Scale of the Solar System

  Semimajor axis in A.U. Actual Diameter in km # of steps if Mercury were one step from sun Scale diameter if earth were 12" globe Scale distance if earth were 12" globe Scale diameter if earth were 6 foot globe Scale distance from Sun if Earth were 6 foot globe Scale distance from 6' Earth Globe in Abrams planetarium lobby Location from Abrams' Earth globe in lobby
Sun - 1,392,000 - 109 feet - 655 feet - 13.3 miles Dimondale, MI
Mercury 0.387 4879 1 4½ inches ¾ miles- 2¼ feet 5 miles 8.3 to 18 miles -
Venus 0.723 12,104 2 11½ inches 1½ miles 9.6 miles 3.7 to 23 miles State Capitol Building
Earth 1 12,756 3 1 foot 2¼ miles 6 feet 13.3 miles 0 Planetarium Lobby
Mars 1.524 6794 4 6½ inches 3½ miles 3¼ feet 21.3 miles 8 to 35 miles Williamston, MI
Asteroids - - - - - - - - -
Jupiter 5.203 142,980 13 11¼ feet 11½ miles 67¼ feet 69.3 miles 56 to 83 miles Detroit
Saturn 9.555 120,540 25 9½ feet 21¼ miles 56¾ feet 127 miles 114 to 140 miles Chicago
Uranus 19.218 51,120 50 4 feet 42¾ miles 24 feet 256 miles 243 to 270 miles Pittsburgh
Neptune 30.11 49,530 78 4 feet 67 miles 23¼ feet 400 miles 387 to 413 miles Washington DC
Pluto 40 2300 102 2 inches 88 miles 1 foot 527 miles - Cape Cod
Eris 68 2400 - 2¼ inches 153 miles 1¼ feet 900 miles - -
Sedna 525 ~2200 - - 1181 miles - 7000 miles - Japan
Alpha Centauri 271,936 A.U. - - - 612,000 miles - 3,616,757 miles - 145 times around the world or to the moon and back 8 times

Map of inner solar system to scale to the Earth globe in Abrams Planetarium lobby.

Map of outer solar system to scale to the Earth globe in Abrams Planetarium lobby.


Directions to Azimuth converter wheel: