The Comet Book app clearly shows when Comets can be viewed and in which direction. The direction and elevation of a Comet can change noticeably in a day due to its fast apparent motion. The moon and a bright planet may be convenient as a guide to find the comet though they have large apparent motion, too.

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.
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What's New

The current local time button has been added to make it easier to find comet in the sky by holding the device over the head when you choose the comet.
For some models, we have fixed the problem of crashing at startup.
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Additional Information

Updated
July 29, 2020
Size
2.6M
Installs
50,000+
Current Version
2.5.3
Requires Android
5.0 and up
Content Rating
Everyone
Permissions
Offered By
株式会社 ビクセン
Developer
〒359-0021 埼玉県所沢市東所沢五丁目17番地3
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