2021 JK4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1861180444 ± 2.73e-07
Semi-major axis (a)1.5255535471 AU ± 9.44e-08
Inclination (i)28.89387830° ± 1.86e-05
Long. of Asc. Node (Ω)216.33465955° ± 7.76e-06
Arg. of Perihelion (ω)102.03538194° ± 9.44e-05
Mean Anomaly (M)67.10377081° ± 4.89e-05
Mean Motion (n)0.5230835857°/day ± 4.86e-08
Perihelion dist (q)1.24162050 AU ± 4.23e-07
Aphelion dist (Q)1.80948659 AU ± 4.31e-07
Orbital Period1.88426154 yr ± 1.75e-07
Physical Parameters
H (abs. magnitude)21.69
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.175″
Uncertainty0
Orbit TypeAmor
MOID0.387925 AU
Observations Used57
Oppositions2
Arc Total2021-2025
First Observation Used2021-04-16
Last Observation Used2025-11-14
Observations (61)
Date Type RA Dec Mag Band Observatory
2021-04-16 07:42:30 C 13 29 19.239 -23 35 51.07 V F52
2021-04-16 08:30:33 C 13 29 16.617 -23 34 26.67 V F52
2021-04-16 08:54:37 C 13 29 15.265 -23 33 43.50 V F52
2021-05-04 09:38:58 C 13 09 35.755 -09 15 23.96 V F51
2021-05-04 09:57:31 C 13 09 35.047 -09 14 45.87 V F51
2021-05-08 08:23:55 C 13 06 39.207 -06 06 24.61 U F51
2021-05-08 08:39:43 C 13 06 38.697 -06 05 53.89 U F51
2021-05-08 09:11:19 C 13 06 37.698 -06 04 52.00 U F51
2021-05-09 06:31:56 C 13 06 04.211 -05 23 25.08 V 568
2021-05-09 06:33:22 C 13 06 04.174 -05 23 22.37 V 568
2021-05-09 06:34:47 C 13 06 04.130 -05 23 19.58 V 568
2021-05-10 04:40:31 C 13 05 30.74 -04 41 00.3 V H01
2021-05-10 04:46:32 C 13 05 30.59 -04 40 48.7 V H01
2021-05-10 05:04:51 C 13 05 30.07 -04 40 13.9 V H01
2021-05-10 05:23:08 C 13 05 29.58 -04 39 39.0 V H01
2021-05-11 04:23:00 C 13 04 58.00 -03 56 10.2 V H01
2021-05-11 04:27:57 C 13 04 57.85 -03 56 00.8 V H01
2021-05-11 04:43:52 C 13 04 57.45 -03 55 30.8 V H01
2021-05-11 05:07:51 C 13 04 56.83 -03 54 46.0 V H01
2021-05-14 07:28:31 C 13 03 32.398 -01 38 57.40 V F51
2021-05-14 07:43:31 C 13 03 32.079 -01 38 31.07 V F51
2021-05-14 07:58:33 C 13 03 31.798 -01 38 04.46 V F51
2021-05-18 05:17:51 C 13 02 25.28 +01 00 44.4 V V00
2021-05-18 05:24:55 C 13 02 25.20 +01 00 56.1 V V00
2021-05-18 05:31:58 C 13 02 25.13 +01 01 07.6 V V00
2021-05-18 05:39:00 C 13 02 25.05 +01 01 18.8 V V00
2021-05-18 09:46:09 C 13 02 22.845 +01 08 03.27 V 568
2021-05-18 10:01:07 C 13 02 22.679 +01 08 27.74 V 568
2023-05-01 14:36:32 C 17 29 25.187 +02 15 12.90 V F52
2023-05-26 09:10:16 C 17 24 40.834 +27 16 45.56 V F51
2023-05-26 10:03:32 C 17 24 38.944 +27 18 49.23 V F51
2023-05-27 08:16:29 C 17 23 56.270 +28 09 28.70 V I52
2023-05-27 08:27:37 C 17 23 55.840 +28 09 53.90 V I52
2023-05-27 08:49:53 C 17 23 55.020 +28 10 44.20 V I52
2023-05-28 08:24:58 C 17 23 08.243 +29 03 33.16 V G96
2023-05-28 08:32:27 C 17 23 07.962 +29 03 49.32 V G96
2023-05-28 08:39:57 C 17 23 07.663 +29 04 05.41 V G96
2023-05-28 08:47:24 C 17 23 07.426 +29 04 21.50 V G96
2025-10-15 08:06:40 C 01 50 38.151 +32 18 22.23 X F51
2025-10-15 08:21:19 C 01 50 37.566 +32 17 40.09 X F51
2025-10-15 08:35:51 C 01 50 36.964 +32 16 58.62 X F51
2025-10-18 21:56:14 B 01 47 37.45 +28 04 33.3 X N94
2025-10-18 22:13:27 B 01 47 36.85 +28 03 41.4 X N94
2025-10-18 22:30:38 B 01 47 36.21 +28 02 49.2 X N94
2025-10-20 07:44:17 C 01 46 29.680 +26 22 35.72 V V00
2025-10-20 07:52:20 C 01 46 29.359 +26 22 11.24 V V00
2025-10-20 08:00:23 C 01 46 29.053 +26 21 46.91 V V00
2025-10-20 08:08:25 C 01 46 28.733 +26 21 22.32 V V00
2025-10-21 14:31:43 C 01 45 29.34 +24 49 01.4 V D29
2025-10-21 14:52:05 C 01 45 28.57 +24 47 59.2 V D29