Back to Home

General Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Misc. Topics | Post
Login

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Castor (Alpha Geminium) Is 3 Sets Of Double Stars:

Forum List | Follow Ups | Post Message | Back to Thread Topics
Posted by Koichi Ito/">Koichi Ito on April 10, 1999 13:37:12 UTC

Castor is seen as a triple star, but actually it is a three sets of double stars. Since it is the second brightest star in constellation Gemini, however it is label as Alpha Geminium. This star system consist of two sets of white main sequence stars and one set of orange main sequence star. The whole system consists of six stars, but we are not sure there is any planet orbiting one of them. Two sets of white stars orbit around every 180 years and the orange star orbit the white stars perhaps every 100,000 years.

Follow Ups:

Login to Post
Additional Information
Google
 
Web www.astronomy.net
DayNightLine
About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
Unless otherwise specified, web site content Copyright 1994-2020 John Huggins All Rights Reserved
Forum posts are Copyright their authors as specified in the heading above the post.
"dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
are trademarks of John Huggins