2021 EK4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5668463082 ± 2.11e-05
Semi-major axis (a)2.4722046455 AU ± 1.09e-04
Inclination (i)14.94005939° ± 3.05e-04
Long. of Asc. Node (Ω)176.34228812° ± 2.58e-04
Arg. of Perihelion (ω)44.85742428° ± 3.31e-04
Mean Anomaly (M)60.76971076° ± 2.89e-02
Mean Motion (n)0.2535628642°/day ± 1.67e-05
Perihelion dist (q)1.07084457 AU ± 7.03e-05
Aphelion dist (Q)3.87356472 AU ± 1.78e-04
Orbital Period3.88710818 yr ± 2.56e-04
Physical Parameters
H (abs. magnitude)22.43
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.338″
Uncertainty2
Orbit TypeAmor
MOID0.141724 AU
Observations Used107
Oppositions1
Arc Total2021-2021
First Observation Used2021-03-13
Last Observation Used2021-06-18
Observations (107)
Date Type RA Dec Mag Band Observatory
2021-04-01 04:14:21 C 13 21 27.14 +22 03 24.3 V H06
2021-04-01 05:07:01 C 13 21 40.41 +22 07 13.1 V H06
2021-04-04 10:24:31 C 13 43 07.51 +27 35 34.9 V I52
2021-04-04 10:25:44 C 13 43 07.86 +27 35 39.9 V I52
2021-04-04 10:26:57 C 13 43 08.19 +27 35 45.0 V I52
2021-04-05 06:37:32 C 13 49 12.65 +28 59 20.0 V I52
2021-04-05 07:20:30 C 13 49 25.01 +29 02 17.8 V I52
2021-04-05 07:22:19 C 13 49 25.52 +29 02 25.2 V I52
2021-04-06 12:24:05 C 13 58 19.81 +30 59 59.1 V T08
2021-04-06 12:53:35 C 13 58 28.47 +31 01 55.1 V T08
2021-04-06 12:57:11 C 13 58 29.51 +31 02 08.4 V T08
2021-04-06 13:03:55 C 13 58 31.65 +31 02 34.7 V T08
2021-04-13 06:27:52 C 14 52 53.47 +40 18 14.1 V I52
2021-04-13 06:30:34 C 14 52 54.36 +40 18 21.4 V I52
2021-04-13 06:31:40 C 14 52 54.76 +40 18 24.8 V I52
2021-04-14 10:58:31 C 15 02 53.42 +41 35 09.9 V I52
2021-04-14 10:59:38 C 15 02 53.82 +41 35 12.8 V I52
2021-04-14 11:00:44 C 15 02 54.16 +41 35 15.5 V I52
2021-04-14 11:16:54 C 15 02 59.67 +41 35 56.2 V I52
2021-04-23 01:05:43 C 16 13 32.98 +47 33 17.3 V 033
2021-04-23 01:10:27 C 16 13 34.43 +47 33 21.9 V 033
2021-04-23 01:15:12 C 16 13 35.92 +47 33 26.7 V 033
2021-04-23 09:21:43 C 16 16 10.16 +47 41 29.0 V I52
2021-04-23 09:29:37 C 16 16 12.49 +47 41 36.5 V I52
2021-04-23 23:59:43 C 16 20 45.62 +47 54 16.3 V 033
2021-04-24 00:04:42 C 16 20 47.12 +47 54 20.5 V 033
2021-04-24 00:09:42 C 16 20 48.60 +47 54 24.9 V 033
2021-04-24 22:32:23 C 16 27 40.43 +48 11 53.7 V 033
2021-04-24 22:37:27 C 16 27 41.90 +48 11 57.6 V 033
2021-04-24 22:42:32 C 16 27 43.43 +48 12 01.7 V 033
2021-04-24 22:47:41 C 16 27 44.93 +48 12 05.6 V 033
2021-04-25 23:15:01 C 16 35 00.30 +48 28 10.8 V 033
2021-04-25 23:19:07 C 16 35 01.45 +48 28 13.5 V 033
2021-04-25 23:21:46 C 16 35 02.19 +48 28 15.0 V 033
2021-04-25 23:32:47 C 16 35 05.34 +48 28 22.2 V 033
2021-04-26 23:05:51 C 16 41 51.48 +48 40 56.4 V 033
2021-04-26 23:07:01 C 16 41 51.82 +48 40 57.2 V 033
2021-04-26 23:08:10 C 16 41 52.15 +48 40 58.1 V 033
2021-04-26 23:09:20 C 16 41 52.48 +48 40 58.9 V 033
2021-04-26 23:10:30 C 16 41 52.78 +48 40 59.3 V 033
2021-04-26 23:11:40 C 16 41 53.10 +48 41 00.1 V 033
2021-04-27 01:13:21 C 16 42 25.99 +48 42 00.4 V 033
2021-04-27 01:14:51 C 16 42 26.39 +48 42 01.3 V 033
2021-04-28 01:14:23 C 16 49 04.55 +48 51 59.9 V 033
2021-04-28 01:16:33 C 16 49 05.11 +48 52 00.7 V 033
2021-04-28 01:18:43 C 16 49 05.67 +48 52 01.5 V 033
2021-04-28 01:20:53 C 16 49 06.22 +48 52 02.3 V 033
2021-04-30 00:31:39 C 17 01 27.29 +49 04 44.7 V 033
2021-04-30 00:36:48 C 17 01 28.53 +49 04 45.1 V 033
2021-05-21 07:20:20 C 18 22 27.74 +46 01 07.6 u H21