Amateur Astronomer Discovers 80th Moon That Orbits Jupiter


Amateur Astronomer Discovers New Moon Orbiting Jupiter

by David Kindy/

Amateur astronomer Kai Ly is on a roll. They rediscovered four “lost” Jupiter moons last year. Now, Ly has located a previously unknown moon orbiting the biggest planet in our solar system.

“I’m proud to say that this is the first planetary moon discovered by an amateur astronomer!” they posted June 30 in a message at the Minor Planet Mailing List (MPML), an online community of the world’s leading amateur astronomers.

Using old telescope images, Ly was able spot the unnamed satellite orbiting Jupiter, which is nearly 385 million miles from Earth. The distant planet has at least 79 moons—now 80—some so small and indistinct they can only be detected by a large telescope one month of the year.

To locate this satellite, Ly scoured images taken by the Canada-France-Hawaii Telescope in 2003, reports Jeff Hecht of Sky & Telescope. This dataset was the same one they used to find the four “lost” moons last year. The barely discernable satellites disappeared from view until Ly was able replot their trajectories and identify them on the images.

The amateur astronomer found the missing moons in the Carme cluster, a group of 22 space rocks with similar orbits, reports Doris Elin Urrutia at Read More:

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  1. Nice CGI.
    I like picking out the human facial images; mostly in profile.
    But that’s just how I see it.
    You may see something else.
    Thanks for all you do.
    You never know who may see what.

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