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Discovery
of Asteroids
-
Gap
in planets between Mars and Jupiter
-
Missing
planet?
-
No,
asteroids
-
In
late 1700's, search for planet
-
German
"Celestial Police"
-
Sicilian
Giuseppe Piazzi beat them to it
-
Had
been looking at stars
-
saw
one move over the course of a few days
-
Called
it Ceres after patron goddess of Sicily
-
Ceres
is the largest asteroid but not the missing planet
-
minor
planet
-
P =
4.6 years
-
a =
2.77 AU
-
r =
918 km
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