Asteroid General Data

2021 ET₃

General information

Preliminary designation	2021 ET₃
Group	Apollo
Absolute magnitude	26.83
Approximate diameter (m)	11
Approximate mass (kg)	2.74·10⁶
Number of observations	36
Arc length (days)	3

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	308.021255
a – orbit major semiaxis (astronomical units)	1.52377900
e – orbit eccentricity	0.56025100
ω – orbit ascending node-perihelion angle (degrees)	261.997996
Ω – longitude of orbit ascending node (degrees)	356.612132
i – orbit inclination to the ecliptic plane (degrees)	6.370996

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	168.501090	1.52068699	0.56005387	258.001919	0.393832	6.294950	0.66902035	1.875255
01/21/1858	342.898845	1.51952376	0.56004093	258.558915	359.818881	6.304281	0.66852826	1.873104
01/29/1887	160.242611	1.51945348	0.55982155	259.194263	359.256417	6.299664	0.66883069	1.872974
02/07/1916	338.093365	1.52166088	0.55999085	259.665630	358.739845	6.304633	0.66954471	1.877057
02/14/1945	143.445996	1.52175104	0.56010825	260.296059	358.174169	6.292455	0.66940573	1.877224
02/22/1974	308.461791	1.52184930	0.56009526	260.850126	357.667977	6.291808	0.66946872	1.877405
03/02/2003	112.587490	1.52183738	0.56024255	261.536115	357.122349	6.280653	0.66923932	1.877383
03/09/2032	276.010249	1.52378159	0.56044705	262.045116	356.573396	6.370013	0.66978269	1.880982
03/17/2061	68.230374	1.52411044	0.56091247	262.696263	356.039690	6.360693	0.66921788	1.881591
03/25/2090	217.813648	1.52498560	0.56062394	263.276433	355.554191	6.354130	0.67004216	1.883212
04/03/2119	7.711805	1.52397032	0.56065198	263.863236	355.034633	6.350720	0.66955334	1.881332
04/10/2148	158.165368	1.52508420	0.56064410	264.617970	354.411399	6.345566	0.67005474	1.883395
04/18/2177	307.298861	1.52475491	0.56042395	265.165249	353.949490	6.339717	0.67024574	1.882785

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