PlanetFun

1K+
Downloads
Content rating
Everyone
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About this app

Planet Fun is a 4D simulation of the solar system (3D+Time). It shows the Sun, Moon, 9 planets and the star background. The app was developed with Delphi, and runs on multiple platforms.

App open source code (Delphi FMX) is available at:

https://github.com/omarreis/vsop2013

Planet positions are calculated using VSOP2013 and VSOP87. Moon positions use ELP2000. Star background contains 42455 stars of Hipparcos Input Catalogue, with optional constellation lines and names.

Program features:

* Solar system animation with configurable speed
* Choose camera target (Sun, planets, Moon)
* A lighthouse marks the user position on Earth (uses GPS)
* Set date/time between years 1500 and 3000
* Configurable camera distance-to-target
* Touch gestures: one finger pan, two finger zoom and two finger rotation
* Show planet orbits. Each orbit is represented by 52 dots ( For the Earth, it is 1 dot per week)
* Star background, with constellation patterns.
* Actual 3D spheres for the 150 brightest stars.
* Celestial sphere background image, with optional names and constellation lines.
* Solar system heliocentric axis (x and z)
* Activate phone sensor for augmented reality mode. The scene moves to match the real world. Use the [phone] button for that.

Source code and documentation covers many aspects of astronomical algorithms.

video: https://www.tiktok.com/@omar_reis/video/6859411602031119622
Updated on
Aug 12, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What's new

- Added program translations: French, Portuguese, Italian, Spanish
- Fixed phone model roll direction ( phone was rolling to the wrong side )