ISS Transit Prediction Pro

4.9
73 reviews
1K+
Downloads
Content rating
Everyone
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About this app

This application generates International Space Station (ISS) Transit Predictions for the Sun, Moon and Planets.

The user specifies a location, which includes latitude, longitude and elevation. The application downloads the latest orbital information as Two Line Elements. The application generates a transit prediction map which contains prediction paths for each transit within a specified alert radius.

*** Please try the ad-supported ISS Transit Prediction Free before purchasing to make sure you like the app ***

USER INTERFACE
The main screen provides 4 buttons:
•Location - Press this button to add or select the prediction generation location
•Two Line Elements (TLE) - Press this button to download TLEs
•Generate Prediction - Press this button to start the prediction generation
•View Prediction - Press this button to view the prediction map or text file

The options menu provides the following:
•Locations - Press to add, select, edit or delete saved locations
•Predictions - Press to view, share or delete saved prediction maps
•Settings - Press to set user preferences
•DEM Files - Press to list or delete the downloaded Digital Elevation Model (DEM) Data
•Help - Press to display this help page
•About - Press to display application version, credits and links

LOCATIONS
Add a named observing location by clicking the "Add Location" button accessible from the locations screen.

The location coordinates can be entered in any of three methods:
•Manually - Enter latitude, longitude and elevation in the text boxes. Positive values represent North and East, negative values South and West. Elevation can be entered in meters or feet above sea level depending on the current prediction units setting.
•Search - Press the search button to search for a location.
•Map Input - Use the map to zoom and pan to a location. Pressing the Set button sets the location name, coordinates and elevation in the text boxes. The elevation of the current coordinates is retrieved using the specified elevation data source setting. Switch between map and satellite modes by toggling the Map/Sat button.
•GPS - By pressing the GPS button, the application uses GPS to obtain location coordinates and elevation.
Use the locations page accessible from the options menu to edit and delete saved locations.

GENERATING PREDICTIONS
Once a location has been entered and TLE have been downloaded, press the "Generate Prediction" button to begin prediction generation. The progress bar gives an indication of how long it will take to complete the process. Depending on your CPU speed, it can take a few minutes to generate the predictions. Pressing the cancel button will cancel the prediction.

VIEWING PREDICTIONS
Once the prediction generation is complete, the prediction map or text file can be viewed. Pressing the View Prediction button brings up the previously generated prediction map. The text button within the map view displays the prediction text. The Map/Sat button switches between Map mode and Satellite mode.

Within the map view press the Google Earth button to view the map in Google Earth. Press the save button to save the prediction for later viewing.
Within the transit information window, press the add to calendar button to create a calendar event.
Use the predictions page accessible from the options menu to view, share and delete previously saved prediction maps.

PERMISSIONS
Storage: Only required if user selects option to supply their own orbital elements file
Your Location: Only required if user selects GPS option to move map to user's current location
Updated on
Jun 18, 2021

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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4.9
73 reviews
Phase Four
October 23, 2020
With the Calsky website no longer in operation this is the only way to get accurate predictions of ISS-Planetary transits. Thanks to this app I was able to find a shooting location and successfully get an excellent image of the ISS right next to Jupiter last week, a very rare occurrence. I will no doubt continue using it for the much more common Lunar and Solar transits.
7 people found this review helpful
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Antonio Piras
June 9, 2021
Great app, but is it possible to use it to predict transits of the Chinese space station? The TLE includes this satellite, it just seems that the app allows to use only TLE for the ISS.
3 people found this review helpful
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A Google user
January 7, 2019
Chasing the ISS can be frustrating, but success is always so rewarding. This app makes it all possible.
8 people found this review helpful
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What's new

Planetary transits are now properly generated when the sun is below the horizon and the ISS is in sunlight