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
2021-01-16 14:49:13 C 10 19 11.982 +20 01 04.39 V F51
2021-01-16 15:02:32 C 10 19 11.747 +20 01 10.12 V F51
2021-01-16 15:15:51 C 10 19 11.538 +20 01 14.88 V F51
2021-01-16 15:29:13 C 10 19 11.269 +20 01 20.81 V F51
2021-01-24 14:12:24 C 10 14 35.006 +21 33 53.57 V F51
2021-01-24 14:31:13 C 10 14 34.303 +21 34 03.96 V F51
2021-01-24 14:50:03 C 10 14 33.616 +21 34 14.61 V F51
2021-01-24 15:08:54 C 10 14 32.930 +21 34 24.98 V F51
2021-02-06 08:38:59 C 09 58 08.859 +25 03 25.04 V F52
2021-02-06 08:55:30 C 09 58 07.552 +25 03 39.24 V F52
2021-02-06 09:28:33 C 09 58 04.920 +25 04 05.85 V F52
2021-02-07 08:40:55 C 09 56 16.815 +25 22 58.83 V F52
2021-02-07 08:56:37 C 09 56 15.516 +25 23 12.01 V F52
2021-02-08 09:11:45 C 09 54 16.640 +25 43 21.91 U F51
2021-02-08 09:29:26 C 09 54 15.084 +25 43 36.97 U F51
2021-02-08 09:47:07 C 09 54 13.536 +25 43 51.93 U F51
2021-02-08 10:04:54 C 09 54 11.970 +25 44 06.92 U F51
2021-02-09 07:09:38 C 09 52 24.353 +26 01 56.08 V 568
2021-02-09 07:13:24 C 09 52 24.017 +26 01 59.53 V 568
2021-02-09 07:14:49 C 09 52 23.896 +26 02 00.74 V 568
2021-02-09 19:01:31 C 09 51 21.32 +26 11 58.7 V 033
2021-02-09 19:05:11 C 09 51 20.96 +26 12 01.4 V 033
2021-02-09 22:55:55 C 09 51 00.201 +26 15 28.09 V J04
2021-02-09 23:00:39 C 09 50 59.768 +26 15 32.34 V J04
2021-02-09 23:05:24 C 09 50 59.322 +26 15 36.55 V J04
2021-02-10 00:41:29 C 09 50 49.88 +26 16 55.2 V 033
2021-02-10 00:45:08 C 09 50 49.52 +26 16 58.3 V 033
2021-02-10 00:48:48 C 09 50 49.19 +26 17 01.5 V 033
2021-02-10 07:14:08 C 09 50 14.51 +26 22 40.5 V G96
2021-02-10 07:21:31 C 09 50 13.91 +26 22 42.7 L 658
2021-02-10 07:21:37 C 09 50 13.80 +26 22 46.8 V G96
2021-02-10 07:23:45 C 09 50 13.69 +26 22 44.8 L 658
2021-02-10 07:25:58 C 09 50 13.48 +26 22 46.7 L 658
2021-02-10 07:28:11 C 09 50 13.26 +26 22 48.6 L 658
2021-02-10 07:29:07 C 09 50 13.05 +26 22 53.6 V G96
2021-02-10 07:30:25 C 09 50 13.07 +26 22 50.6 L 658
2021-02-10 07:32:38 C 09 50 12.85 +26 22 52.7 L 658
2021-02-10 07:36:36 C 09 50 12.38 +26 23 00.3 V G96
2021-02-10 09:14:49 C 09 50 03.744 +26 24 27.73 U F51
2021-02-10 09:32:33 C 09 50 02.041 +26 24 43.38 U F51
2021-02-10 09:50:30 C 09 50 00.318 +26 24 59.21 U F51
2021-02-17 06:46:17 C 09 32 25.99 +28 55 11.8 V 703
2021-02-17 07:02:48 C 09 32 24.08 +28 55 26.4 V 703
2021-02-17 07:11:04 C 09 32 23.05 +28 55 32.5 V 703
2021-02-17 07:56:54 C 09 32 18.050 +28 56 19.19 U F52
2021-02-17 08:14:20 C 09 32 15.856 +28 56 35.77 U F52
2021-02-17 08:31:46 C 09 32 13.651 +28 56 52.61 U F52
2021-02-17 08:49:12 C 09 32 11.430 +28 57 09.17 U F52
2021-02-21 04:26:11 C 09 20 14.84 +30 23 44.6 u H21
2021-02-21 04:32:54 C 09 20 13.85 +30 23 50.9 u H21