Right Ascension - Symbols and Abbreviations

Symbols and Abbreviations

Unit Value Symbol Sexagesimal system In radians
Hour 1⁄24 circle ( h ) 15° π⁄12 rad
Minute 1⁄60 hour ( m ) 1⁄4°, 15' π⁄720 rad
Second 1⁄60 minute ( s ) 1⁄240°, 1⁄4', 15" π⁄43200 rad

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