Angular Separation Between Two Stars

[ps2983]

I aim trying to do a problem where I have 2 Equatorial Coordinates, and I need to find the angular distance in between this two points. Thanks in advance.

 

[lightgrav]

Do you mean RA and dec?

If the stars are close to one another you can use Pythagoras.
declination is already in actual degrees;
Right Ascension must be converted from hours to degrees,
(15 deg/hr) cos(dec) , to compensate for meeting at the pole.

If the stars are far apart, you'll have to make a great circle
that passes through them both.