Comet Book
8.5 35
v2.7.10 by 株式会社ビクセン
About Comet Book
Comet Book (Package Name: jp.co.vixen.cometbook) is developed by 株式会社ビクセン and the latest version of Comet Book 2.7.10 was updated on April 21, 2026. Comet Book is in the category of Education. You can check all apps from the developer of Comet Book and find 121 alternative apps to Comet Book on Android. Currently this app is for free. This app can be downloaded on Android 8.0+ on APKFab or Google Play. All APK/XAPK files on APKFab.com are original and 100% safe with fast download.
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.
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 2.7.10 Update
Some bugs have been corrected.
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Comet Book Features
Previous Versions
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Screen DPI: nodpi
SHA1: 085c5dc53d44c9715329cac7f1405c6aaf155c39
Size: 4.04 MB
What's New:
Some bugs have been corrected.
Requires Android: Android 8.0+
Screen DPI: nodpi
SHA1: 643d00b21574ade37391cfd65dd2f56e2aad5a69
Size: 4.5 MB
What's New:
Some bugs have been corrected.
Requires Android: Android 8.0+
Screen DPI: nodpi
SHA1: b8632c09ae2207670bbf28fe1889aa172f9dff36
Size: 3.51 MB
What's New:
Some bugs have been corrected.
Requires Android: Android 8.0+
Screen DPI: nodpi
SHA1: 3a0783c8fec5a93357c0920f42659b7a0945d40e
Size: 3.68 MB
What's New:
A fix has been made to the problem where the perihelion display was off by one month when orbital elements were downloaded from MPC.
More Information
Package Name:
Update Date:
2026-04-21
Latest Version:
2.7.10
Need Update:
Available on:
Requirements:
Android 8.0+
Report:
Safe to Download
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