IAA RAS IAA Minor Planet Database

2021 WD

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6564199678 ± 4.69e-05
Semi-major axis (a)2.3969092085 AU ± 3.02e-04
Inclination (i)9.09446747° ± 7.74e-04
Long. of Asc. Node (Ω)311.07440610° ± 2.02e-03
Arg. of Perihelion (ω)47.56295259° ± 1.67e-03
Mean Anomaly (M)40.32802427° ± 7.68e-02
Mean Motion (n)0.2656041768°/day ± 5.02e-05
Perihelion dist (q)0.82353014 AU ± 1.53e-04
Aphelion dist (Q)3.97028827 AU ± 5.13e-04
Orbital Period3.71088397 yr ± 7.02e-04
Physical Parameters
H (abs. magnitude)21.30
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.246″
Uncertainty2
Orbit TypeApollo
MOID0.029030 AU
Observations Used65
Oppositions1
Arc Total2021-2022
First Observation Used2021-11-21
Last Observation Used2022-01-03
Observations (65)
Date Type RA Dec Mag Band Observatory
2021-12-12 05:13:01 C 06 02 44.50 +52 12 09.0 – V I52
2021-12-12 05:15:31 C 06 02 44.14 +52 12 03.6 – V I52
2021-12-12 05:17:47 C 06 02 43.75 +52 11 59.3 – V I52
2021-12-12 05:21:59 C 06 02 43.11 +52 11 50.5 – V I52
2021-12-12 09:57:47 C 06 01 59.66 +52 02 07.9 – V G96
2021-12-12 10:06:11 C 06 01 58.33 +52 01 49.8 – V G96
2021-12-12 10:14:36 C 06 01 57.05 +52 01 32.0 – V G96
2021-12-12 10:23:01 C 06 01 55.76 +52 01 13.6 – V G96
2021-12-18 04:35:23 C 05 45 38.27 +47 29 34.8 – V 695
2021-12-18 04:44:12 C 05 45 37.39 +47 29 19.1 – V 695
2021-12-18 04:53:02 C 05 45 36.47 +47 29 03.5 – V 695
2022-01-03 08:22:19 C 05 25 10.41 +38 10 25.7 – V V06
2022-01-03 08:26:24 C 05 25 10.25 +38 10 21.3 – V V06
2022-01-03 08:29:50 C 05 25 10.18 +38 10 18.2 – V V06
2022-01-03 08:32:01 C 05 25 10.14 +38 10 15.5 – V V06