2021 AK4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2493615000
Semi-major axis (a)1.2697959000 AU
Inclination (i)24.69101000°
Long. of Asc. Node (Ω)112.78770000°
Arg. of Perihelion (ω)290.75360000°
Mean Anomaly (M)191.82688000°
Mean Motion (n)0.6888159400°/day
Perihelion dist (q)0.95315770 AU
Aphelion dist (Q)1.58643410 AU
Orbital Period1.43087230 yr
Physical Parameters
H (abs. magnitude)22.90
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.350″
Uncertainty7
Orbit TypeApollo
MOID0.097786 AU
Observations Used38
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-01-17
Observations (38)
Date Type RA Dec Mag Band Observatory
2021-01-09 10:50:10 C 11 10 09.84 +17 31 13.7 V G96
2021-01-09 10:57:36 C 11 10 10.09 +17 31 53.0 V G96
2021-01-09 11:05:02 C 11 10 10.33 +17 32 32.6 V G96
2021-01-09 11:12:27 C 11 10 10.54 +17 33 12.1 V G96
2021-01-09 12:44:51 C 11 10 13.40 +17 41 20.3 V I52
2021-01-09 12:47:16 C 11 10 13.38 +17 41 32.7 V I52
2021-01-10 08:10:33 C 11 11 03.27 +19 23 54.4 V V06
2021-01-10 08:12:29 C 11 11 03.32 +19 24 04.6 V V06
2021-01-10 08:14:24 C 11 11 03.38 +19 24 15.1 V V06
2021-01-10 23:44:28 C 11 11 38.45 +20 45 32.4 V L01
2021-01-10 23:48:59 C 11 11 38.68 +20 45 55.8 V L01
2021-01-10 23:58:03 C 11 11 38.90 +20 46 43.2 V L01
2021-01-11 00:03:25 C 11 11 39.09 +20 47 11.2 V L01
2021-01-11 00:25:38 C 11 11 39.69 +20 49 04.8 V 033
2021-01-11 00:28:38 C 11 11 39.77 +20 49 20.3 V 033
2021-01-11 00:31:38 C 11 11 39.86 +20 49 36.3 V 033
2021-01-11 03:45:35 C 11 11 45.44 +21 06 36.6 V 204
2021-01-11 04:15:38 C 11 11 46.25 +21 09 13.4 V 204
2021-01-11 08:15:05 C 11 11 57.32 +21 30 10.2 V I52
2021-01-11 08:25:22 C 11 11 57.57 +21 31 04.1 V I52
2021-01-11 08:48:37 C 11 11 58.10 +21 33 07.0 V I52
2021-01-12 08:34:06 C 11 12 46.80 +23 36 20.6 V V06
2021-01-12 08:36:02 C 11 12 46.85 +23 36 29.8 V V06
2021-01-12 08:37:57 C 11 12 46.87 +23 36 39.7 V V06
2021-01-12 12:55:29 C 11 12 52.27 +23 58 46.6 V I52
2021-01-12 13:02:45 C 11 12 52.39 +23 59 23.7 V I52
2021-01-16 09:53:32 C 11 15 11.02 +31 40 02.6 V I52
2021-01-16 09:57:10 C 11 15 11.06 +31 40 19.8 V I52
2021-01-16 10:00:48 C 11 15 11.06 +31 40 37.3 V I52
2021-01-16 10:37:37 C 11 15 11.28 +31 43 32.6 V I52
2021-01-17 12:18:46 C 11 15 33.02 +33 43 42.7 V G96
2021-01-17 12:26:08 C 11 15 32.99 +33 44 16.4 V G96
2021-01-17 12:33:31 C 11 15 33.02 +33 44 50.2 V G96
2021-01-17 12:40:54 C 11 15 33.04 +33 45 24.6 V G96
2021-01-17 15:01:46 C 11 15 35.182 +33 56 21.42 U F51
2021-01-17 15:14:53 C 11 15 35.164 +33 57 21.88 U F51
2021-01-17 15:28:00 C 11 15 35.164 +33 58 21.27 U F51
2021-01-17 15:41:04 C 11 15 35.178 +33 59 21.29 U F51