Dwarf Planets To Be A Planet Or Not
Dwarf Planets To Be A Planet, Or Not To
Physical Characteristics • 5 - Recognized Dwarf Planets – Ceres, Pluto, Haumea, Makemake, Eris • Classification Criteria – Directly orbits the Sun (not a satellite) – Relatively round in shape Ceres – Has not cleared its orbital path • Term applied to Solar System objects in 2006
Dwarf Planet Orbits • Ceres : 2. 77 AU • Orbital Period = 4. 60 years • Pluto : 39. 48 AU • Orbital Period = 248. 09 years • Haumea : 43. 13 AU • Orbital Period = 283. 28 years • Makemake : 45. 79 AU Pluto • Orbital Period = 309. 9 years • Eris : 67. 67 AU • Orbital Period = 557 years 1 AU = Distance to Earth from the Su
Surface and Atmosphere • Ceres • Diameter : 590 miles • Temperature Range : -106 ˚C to -34 ˚C • Pluto • Diameter : 1, 430 miles • Average Temperature : - 229 ˚C • Haumea • Diameter : 1, 218 x 943 miles • Average Temperature : - 223 ˚C • Makemake • Diameter : 882 miles • Average Temperature : – 239 ˚C • Eris • Diameter : 1, 445 miles • Average Temperature : -231 ˚C Haumea
Dwarf Planet Discovery • Ceres • Giuseppe Piazzi (January 1, 1801) • Pluto • Clyde Tombaugh (February 18, 1930) • Haumea • Mike Brown et al (December 28, 2004) • Makemake • Mike Brown, Chad Trujilo, David Rabinowitz (March 31, 2005) • Eris • Mike Brown, Chad Trujilo, David Rabinowitz (January 5,
Dwarf Planet Facts • 394 possible dwarf planets in the Solar System • All dwarf planets located in Kuiper Belt • Except Ceres (Asteroid Belt) • No dwarf planet has been visited by a space probe • 2015 : Dawn (Ceres) & New Horizons (Pluto) • Number of known natural satellites (moons) • Ceres : 0 • Pluto : 5 (Charon, Nix, Hydra, Kerberos, Styx) • Haumea : 2 (Hi’iaka, Namaka) • Makemake : 0 • Eris : 1 (Dysnomia) Eris
Dwarf Planets Video https: //www. youtube. com/watch? v=Cmwcl. ZQ LOaw
Literature Cited • http: //en, wikipedia. org/wiki/dwarfplanets • http: //www. solarviews. com/eng/dwarfplanets. htm • http: //nineplanets. org/dwarfplanets. htm • Our Universe • All About Dwarf Planets
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