Asterisms – Greg’s “3” Asterism

By: Steve Goldberg  (Posted 3/18/2019)

Asterism: a grouping of stars that form a recognizable pattern.
Constellation: Leo
Right Ascension: 09h 38m 00.0s
Declination: +15° 17' 00"
Magnitude:  8 to 11
Size: 15’ (minutes)

This asterism is called “Greg’s 3” because it was discovered by Greg Parker. It is located inside a triangle with stars Regulas α Leo, Eta η Leo and the “center” star in Cancer, Delta δ.  



In this eyepiece view, you can see the bright stars that make up the asterism. The circle FOV is with an eyepiece giving 80x.





Here is the asterism with the “3” drawn in.


Here is an article from 2013 in “Earth Science Picture of the Day” publication. Read the article here.


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