2021 QK4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4873298696 ± 1.43e-04
Semi-major axis (a)2.1515678968 AU ± 6.57e-04
Inclination (i)6.86657999° ± 1.51e-03
Long. of Asc. Node (Ω)312.69127795° ± 4.10e-04
Arg. of Perihelion (ω)38.19069887° ± 6.12e-04
Mean Anomaly (M)117.48967621° ± 2.18e-01
Mean Motion (n)0.3123055432°/day ± 1.43e-04
Perihelion dist (q)1.10304459 AU ± 4.56e-04
Aphelion dist (Q)3.20009120 AU ± 1.02e-03
Orbital Period3.15596794 yr ± 1.45e-03
Physical Parameters
H (abs. magnitude)24.59
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.337″
Uncertainty3
Orbit TypeAmor
MOID0.114536 AU
Observations Used21
Oppositions1
Arc Total2021-2021
First Observation Used2021-08-30
Last Observation Used2021-09-26
Observations (21)
Date Type RA Dec Mag Band Observatory
2021-08-30 06:39:33 C 21 26 14.474 +13 17 59.41 U F51
2021-08-30 06:58:24 C 21 26 16.297 +13 19 15.31 U F51
2021-08-30 07:17:03 C 21 26 18.111 +13 20 31.05 U F51
2021-09-02 02:26:14 C 21 34 21.67 +17 47 46.7 u H21
2021-09-02 02:38:19 C 21 34 23.03 +17 48 34.8 u H21
2021-09-02 02:50:24 C 21 34 24.34 +17 49 22.7 u H21
2021-09-02 19:38:02 C 21 36 32.93 +18 55 09.7 V 033
2021-09-02 19:41:37 C 21 36 33.33 +18 55 23.7 V 033
2021-09-02 19:45:12 C 21 36 33.77 +18 55 37.9 V 033
2021-09-02 19:48:57 C 21 36 34.19 +18 55 53.0 V 033
2021-09-02 20:29:09 C 21 36 39.11 +18 58 38.1 V 104
2021-09-02 20:37:40 C 21 36 40.08 +18 59 12.4 V 104
2021-09-02 20:50:50 C 21 36 41.41 +19 00 03.3 V L01
2021-09-02 20:54:35 C 21 36 41.77 +19 00 18.2 V L01
2021-09-02 20:58:20 C 21 36 42.18 +19 00 33.2 V L01
2021-09-02 21:03:18 C 21 36 42.80 +19 00 52.5 V L01
2021-09-09 08:33:35 C 21 58 49.41 +28 32 46.7 o 291
2021-09-09 08:37:38 C 21 58 49.95 +28 32 59.5 o 291
2021-09-09 08:41:40 C 21 58 50.50 +28 33 13.0 o 291
2021-09-26 02:54:18 C 23 09 46.22 +44 02 21.3 u H21
2021-09-26 03:08:04 C 23 09 48.49 +44 02 39.4 u H21