SOLAR SYSTEM

UNIVERSE

ASTEROIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which dwarf planet spins so fast it’s day is only 4 hours long?
A
Haumea
B
Eris
C
Makemake
D
Ceres
Explanation: 

Detailed explanation-1: -Haumea is roughly the same size as Pluto . It is one of the fastest rotating large objects in our solar system. The fast spin distorts Haumea’s shape, making this dwarf planet look like a football. Two teams claim credit for discovering Haumea citing evidence from observations made in 2003 and 2004.

Detailed explanation-2: -Sometime early in its history, another large Kuiper belt object collided with Haumea obliquely. This collision knocked away most of the ice (which would have been on the outside) of Haumea, leaving just a rock covered in a thin film of ice. The oblique impact caused Haumea to spin rapidly.

Detailed explanation-3: -Because Haumea has two moons, its mass can be calculated, and it was estimated to be one-third that of Pluto or 1/1400 that of Earth. Due to its fast rotation, a day on Haumea lasts about 3.9 hours. It takes about 285 Earth-years for Haumea to make a complete orbit around the sun.

Detailed explanation-4: -Haumea rapidly rotates in just under 4 hours, causing it to be elongated.

Detailed explanation-5: -Haumea is the most distant solar system body with a ring and the only dwarf planet and Kuiper belt object to have one.

There is 1 question to complete.