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
2021-05-15 13:40:11 C 20 23 59.279 -05 00 55.26 U F51
2021-05-15 13:42:58 C 20 23 59.676 -05 00 52.51 U F51
2021-05-15 13:56:02 C 20 24 01.440 -05 00 41.46 U F51
2021-05-15 13:58:50 C 20 24 01.824 -05 00 38.67 U F51
2021-06-07 09:39:48 C 21 49 47.53 +04 21 38.3 V G96
2021-06-07 09:47:16 C 21 49 48.82 +04 21 46.8 V G96
2021-06-07 09:54:43 C 21 49 50.10 +04 21 54.9 V G96
2021-06-07 10:02:11 C 21 49 51.39 +04 22 04.0 V G96
2021-06-21 10:26:52 C 22 53 25.04 +10 51 03.8 V G96
2021-06-21 10:37:02 C 22 53 27.04 +10 51 15.5 V G96
2021-06-21 10:47:13 C 22 53 29.04 +10 51 27.0 V G96
2021-06-21 10:57:24 C 22 53 31.05 +10 51 38.4 V G96
2021-07-10 13:03:45 C 00 29 03.99 +18 04 44.2 V T08
2021-07-10 13:12:38 C 00 29 05.80 +18 04 51.1 V T08
2021-07-10 13:26:58 C 00 29 08.76 +18 05 01.2 V T08
2021-07-10 13:30:58 C 00 29 09.55 +18 05 03.9 V T08
2021-08-02 12:54:24 S 02 16 11.98 +21 20 52.2 L C51
2021-08-02 17:37:20 S 02 17 00.28 +21 21 02.9 L C51
2021-08-02 19:11:24 S 02 17 16.31 +21 21 06.5 L C51
2021-08-02 20:45:39 S 02 17 32.23 +21 21 10.1 L C51
2021-08-02 23:53:47 S 02 18 04.24 +21 21 14.4 L C51
2021-08-03 01:27:51 S 02 18 20.21 +21 21 17.6 L C51
2021-08-03 07:44:30 S 02 19 23.93 +21 21 24.9 L C51
2021-08-03 09:18:33 S 02 19 39.62 +21 21 27.0 L C51
2021-08-03 14:00:56 S 02 20 27.30 +21 21 30.6 L C51
2021-08-03 15:35:00 S 02 20 43.33 +21 21 33.4 L C51
2021-08-03 20:17:23 S 02 21 30.51 +21 21 36.4 L C51
2021-08-04 00:59:46 S 02 22 17.71 +21 21 38.3 L C51
2021-08-04 04:07:54 S 02 22 49.55 +21 21 35.2 L C51
2021-08-04 05:42:09 S 02 23 04.83 +21 21 37.8 L C51
2021-08-04 07:16:14 S 02 23 20.61 +21 21 41.1 L C51
2021-08-04 08:50:17 S 02 23 36.12 +21 21 36.6 L C51
2021-08-11 14:15:27 C 02 50 45.65 +21 07 48.8 V T08
2021-08-11 14:18:06 C 02 50 45.99 +21 07 48.5 V T08
2021-08-11 14:26:43 C 02 50 47.25 +21 07 47.7 V T08
2021-08-11 14:35:32 C 02 50 48.47 +21 07 46.0 V T08
2021-09-06 11:37:10 C 03 59 13.17 +17 45 08.7 V 703
2021-09-06 11:42:21 C 03 59 13.42 +17 45 06.0 V 703
2021-09-06 11:52:42 C 03 59 14.11 +17 45 02.6 V 703
2021-09-09 10:51:57 C 04 04 07.62 +17 11 52.4 V G96
2021-09-09 11:00:07 C 04 04 08.11 +17 11 48.4 V G96
2021-09-09 11:11:09 C 04 04 08.78 +17 11 43.2 V G96
2021-09-09 11:20:31 C 04 04 09.34 +17 11 38.8 V G96
2021-09-10 10:51:56 C 04 05 38.44 +17 00 20.5 V 703
2021-09-10 10:58:19 C 04 05 38.76 +17 00 17.1 V 703
2021-09-10 11:04:42 C 04 05 39.15 +17 00 14.4 V 703
2021-09-10 11:11:04 C 04 05 39.55 +17 00 11.6 V 703
2021-09-10 18:58:01 C 04 06 08.27 +16 56 24.6 V D29
2021-09-10 18:59:17 C 04 06 08.33 +16 56 24.0 V D29
2021-09-10 19:18:22 C 04 06 09.49 +16 56 16.9 V D29