On the determination of heliographic positions and rotation velocities of sunspots

• 1 October 1983
• journal article
• research article
• Published by Springer Nature in Solar Physics
• Vol. 88  (1) , 71-75
• https://doi.org/10.1007/bf00196178

Abstract

Keywords

• DEPRESSION
• REDUCTION METHOD
• ROTATION VELOCITY
• SMALL SUNSPOT
• DISK PASSAGE