Open cluster NGC6231 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.
Data (Janes, Duke, and Lynga, 1987) RA 16 54 dec -41 49 total V magnitude 2.6 NGC number 6231 Trumpler class I 3 p angular diameter 14' distance 1900 pc age (Myr) 10 integrated B-V .23 observed stars 93 earliest sp. class O8 brightest star 6.0
(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