# Astronomy:Schaeberle (Martian crater)

Planet Schaeberle Crater, as seen by THEMIS Mars 158.67 km

Schaeberle is a crater in the Iapygia quadrangle of Mars, located at 24.7° S and 309.9° W. It measures approximately 159 kilometers in diameter and was named after John Martin Schaeberle, an American astronomer (1853–1924).[1]

Impact craters generally have a rim with ejecta around them, in contrast volcanic craters usually do not have a rim or ejecta deposits. As craters get larger (greater than 10 km in diameter) they usually have a central peak.[2] The peak is caused by a rebound of the crater floor following the impact.[3]

Small crater in Schaeberle Crater

## References

1. Hugh H. Kieffer (1992). Mars. University of Arizona Press. ISBN 978-0-8165-1257-7. Retrieved 7 March 2011.