14 58.89 +09 17 17.9 V 703
2021-10-17 11:22:06 C 04 14 00.536 +09 03 34.65 U F52
2021-10-17 11:38:42 C 04 13 59.862 +09 03 26.16 U F52
2021-10-17 12:11:52 C 04 13 58.468 +09 03 09.04 U F52
2021-10-28 08:36:36 C 04 01 53.03 +07 00 23.7 V 703
2021-10-28 08:44:14 C 04 01 52.57 +07 00 21.2 V 703
2021-10-28 08:51:51 C 04 01 52.09 +07 00 17.8 V 703
2021-10-28 08:59:28 C 04 01 51.73 +07 00 14.5 V 703
2021-10-28 10:01:51 C 04 01 48.13 +06 59 48.4 V G96
2021-10-28 10:13:33 C 04 01 47.47 +06 59 43.4 V G96
2021-10-28 10:20:58 C 04 01 47.05 +06 59 40.2 V G96
2021-10-28 10:28:22 C 04 01 46.63 +06 59 37.2 V G96
2021-10-31 08:17:12 C 03 57 58.72 +06 31 38.6 V 703
2021-10-31 08:24:53 C 03 57 58.26 +06 31 35.8 V 703
2021-10-31 08:32:33 C 03 57 57.80 +06 31 32.7 V 703