An article published in “The Astrophysical Journal Letters” describes the discovery of a moon of the 2007 OR10 transnettunian object. It’s most likely a dwarf planet which is still little known because right now it’s distant from the Sun about 87 times the Earth. A team of astronomers led by Csaba Kiss of the Konkoly Observatory in Budapest analyzed images of the Hubble Space Telescope’s archive finding two images of 2007 OR10’s moon.