In July 2018, Carnegieโ€™s Scott Sheppard announcedย the discovery of 12 new moons orbiting Jupiter — 11 โ€œnormalโ€ outer moons, and one that he called an โ€œoddball.โ€ This brought Jupiterโ€™s total number of known moons to a whopping 79 — the most of any planet in our solar system.

Now the public can help Sheppard and his co-discoverers select the names for five of these newly announced moons!

โ€œIโ€™m excited to get suggestions — and especially eager to see video suggestions — from the public for what these five moons should be named,โ€ Sheppard said.

Contest Launch Date:
February 21, 2019

Contest End Date:
April 15, 2019

How To Submit:
Tweet your suggested moon name to @JupiterLunacy and tell us why you picked it using 280 characters or fewer or a short video. Donโ€™t forget to include the hashtag #NameJupitersMoons.

General Rules:
* Jupiter moons must be named after characters from Roman or Greek mythology who were either descendants or lovers of the god known as Jupiter (Roman) or Zeus (Greeks).
* Submissions must be 16 characters of fewer, preferably one word.
* Submissions must not be offensive in any language or to any culture.
* Submissions must not be too similar to the existing names of any moons or asteroids.
* Names of a purely or principally commercial nature are prohibited.
* Names of individuals, places, or events that are principally known for political, military, or religious activities are not suitable.
* Names commemorating living persons are not allowed.

Rules for Each Individual Moon:
* S/2003 J5 (Jupiter LVII) which is retrograde and thus name must be related to Jupiter or Zeus and end in an โ€œe.โ€
* S/2003 J15 (Jupiter LVIII) which is retrograde and thus name must be related to Jupiter or Zeus and end in an โ€œe.โ€
* S/2003 J3 (Jupiter LX) which is retrograde and thus name must be related to Jupiter or Zeus and end in an โ€œe.โ€
* S/2017 J4 (Jupiter LXV) which is prograde and thus name must be related to Jupiter or Zeus and end in an โ€œa.โ€
* S/2018 J1 (Jupiter LXXI) which is prograde and thus name must be related to Jupiter or Zeus and end in an โ€œa.โ€

Learn More:
Further details about how the International Astronomical Union names astronomical objects can be found atย https://www.iau.org/public/themes/naming/

This video details some of the possible Jupiter moon names and can tell you more about how the Jupiter moon-naming process works:ย https://www.youtube.com/watch?v=FdAAaix0uvk&feature=youtu.be

Make Sure Your Proposed Name Is Not Already in Use:
Current asteroid names can be checked at the International Astronomical Unionโ€™s Minor Planet Center atย https://www.minorplanetcenter.net/db_searchย orย https://minorplanetcenter.net/iau/lists/MPNames.html

Existing names for Jupiterโ€™s other moons can be checked at Sheppardโ€™s website:ย https://sites.google.com/carnegiescience.edu/sheppard/moons