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
2000-11-26 09:41:41 C 08 31 42.62 +45 02 18.0 645
2000-11-26 09:42:52 C 08 31 42.68 +45 02 18.4 645
2000-11-26 09:46:27 C 08 31 42.91 +45 02 19.5 645
2000-11-27 07:44:59 C 08 33 00.11 +45 08 13.6 645
2000-11-27 07:46:11 C 08 33 00.17 +45 08 14.2 645
2000-11-27 07:48:34 C 08 33 00.31 +45 08 15.2 645
2000-11-27 07:49:46 C 08 33 00.37 +45 08 15.3 645
2017-10-30 14:55:56 C 10 41 29.465 +16 10 20.34 V F51
2017-10-30 15:03:24 C 10 41 30.602 +16 10 10.22 V F51
2017-10-30 15:10:51 C 10 41 31.784 +16 09 59.96 V F51
2021-11-28 10:54:42 C 08 07 36.56 +45 43 22.4 V V00
2021-11-28 11:01:54 C 08 07 36.75 +45 43 24.7 V V00
2021-11-28 11:09:06 C 08 07 36.94 +45 43 27.2 V V00
2021-11-28 11:16:17 C 08 07 37.16 +45 43 29.5 V V00
2021-11-28 12:58:21 C 08 07 40.675 +45 44 05.70 V F52
2021-11-28 13:33:19 C 08 07 41.695 +45 44 17.74 V F52
2021-11-28 13:50:41 C 08 07 42.169 +45 44 23.58 V F52
2021-12-12 12:18:19 C 08 14 10.59 +47 54 00.9 V G96
2021-12-12 12:26:39 C 08 14 10.60 +47 54 04.7 V G96
2021-12-12 12:35:00 C 08 14 10.67 +47 54 08.3 V G96
2021-12-12 12:43:20 C 08 14 10.63 +47 54 11.8 V G96
2022-01-03 06:03:14 C 07 56 06.12 +52 02 08.6 V 703
2022-01-03 06:11:02 C 07 56 05.27 +52 02 12.0 V 703
2022-01-07 06:03:03 C 07 46 17.85 +52 42 56.3 V 703
2022-01-07 06:18:38 C 07 46 15.76 +52 43 03.9 V 703
2022-01-10 05:09:57 C 07 37 10.44 +53 07 50.8 V 703
2022-01-20 07:30:05 C 06 51 39.43 +53 22 07.7 V G96
2022-01-20 07:37:39 C 06 51 37.61 +53 22 04.6 V G96
2022-01-20 07:45:11 C 06 51 35.79 +53 22 02.0 V G96
2022-01-20 07:52:42 C 06 51 33.86 +53 21 59.6 V G96
2022-01-20 08:45:05 C 06 51 20.49 +53 21 35.8 q H36
2022-01-20 08:58:39 C 06 51 17.45 +53 21 36.8 V G96
2022-01-20 08:59:39 C 06 51 16.87 +53 21 30.9 q H36
2022-01-20 09:02:16 C 06 51 16.53 +53 21 35.6 V G96
2022-01-20 09:06:09 C 06 51 15.60 +53 21 34.3 V G96
2022-01-20 09:19:40 C 06 51 11.91 +53 21 23.8 q H36
2022-01-20 09:28:57 C 06 51 09.66 +53 21 19.9 q H36
2022-01-20 18:01:58 C 06 49 10.01 +53 18 27.0 V J95
2022-01-20 18:04:16 C 06 49 09.44 +53 18 27.0 V J95
2022-01-20 18:06:33 C 06 49 08.83 +53 18 26.0 V J95
2022-01-20 18:08:51 C 06 49 08.33 +53 18 25.3 V J95
2022-01-20 18:17:43 C 06 49 06.05 +53 18 22.7 V Z99
2022-01-20 18:20:28 C 06 49 05.31 +53 18 21.9 V Z99
2022-01-20 18:23:13 C 06 49 04.66 +53 18 21.2 V Z99
2022-01-20 18:45:48 C 06 48 59.22 +53 18 19.2 V 204
2022-01-20 18:52:47 C 06 48 57.65 +53 18 17.9 V B49
2022-01-20 18:56:35 C 06 48 56.76 +53 18 16.7 V B49
2022-01-20 18:56:38 C 06 48 56.47 +53 18 16.2 V 204
2022-01-20 18:57:08 C 06 48 56.66 +53 18 16.5 V B49
2022-01-20 18:58:37 C 06 48 56.07 +53 18 15.5 X G15