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
2016-12-20 12:37:20 C 08 32 24.90 +50 28 47.1 L T05
2016-12-21 09:39:13 C 08 34 37.34 +51 19 39.1 q H45
2016-12-21 09:40:32 C 08 34 37.45 +51 19 42.4 q H45
2016-12-21 09:42:06 C 08 34 37.60 +51 19 46.0 q H45
2016-12-21 09:43:14 C 08 34 37.72 +51 19 48.9 q H45
2016-12-21 09:44:31 C 08 34 37.85 +51 19 52.2 q H45
2016-12-21 09:45:49 C 08 34 37.97 +51 19 55.3 q H45
2016-12-21 22:16:26 C 08 36 02.16 +51 50 53.3 u 107
2016-12-21 22:21:41 C 08 36 02.76 +51 51 06.1 u 107
2016-12-21 22:28:15 C 08 36 03.42 +51 51 22.8 u 107
2016-12-24 11:48:48 C 08 43 24.39 +54 32 47.1 L T05
2016-12-24 12:04:35 C 08 43 26.33 +54 33 32.2 L T05
2016-12-24 12:28:46 C 08 43 29.22 +54 34 38.5 L T05
2016-12-24 12:36:54 C 08 43 30.18 +54 35 02.3 L T05
2016-12-28 11:25:30 C 08 57 56.13 +59 13 52.5 L T05
2016-12-28 11:51:23 C 08 58 00.31 +59 15 15.2 L T05
2016-12-28 12:06:03 C 08 58 02.85 +59 16 00.6 L T05
2016-12-28 12:11:11 C 08 58 03.64 +59 16 18.3 L T05
2016-12-29 09:54:14 C 09 02 05.94 +60 25 11.3 q H45
2016-12-29 09:55:36 C 09 02 06.05 +60 25 16.3 q H45
2016-12-29 09:57:37 C 09 02 06.56 +60 25 23.3 q H45
2016-12-29 09:59:04 C 09 02 06.81 +60 25 28.0 q H45
2016-12-29 10:00:13 C 09 02 06.98 +60 25 31.4 q H45
2016-12-29 10:01:42 C 09 02 07.30 +60 25 35.9 q H45
2016-12-31 18:49:56 C 09 14 46.02 +63 34 44.1 q D29
2016-12-31 19:10:18 C 09 14 50.84 +63 35 53.7 q D29
2017-01-04 22:04:41 C 09 48 20.42 +69 28 31.0 q Z48
2017-01-04 22:28:54 C 09 48 31.17 +69 30 01.5 q Z48
2017-01-04 22:59:50 C 09 48 44.92 +69 31 56.7 q Z48
2017-01-05 01:58:16 C 09 50 08.31 +69 42 37.8 q W25
2017-01-05 02:07:56 C 09 50 12.80 +69 43 14.4 q W25
2017-01-05 10:12:34 C 09 54 03.24 +70 13 13.0 L T05
2017-01-05 10:24:46 C 09 54 08.84 +70 13 59.2 L T05
2017-01-05 10:37:18 C 09 54 14.95 +70 14 47.0 L T05
2017-01-05 11:02:36 C 09 54 26.69 +70 16 21.4 L T05
2017-01-05 11:18:59 C 09 54 34.40 +70 17 22.0 L T05
2017-01-06 19:44:19 C 10 12 37.32 +72 14 55.0 o 107
2017-01-06 19:50:56 C 10 12 41.29 +72 15 20.1 o 107
2017-01-06 19:57:32 C 10 12 45.67 +72 15 44.3 o 107
2017-01-08 10:48:44 C 10 41 02.36 +74 33 06.4 q W25
2017-01-08 10:51:05 C 10 41 04.35 +74 33 14.0 q W25
2017-01-09 00:43:55 C 10 53 43.90 +75 18 55.1 q W25
2017-01-09 00:53:44 C 10 53 53.15 +75 19 28.2 q W25
2017-01-22 21:08:42 S 18 01 14.971 +66 54 21.31 L C51
2017-01-23 00:17:23 S 18 02 43.865 +66 38 09.89 L C51
2017-01-25 10:03:34 C 18 25 08.77 +61 33 57.5 q W25
2017-01-25 10:13:24 C 18 25 11.98 +61 33 05.1 q W25
2017-01-28 10:13:27 C 18 44 11.63 +55 06 42.2 q W25
2017-01-28 10:23:19 C 18 44 13.73 +55 05 50.7 q W25
2017-01-28 11:06:45 C 18 44 23.00 +55 02 02.0 q W25