2021 WC8

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7006930520 ± 2.67e-08
Semi-major axis (a)2.6170587022 AU ± 9.83e-09
Inclination (i)17.71858006° ± 8.12e-06
Long. of Asc. Node (Ω)318.53060647° ± 6.25e-06
Arg. of Perihelion (ω)241.15846539° ± 1.23e-05
Mean Anomaly (M)311.64109446° ± 1.69e-06
Mean Motion (n)0.2328048801°/day ± 1.31e-09
Perihelion dist (q)0.78330385 AU ± 7.00e-08
Aphelion dist (Q)4.45081355 AU ± 7.19e-08
Orbital Period4.23370113 yr ± 2.39e-08
Physical Parameters
H (abs. magnitude)19.81
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.301″
Uncertainty0
Orbit TypeApollo
MOID0.005011 AU
Observations Used227
Oppositions17
Arc Total2000-2022
First Observation Used2000-11-26
Last Observation Used2022-07-26
Observations (236)
Date Type RA Dec Mag Band Observatory
2022-01-20 19:02:01 C 06 48 55.42 +53 18 14.6 V B49
2022-01-20 19:05:50 C 06 48 54.46 +53 18 13.8 V B49
2022-01-20 19:07:30 C 06 48 53.79 +53 18 12.8 V 204
2022-01-20 19:17:15 C 06 48 51.60 +53 18 10.3 V B49
2022-01-20 19:24:18 C 06 48 49.59 +53 18 08.2 X G15
2022-01-20 19:36:16 C 06 48 46.85 +53 18 04.5 V B49
2022-01-20 19:49:41 C 06 48 43.25 +53 17 59.8 X G15
2022-01-20 20:27:37 C 06 48 34.13 +53 17 50.0 V Z33
2022-01-20 20:48:15 C 06 48 28.89 +53 17 43.7 V Z33
2022-01-20 21:09:11 C 06 48 23.59 +53 17 37.1 V Z33
2022-01-20 21:21:52 C 06 48 20.08 +53 17 27.5 q J69
2022-01-20 21:27:12 C 06 48 18.75 +53 17 25.6 q J69
2022-01-20 22:50:43 C 06 47 57.65 +53 16 59.9 X 958
2022-01-20 22:51:31 C 06 47 57.36 +53 16 59.2 X I93
2022-01-20 22:54:37 C 06 47 56.53 +53 16 58.6 X I93
2022-01-20 22:57:32 C 06 47 55.82 +53 16 57.4 X I93
2022-01-20 23:04:52 C 06 47 53.96 +53 16 54.8 X 958
2022-01-20 23:15:18 C 06 47 50.85 +53 16 50.5 q 104
2022-01-20 23:19:06 C 06 47 50.31 +53 16 49.6 X 958
2022-01-20 23:25:53 C 06 47 48.13 +53 16 46.8 q 104
2022-01-20 23:38:34 C 06 47 44.92 +53 16 41.4 q 104
2022-01-21 04:24:52 C 06 46 35.64 +53 14 57.6 q 734
2022-01-21 04:33:16 C 06 46 33.46 +53 14 54.3 q 734
2022-01-21 04:37:40 C 06 46 32.34 +53 14 52.7 q 734
2022-01-21 04:42:03 C 06 46 31.25 +53 14 50.8 q 734
2022-01-21 04:50:38 C 06 46 29.02 +53 14 47.6 q 734
2022-01-21 16:47:17 C 06 43 29.31 +53 09 49.6 X N86
2022-01-21 17:02:55 C 06 43 25.08 +53 09 42.1 X N86
2022-01-21 17:24:26 C 06 43 19.44 +53 09 32.9 X N86
2022-01-21 19:56:40 C 06 42 42.24 +53 08 20.9 V 130
2022-01-21 20:08:09 C 06 42 39.18 +53 08 16.3 V 130
2022-01-21 21:20:08 C 06 42 20.20 +53 07 44.8 V L06
2022-01-21 21:26:05 C 06 42 18.60 +53 07 41.8 V L06
2022-01-21 21:32:02 C 06 42 17.02 +53 07 39.4 V L06
2022-01-23 10:00:21 C 06 32 39.21 +52 47 41.5 V T08
2022-01-23 10:08:18 C 06 32 37.03 +52 47 36.6 V T08
2022-01-23 10:13:37 C 06 32 35.59 +52 47 32.5 V T08
2022-01-23 10:16:18 C 06 32 34.71 +52 47 30.9 V T08
2022-01-23 10:20:58 C 06 32 33.49 +52 47 27.5 V T08
2022-01-23 10:28:56 C 06 32 31.15 +52 47 22.0 V T08
2022-01-23 10:29:36 C 06 32 30.98 +52 47 22.0 V T08
2022-01-23 10:46:13 C 06 32 26.34 +52 47 10.9 V T08
2022-01-23 22:46:59 C 06 29 09.57 +52 38 47.0 X C95
2022-01-23 22:58:35 C 06 29 06.26 +52 38 38.7 X C95
2022-01-23 23:11:08 C 06 29 02.64 +52 38 29.1 X C95
2022-01-23 23:19:57 C 06 29 00.07 +52 38 22.6 X C95
2022-01-24 19:25:58 C 06 23 23.04 +52 22 39.7 Z K19
2022-01-24 19:32:58 C 06 23 20.90 +52 22 33.9 Z K19
2022-01-24 19:39:59 C 06 23 18.74 +52 22 28.5 Z K19
2022-01-25 09:48:09 C 06 19 11.32 +52 10 10.4 V T05