Может быть, кто-то найдет это полезным:
import ephem
import ephem.stars
global stars
stars = {}
obs = ephem.Observer()
obs.long = ephem.degrees('15.17')
obs.lat = ephem.degrees('44.4')
obs.elevation = 200
obs.date = "2010/09/12"
for star in ephem.stars.db.split("\n"):
name = star.split(",")[0]
if name=="Sirrah":
starz = ephem.FixedBody(star.split(",")[2][:-7], star.split(",")[3][:-7])
starz = ephem.star(name)
starz.compute(obs)
print name+": "+str(starz.alt)+" "+str(starz.az)
break