2021 CW4

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5402743871 ± 5.66e-08
Semi-major axis (a)1.7566191651 AU ± 1.45e-07
Inclination (i)6.93897729° ± 3.71e-06
Long. of Asc. Node (Ω)204.77483514° ± 4.43e-05
Arg. of Perihelion (ω)225.10227850° ± 4.47e-05
Mean Anomaly (M)37.12863675° ± 7.15e-05
Mean Motion (n)0.4233463806°/day ± 5.23e-08
Perihelion dist (q)0.80756282 AU ± 1.20e-07
Aphelion dist (Q)2.70567551 AU ± 2.44e-07
Orbital Period2.32817931 yr ± 2.88e-07
Physical Parameters
H (abs. magnitude)19.65
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.262″
Uncertainty0
Orbit TypeApollo
MOID0.036602 AU
Observations Used231
Oppositions2
Arc Total2017-2021
First Observation Used2017-05-21
Last Observation Used2021-04-15
Observations (245)
Date Type RA Dec Mag Band Observatory
2021-02-16 07:35:46 C 05 10 33.00 -14 54 23.2 V T05
2021-02-16 07:51:36 C 05 10 40.50 -14 53 45.0 V T05
2021-02-16 09:30:57 C 05 11 29.34 -14 49 00.2 V 474
2021-02-16 09:32:24 C 05 11 30.06 -14 48 56.9 V 474
2021-02-16 09:33:50 C 05 11 30.66 -14 48 53.6 V 474
2021-02-16 09:35:17 C 05 11 31.41 -14 48 49.2 V 474
2021-02-17 05:51:00 C 05 21 12.942 -14 01 14.42 U F52
2021-02-17 06:06:47 C 05 21 20.170 -14 00 36.54 U F52
2021-02-17 07:01:52 C 05 21 45.36 -13 58 24.1 V T05
2021-02-17 07:06:28 C 05 21 47.48 -13 58 12.9 V T05
2021-02-17 07:13:56 C 05 21 50.89 -13 57 54.9 V T05
2021-02-17 07:28:31 C 05 21 57.57 -13 57 19.5 V T05
2021-02-18 12:34:43 S 05 35 20.854 -12 46 58.40 L C51
2021-02-18 15:43:01 S 05 36 45.221 -12 39 25.70 L C51
2021-02-18 18:51:21 S 05 38 09.247 -12 31 53.47 L C51
2021-02-18 20:25:25 S 05 38 50.998 -12 28 07.72 L C51
2021-02-18 23:33:44 S 05 40 14.350 -12 20 35.41 L C51
2021-02-19 05:29:45 C 05 42 49.47 -12 06 50.6 V I52
2021-02-19 05:30:19 C 05 42 49.73 -12 06 49.4 V I52
2021-02-19 05:30:52 C 05 42 49.98 -12 06 48.0 V I52
2021-02-19 05:31:26 C 05 42 50.20 -12 06 46.7 V I52
2021-02-19 08:47:57 C 05 44 17.12 -11 58 03.7 V 474
2021-02-19 08:50:51 C 05 44 18.35 -11 57 56.8 V 474
2021-02-19 08:53:44 C 05 44 19.58 -11 57 49.9 V 474
2021-02-20 09:02:17 C 05 54 36.13 -11 00 28.8 V 474
2021-02-20 09:05:11 C 05 54 37.30 -11 00 21.9 V 474
2021-02-20 09:08:04 C 05 54 38.47 -11 00 15.1 V 474
2021-02-21 01:49:55 C 06 01 30.10 -10 22 02.8 u H21
2021-02-21 01:52:35 C 06 01 31.15 -10 21 56.7 u H21
2021-02-21 01:55:27 C 06 01 32.27 -10 21 50.0 u H21
2021-02-21 01:58:19 C 06 01 33.41 -10 21 43.3 u H21
2021-02-21 02:01:33 C 06 01 34.69 -10 21 35.9 u H21
2021-02-21 04:24:19 C 06 02 31.74 -10 15 59.6 V I52
2021-02-21 04:27:30 C 06 02 32.97 -10 15 50.2 V I52
2021-02-21 04:30:43 C 06 02 34.27 -10 15 45.3 V I52
2021-02-21 04:33:58 C 06 02 35.48 -10 15 37.7 V I52
2021-02-21 18:17:23 C 06 08 03.99 -09 44 01.2 V K83
2021-02-21 18:21:47 C 06 08 05.66 -09 43 51.4 V K83
2021-02-21 18:26:11 C 06 08 07.37 -09 43 41.2 V K83
2021-02-21 21:31:40 C 06 09 18.28 -09 36 35.4 V 160
2021-02-21 21:36:41 C 06 09 20.22 -09 36 24.7 V 160
2021-02-21 21:41:40 C 06 09 22.05 -09 36 14.2 V 160
2021-02-23 02:25:23 C 06 20 17.11 -08 31 33.3 u H21
2021-02-23 02:28:19 C 06 20 18.16 -08 31 26.7 u H21
2021-02-23 02:31:16 C 06 20 19.23 -08 31 20.6 u H21
2021-02-23 02:34:12 C 06 20 20.29 -08 31 14.1 u H21
2021-02-23 02:37:09 C 06 20 21.35 -08 31 07.7 u H21
2021-02-23 02:40:14 C 06 20 22.46 -08 31 00.7 u H21
2021-02-23 02:43:16 C 06 20 23.57 -08 30 54.1 u H21
2021-02-23 07:09:11 C 06 22 01.22 -08 20 56.9 V T08