Measuring Distances to Stars d = 1 / p If p is in arcsec and d is in parsecs A star with a parallax of 1 arcsec is 1 parsec distant lets define 1 parsec 206,265 A.U.
{"Image DocumentName": "Measuring Distances to Stars", "Image ImageDescription": "This is a right triangle. sin p = 1 AU/ d. if p << 1; sin p \uf0bb p. d = 1 AU/ p. convert p into arcsec. d = 206,265 AU/ p.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}