PROFILEDwarf planet
A rapid rotation
Haumea rotates in a few hours. Measurements indicate an elongated shape and a ring; two moons are known.
Studying a distant object
Astronomers analyse reflected light and, when possible, observe Haumea passing in front of a star. These events help constrain its size, shape and surroundings.
FACTS TO EXPLORE
ROTATION PERIODabout 4 hours
LOCATIONKuiper Belt
Values are rounded. AU means astronomical unit. NASA source ↗