I know is out of topic, and ok to me if it has to be tranfered to another place of forum, but ...
And, now, worse to me !
Sigma Orionis seems to be a cluster, with numerous low mass stars, brown dwarf, with mass only a few times that Jupiter.
http://stars.astro.illinois.edu/sow/sigmaori.html
Or
Herschel describes as two groups of 3 stars. Barlow, as two groups of 4 stars, adding two little stars to each group of Herschel.
Main stars:
component A, mag 4 with a a little mag 11 star
component B, mag 8
Note: It seems my photo shows these 3 stars.
component C, mag 7
component D, mag 8,5 with a little mag 12 ( more distant from A)
Note: My photo shows two stars with same magnitude, side by side, and near other star (what are their names ?).
component E, mag 9
http://www.cosmovisions.com/ori.htm
