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
2022-02-07 07:12:09 C 04 33 24.64 +39 40 50.4 V T05
2022-02-07 13:10:46 S 04 31 11.916 +39 13 28.67 L C51
2022-02-07 16:18:43 S 04 30 01.529 +38 59 03.48 L C51
2022-02-07 21:00:55 S 04 28 15.749 +38 37 02.78 L C51
2022-02-08 07:21:31 C 04 24 21.25 +37 47 34.0 V T05
2022-02-08 07:26:08 C 04 24 19.41 +37 47 10.9 V T05
2022-02-08 07:36:02 C 04 24 15.55 +37 46 21.8 V T05
2022-02-08 07:54:03 C 04 24 08.52 +37 44 52.2 V T05
2022-02-09 03:24:11 C 04 16 48.88 +36 05 22.7 q H45
2022-02-09 03:25:25 C 04 16 48.42 +36 05 15.1 q H45
2022-02-09 03:26:24 C 04 16 48.07 +36 05 09.7 q H45
2022-02-09 03:29:25 C 04 16 46.87 +36 04 53.7 q H45
2022-02-09 03:33:18 C 04 16 45.41 +36 04 32.9 q H45
2022-02-09 03:34:33 C 04 16 44.93 +36 04 26.3 q H45
2022-02-09 07:25:05 C 04 15 18.08 +35 44 16.8 V T05
2022-02-09 07:29:42 C 04 15 16.27 +35 43 52.0 V T05
2022-02-09 07:39:37 C 04 15 12.36 +35 42 58.0 V T05
2022-02-09 08:09:25 C 04 15 00.74 +35 40 16.5 V T05
2022-02-10 02:13:15 C 04 08 13.92 +34 00 13.9 q H45
2022-02-10 02:15:26 C 04 08 12.96 +34 00 01.4 q H45
2022-02-10 02:16:47 C 04 08 12.45 +33 59 53.5 q H45
2022-02-10 02:18:12 C 04 08 11.93 +33 59 45.6 q H45
2022-02-10 21:17:44 C 04 01 01.49 +32 07 39.7 V Z80
2022-02-10 21:25:01 C 04 00 58.66 +32 06 55.5 V Z80
2022-02-10 21:32:19 C 04 00 55.85 +32 06 10.5 V Z80
2022-02-11 08:52:53 C 03 56 37.29 +30 56 25.5 V T05
2022-02-11 09:16:32 C 03 56 28.20 +30 53 54.6 V T05
2022-02-11 09:57:15 C 03 56 12.50 +30 49 33.0 V T05
2022-02-11 10:01:18 C 03 56 11.02 +30 49 07.4 V T05
2022-02-11 18:56:29 C 03 52 52.38 +29 51 48.0 V G01
2022-02-11 18:57:50 C 03 52 52.12 +29 51 39.4 V G01
2022-02-11 18:58:30 C 03 52 51.69 +29 51 36.8 V G01
2022-02-11 18:59:11 C 03 52 51.36 +29 51 34.0 V G01
2022-02-12 06:26:26 C 03 48 31.14 +28 36 31.6 V T05
2022-02-12 06:31:03 C 03 48 29.34 +28 36 00.8 V T05
2022-02-12 06:41:14 C 03 48 25.29 +28 34 51.2 V T05
2022-02-12 06:58:28 C 03 48 18.47 +28 32 54.5 V T05
2022-02-12 17:57:25 C 03 44 12.25 +27 17 33.8 V G01
2022-02-12 18:56:59 C 03 43 49.46 +27 10 41.5 V G01
2022-02-12 19:57:37 C 03 43 25.46 +27 03 38.0 V K87
2022-02-12 20:01:51 C 03 43 23.80 +27 03 09.1 V K87
2022-02-12 20:06:06 C 03 43 22.20 +27 02 39.1 V K87
2022-02-13 04:54:38 C 03 40 01.94 +26 00 49.9 V G96
2022-02-13 05:01:25 C 03 39 59.31 +26 00 01.1 V G96
2022-02-13 05:08:12 C 03 39 56.69 +25 59 12.3 V G96
2022-02-13 05:14:59 C 03 39 54.05 +25 58 23.3 V G96
2022-02-13 06:20:48 C 03 39 30.47 +25 50 54.3 V T08
2022-02-13 06:24:48 C 03 39 28.93 +25 50 25.7 V T08
2022-02-13 06:43:49 C 03 39 21.45 +25 48 07.5 V T08
2022-02-13 06:58:28 C 03 39 15.69 +25 46 22.7 V T08