2021 WK1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6137730000
Semi-major axis (a)2.5610612000 AU
Inclination (i)0.46912000°
Long. of Asc. Node (Ω)261.52152000°
Arg. of Perihelion (ω)160.35271000°
Mean Anomaly (M)349.90590000°
Mean Motion (n)0.2404773300°/day
Perihelion dist (q)0.98915100 AU
Aphelion dist (Q)4.13297140 AU
Orbital Period4.09854710 yr
Physical Parameters
H (abs. magnitude)26.27
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.780″
Uncertainty5
Orbit TypeApollo
MOID0.002819 AU
Observations Used65
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-12-13
Observations (68)
Date Type RA Dec Mag Band Observatory
2021-12-02 12:34:08 C 07 18 17.17 +30 21 18.3 U I41
2021-12-02 12:34:39 C 07 18 18.31 +30 21 11.1 U I41
2021-12-03 03:35:24 C 07 49 49.08 +27 19 31.6 X C95
2021-12-03 04:09:44 C 07 50 40.91 +27 13 19.7 X C95
2021-12-03 06:49:59 C 07 55 38.77 +26 46 34.2 V 703
2021-12-03 07:13:37 C 07 56 11.94 +26 42 56.8 V 703
2021-12-05 11:57:10 C 08 41 40.70 +20 57 06.4 o 691
2021-12-05 12:03:17 C 08 41 43.12 +20 56 40.3 o 691
2021-12-05 12:09:25 C 08 41 45.63 +20 56 13.5 o 691
2021-12-06 11:47:26 C 08 51 34.13 +19 31 33.0 o 691
2021-12-06 11:53:26 C 08 51 35.72 +19 31 14.5 o 691
2021-12-06 11:59:26 C 08 51 37.27 +19 30 55.7 o 691
2021-12-13 09:21:49 C 09 16 31.36 +15 31 14.7 u H21
2021-12-13 09:30:57 C 09 16 31.60 +15 31 08.6 u H21
2021-12-13 09:39:32 C 09 16 31.83 +15 31 03.1 u H21
2021-12-13 12:37:36 C 09 16 39.04 +15 29 24.9 V 291
2021-12-13 12:42:59 C 09 16 39.14 +15 29 21.1 V 291
2021-12-13 12:48:22 C 09 16 39.28 +15 29 17.6 V 291