Halfway Around the World for 5 Minutes of data . Learning about the atmosphere of Pluto. Jeff Regester Greensboro Day School. Outline. History of Pluto and Outer Solar System science Occultations New Horizons . Pluto’s Discovery. Discovered by accident, on purpose
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Learning about the atmosphere of Pluto
Jeff RegesterGreensboro Day School
Discovered by accident, on purpose
by Clyde Tombaugh, Lowell Observatory, 1930
Charon, discovered in 1978
by Jim Christie, USNO
MPluto = MMercury/20
Nix and Hydra, discovered in 2005 by Alan Stern et al, using HST
Jewitt & Luu
A comparison of the size of Sedna, the largest known KBO in 2004, to various planets and moons. (NACO Team, 8.2-meter VLT (Yepun), ESO, apod040827)
Dysnomia’s orbit P=16d MEris= 1.27 MPluto Houston, we have a problem!
goodbye “minor planets”
RESOLUTION 6AThe IAU further resolves:Pluto is a "dwarf planet" by the above definition and is recognized as the prototype of a new category of trans-Neptunian objects.
Position in shadow
Predicting Occultations Ain’t Easy!
July 13th, 2015