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Makemake moon Hubble image with legend (cropped).jpg
Makemake an its muin, as seen bi the Hubble Space Telescope
Discovered bi
Discovery dateMairch 31, 2005
MPC designation(136472) Makemake
Named after
2005 FY9
Dwarf planet
Orbital chairactereestics[2]
Epoch JD 2457000.5 (9 December 2014)
Aphelion52.840 AU
Perihelion38.590 AU
45.715 AU
309.09 yr (112,897 d)
4.419 km/s
Kent satellites1
Pheesical chairacteristics
  • (1434+48
    ) × (1420+18
  • (1502±45) × (1430±9) km[4]
Mean radius
  • 715+19
  • 739±17 km[4]
(6.9±0.3)×106 km2[c][5]
Vollum(1.7±0.1)×109 km3[c][6]
Mass< 4.4 × 1021 kg
Mean density
1.4–3.2 g/cm3[3] <3.05 g/cm3
7.771±0.003 h[7]
Temperatur32–36 K (single-terrain model)
40–44 K (twa-terrain model)[4]
Spectral teep
B−V=0.83, V−R=0.5[8]
17.0 (opposeetion)[9][10]

Makemake (meenor-planet designation 136472 Makemake) is a dwarf planet an aiblins the lairgest Kuiper belt object (KBO) in the clessical population,[a] with a diameter approximately two thirds that of Pluto.[15][16] Makemake haes ane kent satellite, S/2015 (136472) 1.[17] Makemake’s extremely law average temperatur, aboot 30 K (−243.2 °C), means its surface is covered wi methane, ethane, an possibly nitrogen ices.[12]

Notes[eedit | eedit soorce]

  1. a b Astronomers Mike Brown, David Jewitt an Marc Buie clwssify Makemake as a near scattered object but the Minor Planet Center, frae which Wikipaedia draws maist o its defineetions for the trans-Neptunian population, places it amang the main Kuiper belt population.[11][12][13][14]
  2. Calculatit uisin (a−b)/a an the dimensions frae [4]
  3. a b Calculatit uisin the dimensions frae [4] assumin an oblate spheroid.

References[eedit | eedit soorce]

  1. "MPEC 2009-P26 :Distant Minor Planets (2009 AUG. 17.0 TT)". IAU Minor Planet Center. 7 August 2009. Retrieved 28 August 2009.
  2. a b "JPL Small-Body Database Browser: 136472 Makemake (2005 FY9)". NASA Jet Propulsion Laboratory (2014-07-08 last obs). Retrieved 27 August 2015.
  3. a b c d M.E. Brown (2013). "On the size, shape, and density of dwarf planet Makemake". The Astrophysical Journal Letters. 767: L7(5pp). arXiv:1304.1041v1. Bibcode:2013ApJ...767L...7B. doi:10.1088/2041-8205/767/1/L7.
  4. a b c d e Ortiz, J. L.; Sicardy, B.; Braga-Ribas, F.; Alvarez-Candal, A.; Lellouch, E.; Duffard, R.; Pinilla-Alonso, N.; Ivanov, V. D.; Littlefair, S. P.; Camargo, J. I. B.; Assafin, M.; Unda-Sanzana, E.; Jehin, E.; Morales, N.; Tancredi, G.; Gil-Hutton, R.; De La Cueva, I.; Colque, J. P.; Da Silva Neto, D. N.; Manfroid, J.; Thirouin, A.; Gutiérrez, P. J.; Lecacheux, J.; Gillon, M.; Maury, A.; Colas, F.; Licandro, J.; Mueller, T.; Jacques, C.; Weaver, D. (2012). "Albedo and atmospheric constraints of dwarf planet Makemake from a stellar occultation". Nature. 491 (7425): 566–569. Bibcode:2012Natur.491..566O. doi:10.1038/nature11597. PMID 23172214. (ESO 21 November 2012 press release: Dwarf Planet Makemake Lacks Atmosphere)
  5. "surface ellipsoid 751x751x715 – Wolfram-Alpha".
  6. "volume ellipsoid 751x751x715 – Wolfram-Alpha".
  7. A. N. Heinze and Daniel deLahunta, The rotation period and light-curve amplitude of Kuiper belt dwarf planet 136472 Makemake (2005 FY9), The Astronomical Journal 138 (2009), pp. 428–438. doi:10.1088/0004-6256/138/2/428
  8. Snodgrass, C.; Carry, B.; Dumas, C.; Hainaut, O. (Februar 2010). "Characterisation of candidate members of (136108) Haumea's family". Astronomy and Astrophysics. 511: A72. arXiv:0912.3171. Bibcode:2010A&A...511A..72S. doi:10.1051/0004-6361/200913031.CS1 maint: ref=harv (link)
  9. "AstDys (136472) Makemake Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 30 December 2015.
  10. "Asteroid 136472 Makemake (2005 FY9)". HORIZONS Web-Interface. JPL Solar System Dynamics. Retrieved 30 December 2015.
  11. Marc W. Buie (5 Apryle 2008). "Orbit Fit and Astrometric record for 136472". SwRI (Space Science Department). Retrieved 13 Julie 2008.
  12. a b 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. Bibcode:2007AJ....133..284B. doi:10.1086/509734. Cite uses deprecated parameter |last-author-amp= (help)
  13. Audrey Delsanti; David Jewitt. "The Solar System Beyond The Planets" (PDF). University of Hawaii. Retrieved 3 August 2008.
  14. "List Of Transneptunian Objects". Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 3 August 2008.
  15. 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. Bibcode:2010A&A...518L.148L. doi:10.1051/0004-6361/201014701.
  16. International Astronomical Union (19 Julie 2008). "Fourth dwarf planet named Makemake" (Press release). International Astronomical Union (News Release – IAU0806). Retrieved 20 Julie 2008.
  17. HubbleSite (26 Apryle 2016). "Hubble Discovers Moon Orbiting the Dwarf Planet Makemake" (Press release). HubbleSite (News Release no. STScI-2016-18). Retrieved 26 Apryle 2016.