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Makemake [e] (minor-planet designation: 136472 Makemake) is a dwarf planet and the largest of what is known as the classical population of Kuiper belt objects, [b] with a diameter approximately that of Saturn's moon Iapetus, or 60% that of Pluto. [24] [25] It has one known satellite. [26]
For the giant planets, the "radius" is defined as the distance from the center at which the atmosphere reaches 1 bar of atmospheric pressure. [ 11 ] Because Sedna and 2002 MS 4 have no known moons, directly determining their mass is impossible without sending a probe (estimated to be from 1.7x10 21 to 6.1×10 21 kg for Sedna [ 12 ] ).
The number of dwarf planets in the Solar System is unknown. Estimates have run as high as 200 in the Kuiper belt [1] and over 10,000 in the region beyond. [2] However, consideration of the surprisingly low densities of many large trans-Neptunian objects, as well as spectroscopic analysis of their surfaces, suggests that the number of dwarf planets may be much lower, perhaps only nine among ...
Precovery image of 2005 RM 43 taken by the Siding Spring Observatory in 1976 [9]. 2005 RM 43 is considered likely to be a dwarf planet by both Brown and Tancredi. [8] [10] Based on an absolute magnitude of 4.4, the body's diameter could be anywhere in the range of 350 to 800 kilometres (km), depending on its albedo, the surface reflectivity of the object. [11]
The newly-discovered thick atmosphere gives the planets another thing in common. ... Are we about to find the evasive Planet 9? GJ 1132b orbits around the dwarf star GJ 1132 about 39 light-years ...
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As far as anyone can tell, Image:Makemake precovery.jpg is the only photograph of makemake on the internet at all. Regardless, any images not taken by NASA would be copyrighted by the observatory from which they were taken, and it doesn't appear that NASA has imaged this planet dwarf planet yet (as strange as that seems).
The Minor Planet Center (MPC) classifies it as a cubewano. [3] But since this object has an inclination of 19.3°, the Deep Ecliptic Survey (DES) classifies it as scattered-extended. [4] It has been observed 119 times over thirteen oppositions, with precovery images back to 1954. [2]