2021 CS4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4545796000
Semi-major axis (a)1.3604416000 AU
Inclination (i)19.51593000°
Long. of Asc. Node (Ω)146.50854000°
Arg. of Perihelion (ω)88.58094000°
Mean Anomaly (M)324.92307000°
Mean Motion (n)0.6211324400°/day
Perihelion dist (q)0.74201260 AU
Aphelion dist (Q)1.97887060 AU
Orbital Period1.58679150 yr
Physical Parameters
H (abs. magnitude)23.31
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.840″
Uncertainty8
Orbit TypeApollo
MOID0.044685 AU
Observations Used29
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-02-20
Observations (29)
Date Type RA Dec Mag Band Observatory
2021-02-08 09:36:43 C 12 07 55.79 -07 14 25.0 V G96
2021-02-08 09:44:05 C 12 07 58.87 -07 14 05.4 V G96
2021-02-08 09:51:28 C 12 08 01.92 -07 13 45.3 V G96
2021-02-08 09:58:50 C 12 08 05.04 -07 13 25.3 V G96
2021-02-08 11:43:55 C 12 08 49.14 -07 08 37.6 V I52
2021-02-08 11:47:34 C 12 08 50.68 -07 08 27.7 V I52
2021-02-09 05:11:02 C 12 16 48.15 -06 17 42.0 V J04
2021-02-09 05:13:26 C 12 16 49.27 -06 17 34.5 V J04
2021-02-09 05:15:49 C 12 16 50.35 -06 17 27.0 V J04
2021-02-09 07:51:23 C 12 18 06.24 -06 08 16.3 u 807
2021-02-09 07:56:26 C 12 18 08.58 -06 08 00.2 u 807
2021-02-09 08:01:15 C 12 18 10.82 -06 07 45.0 u 807
2021-02-09 09:35:08 C 12 18 57.63 -06 04 00.6 V I52
2021-02-09 09:36:33 C 12 18 58.32 -06 03 56.0 V I52
2021-02-09 09:37:59 C 12 18 58.99 -06 03 51.7 V I52
2021-02-09 09:39:24 C 12 18 59.65 -06 03 47.5 V I52
2021-02-10 00:28:01 C 12 26 30.90 -05 14 47.6 V 033
2021-02-10 00:29:56 C 12 26 31.87 -05 14 41.0 V 033
2021-02-13 09:35:55 C 13 19 35.86 +00 52 00.0 V I52
2021-02-13 09:36:44 C 13 19 36.48 +00 52 04.4 V I52
2021-02-13 09:37:32 C 13 19 37.11 +00 52 09.1 V I52
2021-02-13 09:38:22 C 13 19 37.77 +00 52 13.9 V I52
2021-02-17 10:34:09 C 14 56 22.26 +11 49 14.8 V I52
2021-02-17 10:34:58 C 14 56 23.14 +11 49 20.0 V I52
2021-02-17 10:35:47 C 14 56 24.10 +11 49 25.4 V I52
2021-02-20 11:42:58 C 16 25 30.96 +19 42 59.4 V I52
2021-02-20 11:51:22 C 16 25 40.86 +19 43 43.8 V I52
2021-02-20 11:55:28 C 16 25 45.70 +19 44 05.1 V I52
2021-02-20 11:59:33 C 16 25 50.49 +19 44 26.0 V I52