Makemake
Makemake is the second furthest dwarf planet to the Sun and is the only one of the outer four dwarf planet to not have any moons.

Makemake Dwarf Planet Profile

Mass: 3,000,000,000,000 billion kg (0.0005 x Earth)
Equatorial Diameter: 1,434 km
Polar Diameter: 1,422 km
Known Satellites: none
Notable Satellites: none
Orbit Distance: 6,850,000,000 km (45.79 AU)
Orbit Period: 309.88 Earth years
Surface Temperature: -239°C
Discovery Date: March 31st 2005
Discovered By: Michael E. Brown, Chad Trujillo & David Rabinowitz

Size of Makemake Compared to the Earth

Size of Makemake

Facts about the Dwarf Planet Makemake

Makemake has no moons:
Makemake is the largest of the Kuiper belt objects and the only one without satellites. Although we know its diameter to be about 2/3 that of Pluto, its mass can merely be estimated in the absence of nearby objects.

Makemake lacks its expected atmosphere:
Astronomers thought Makemake would have developed an atmosphere similar to Pluto’s, its chance passing in front of a bright star in 2011 revealed it mostly lacks a gas envelope. If present, Makemake’s atmosphere would likley be methane and nitrogen-based.