![]() Makemake as seen by the Hubble Space Telescope | |
Discovery | |
---|---|
Discovered by | Michael E. Brown, Chad Trujillo, David Rabinowitz |
Discovery date | March 31, 2005 |
Designations | |
Designation | (136472) Makemake |
2005 FY9 | |
dwarf planet, plutoid, TNO (cubewano)Cite error: The <ref> tag has too many names (see the help page). | |
Orbital characteristics[1][2] | |
Epoch January 28, 1955 (JD 2 435 135.5) | |
Aphelion | 7,939.7 Gm (53.074 AU) |
Perihelion | 5,760.8 Gm (38.509 AU) |
6,850.3 Gm (45.791 AU) | |
Eccentricity | 0.159 |
113,183 d (309.88 a) | |
Average orbital speed | 4.419 km/s |
85.13° | |
Inclination | 28.96° |
79.382° | |
298.41° | |
Physical characteristics | |
Dimensions | 1,300–1,900 km |
750+200 −100 km[3] | |
~7,000,000 km² | |
Volume | ~1.8 × 109 km³ |
Mass | ~4 × 1021 kg |
Mean density | ~2 g/cm³ (assumed) |
~0.47 m/s² | |
~0.84 km/s | |
unknown | |
unknown | |
Albedo | 78.2+10.3 −8.6 (geometric)[3] |
Temperature | 30–35 K [d](assuming the same albedo) |
16.7 (opposition)[4][5] | |
-0.48[2] | |
- ^ Cite error: The named reference
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jpldata
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Stansberry 2007
was invoked but never defined (see the help page). - ^ "AstDys (136472) Makemake Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2009-03-19.
- ^ Cite error: The named reference
Horizons
was invoked but never defined (see the help page).