GCVS	General Catalog of the variable stars	Russia
	VSNET	Variable star network	Japan
	AAVSO	American Association of variable star observers	USA
	IBVS	Information Bulletin on variable stars	Hungary
	NASA	Nasa's home page	USA
	NASA ADC	Nasa Astronomical data center	USA
	Astronomy	Astronomy Magazine	USA
	Sky Pub.	Sky Publishing	USA
	Astropc	Patrick Chevalleys Astronomy Perograms	France
	Satallite Tracking	Human made staellite tracking page	Usa
	Tubitak	Türkiye Bilimsel ve teknolojik araştırma kurumu	Turkey
	Space Resources	Astronomy Resources	USA
	ESA	European space agency	Italy
	Meduza	Czech Variable star association	Czech Rep.
	AVE	Spanish Variable star association	Spain
	Autoplot	Lew's MS excel software	USA
	AFOEV	France variable star organization	France
	BAAVS	BAA's variable star section	United Kingdom
	IAU	International Astronomical Union	USA
	IMO	International Meteor organization	USA
	Regulus	Amateour Astronomy Newsletter	USA
	USNO	United States Naval Observatory	USA
	Fourmilab	Online sky charts	Switzserland