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ASTRONOMY: C. D. PERRINE 
2. The aphelia of the eight major planets are confined to the half 
of the sky whose center is the longitude of the apex of solar motion. 
Their longitudes are arranged almost symmetrically with respect to 
130° 280 
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FIG. 3. APHELIA OF SHORT-PERIOD COMETS (Upper). FREQUENCY CURVE OF SAME IN 
LONGITUDE (Lower) 
that point. The center of preference in direction of the aphelia of these 
bodies is, therefore, the intersection of the ecliptic and galactic planes. 
3. The aphelia of the minor planets show a consistent and strong 
preference for longitudes in the region of 195°. The curve of preference 
