Open cluster M39 in
A map of the star field. Magnitudes are given without
a decimal point, e.g. 67 is to be interpreted as magnitude 6.7.
Visible from a reasonably dark area, but nothing worth writing home about.
Data (Janes, Duke, and Lynga, 1987) RA 21 32 dec 48 26 total V magnitude 4.6 NGC number 7092 Trumpler class III 2 m angular diameter 29' distance 290 pc age (Myr) 200 integrated B-V .06 observed stars 28 earliest sp. class A0 brightest star 7.0
(c) Copyright 1998 Benjamin Crowell. All right reserved.
Photos from the Digitized Sky Survey, stdatu.stsci.edu/dss/dss_form.html
Sky maps created by Your Sky, www.fourmilab.com