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12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Astronomy Star Type Calculator Screenshots

iPad

iPhone

About Astronomy Star Type Calculator

This application calculates the precise spectral type of a main sequence star using surface temperature. Use this astronomy app to discover all the different classes of stars from M through O. Some newer star types are included such as Y, K, and L.

Features:
• Enter a surface temperature from 250K to 60,000K.
• As you edit the temperature, the results will change in real time.
• Pictures of example stars from each spectral class.
• Learn about the MK System that defines each star class.
• View the graph that shows the distribution of star classes vs. luminosity

What's New in the Latest Version 6.0

Last updated on Apr 19, 2018

Old Versions

This app has been updated by Apple to display the Apple Watch app icon.

• Manually change the temperature for more precision
• Updated for iOS 11
• Minor bug fixes

Version History

6.0

Apr 19, 2018

This app has been updated by Apple to display the Apple Watch app icon.

• Manually change the temperature for more precision
• Updated for iOS 11
• Minor bug fixes

5.0

Jun 21, 2017

- Improved User Experience
- Promotional Text

4.1

Jun 9, 2017

- Better User Experience

4.0

Jun 5, 2017

- Google AdMob

1.4

Mar 2, 2017

- Updated dark tab bar color
- Condensed app name for viewing on device