Asteroid General Data

2018 ER₁

General information

Preliminary designation	2018 ER₁
Group	Apollo
Absolute magnitude	25.70
Approximate diameter (m)	19
Approximate mass (kg)	1.31·10⁷
Number of observations	63
Arc length (days)	28

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	36.805246
a – orbit major semiaxis (astronomical units)	1.01034400
e – orbit eccentricity	0.09244100
ω – orbit ascending node-perihelion angle (degrees)	101.395039
Ω – longitude of orbit ascending node (degrees)	187.796678
i – orbit inclination to the ecliptic plane (degrees)	6.386473

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	187.112335	1.01120750	0.08732785	103.101336	192.304613	6.646695	0.92290092	1.016860
01/21/1858	3.288574	1.01254402	0.08753684	102.181570	191.647857	6.639855	0.92390911	1.018876
01/29/1887	185.432629	1.00769578	0.08998836	100.651067	190.573367	6.503638	0.91701489	1.011567
02/07/1916	41.689556	1.00959089	0.09014240	101.697950	190.375352	6.498955	0.91858395	1.014422
02/14/1945	257.940201	1.00997844	0.09022690	101.935896	190.251299	6.501410	0.91885122	1.015006
02/22/1974	115.715864	1.01052646	0.09128697	101.201100	189.080680	6.441964	0.91827857	1.015833
03/02/2003	321.881722	1.01062207	0.09137942	101.418139	188.960760	6.444700	0.91827200	1.015977
03/09/2032	177.125162	1.01063963	0.09233442	101.499802	187.776058	6.386537	0.91732281	1.016003
03/17/2061	23.800315	1.01035676	0.09246790	101.645118	187.661604	6.390213	0.91693119	1.015577
03/25/2090	228.804989	1.01427143	0.09458884	102.245110	186.596426	6.278537	0.91833267	1.021485
04/03/2119	14.925364	1.01433852	0.09435978	102.432158	186.481638	6.283005	0.91862577	1.021586
04/10/2148	163.665306	1.01457453	0.09496940	103.226267	185.717065	6.261020	0.91822099	1.021943
04/18/2177	308.565762	1.01447169	0.09479742	103.309419	185.616707	6.265343	0.91830239	1.021787

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