Geography 2090A/B Lecture Notes - Lecture 10: Clyde Tombaugh, Highly Elliptical Orbit, Dwarf Planet
23 Oct 2018
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Dwarf planet: eris, pluto, haumea (found in hawaii), makemake (found in hawaii), ceres. Ceres is in the inner solar system is now considered to be a minor planet, instead of an asteroid. Average temperature: -105 c very cold: discovered: giuseppe piazzi (1801, orbital period (year): 4. 6 earth years, moons: none no moons, distance from sun: 2. 7 au, orbital eccentricity: 0. 11, orbital inclination: 9. 6 . Atmosphere: thin (potentially) think about it as a small mercury. Objects need 2 of the characteristics of a planet in order for it to be a true planet, therefore, these were dwarf planets. Pluto did not have the dominant orbit and same with eris. Large crater with some ice showing, this is interesting because the ice was reflecting light at a large distance may have minerals in it that makes it more shiny than normal ice: mapped with hills, craters, etc.
