Asteroid General Data

2021 AC₄

General information

Preliminary designation	2021 AC₄
Group	Apollo
Absolute magnitude	28.84
Approximate diameter (m)	5
Approximate mass (kg)	1.71·10⁵
Number of observations	44
Arc length (days)	2

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	187.956129
a – orbit major semiaxis (astronomical units)	1.72986400
e – orbit eccentricity	0.44457100
ω – orbit ascending node-perihelion angle (degrees)	335.294032
Ω – longitude of orbit ascending node (degrees)	110.135103
i – orbit inclination to the ecliptic plane (degrees)	3.077836

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	65.403136	1.68613913	0.43363731	329.572690	112.523105	2.652079	0.95496629	2.189479
01/21/1858	149.528150	1.68777849	0.43378223	330.091446	112.099262	2.680395	0.95565018	2.192673
01/29/1887	238.188892	1.68627672	0.43349133	330.450487	111.871246	2.684286	0.95529039	2.189747
02/07/1916	288.029964	1.70446264	0.43813158	331.835073	111.515313	2.828028	0.95768372	2.225266
02/14/1945	301.446562	1.70485041	0.43810462	332.102044	111.383107	2.830982	0.95794757	2.226025
02/22/1974	322.755112	1.70082443	0.43681002	333.104877	110.623957	2.852130	0.95788728	2.218145
03/02/2003	352.457512	1.70149988	0.43728395	333.431462	110.458013	2.854887	0.95746130	2.219466
03/09/2032	334.186309	1.72967095	0.44497186	335.405709	110.099470	3.079709	0.96001604	2.274814
03/17/2061	245.139502	1.73061475	0.44489127	335.617591	109.972742	3.081942	0.96067935	2.276676
03/25/2090	158.765032	1.72874514	0.44411519	336.392235	109.339348	3.109645	0.96098317	2.272988
04/03/2119	77.870831	1.72684156	0.44355293	337.018668	108.819482	3.131459	0.96089593	2.269234
04/10/2148	1.067032	1.72803837	0.44385137	337.369878	108.644107	3.133540	0.96104618	2.271594
04/18/2177	274.005019	1.73486940	0.44569205	337.950913	108.438031	3.119690	0.96165191	2.285077

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