Asteroid General Data

1997 MW₁ (136818 Selqet)

General information

Preliminary designation	1997 MW₁
Name	Selqet
Number	136818
Group	Aten
Absolute magnitude	18.98
Approximate diameter (m)	420
Approximate mass (kg)	1.41·10¹¹
Number of observations	648
Arc length (days)	7982

Approaches

No approaches found

Orbit initial data

Date of initial data	09/17/2026
M – mean anomaly (degrees)	235.090907
a – orbit major semiaxis (astronomical units)	0.93749200
e – orbit eccentricity	0.34629000
ω – orbit ascending node-perihelion angle (degrees)	203.834457
Ω – longitude of orbit ascending node (degrees)	259.905536
i – orbit inclination to the ecliptic plane (degrees)	12.781288

Orbital evolution

Date	M	a	e	ω	Ω	i	q	P
01/13/1829	324.488002	0.93769077	0.34693141	202.747378	261.364198	12.741221	0.61237638	0.908009
01/21/1858	313.462067	0.93741512	0.34675854	202.880118	261.158165	12.749204	0.61235842	0.907608
01/29/1887	302.348644	0.93755952	0.34668949	203.068347	260.930491	12.750305	0.61251749	0.907818
02/07/1916	291.287115	0.93748090	0.34659134	203.209818	260.729327	12.757597	0.61255813	0.907704
02/14/1945	280.172891	0.93748307	0.34653980	203.379722	260.505452	12.760004	0.61260787	0.907707
02/22/1974	268.948134	0.93756080	0.34650281	203.547532	260.300079	12.768432	0.61269335	0.907820
03/02/2003	258.185907	0.93746568	0.34644420	203.683059	260.081974	12.770002	0.61268613	0.907682
03/09/2032	246.502137	0.93766010	0.34642982	203.863238	259.866807	12.779971	0.61282668	0.907964
03/17/2061	236.261018	0.93745590	0.34632156	203.987025	259.655999	12.780964	0.61279472	0.907668
03/25/2090	224.271297	0.93760192	0.34620774	204.163979	259.420849	12.793066	0.61299688	0.907880
04/03/2119	214.265383	0.93739812	0.34612846	204.297758	259.226966	12.792777	0.61293796	0.907584
04/10/2148	202.443084	0.93755728	0.34597496	204.486814	258.991049	12.802590	0.61318594	0.907815
04/18/2177	192.028096	0.93742024	0.34594596	204.612029	258.798451	12.803798	0.61312349	0.907616

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