138859 (2000 WN63)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5314892165 ± 2.53e-08
Semi-major axis (a)1.5731873110 AU ± 2.19e-09
Inclination (i)13.15514140° ± 3.83e-06
Long. of Asc. Node (Ω)55.86017010° ± 1.45e-05
Arg. of Perihelion (ω)144.43452672° ± 1.51e-05
Mean Anomaly (M)145.21848952° ± 3.79e-06
Mean Motion (n)0.4995070520°/day ± 1.04e-09
Perihelion dist (q)0.73705522 AU ± 3.98e-08
Aphelion dist (Q)2.40931940 AU ± 3.99e-08
Orbital Period1.97319793 yr ± 4.12e-09
Physical Parameters
H (abs. magnitude)18.98
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.267″
Uncertainty0
Orbit TypeApollo
MOID0.141493 AU
Observations Used287
Oppositions12
Arc Total2000-2025
First Observation Used2000-11-27
Last Observation Used2025-09-29
Observations (324)
Date Type RA Dec Mag Band Observatory
2017-08-16 12:35:13 C 00 14 31.713 -27 43 54.14 L F51
2017-08-16 12:47:17 C 00 14 30.811 -27 44 01.39 L F51
2017-08-16 13:11:26 C 00 14 28.993 -27 44 14.95 L F51
2018-11-07 12:20:47 C 07 56 41.43 +29 33 31.6 V G96
2018-11-07 12:30:42 C 07 56 42.44 +29 33 35.8 V G96
2018-11-07 12:39:21 C 07 56 43.26 +29 33 39.5 V G96
2018-12-04 08:19:35 C 09 16 40.39 +35 49 54.7 V 703
2018-12-04 08:26:46 C 09 16 41.54 +35 50 00.9 V 703
2018-12-04 08:33:57 C 09 16 42.68 +35 50 07.0 V 703
2018-12-04 08:41:09 C 09 16 43.81 +35 50 13.6 V 703
2018-12-12 11:18:22 C 09 53 47.50 +38 45 39.3 U I41
2018-12-12 11:19:43 C 09 53 47.79 +38 45 40.6 U I41
2018-12-12 12:46:31 C 09 54 06.37 +38 47 04.7 U I41
2018-12-12 12:47:57 C 09 54 06.67 +38 47 06.0 U I41
2018-12-16 12:01:53 C 10 16 48.31 +40 20 29.9 V 703
2018-12-16 12:08:28 C 10 16 49.99 +40 20 35.8 V 703
2018-12-16 12:14:39 C 10 16 51.47 +40 20 41.5 V 703
2018-12-16 12:20:47 C 10 16 53.22 +40 20 47.5 V 703
2018-12-20 14:45:57 C 10 44 39.15 +41 56 14.6 V T05
2018-12-20 14:59:31 C 10 44 43.24 +41 56 27.6 V T05
2018-12-20 15:14:04 C 10 44 47.61 +41 56 41.3 V T05
2018-12-20 15:28:10 C 10 44 51.81 +41 56 54.5 V T05
2019-01-04 10:46:36 C 13 12 22.40 +43 56 57.4 V 703
2019-01-04 10:54:26 C 13 12 26.43 +43 56 51.8 V 703
2019-01-04 11:02:16 C 13 12 30.39 +43 56 46.4 V 703
2019-01-04 11:10:06 C 13 12 34.18 +43 56 40.9 V 703
2019-01-08 12:43:15 C 14 02 31.67 +42 01 02.1 V 703
2019-01-08 12:50:21 C 14 02 35.21 +42 00 50.8 V 703
2019-01-08 12:57:28 C 14 02 38.79 +42 00 39.1 V 703
2019-01-08 13:04:34 C 14 02 42.37 +42 00 27.4 V 703
2019-01-12 02:44:34 S 14 45 30.35 +39 07 06.3 L C51
2019-01-12 05:53:48 S 14 47 01.92 +38 59 33.8 L C51
2019-01-12 07:27:52 S 14 47 47.32 +38 55 45.7 L C51
2019-01-12 10:36:22 S 14 49 18.02 +38 48 06.6 L C51
2019-08-04 13:06:53 C 00 43 45.774 -21 22 09.67 U F51
2019-08-04 13:21:56 C 00 43 45.207 -21 22 17.99 U F51
2019-08-04 13:36:59 C 00 43 44.655 -21 22 26.37 U F51
2019-08-04 13:52:02 C 00 43 44.100 -21 22 34.79 U F51
2019-08-09 13:56:37 C 00 38 57.619 -22 30 47.83 U F51
2019-08-09 14:12:25 C 00 38 56.864 -22 30 56.99 U F51
2019-08-09 14:28:13 C 00 38 56.111 -22 31 06.00 U F51
2019-08-09 14:44:00 C 00 38 55.349 -22 31 15.03 U F51
2020-11-17 14:22:50 C 09 11 53.025 +29 23 45.77 U F51
2020-11-17 14:39:01 C 09 11 55.554 +29 23 49.15 U F51
2020-11-17 14:55:17 C 09 11 58.071 +29 23 52.74 U F51
2020-11-17 15:11:32 C 09 12 00.593 +29 23 55.93 U F51
2020-11-29 09:13:38 C 10 02 39.47 +30 14 01.1 V G96
2020-11-29 09:21:06 C 10 02 40.99 +30 14 01.9 V G96
2020-11-29 09:28:34 C 10 02 42.48 +30 14 03.2 V G96
2020-11-29 09:36:00 C 10 02 43.98 +30 14 03.9 V G96