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Makemake (minor-planet designation 136472 Makemake) is a KBO (Kuiper belt object) and perhaps the largest object[lower-alpha 1] in the classical population,[lower-alpha 2] with a diameter approximately two thirds that of Pluto.[5][6] Makemake has one known satellite, S/2015 (136472) 1.[7] Makemake's extremely low average temperature, about 30 K (−243.2 °C), means its surface is covered with methane, ethane, and possibly nitrogen ices.[2]

Notes Edit

  1. The Kuiper Belt is a ring of bodies beyond Neptune.
  2. Astronomers Mike Brown, David Jewitt and Marc Buie classify Makemake as a near scattered object but the Minor Planet Center, from which Wikipedia draws most of its definitions for the trans-Neptunian population, places it among the main Kuiper belt population.[1][2][3][4]

ReferencesEdit

  1. Marc W. Buie (2008-04-05). "Orbit Fit and Astrometric record for 136472". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/136472.html. Retrieved 2008-07-13. 
  2. 2.0 2.1 Mike Brown; K. M. Barksume; G. L. Blake; E. L. Schaller et al. (2007). "Methane and Ethane on the Bright Kuiper Belt Object 2005 FY9". The Astronomical Journal 133 (1): 284–289. doi:10.1086/509734. Bibcode2007AJ....133..284B. 
  3. Audrey Delsanti; David Jewitt. "The Solar System Beyond The Planets". University of Hawaii. http://www.ifa.hawaii.edu/publications/preprints/06preprints/Delsanti_06-009.pdf. Retrieved 2008-08-03. 
  4. "List Of Transneptunian Objects". Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. http://www.minorplanetcenter.org/iau/lists/TNOs.html. Retrieved 2008-08-03. 
  5. T.L. Lim; J. Stansberry; T.G. Müller (2010). ""TNOs are Cool": A survey of the trans-Neptunian region III. Thermophysical properties of 90482 Orcus and 136472 Makemake". Astronomy and Astrophysics 518: L148. doi:10.1051/0004-6361/201014701. Bibcode2010A&A...518L.148L. 
  6. International Astronomical Union (News Release – IAU0806) (2008-07-19). "Fourth dwarf planet named Makemake". Press release. http://www.iau.org/public_press/news/release/iau0806/. Retrieved 2008-07-20. 
  7. HubbleSite (News Release no. STScI-2016-18) (2016-04-26). "Hubble Discovers Moon Orbiting the Dwarf Planet Makemake". Press release. http://hubblesite.org/newscenter/archive/releases/2016/18/full/. Retrieved 2016-04-26.