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
2014-02-21 09:23:15 S 04 28 46.219 -03 08 09.96 L C51
2014-02-21 10:58:03 S 04 29 23.902 -03 05 53.66 L C51
2014-02-21 17:17:26 S 04 31 54.074 -02 56 47.65 L C51
2017-05-21 11:06:58 C 16 17 47.929 -14 20 10.21 V F51
2017-05-21 11:24:47 C 16 17 46.930 -14 20 06.34 V F51
2019-05-04 10:54:31 C 14 26 15.951 -11 04 56.05 V F51
2019-05-07 09:40:23 C 14 22 13.818 -10 38 40.48 V F51
2019-05-07 09:58:27 C 14 22 12.759 -10 38 33.81 V F51
2019-05-07 10:19:28 C 14 22 11.558 -10 38 25.91 V F51
2019-05-07 10:37:34 C 14 22 10.513 -10 38 19.46 V F51
2019-05-09 08:17:59 C 14 19 39.814 -10 21 58.10 V F51
2019-05-09 08:35:56 C 14 19 38.833 -10 21 51.81 V F51
2019-05-09 08:53:52 C 14 19 37.825 -10 21 45.41 V F51
2019-05-09 09:11:49 C 14 19 36.813 -10 21 39.15 V F51
2020-05-30 13:10:10 C 20 42 28.715 -07 57 52.14 V F51
2020-05-30 13:30:34 C 20 42 28.880 -07 57 46.79 V F51
2020-05-30 13:51:01 C 20 42 28.997 -07 57 41.77 V F51
2020-05-30 14:11:25 C 20 42 29.170 -07 57 36.38 V F51
2020-06-14 10:22:08 C 20 42 16.528 -06 32 22.58 V F51
2020-06-14 10:37:59 C 20 42 16.324 -06 32 19.12 V F51
2020-06-14 10:53:51 C 20 42 16.168 -06 32 15.75 V F51
2020-06-14 11:09:46 C 20 42 15.945 -06 32 12.38 V F51
2020-06-22 11:36:16 C 20 38 54.898 -05 55 02.29 V F51
2020-06-22 12:14:56 C 20 38 53.891 -05 54 55.92 V F51
2020-06-28 12:03:15 C 20 34 42.561 -05 33 04.67 V F52
2020-06-28 12:21:11 C 20 34 41.880 -05 33 02.54 V F52
2020-06-28 12:57:03 C 20 34 40.572 -05 32 57.63 V F52
2020-07-01 13:13:16 C 20 32 00.129 -05 24 16.64 V F52
2020-07-01 13:29:27 C 20 31 59.425 -05 24 14.07 V F52
2020-07-01 14:01:47 C 20 31 58.102 -05 24 10.70 V F52
2020-07-10 12:21:04 C 20 21 47.876 -05 08 57.07 V F52
2020-07-10 13:14:48 C 20 21 44.798 -05 08 56.11 V F52
2020-07-16 11:07:13 C 20 13 14.713 -05 08 44.48 V F52
2020-07-16 11:45:09 C 20 13 12.172 -05 08 45.70 V F52
2020-07-16 12:04:04 C 20 13 10.905 -05 08 46.36 V F52
2020-07-23 10:54:19 C 20 01 39.586 -05 19 48.51 V F52
2020-07-23 11:12:03 C 20 01 38.219 -05 19 50.09 V F52
2020-07-23 11:29:46 C 20 01 36.880 -05 19 52.11 V F52
2021-02-07 02:38:16 C 03 13 56.25 -21 56 13.7 V 703
2021-02-07 02:46:17 C 03 14 00.47 -21 56 03.2 V 703
2021-02-07 02:54:18 C 03 14 04.53 -21 55 54.2 V 703
2021-02-07 03:02:19 C 03 14 08.91 -21 55 44.1 V 703
2021-02-10 06:35:20 C 03 55 01.42 -20 03 05.5 V T08
2021-02-10 06:39:59 C 03 55 03.95 -20 02 57.3 V T08
2021-02-10 06:48:36 C 03 55 08.47 -20 02 41.9 V T08
2021-02-10 07:05:53 C 03 55 17.67 -20 02 11.3 V T08
2021-02-10 18:20:09 C 04 01 24.63 -19 42 16.7 V K74
2021-02-10 18:28:22 C 04 01 29.04 -19 42 02.3 V K74
2021-02-10 18:28:52 C 04 01 29.74 -19 42 01.3 V J95
2021-02-10 18:37:16 C 04 01 33.74 -19 41 45.4 V K74