Wikipedia

Makemake

Makemake (meenor-planet designation 136472 Makemake, seembol: 🝼)[11] 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.[16][17] Makemake haes ane kent satellite, S/2015 (136472) 1.[18] Makemake’s extremely law average temperatur, aboot 30 K (−243.2 °C), means its surface is covered wi methane, ethane, an possibly nitrogen ices.[13]

Makemake 🝼
Makemake an its muin, as seen bi the Hubble Space Telescope
Discovery
Discovered bi
Discovery dateMairch 31, 2005
Designations
MPC designation(136472) Makemake
Named after
Makemake
2005 FY9
Dwarf planet
cubewano[1]
scattered-near[a]
AdjectivesMakemakean
Orbital chairactereestics[2]
Epoch JD 2457000.5 (9 December 2014)
Aphelion52.840 AU
Perihelion38.590 AU
45.715 AU
Eccentricity0.15586
309.09 yr (112,897 d)
4.419 km/s
15
Inclination29.00685°
79.3659°
297.240°
Kent satellites1
Pheesical chairacteristics
Dimensions
  • (1434+48
    −18    ) × (1420+18
    −24     km)    [3]
  • (1502±45) × (1430±9) km[4]
Mean radius
  • 715+19
    −11     km    [3]
  • 739±17 km[4]
Flettenin0.05[b]
Surface area
(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]
Albedo0.81+0.03
−0.05[3]
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]
−0.3[2]

Notes

eedit
  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.[12][13][14][15]
  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
  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. ↑ JPL/NASA (22 Apryle 2015). "What is a Dwarf Planet?". Jet Propulsion Laboratory. Retrieved 19 Januar 2022.
  12. ↑ Marc W. Buie (5 Apryle 2008). "Orbit Fit and Astrometric record for 136472". SwRI (Space Science Department). Retrieved 13 Julie 2008.
  13. ↑ 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)
  14. ↑ Audrey Delsanti; David Jewitt. "The Solar System Beyond The Planets" (PDF). University of Hawaii. Retrieved 3 August 2008.
  15. ↑ "List Of Transneptunian Objects". Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 3 August 2008.
  16. ↑ 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.
  17. ↑ International Astronomical Union (19 Julie 2008). "Fourth dwarf planet named Makemake" (Press release). International Astronomical Union (News Release – IAU0806). Retrieved 20 Julie 2008.
  18. ↑ 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.
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