Comet Book
Free
rated 4.2 stars
100,000+
downloads
About Comet Book
This app determines where Comet is in the sky when it becomes visible at your observing site. You can easily start your observation of a Comet by using Comet Book as a guide to the direction and elevation of the comet.
In addition, the new “3D Solar System seen from Space” mode allows you to view the motion of Comets and planets turning around the sun. Please take a look the comet’s movement around our solar system.
Comet Book Screenshots
Reviews for Comet Book
donnie spiller
8/3/2025
great little app. I'm very lightweight and easy to navigate. free with no ads. would be nice however, if it had a large library of comets/asteroids to track and access information in regards to Neos. all in all, still a worthwhile app to have. highly recommended.
Štepán Čech
10/15/2024
Super ❤️
Holger Isenberg
10/11/2024
Works great to find comet C/2023 A3 Tsuchinshan-ATLAS in the sky and also offers a 3d solar system view!
Slavoljub “Sasha” Krishan
8/5/2024
After one year of using this app since yesterday app crashed during startup!? Any help will be appreciated
Audi McAvoy
7/28/2023
Website link under "Developer contact" in Google Play is broken. No reply to email link after 48 hours. Using the "Contact Us" in the app (buried at the bottom of the Support Page found from the Help menu) is tedious at best. Not worth the effort to use only to find that it doesn't work (confidence is not high that it will). The real problem is: the app is only showing two comets (neither of which are currently visible). And I cannot figure out how to add/update the comet information.
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