Asteroid General Data

2021 WK₄

General information

Preliminary designation	2021 WK₄
Group	Apollo
Absolute magnitude	27.65
Approximate diameter (m)	8
Approximate mass (kg)	8.83·10⁵
Number of observations	19
Arc length (days)	2

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	68.231223
a – orbit major semiaxis (astronomical units)	1.66404800
e – orbit eccentricity	0.45425200
ω – orbit ascending node-perihelion angle (degrees)	226.271827
Ω – longitude of orbit ascending node (degrees)	245.880897
i – orbit inclination to the ecliptic plane (degrees)	8.922018

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	55.503959	1.66787959	0.45419100	223.025672	248.126430	9.119244	0.91034369	2.154010
01/21/1858	221.789738	1.66872502	0.45468518	223.415865	247.797957	9.094816	0.90998049	2.155648
01/29/1887	28.268388	1.66826375	0.45438364	223.817370	247.506437	9.079402	0.91023199	2.154754
02/07/1916	201.158205	1.66550667	0.45400745	224.383258	247.163605	9.065339	0.90935423	2.149415
02/14/1945	19.777153	1.65974206	0.45253330	225.073301	246.832299	9.039574	0.90865352	2.138265
02/22/1974	226.113787	1.65998967	0.45250947	225.478432	246.542292	9.021909	0.90882861	2.138743
03/02/2003	71.467725	1.65995143	0.45276813	225.915945	246.206284	9.008923	0.90837832	2.138670
03/09/2032	266.350707	1.66385420	0.45457430	226.356279	245.838124	8.919122	0.90750884	2.146216
03/17/2061	92.362675	1.66449398	0.45438119	226.755604	245.488693	8.902815	0.90817922	2.147454
03/25/2090	277.828276	1.66396145	0.45440350	227.130339	245.217025	8.890965	0.90785155	2.146424
04/03/2119	91.814450	1.66800180	0.45541821	227.585700	244.829752	8.836878	0.90836340	2.154246
04/10/2148	275.982647	1.66464518	0.45480989	228.170300	244.504307	8.802794	0.90754810	2.147747
04/18/2177	99.050506	1.66472727	0.45468440	228.736654	244.118113	8.784552	0.90780175	2.147906

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