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
2021-11-21 12:21:37 C 09 29 57.042 +70 15 46.76 U F51
2021-11-21 12:38:21 C 09 29 41.483 +70 15 33.14 U F51
2021-11-21 12:55:06 C 09 29 25.697 +70 15 19.30 U F51
2021-11-21 13:11:52 C 09 29 10.069 +70 15 05.28 U F51
2021-11-21 15:17:18 C 09 27 11.843 +70 13 11.45 V F51
2021-11-21 15:18:13 C 09 27 11.000 +70 13 10.65 V F51
2021-11-21 19:39:46 C 09 23 17.15 +70 07 36.9 V J95
2021-11-21 19:53:24 C 09 23 05.26 +70 07 22.9 V J95
2021-11-21 20:16:05 C 09 22 45.49 +70 07 00.7 V J95
2021-11-22 08:20:57 C 09 12 09.17 +69 53 48.4 u H21
2021-11-22 08:29:00 C 09 12 02.04 +69 53 39.2 u H21
2021-11-22 08:37:12 C 09 11 54.80 +69 53 30.0 u H21
2021-11-22 08:41:54 C 09 11 50.63 +69 53 24.3 u H21
2021-11-22 15:12:54 C 09 06 14.024 +69 45 15.86 V F51
2021-11-22 15:14:05 C 09 06 12.981 +69 45 14.12 V F51
2021-11-23 00:29:43 C 08 58 35.46 +69 31 54.5 U L01
2021-11-23 00:33:08 C 08 58 32.64 +69 31 49.7 U L01
2021-11-23 00:53:00 C 08 58 16.01 +69 31 23.3 U L01
2021-11-23 00:57:59 C 08 58 11.86 +69 31 16.2 U L01
2021-11-23 01:03:00 C 08 58 07.53 +69 31 09.1 U L01
2021-11-23 01:08:03 C 08 58 03.36 +69 31 02.3 U L01
2021-11-23 01:13:02 C 08 57 59.36 +69 30 55.5 U L01
2021-11-23 20:05:27 C 08 43 06.11 +69 00 46.1 V K51
2021-11-23 20:08:12 C 08 43 04.01 +69 00 41.6 V K51
2021-11-23 20:10:58 C 08 43 01.86 +69 00 37.7 V K51
2021-11-28 11:31:02 C 07 34 10.40 +65 09 28.6 V I52
2021-11-28 11:33:28 C 07 34 09.19 +65 09 22.5 V I52
2021-11-28 11:36:33 C 07 34 07.61 +65 09 15.9 V I52
2021-11-28 11:38:10 C 07 34 06.69 +65 09 11.7 V I52
2021-11-30 10:44:54 C 07 13 13.67 +63 15 57.9 V V00
2021-11-30 10:52:02 C 07 13 10.68 +63 15 40.3 V V00
2021-11-30 10:59:10 C 07 13 07.67 +63 15 22.8 V V00
2021-11-30 11:06:17 C 07 13 04.66 +63 15 05.2 V V00
2021-12-01 09:43:28 C 07 04 24.05 +62 19 40.4 V I52
2021-12-01 09:56:20 C 07 04 19.11 +62 19 08.1 V I52
2021-12-01 10:14:35 C 07 04 12.12 +62 18 23.3 V I52
2021-12-02 06:59:34 C 06 56 56.26 +61 27 14.4 V I52
2021-12-02 07:02:42 C 06 56 55.10 +61 27 07.5 V I52
2021-12-02 07:04:31 C 06 56 54.54 +61 27 02.8 V I52
2021-12-02 07:06:20 C 06 56 53.91 +61 26 58.7 V I52
2021-12-03 10:56:02 C 06 47 53.58 +60 18 37.7 V I52
2021-12-03 11:00:34 C 06 47 52.17 +60 18 26.6 V I52
2021-12-03 11:05:05 C 06 47 50.69 +60 18 15.2 V I52
2021-12-03 11:09:42 C 06 47 49.24 +60 18 03.4 V I52
2021-12-05 07:02:09 C 06 35 33.06 +58 31 13.1 V I52
2021-12-05 07:05:42 C 06 35 32.11 +58 31 04.5 V I52
2021-12-05 07:07:33 C 06 35 31.58 +58 31 00.3 V I52
2021-12-05 07:10:21 C 06 35 30.81 +58 30 53.5 V I52
2021-12-08 08:41:37 C 06 18 42.07 +55 37 16.4 V I52
2021-12-08 08:47:11 C 06 18 40.88 +55 37 03.3 V I52