Quote:
Originally Posted by Robh
Just so there is no confusion ...
x Velorum and X Velorum are two different stars:
x Velorum or HIP 52154 is the double star.
X Velorum or HIP 48662 is a carbon star. Capitals (here X) usually reserved for variable stars.
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It actually gets a lot more confusing than this.
The Bayer designation for x Velorum (HIP 52154) (Dunlop 95) is "Chi" Velorum. That happened in 1603, which was when Chi (x) Velorum was given it's Bayer designation, as it is a naked eye star. The Greek letter "Chi" is expressed as "x" in lower case and "X" in upper case. However, we then have HIP 48662, which is designated as "X" Velorum, which is contradictory to the original Bayer designation for HIP 52154, in upper case. Of course HIP 48662, got it's designation of X Velorum, a few hundred years after the original.
Cheers
John B