Distance to nearby stars

1. Mar 22, 2004

MathematicalPhysics

Just a little question, using the formula d=1/(theta), d is the distance in pc and theta is the angle in arsecs. Is theta simply the parallax? or if not, can it be calculated from right ascention and declination?

Thanks, Matt.

2. Mar 22, 2004

Staff: Mentor

Its parallax.

3. Mar 23, 2004