English English | Deutsch Deutsch
Privacy Settings

We use only very few cookies on our website. Some are necessary for the use of the website (essential functions) and therefore cannot be disabled. Furthermore, we only use Analytical Cookies to better understand user behaviour in order to optimizing Sun.org. Accepting these cookies helps us a lot.

Learn more


Even an asteroid can have a moon. This asteroid is called Ida and has an average diameter of 31 km. It is orbited by the small moon Dactyl being just 1.4 km in diameter. Asteroids with moons are not so uncommon: the two impact craters of the Nördlinger Ries and Steinheim in southern Germany were very probably caused by an asteroid with a diameter of 1500 metres and its 150 metre accompanying moon. Ida is a typical asteroid belt object. This image was composed by Sun.org from photos taken during NASA's Galileo mission fly-by.

If interested, read more about: Asteroids, meteoroids, meteors, meteorites, comets


All text and articles published by Sun.org are licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Creative Commons License
Ida and Dactyl
Meteorites for sale
Published by Published or last modified on 2017-01-14