2.75 Jul 24, 2025
4.2 Wolfgang Zima
Paid for free
Mobile Observatory is an essential tool for anyone fascinated by the wonders of the sky, from casual stargazers to dedicated amateur astronomers. Below are its main features:
Zoomable sky map
displaying stars, planets, asteroids, and more visible both above and below the horizon.
Live mode
Point your device at the sky and receive information about what you see.
Interactive top-down view
of the Solar System.
Comprehensive calendar with detailed descriptions of celestial events.
Ability to push celestial events to your phone's calendar and set reminder alarms.
Rise, set, and transit times
for any celestial object.
Determine the precise position of any object in the sky (altitude and direction).
Access to twilight times and length of the day.
Detailed Bright Star Catalog featuring around 9,000 stars and additional data on over 400,000 stars from the PPM Star Catalog (requires Android 3.1 or higher).
Information on 2,500 selected NGC objects (galaxies and clusters), as well as images from the Messier, Caldwell, and Hidden Treasures catalogs, containing a total of 329 objects.
Data on meteor streams, including their beginning, peak, and hourly rates.
Information on lunar and solar eclipses, along with lunar librations, ascending nodes, and maximum declination.
Up-to-date information on bright comets based on the current date.
Knowledge about the five known dwarf planets and data on minor planets (over 10,000 entries available).
Online database updates to download the latest orbital elements for comets and minor planets.
Information on moon phases and the apparent view of the sun and planets.
Current image of the Sun and its sunspot numbers.
Automatically generated visibility reports for any celestial object.
Light pollution simulation.
A user-friendly interface that allows quick navigation.
Widget showing rise and set times of the Sun and Moon.
Maintain a list of favorite locations and determine automatic location using mobile networks or GPS.
Select locations from a built-in database or Google Maps.
Offers data from over 400 observatory locations and allows you to choose any time and date.
Accurate ephemeris and visibility details for all celestial objects.
Dates for conjunctions between any object, planets, or the Moon.
3D views
of the Moon and planets with precise calculations for dates ranging from 1900 to 2100.
Mobile Observatory 2 - Astronomy Mod (paid) version 2.75 APK was published on October 6, 2019. The size of this APK file is 30.64 MB and requires Android version 4.1 or higher. Over 34 users have downloaded this mod and it has received a rating of 3.7 out of 5. The app provides unlimited access to certain features and enhances your astronomy experience effortlessly.
In summary, Mobile Observatory serves as a comprehensive resource for tracking celestial events, enhancing your understanding of astronomy, and making sure you’re always informed about the wonders of the night sky!