http://vizier.u-strasbg.fr/vizier/sed/?submitSimbad=Search&-c=11+38+20.00-63+22+22.0&-c.r=30&-c.u=arcsec&show_settings=1 https://en.wikipedia.org/wiki/O-type_star https://academic.oup.com/mnras/article/131/1/121/2604187