Tag Archive


amateur astronomy awk bash be b[e] supergiant cartoon conference convert exoplanet fedora figaro fits fun history iraf jupiter latex linux magellanic clouds massive star matplotlib meteor mypaper ondrejov observatory optical paper peblo photo photometry planet pro-am pyraf python scisoft skinakas observatory small magellanic cloud smc spectroscopy starlink talk theli ubuntu university of crete video x-ray

Useful astronomical numbers

Just some useful numbers and units to remember and to have an easy access to! [last updated: 29 Dec 2011] >> Distance 1 AU = 150 x 106 km 1 pc = 3.09 × 1013 km = 206260 AU = 3.26 ly 1 ly = 9.4 x 1012 km = 64 x 103 = 0.31 […]