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Astronomical appreciation of the Gregorian calendar
On finding the apsidal period of an eclipsing binary
Abstract In many cases of eclipsing binaries showing apsidal motion, only a fraction of the apsidal period is covered by the observations. Such data can, however, furnish a value of the apsidalExpand
Three new variable stars in Cygnus
MEASUREMENTS OF THE SUN'S LIMB FOR THE DETERMINATION OF REFRACTION BETWEEN 80 DEGREES AND 90 DEGREES ZENITH DISTANCE
Abstract : The annular solar eclipse of Dec 14, 1955, was observed by joint Georgetown and Air Force groups from various stations, the first of which was Khartoum, Africa. The sun rose at KhartoumExpand
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