By: Steve Goldberg
This asterism is located in Virgo. Starting with Spica, locate star Porrima Gamma γ VIRGO. This star is the “anchor point” for the semi-circle of stars in Virgo.
Just above a line from Porrima to Zaniah Eta η VIRGO, Brosch 1 can be located.
Brosch 1 is a square or diamond, depending on how it appears in your eyepiece. The object first appears as 4 stars. But looking closer, one of the stars is a double. See if you can split that double. Another name for this asterism is the Virgo Diamond, which is very descriptive.
Brosch 1 is named for Noah Brosch, an Israeli astronomer still doing research today. Here is Wiki info on Brosch.