Talk:Castor (star)
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[edit] Distance from Earth?
How far is Castor from Earth? - --Brasswatchman 23:56, July 31, 2005 (UTC)
- 51.5 ly distant according to Hipparcos.--Jyril 00:01, August 1, 2005 (UTC)
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- Great. Thanks. --Brasswatchman 05:41, August 2, 2005 (UTC)
I changed the spectral type of Castor Ab to unknown as it is not officially known to be M5 V. http://www.solstation.com/stars2/castor6.htm April 24, 2006.
[edit] Naming
Why is this star listed under its common name but Alpheratz is listed under Alpha Andromedae? AndrewRT - Talk 22:49, 20 August 2006 (UTC)
[edit] Error in separation of components
The A and B components of Castor are separated by 2" as of 2006, not 6".
