Asteroid General Data

1998 SS₄

General information

Preliminary designation	1998 SS₄
Group	Amor
Absolute magnitude	21.75
Approximate diameter (m)	120
Approximate mass (kg)	3.06·10⁹
Number of observations	36
Arc length (days)	24

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	60.674034
a – orbit major semiaxis (astronomical units)	2.27328000
e – orbit eccentricity	0.51020000
ω – orbit ascending node-perihelion angle (degrees)	174.728160
Ω – longitude of orbit ascending node (degrees)	180.691127
i – orbit inclination to the ecliptic plane (degrees)	9.592683

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	157.070193	2.27035151	0.51251495	171.194750	182.585405	9.375466	1.10676242	3.420899
01/21/1858	328.544208	2.27044463	0.51254264	171.704253	182.306238	9.412529	1.10674494	3.421110
01/29/1887	141.460487	2.27033917	0.51346498	172.177544	182.016810	9.458044	1.10459952	3.420871
02/07/1916	313.127853	2.26998856	0.51288968	172.759348	181.722059	9.492421	1.10573484	3.420079
02/14/1945	125.908637	2.27165296	0.51185679	173.304666	181.463135	9.524588	1.10889197	3.423841
02/22/1974	296.973141	2.27162406	0.51021037	173.909201	181.197935	9.543560	1.11261791	3.423776
03/02/2003	106.434155	2.27522814	0.51008928	174.411405	180.887454	9.568382	1.11465866	3.431927
03/09/2032	275.989566	2.27031705	0.51244887	175.021032	180.594706	9.635573	1.10689563	3.420821
03/17/2061	88.038249	2.27032056	0.51242777	175.577310	180.318847	9.668954	1.10694526	3.420829
03/25/2090	261.252576	2.27120656	0.51250316	176.013389	180.073786	9.699999	1.10720602	3.422832
04/03/2119	72.030227	2.27061039	0.51236546	176.587568	179.800923	9.726482	1.10722805	3.421484
04/10/2148	242.506458	2.27389683	0.50959945	177.138359	179.553382	9.737396	1.11512026	3.428915
04/18/2177	53.575807	2.27169988	0.50995618	177.566405	179.282070	9.756350	1.11323248	3.423947

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