Celestial Navigation Data Calculator

All positional data is displayed as degrees, arcminutes, and tenth of arcminutes. Data is shown, except for Aries, if the respective body is above the horizon, regardless of the usability for observation. Data is calculated for current system time what is converted and displayed as universal time. Arrangement of data is to match closely that found on (external link) http://aa.usno.navy.mil/data/docs/celnavtable.php and the notes given there mostly apply to this app. The source of the data is the Bright Star Catalog of 2017 and Jet Propulsion Laboratory’s DE241 development ephemeris. For calculation, the software package NOVAS C3.1 from U.S. Naval Observatory is used. This app does not do anything more. No internet connection, no up- or downloads, no usage of your position data, no advertising or anything the like. Just calculate and display.

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