2021 WZ4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5956186498 ± 2.33e-04
Semi-major axis (a)1.9398664216 AU ± 9.74e-04
Inclination (i)0.90967771° ± 3.42e-04
Long. of Asc. Node (Ω)71.40255391° ± 3.35e-04
Arg. of Perihelion (ω)72.89606291° ± 1.51e-03
Mean Anomaly (M)149.67926830° ± 3.81e-01
Mean Motion (n)0.3647997548°/day ± 2.75e-04
Perihelion dist (q)0.78444580 AU ± 5.99e-04
Aphelion dist (Q)3.09528704 AU ± 1.62e-03
Orbital Period2.70182825 yr ± 2.03e-03
Physical Parameters
H (abs. magnitude)24.76
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.274″
Uncertainty3
Orbit TypeApollo
MOID0.002708 AU
Observations Used94
Oppositions1
Arc Total2021-2021
First Observation Used2021-11-29
Last Observation Used2021-12-13
Observations (97)
Date Type RA Dec Mag Band Observatory
2021-12-05 19:15:29 C 03 38 42.16 +19 43 21.0 V 033
2021-12-05 19:16:39 C 03 38 41.93 +19 43 21.2 V 033
2021-12-05 19:17:49 C 03 38 41.66 +19 43 20.2 V 033
2021-12-05 19:26:38 C 03 38 39.66 +19 43 20.8 V 033
2021-12-05 19:27:48 C 03 38 39.40 +19 43 21.1 V 033
2021-12-05 19:28:58 C 03 38 39.15 +19 43 20.8 V 033
2021-12-07 19:12:44 C 03 26 01.86 +19 39 39.9 V 033
2021-12-07 19:13:09 C 03 26 01.71 +19 39 39.9 V 033
2021-12-07 19:13:34 C 03 26 01.56 +19 39 40.2 V 033
2021-12-07 19:14:06 C 03 26 01.37 +19 39 39.9 V 033
2021-12-08 05:15:41 C 03 22 24.13 +19 39 03.1 V 703
2021-12-08 05:23:51 C 03 22 20.60 +19 39 00.9 V 703
2021-12-08 05:32:02 C 03 22 17.09 +19 39 00.5 V 703
2021-12-08 05:40:12 C 03 22 13.70 +19 38 59.5 V 703
2021-12-08 06:39:58 C 03 21 48.30 +19 38 46.9 V I52
2021-12-08 06:40:13 C 03 21 48.21 +19 38 46.8 V I52
2021-12-08 06:49:28 C 03 21 44.24 +19 38 44.6 V I52
2021-12-08 07:00:13 C 03 21 39.66 +19 38 41.6 V I52
2021-12-09 05:18:02 C 03 11 46.98 +19 33 16.7 V G96
2021-12-09 05:26:08 C 03 11 42.37 +19 33 14.0 V G96
2021-12-09 05:42:23 C 03 11 33.13 +19 33 08.2 V G96
2021-12-11 17:54:14 C 02 18 27.58 +18 29 01.4 X 595
2021-12-11 17:59:59 C 02 18 18.66 +18 28 47.9 X 595
2021-12-11 18:05:36 C 02 18 09.93 +18 28 33.8 X 595
2021-12-11 18:50:47 C 02 17 00.11 +18 26 45.2 V G15
2021-12-11 18:57:19 C 02 16 49.71 +18 26 29.6 V G15
2021-12-11 19:03:38 C 02 16 39.68 +18 26 12.0 V G15
2021-12-11 22:23:00 C 02 11 08.51 +18 16 36.4 V K83
2021-12-11 22:28:09 C 02 10 59.71 +18 16 20.1 V K83
2021-12-11 22:33:17 C 02 10 50.89 +18 16 02.9 V K83
2021-12-12 01:59:02 C 02 05 11.81 +18 05 23.2 u H21
2021-12-12 02:01:49 C 02 05 06.61 +18 05 13.6 u H21
2021-12-12 02:04:36 C 02 05 01.41 +18 05 03.9 u H21
2021-12-12 02:07:22 C 02 04 56.20 +18 04 54.1 u H21
2021-12-12 02:07:53 C 02 05 03.63 +18 05 23.4 V I52
2021-12-12 02:10:09 C 02 04 50.98 +18 04 44.3 u H21
2021-12-12 02:10:48 C 02 04 58.16 +18 05 13.8 V I52
2021-12-12 02:14:27 C 02 04 51.31 +18 05 01.4 V I52
2021-12-12 02:14:41 C 02 04 50.87 +18 05 00.6 V I52
2021-12-13 01:11:37 C 01 09 47.70 +15 45 24.8 u H21
2021-12-13 01:13:08 C 01 09 42.70 +15 45 10.1 u H21
2021-12-13 01:14:40 C 01 09 37.75 +15 44 55.7 u H21
2021-12-13 01:16:12 C 01 09 32.75 +15 44 41.0 u H21
2021-12-13 02:14:26 C 01 06 31.67 +15 36 03.6 V I52
2021-12-13 02:14:40 C 01 06 30.88 +15 36 01.3 V I52
2021-12-13 02:14:54 C 01 06 30.10 +15 35 58.8 V I52
2021-12-13 02:15:09 C 01 06 29.31 +15 35 56.5 V I52