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
2025-10-21 15:12:27 C 01 45 27.76 +24 46 57.2 V D29
2025-10-26 15:35:24 C 01 41 49.22 +18 42 46.1 V D29
2025-10-26 16:16:08 C 01 41 47.86 +18 40 45.9 V D29
2025-10-27 05:23:22 C 01 41 27.236 +18 01 47.10 V G96
2025-10-27 05:30:47 C 01 41 26.948 +18 01 26.00 V G96
2025-10-27 05:38:12 C 01 41 26.725 +18 01 04.37 V G96
2025-10-27 05:45:38 C 01 41 26.488 +18 00 42.12 V G96
2025-10-28 13:39:49 C 01 40 36.92 +16 26 58.8 V D29
2025-10-28 14:00:11 C 01 40 36.33 +16 25 59.6 V D29
2025-11-14 02:22:40 C 01 35 29.92 +00 29 06.1 V H21
2025-11-14 02:27:31 C 01 35 29.91 +00 28 56.8 V H21