Calculation of the angle between two stars

by Matt Oltersdorf 2003 10 26 1325 UTC
back to Java for Astronomy

Write the Equatorial Coordinates of the first star:
  Right Ascension (in hours and decimal part):
  Declination   (in º and decimal part):      

Write the Equatorial Coordinates of the second star:
  Right Ascension (in º and decimal part):    
  Declination    (in º and decimal part):     


Angle in degrees:

For example:     for the conjunction of Mars and Jupiter on the 21st of January of 1998 to 1h of U.T. input for Mars RA =21.9425 (hours) and D = -13.6588 and for Jupiter RA =21.9530 (hours) and D = -13.4047 and you will get that the angle between the planets is: 0.29667º=17'48"