Asteroid General Data

2018 SD₂

General information

Preliminary designation	2018 SD₂
Group	Aten
Absolute magnitude	28.39
Approximate diameter (m)	6
Approximate mass (kg)	3.18·10⁵
Number of observations	18
Arc length (days)	17

Approaches

Date	Object	r, AU	r, km
09/25/2018 06:14:24 AM	Earth	0.000588	87 889
09/21/2081 08:32:38 PM	Moon	0.000460	68 812

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	191.771444
a – orbit major semiaxis (astronomical units)	0.93027476
e – orbit eccentricity	0.11126490
ω – orbit ascending node-perihelion angle (degrees)	138.207331
Ω – longitude of orbit ascending node (degrees)	1.768345
i – orbit inclination to the ecliptic plane (degrees)	3.675259

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	328.485806	0.88265589	0.15926924	217.420980	286.290111	0.188014	0.74207595	0.829254
01/21/1858	266.464043	0.88949914	0.15506079	227.638109	277.337287	0.162601	0.75157269	0.838917
01/29/1887	54.961654	0.89199846	0.15254540	287.593163	223.379398	0.106983	0.75592820	0.842455
02/07/1916	207.581227	0.89297703	0.15200351	301.909610	207.311904	0.129045	0.75724138	0.843842
02/14/1945	259.909701	0.89899527	0.14879902	311.595609	193.585748	0.196651	0.76522566	0.852387
02/22/1974	148.637847	0.91010713	0.14210868	323.127551	180.086715	0.221747	0.78077301	0.868239
03/02/2003	268.482494	0.91082423	0.14169441	330.571949	172.446453	0.244679	0.78176553	0.869266
03/09/2032	229.677332	0.93002999	0.11174098	138.224919	1.710993	3.674564	0.82610753	0.896904
03/17/2061	332.724135	0.93367361	0.10855809	138.379544	359.558761	3.731976	0.83231579	0.902180
03/25/2090	203.132300	0.89978291	0.14440763	150.162858	356.373019	1.956042	0.76984739	0.853507
04/03/2119	192.241188	0.90318899	0.14294831	153.004868	353.951385	1.986637	0.77407966	0.858358
04/10/2148	106.832827	0.90398456	0.14090694	153.779206	353.250452	1.984912	0.77660686	0.859493
04/18/2177	54.053442	0.90057005	0.14445697	155.166654	352.704707	1.963999	0.77047643	0.854627

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