Asteroid General Data

2018 EM₄

General information

Preliminary designation	2018 EM₄
Group	Apollo
Absolute magnitude	25.23
Approximate diameter (m)	24
Approximate mass (kg)	2.50·10⁷
Number of observations	42
Arc length (days)	23

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	275.016564
a – orbit major semiaxis (astronomical units)	1.28139300
e – orbit eccentricity	0.27145100
ω – orbit ascending node-perihelion angle (degrees)	227.759165
Ω – longitude of orbit ascending node (degrees)	6.394671
i – orbit inclination to the ecliptic plane (degrees)	2.884492

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	151.792851	1.28311958	0.27194897	223.862666	10.154453	2.935800	0.93417652	1.453454
01/21/1858	146.481939	1.28272445	0.27185678	224.768874	9.464720	2.934852	0.93400711	1.452783
01/29/1887	133.327493	1.28460119	0.27261216	224.818773	9.053242	2.920174	0.93440329	1.455972
02/07/1916	108.182527	1.28452563	0.27257259	225.290257	8.404475	2.912118	0.93439916	1.455844
02/14/1945	83.522226	1.27662811	0.26950038	226.923711	7.850994	2.922631	0.93257636	1.442438
02/22/1974	128.626178	1.27614873	0.26936843	227.280188	7.643207	2.919116	0.93239455	1.441626
03/02/2003	171.542908	1.27658652	0.26959202	228.114157	6.736056	2.915292	0.93242899	1.442368
03/09/2032	193.676402	1.28244218	0.27184426	228.055842	6.179890	2.885874	0.93381764	1.452303
03/17/2061	190.056529	1.28238994	0.27191369	228.415205	5.792096	2.876955	0.93369056	1.452214
03/25/2090	229.515161	1.27636928	0.26949716	229.397565	5.508312	2.873583	0.93239139	1.442000
04/03/2119	268.656439	1.27731907	0.26994789	230.561799	4.414769	2.877513	0.93250948	1.443609
04/10/2148	306.676281	1.27719907	0.26984701	231.116974	3.674960	2.871639	0.93255072	1.443406
04/18/2177	341.879704	1.27885588	0.27070279	231.193480	3.278338	2.857905	0.93266602	1.446216

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