How big is Deimos?
12.4 km across · 7.7 mi
Mars’s smaller moon averages about 12.4 kilometers across.
Mount Everest 8.8 km
Deimos 12.4 km
Compared with things you know
- Deimos is about 15× the height of the Burj Khalifa Burj Khalifa: 828 m
- Deimos is about 9.7× the length of the Golden Gate Bridge main span Golden Gate Bridge main span: 1.3 km
- Deimos is about 1.4× the height of Mount Everest Mount Everest: 8.8 km
- Deimos is about 1/1.7 the length of Manhattan Manhattan: 21.6 km
Think you could size it by eye? Deimos is one of the objects in Sizedle.
Similar space
- Halley's Comet nucleus 15 km long 9.3 mi
- Chicxulub impactor 10 km across 6.2 mi
- Olympus Mons 21.9 km tall 13.6 mi
- Phobos 22.2 km across 13.8 mi
- Meteor Crater 1.2 km across 3,937 ft
- Asteroid Ryugu 900 m across 2,953 ft