2021 WA4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2808479390 ± 8.03e-04
Semi-major axis (a)1.5048929628 AU ± 1.95e-03
Inclination (i)15.36797075° ± 3.11e-02
Long. of Asc. Node (Ω)56.79631550° ± 2.72e-03
Arg. of Perihelion (ω)330.26389409° ± 1.50e-03
Mean Anomaly (M)78.04651822° ± 1.55e+00
Mean Motion (n)0.5338925481°/day ± 1.04e-03
Perihelion dist (q)1.08224688 AU ± 1.85e-03
Aphelion dist (Q)1.92753905 AU ± 2.77e-03
Orbital Period1.84611358 yr ± 3.59e-03
Physical Parameters
H (abs. magnitude)25.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.208″
Uncertainty4
Orbit TypeAmor
MOID0.114799 AU
Observations Used19
Oppositions1
Arc Total2021-2021
First Observation Used2021-11-14
Last Observation Used2021-11-30
Observations (20)
Date Type RA Dec Mag Band Observatory
2021-11-14 08:46:49 C 04 31 12.21 +14 07 22.2 V G96
2021-11-14 08:54:55 C 04 31 11.57 +14 08 07.9 V G96
2021-11-14 09:03:01 C 04 31 10.89 +14 08 53.9 V G96
2021-11-28 06:50:11 C 04 04 01.71 +39 32 38.3 V V00
2021-11-28 06:57:12 C 04 04 00.99 +39 33 00.6 V V00
2021-11-28 07:11:11 C 04 03 59.61 +39 33 45.9 V V00
2021-11-28 10:07:11 C 04 03 42.49 +39 43 00.7 o 291
2021-11-28 10:13:44 C 04 03 41.81 +39 43 20.9 V V00
2021-11-28 10:15:01 C 04 03 41.72 +39 43 24.9 V V00
2021-11-28 10:16:17 C 04 03 41.58 +39 43 28.9 V V00
2021-11-28 10:17:34 C 04 03 41.47 +39 43 32.8 V V00
2021-11-28 10:25:50 C 04 03 40.73 +39 43 57.9 o 291
2021-11-29 08:18:30 C 04 01 55.96 +40 52 01.0 V V00
2021-11-29 08:19:57 C 04 01 55.83 +40 52 05.1 V V00
2021-11-29 08:21:24 C 04 01 55.67 +40 52 09.6 V V00
2021-11-29 08:22:50 C 04 01 55.52 +40 52 14.0 V V00
2021-11-30 06:40:22 C 04 00 10.73 +41 57 35.5 V V00
2021-11-30 06:42:08 C 04 00 10.54 +41 57 41.6 V V00
2021-11-30 06:43:55 C 04 00 10.37 +41 57 46.4 V V00
2021-11-30 06:45:41 C 04 00 10.20 +41 57 51.9 V V00