2021 WE4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3680339000
Semi-major axis (a)1.4086447000 AU ± 3.00e+00
Inclination (i)4.07731000° ± 4.00e+00
Long. of Asc. Node (Ω)57.86834000° ± 5.00e+00
Arg. of Perihelion (ω)310.28776000° ± 6.00e+00
Mean Anomaly (M)164.16141000°
Mean Motion (n)0.5895245100°/day
Perihelion dist (q)0.89021570 AU
Aphelion dist (Q)1.92707370 AU
Orbital Period1.67186880 yr
Physical Parameters
H (abs. magnitude)28.19
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.930″
Uncertainty7
Orbit TypeApollo
MOID0.001549 AU
Observations Used12
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-11-30
Observations (12)
Date Type RA Dec Mag Band Observatory
2021-11-28 06:50:58 C 04 00 34.45 +38 54 10.7 V V00
2021-11-28 06:57:58 C 04 00 36.91 +38 54 10.7 V V00
2021-11-28 07:04:58 C 04 00 39.41 +38 54 10.4 V V00
2021-11-28 07:11:58 C 04 00 41.85 +38 54 10.4 V V00
2021-11-28 09:22:18 C 04 01 27.66 +38 53 39.5 V I52
2021-11-28 09:26:19 C 04 01 29.09 +38 53 37.6 V I52
2021-11-28 09:30:20 C 04 01 30.53 +38 53 36.3 V I52
2021-11-29 03:56:21 C 04 08 45.89 +38 52 06.6 u H21
2021-11-29 04:10:05 C 04 08 49.72 +38 52 07.3 u H21
2021-11-29 04:17:16 C 04 08 51.70 +38 52 07.2 u H21
2021-11-30 03:49:22 C 04 15 55.68 +38 48 27.9 o 291
2021-11-30 04:15:24 C 04 16 01.24 +38 48 32.3 o 291