Asteroid General Data

2018 SM

General information

Preliminary designation	2018 SM
Group	Apollo
Absolute magnitude	29.41
Approximate diameter (m)	4
Approximate mass (kg)	7.76·10⁴
Number of observations	18
Arc length (days)	2

Approaches

Date	Object	r, AU	r, km
09/15/2018 10:33:36 PM	Earth	0.000286	42 803

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	138.878736
a – orbit major semiaxis (astronomical units)	1.78596236
e – orbit eccentricity	0.46761614
ω – orbit ascending node-perihelion angle (degrees)	145.987018
Ω – longitude of orbit ascending node (degrees)	172.778317
i – orbit inclination to the ecliptic plane (degrees)	8.972714

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	248.314551	2.03062185	0.52626141	144.416494	176.052518	6.317524	0.96198393	2.893638
01/21/1858	260.449535	2.02893595	0.52645989	145.253134	175.503198	6.379973	0.96078255	2.890035
01/29/1887	261.225735	2.03532524	0.53080578	146.099341	174.939911	6.434886	0.95496283	2.903697
02/07/1916	260.426813	2.03510782	0.53031353	146.434245	174.610571	6.455329	0.95586261	2.903232
02/14/1945	258.387362	2.03709303	0.52728621	146.977476	174.216262	6.493013	0.96296198	2.907481
02/22/1974	251.246863	2.03738215	0.52695296	147.811391	173.770047	6.542129	0.96377759	2.908100
03/02/2003	242.837182	2.03680341	0.52970598	148.851781	173.122417	6.610376	0.95789646	2.906861
03/09/2032	245.012374	1.78495975	0.46761498	146.108064	172.710297	8.982425	0.95028583	2.384752
03/17/2061	302.380968	1.78669750	0.46782800	146.524305	172.464145	9.004023	0.95083039	2.388236
03/25/2090	357.005853	1.78667113	0.46692971	147.017575	172.173010	9.035542	0.95242130	2.388183
04/03/2119	22.858032	1.79580814	0.46866477	147.615201	171.924797	9.023487	0.95417613	2.406526
04/10/2148	44.490118	1.79526465	0.46834132	147.998211	171.647576	9.048376	0.95446803	2.405433
04/18/2177	69.772358	1.79382851	0.46855201	148.341839	171.344653	9.078766	0.95332656	2.402548

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