2021 CB4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7056420826 ± 1.31e-05
Semi-major axis (a)2.2155352149 AU ± 6.79e-05
Inclination (i)4.66409537° ± 7.25e-05
Long. of Asc. Node (Ω)59.54725137° ± 7.95e-04
Arg. of Perihelion (ω)195.56760659° ± 4.72e-04
Mean Anomaly (M)133.27586059° ± 2.32e-02
Mean Motion (n)0.2988782352°/day ± 1.37e-05
Perihelion dist (q)0.65216033 AU ± 3.53e-05
Aphelion dist (Q)3.77891010 AU ± 1.19e-04
Orbital Period3.29775195 yr ± 1.52e-04
Physical Parameters
H (abs. magnitude)20.73
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.250″
Uncertainty2
Orbit TypeApollo
MOID0.072927 AU
Observations Used68
Oppositions1
Arc Total2021-2021
First Observation Used2021-01-16
Last Observation Used2021-03-26
Observations (69)
Date Type RA Dec Mag Band Observatory
2021-02-21 04:38:04 C 09 20 13.11 +30 23 55.6 u H21
2021-02-23 04:42:00 C 09 13 20.41 +31 09 17.3 V I52
2021-02-23 04:44:50 C 09 13 20.00 +31 09 19.9 V I52
2021-02-23 04:47:40 C 09 13 19.54 +31 09 23.0 V I52
2021-02-23 04:50:30 C 09 13 19.09 +31 09 25.5 V I52
2021-03-03 02:45:46 C 08 42 06.96 +33 58 41.1 V I52
2021-03-03 02:54:28 C 08 42 05.34 +33 58 48.1 V I52
2021-03-03 02:56:04 C 08 42 05.07 +33 58 49.9 V I52
2021-03-05 09:30:31 C 08 31 59.56 +34 42 03.1 V G96
2021-03-05 09:40:29 C 08 31 57.64 +34 42 09.9 V G96
2021-03-05 09:50:30 C 08 31 55.80 +34 42 16.9 V G96
2021-03-05 10:00:26 C 08 31 53.88 +34 42 24.1 V G96
2021-03-11 02:57:12 C 08 04 58.10 +36 14 49.4 V I52
2021-03-11 02:58:19 C 08 04 57.88 +36 14 50.5 V I52
2021-03-11 02:59:25 C 08 04 57.64 +36 14 51.4 V I52
2021-03-11 03:00:31 C 08 04 57.41 +36 14 51.9 V I52
2021-03-26 02:58:08 C 06 46 17.37 +37 55 33.6 V I52
2021-03-26 02:59:57 C 06 46 16.98 +37 55 32.6 V I52
2021-03-26 03:01:46 C 06 46 16.53 +37 55 32.9 V I52