Answer to Question #81717 in Astronomy | Astrophysics for Steven Rearden

Question

The siriometer is a rarely-used astronomical measure equal to 1 million astronomical units which is 1 million times the average distance between the Sun and Earth. This distance is equal to about 15.8 light years and is about twice the distance from Earth to the star Sirius. How many parsecs is it from our sun to dinner up which is 3228 light years away? 1 pc= 3.262 LY, 1 pc= 206,264.806 AU, 1 AU = 1.496 x 10^11 meters

Answer 1

D=3228 LY.
D=3228 LY (1 pc)/(3.262 LY)=989.6 pc.