If the parallax of a star is measured to be 0.1 seconds of arc, its distance is
a) 10 astronomical units
b) 10 parsecs
c) 1 parsec
d) 0.1 parsec
e) 0.1 astronomical units
Answer: b) 10 parsecs
d(parsec)= 1/ (theta)(arc seconds)
If the parallax of a star is measured to be 0.1 seconds of arc, its distance is
a) 10 astronomical units
b) 10 parsecs
c) 1 parsec
d) 0.1 parsec
e) 0.1 astronomical units
Answer: b) 10 parsecs
d(parsec)= 1/ (theta)(arc seconds)