2021 WB4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2618427969 ± 7.01e-04
Semi-major axis (a)1.3868813727 AU ± 1.45e-03
Inclination (i)27.12341909° ± 3.65e-02
Long. of Asc. Node (Ω)250.21082438° ± 4.60e-03
Arg. of Perihelion (ω)144.76517061° ± 3.46e-02
Mean Anomaly (M)178.31168988° ± 1.44e+00
Mean Motion (n)0.6034666905°/day ± 9.43e-04
Perihelion dist (q)1.02373648 AU ± 1.44e-03
Aphelion dist (Q)1.75002627 AU ± 2.07e-03
Orbital Period1.63327371 yr ± 2.55e-03
Physical Parameters
H (abs. magnitude)23.69
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.740″
Uncertainty4
Orbit TypeAmor
MOID0.074296 AU
Observations Used30
Oppositions1
Arc Total2021-2021
First Observation Used2021-11-28
Last Observation Used2021-12-10
Observations (31)
Date Type RA Dec Mag Band Observatory
2021-11-28 11:33:54 C 07 15 00.11 +26 38 39.9 V G96
2021-11-28 11:41:20 C 07 14 57.61 +26 37 07.8 V G96
2021-11-28 11:42:00 C 07 14 57.45 +26 37 01.0 V G96
2021-11-28 11:50:43 C 07 14 54.53 +26 35 13.5 V G96
2021-11-28 11:58:09 C 07 14 52.11 +26 33 42.9 V G96
2021-11-29 11:28:32 C 07 07 49.76 +21 45 45.0 V G96
2021-11-29 11:36:53 C 07 07 47.20 +21 44 03.1 V G96
2021-11-29 11:44:27 C 07 07 44.91 +21 42 32.6 V G96
2021-11-29 12:45:34 C 07 07 25.91 +21 29 59.4 V I52
2021-11-29 12:45:55 C 07 07 25.82 +21 29 55.3 V I52
2021-11-29 12:46:17 C 07 07 25.73 +21 29 51.2 V I52
2021-11-29 12:46:38 C 07 07 25.63 +21 29 46.6 V I52
2021-11-30 06:46:04 C 07 02 29.42 +17 51 35.2 V I52
2021-11-30 06:46:53 C 07 02 29.22 +17 51 25.2 V I52
2021-11-30 06:47:42 C 07 02 28.96 +17 51 15.5 V I52
2021-11-30 06:48:31 C 07 02 28.75 +17 51 05.6 V I52
2021-12-01 08:47:22 C 06 55 33.47 +12 44 01.9 V I52
2021-12-01 08:47:43 C 06 55 33.39 +12 43 58.0 V I52
2021-12-01 08:48:03 C 06 55 33.28 +12 43 54.4 V I52
2021-12-01 08:48:23 C 06 55 33.21 +12 43 50.6 V I52
2021-12-03 05:09:53 C 06 44 54.06 +04 35 50.8 u 807
2021-12-03 05:15:35 C 06 44 52.67 +04 34 51.4 u 807
2021-12-03 05:21:15 C 06 44 51.23 +04 33 52.4 u 807
2021-12-03 10:46:49 C 06 43 34.69 +03 36 18.6 V I52
2021-12-03 10:51:07 C 06 43 33.80 +03 35 31.8 V I52
2021-12-05 04:31:16 C 06 34 49.81 -03 02 51.4 u 807
2021-12-05 04:40:16 C 06 34 47.85 -03 04 11.6 u 807
2021-12-05 04:49:15 C 06 34 45.90 -03 05 32.0 u 807
2021-12-10 04:30:33 C 06 14 09.73 -17 15 28.0 u 807
2021-12-10 04:39:34 C 06 14 08.24 -17 16 17.4 u 807
2021-12-10 04:48:38 C 06 14 06.75 -17 17 06.9 u 807