IAA RAS IAA Minor Planet Database

2021 WB2

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5655751932 ± 2.54e-07
Semi-major axis (a)1.5826943650 AU ± 4.21e-09
Inclination (i)4.63410358° ± 1.72e-05
Long. of Asc. Node (Ω)255.43212585° ± 3.54e-05
Arg. of Perihelion (ω)80.41715149° ± 5.79e-05
Mean Anomaly (M)26.89791761° ± 6.46e-06
Mean Motion (n)0.4950130998°/day ± 1.97e-09
Perihelion dist (q)0.68756169 AU ± 4.01e-07
Aphelion dist (Q)2.47782704 AU ± 4.01e-07
Orbital Period1.99111152 yr ± 7.94e-09
Physical Parameters
H (abs. magnitude)24.60
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.226″
Uncertainty0
Orbit TypeApollo
MOID0.004915 AU
Observations Used49
Oppositions2
Arc Total2021-2025
First Observation Used2021-11-27
Last Observation Used2025-12-10
Observations (50)
Date Type RA Dec Mag Band Observatory
2021-11-27 04:14:52 C 01 41 22.31 +27 02 24.7 – V 703
2021-11-27 04:22:39 C 01 41 28.86 +27 02 00.2 – V 703
2021-11-27 04:38:53 C 01 41 42.15 +27 01 09.6 – V 703
2021-11-28 02:32:33 C 01 58 39.79 +25 55 11.3 – V G96
2021-11-28 02:40:36 C 01 58 45.11 +25 54 49.4 – V G96
2021-11-28 02:48:39 C 01 58 50.44 +25 54 27.0 – V G96
2021-11-28 02:56:41 C 01 58 55.71 +25 54 04.9 – V G96
2021-11-28 03:35:59 C 01 59 19.65 +25 52 05.8 – V 734
2021-11-28 03:56:13 C 01 59 32.84 +25 51 07.4 – V 734
2021-11-28 04:20:44 C 01 59 48.77 +25 49 59.4 – V 734
2021-11-28 04:41:12 C 02 00 02.06 +25 49 00.8 – V 734
2021-11-28 22:19:43 C 02 10 56.44 +25 01 20.5 – V 204
2021-11-28 22:45:14 C 02 11 10.36 +25 00 13.8 – V 204
2021-11-28 22:56:28 C 02 11 17.21 +24 59 49.0 – V I93
2021-11-28 23:01:30 C 02 11 19.95 +24 59 35.4 – V I93
2021-11-28 23:06:24 C 02 11 22.59 +24 59 22.8 – V I93
2021-11-28 23:06:30 C 02 11 21.96 +24 59 09.9 – V 033
2021-11-28 23:07:35 C 02 11 22.59 +24 59 06.7 – V 033
2021-11-28 23:08:41 C 02 11 23.19 +24 59 04.1 – V 033
2021-11-29 02:03:52 C 02 13 07.27 +24 52 04.4 – X 858
2021-11-29 02:08:12 C 02 13 07.76 +24 51 52.2 – u H21
2021-11-29 02:16:09 C 02 13 11.93 +24 51 32.9 – u H21
2021-11-29 02:21:16 C 02 13 14.61 +24 51 20.2 – u H21
2021-11-29 02:44:59 C 02 13 28.89 +24 50 25.4 – X 858
2021-11-29 02:54:04 C 02 13 33.59 +24 50 02.8 – X 858
2021-12-01 03:54:52 C 02 35 17.33 +23 04 02.1 – V I52
2021-12-01 03:57:53 C 02 35 18.36 +23 03 56.7 – V I52
2021-12-01 04:00:04 C 02 35 19.09 +23 03 51.9 – V I52
2021-12-01 04:00:41 C 02 35 19.31 +23 03 51.2 – V I52
2021-12-08 08:49:24 C 03 12 55.13 +19 37 48.2 – o 291
2021-12-08 09:00:11 C 03 12 56.48 +19 37 40.0 – o 291
2021-12-08 09:10:58 C 03 12 57.86 +19 37 31.0 – o 291
2021-12-09 03:34:37 C 03 15 22.51 +19 24 38.9 – u H21
2021-12-09 04:12:47 C 03 15 26.82 +19 24 13.2 – u H21
2021-12-09 04:35:07 C 03 15 29.33 +19 23 58.5 – u H21
2023-11-22 06:03:30 C 05 17 27.61 +57 31 43.2 – V 703
2023-11-22 06:12:01 C 05 17 15.14 +57 28 36.1 – V 703
2023-12-03 06:53:33 C 04 12 32.782 +24 55 10.85 – V G96
2023-12-03 07:00:58 C 04 12 32.386 +24 54 55.58 – V G96
2023-12-03 07:15:47 C 04 12 31.547 +24 54 24.77 – V G96
2023-12-03 09:51:54 C 04 12 22.932 +24 48 57.06 – V I52
2023-12-03 09:54:02 C 04 12 22.813 +24 48 52.85 – V I52
2023-12-03 09:56:10 C 04 12 22.759 +24 48 48.10 – V I52
2023-12-03 09:58:18 C 04 12 22.633 +24 48 43.74 – V I52
2025-12-09 08:56:33 C 05 04 44.130 +22 04 52.70 – V 691
2025-12-09 09:19:20 C 05 04 41.180 +22 04 32.50 – V 691
2025-12-09 09:42:08 C 05 04 38.230 +22 04 12.50 – V 691
2025-12-10 11:26:03 C 05 01 39.280 +21 43 01.60 – V 691
2025-12-10 11:41:39 C 05 01 37.590 +21 42 49.00 – V 691
2025-12-10 11:57:14 C 05 01 35.750 +21 42 35.60 – V 691