Aug. 9th, 2010

HR 7703

Aug. 9th, 2010 06:29 pm
jude_rook: Image of Andromeda Galaxy (Default)
HR 7703, a binary system, is 19.8 light years from us, in Sagittarius.  The A star is a K3V orange dwarf and its companion is a red dwarf.  Neither has any known planets.  The two stars average about the same distance from each other as Sol is from Pluto, but I don't know how far they are at their closest.

A's metallicity is around half of Sol’s.  No information on age that I could find.  ETA: a recent study suggests an age of 7.9 billion years.

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