What are RA and DEC?
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Descrição
Right ascension - Wikipedia
Astronomical Terms
Linearized RA versus DEC plot of the data points for the data sets
Reference Systems - NASA Science
إحداثيات استوائية RA-Dec
What are RA and DEC?
Precession, Proper Motion, and Angular Separation
Where is it? Celestial coordinates explained
Double Star KUI82AB,C Measurements with AIP4WIN
Right ascention and declination – British Astronomical Association
Equatorial coordinate system - Wikipedia
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