Comet Book

The 3D view is available for viewing Comets and planets turning around the sun.

App info

Version :

2.7.3

Category :

Education

Update :

January 07, 2025

Installs :

126,306

Developer :

株式会社ビクセン

Requires Android :

Android 5.0+

Content Rating :

Everyone

Get it on :

Download APK

App description

Android App Analysis and Review: Comet Book, Developed by 株式会社ビクセン. Listed in Education Category. Current Version Is 2.7.3, Updated On 07/01/2025 . According to users reviews on Google Play: Comet Book. Achieved Over 126 thousand Installs. Comet Book Currently Has 505 Reviews, Average Rating 4.1 Stars

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.

We are currently offering version 2.7.3. This is our latest, most optimized version. It is suitable for many different devices. Free download directly apk from the Google Play Store or other versions we're hosting. Moreover, you can download without registration and no login required.

We have more than 2000+ available devices for Samsung, Xiaomi, Huawei, Oppo, Vivo, Motorola, LG, Google, OnePlus, Sony, Tablet ... with so many options, it’s easy for you to choose games or software that fit your device.

It can come in handy if there are any country restrictions or any restrictions from the side of your device on the Google App Store.

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.

Rate and review on Google Play store

4.1

505 total

5 68.6

4 5.3

3 8.7

2 8.7

1 8.7

Total number of ratings

Total number of active users rated for: Comet Book

Total number of installs (*estimated)

Estimation of total number of installs on Google Play, Approximated from number of ratings and install bounds achieved on Google Play.

Recent Comments

Audi McAvoy

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.

bubba fat

The time is off by an hour in July at NYC. On Android version, but it is fine on iPhone version. If i look at location of the sun, the app shows it's below the horizon, however the sun doesn't set for another hour. Probably the app didn't take account of daylight savings time. I have to move the time in the app back one hour for accurate, current locations of objects in the sky.

Soli Deogloria

Really cool application. I'm trying to figure out where comet Neowise will be in relation to my location and it's visible times. Great help for photography. The only problem is when using the drag bar to set day the app crashed and I ended up back on my home screen. It did this several times, but once I had the day set it seemed stable. Hope this feedback can help the Developer correct this problem. I'm running Honor View 10 Android 8.1..... Thanks Dev, Great app....

Karly Narvaez

Has a lot of potential however, it and inaccurate prediction of where the comment is, possibly because it may not compensate for where on the earth the user is or for the local time zone. Yeah but gives one location I went through a website and it gave me another location, and it was only when I checked the website that I was able to locate the comet. The way the app is structured is great and the display is great, so it has potential however this is a critical problem that needs to be fixed

Slavoljub “Sasha” Krishan

After one year of using this app since yesterday app crashed during startup!? Any help will be appreciated

Victor Sanchez

Just got back from taking pictures of Neowise. If I listened to this app, I would have missed it completely. The app said it would fall below the horizon around 9:30 pm. Couldn't be more wrong. That didn't happen until almost 11 PM. No point in usuing an app that isn't accurate.

Andy Khula

Really like this Comet Book. Took a little while but found how to fine tune the time setting. Simply tap the word TIME and two arrows appear. No need to drag the time bar. Tap the up arrow to advance time slowly. The same for advancing days forward and back. Wonderfull, thanks VIXON.

Xenos Yps

Could be a great little app, but unfortunately and incomprehensibly the horizon is fixed to ~ 36 ° N, so altitude (elevation) value and horizon line only work for Tokyo (where the author lives) and other locations at this circle of latitude, but not for the rest of the world. Please fix this!