1998 WW31

1998 WW31 is a Transneptunisches object that was discovered on 18 November 1998 by the Deep Ecliptic Survey. It forms with the object S/2000 (1998 WW31 ) 1, the first discovered trans-Neptunian binary system since the discovery of Pluto and is the most famous and also the most symmetrical double system in the solar system.

The two bodies have a very similar size, the ratio of their diameter is 1:1.2, the ratio of their masses 1:1,74, assuming similar surfaces and densities. Their orbital period is about 570 days around each other, their distance from each other. Between about 4,000 and 40,000 km, where the semi-major axis is about 22,000 km The diameter of the two objects are located approximately between 100 and 150 km, assuming a density of 1 to 2 g / cc. Their common ground is 1/6000 of the system Pluto - Charon.

  • Kuiper belt asteroid
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