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
2022-02-13 19:08:04 C 03 34 42.54 +24 17 28.4 V K87
2022-02-13 19:16:11 C 03 34 39.36 +24 16 28.6 V K87
2022-02-13 19:24:18 C 03 34 36.19 +24 15 27.9 V K87
2022-02-13 19:31:59 C 03 34 32.52 +24 14 28.7 V L18
2022-02-13 19:35:59 C 03 34 31.02 +24 13 59.4 V L18
2022-02-13 19:39:59 C 03 34 29.49 +24 13 29.4 V L18
2022-02-14 05:09:47 C 03 30 54.52 +23 02 46.0 V 703
2022-02-14 05:17:27 C 03 30 51.59 +23 01 46.8 V 703
2022-02-14 05:25:07 C 03 30 48.52 +23 00 48.4 V 703
2022-02-14 05:32:47 C 03 30 45.64 +22 59 50.5 V 703
2022-02-14 05:36:31 C 03 30 46.282 +22 59 45.15 U F52
2022-02-14 05:54:52 C 03 30 39.067 +22 57 25.66 U F52
2022-02-14 06:13:18 C 03 30 31.846 +22 55 05.39 U F52
2022-02-14 06:31:42 C 03 30 24.627 +22 52 44.88 U F52
2022-02-14 19:41:58 C 03 25 28.03 +21 10 59.0 V L18
2022-02-14 19:45:58 C 03 25 26.57 +21 10 27.2 V L18
2022-02-14 19:49:58 C 03 25 25.03 +21 09 56.2 V L18
2022-02-19 03:22:09 C 02 47 00.64 +06 38 49.6 V U52
2022-02-19 03:24:28 C 02 46 59.50 +06 38 30.8 V U52
2022-02-19 03:26:47 C 02 46 58.67 +06 38 10.1 V U52
2022-02-19 03:36:16 C 02 46 55.16 +06 36 44.3 V U52
2022-02-19 03:38:35 C 02 46 54.20 +06 36 25.3 V U52
2022-02-19 03:40:54 C 02 46 53.31 +06 36 04.9 V U52
2022-02-20 02:20:23 C 02 38 36.81 +03 16 56.1 o 691
2022-02-20 02:26:07 C 02 38 34.62 +03 16 05.7 o 691
2022-02-20 02:31:50 C 02 38 32.44 +03 15 15.4 o 691
2022-07-05 13:46:17 C 22 42 37.269 -17 08 22.05 U F52
2022-07-05 13:57:18 C 22 42 36.400 -17 08 20.75 U F52
2022-07-05 14:08:20 C 22 42 35.517 -17 08 19.20 U F52
2022-07-25 10:24:35 C 21 59 49.330 -16 21 58.22 U F52
2022-07-25 10:41:11 C 21 59 47.674 -16 21 57.07 U F52
2022-07-25 10:57:49 C 21 59 46.013 -16 21 55.85 U F52
2022-07-25 11:14:26 C 21 59 44.356 -16 21 54.58 U F52
2022-07-26 10:38:45 C 21 57 28.028 -16 20 06.05 U F52
2022-07-26 10:54:20 C 21 57 26.466 -16 20 05.32 U F52
2022-07-26 11:10:04 C 21 57 24.901 -16 20 04.08 U F52