Asteroid General Data

2021 RK₄

General information

Preliminary designation	2021 RK₄
Group	Apollo
Absolute magnitude	26.05
Approximate diameter (m)	16
Approximate mass (kg)	8.05·10⁶
Number of observations	38
Arc length (days)	5

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	244.307056
a – orbit major semiaxis (astronomical units)	2.09506100
e – orbit eccentricity	0.52416400
ω – orbit ascending node-perihelion angle (degrees)	333.312049
Ω – longitude of orbit ascending node (degrees)	341.253833
i – orbit inclination to the ecliptic plane (degrees)	7.227829

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	18.192312	2.07405224	0.51504271	328.183217	344.312253	6.977862	1.00582675	2.986965
01/21/1858	277.840701	2.07235245	0.51736248	328.911937	343.847316	7.016180	1.00019504	2.983294
01/29/1887	176.044880	2.08179989	0.52324635	330.331879	343.133547	7.091923	0.99250571	3.003718
02/07/1916	38.466680	2.08853660	0.52488493	331.305026	342.696056	7.125783	0.99229521	3.018309
02/14/1945	255.558579	2.09225486	0.52113614	331.963260	342.431087	7.135221	1.00190524	3.026373
02/22/1974	108.712721	2.09266124	0.51948937	332.220045	342.232793	7.128464	1.00554598	3.027255
03/02/2003	320.280219	2.09096714	0.52093907	332.553064	341.857016	7.144036	1.00170066	3.023580
03/09/2032	179.433898	2.09016938	0.52306688	333.343164	341.220611	7.211605	0.99687100	3.021850
03/17/2061	37.822762	2.08891915	0.52473501	334.104204	340.811309	7.252604	0.99279014	3.019139
03/25/2090	255.865179	2.08975261	0.52338032	335.105606	340.437191	7.284120	0.99601722	3.020946
04/03/2119	109.762097	2.09213777	0.52089705	335.486018	340.236714	7.276551	1.00234937	3.026119
04/10/2148	321.278690	2.09135983	0.51908225	335.692772	339.962153	7.272184	1.00577207	3.024432
04/18/2177	169.845307	2.09347742	0.52198164	336.320268	339.509537	7.320733	1.00072065	3.029026

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