Asteroid General Data

2009 ER

General information

Preliminary designation	2009 ER
Group	Apollo
Absolute magnitude	25.04
Approximate diameter (m)	26
Approximate mass (kg)	3.25·10⁷
Number of observations	28
Arc length (days)	14

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	284.203486
a – orbit major semiaxis (astronomical units)	1.88475900
e – orbit eccentricity	0.46646400
ω – orbit ascending node-perihelion angle (degrees)	154.416556
Ω – longitude of orbit ascending node (degrees)	349.963573
i – orbit inclination to the ecliptic plane (degrees)	4.432115

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	100.844782	1.88143811	0.46633772	150.611675	352.133465	4.374316	1.00405255	2.580688
01/21/1858	186.897983	1.88394694	0.46664762	151.279156	351.827068	4.381298	1.00480759	2.585852
01/29/1887	266.153791	1.88439238	0.46678028	151.647977	351.586785	4.382763	1.00479517	2.586769
02/07/1916	347.809106	1.88255913	0.46561595	152.327916	351.208077	4.391760	1.00600958	2.582995
02/14/1945	75.311856	1.88021819	0.46581774	152.805653	350.853741	4.401606	1.00437921	2.578179
02/22/1974	164.586252	1.88186014	0.46511802	153.227260	350.591455	4.400532	1.00657308	2.581556
03/02/2003	248.743450	1.88244077	0.46608684	153.920934	350.236982	4.421251	1.00505991	2.582751
03/09/2032	325.999723	1.88490114	0.46643107	154.407235	349.937423	4.431187	1.00572468	2.587816
03/17/2061	39.779271	1.88689115	0.46665577	155.018955	349.665250	4.432359	1.00636251	2.591916
03/25/2090	114.864891	1.88471773	0.46635578	155.478403	349.358422	4.436433	1.00576873	2.587439
04/03/2119	191.687368	1.88298061	0.46535021	156.199565	348.950358	4.448927	1.00673519	2.583862
04/10/2148	271.429839	1.88623436	0.46630946	156.684351	348.676314	4.450472	1.00666543	2.590563
04/18/2177	345.029118	1.88595191	0.46529795	157.220267	348.402613	4.447181	1.00842236	2.589981

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