Asteroid General Data

2018 ET₁

General information

Preliminary designation	2018 ET₁
Group	Apollo
Absolute magnitude	26.41
Approximate diameter (m)	14
Approximate mass (kg)	4.90·10⁶
Number of observations	39
Arc length (days)	11

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	287.799902
a – orbit major semiaxis (astronomical units)	1.28382100
e – orbit eccentricity	0.23891500
ω – orbit ascending node-perihelion angle (degrees)	208.900346
Ω – longitude of orbit ascending node (degrees)	354.012975
i – orbit inclination to the ecliptic plane (degrees)	7.762687

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	45.270978	1.28161766	0.23645369	206.037360	356.005070	7.962216	0.97857443	1.450903
01/21/1858	35.628685	1.28409261	0.23792674	206.232613	355.709431	7.930779	0.97857264	1.455108
01/29/1887	7.058379	1.28534567	0.23857400	206.504094	355.426207	7.913602	0.97869560	1.457238
02/07/1916	349.493148	1.27303189	0.23279114	208.175958	355.121013	7.926581	0.97668134	1.436348
02/14/1945	64.419090	1.27225752	0.23230674	208.508171	354.934858	7.922271	0.97670352	1.435037
02/22/1974	136.598451	1.27504178	0.23387629	208.740916	354.597498	7.886365	0.97683974	1.439750
03/02/2003	191.643907	1.27541348	0.23408680	209.014447	354.419374	7.880046	0.97685601	1.440380
03/09/2032	202.859614	1.28390336	0.23896162	208.927541	353.989444	7.761355	0.97709973	1.454786
03/17/2061	161.780856	1.28565751	0.24017366	209.177806	353.661616	7.718210	0.97687644	1.457768
03/25/2090	125.352908	1.28301558	0.23893019	209.781033	353.381558	7.721084	0.97646443	1.453277
04/03/2119	116.704830	1.28265588	0.23886183	210.092754	353.200469	7.716457	0.97627835	1.452666
04/10/2148	107.744113	1.28307253	0.23899037	210.353178	352.980889	7.708423	0.97643055	1.453374
04/18/2177	86.970527	1.28460826	0.23993974	210.604513	352.636565	7.686121	0.97637969	1.455984

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