... consideration one night asteroid positions, up to now only two nights observations ... night observations but these circular orbits (real eccentricity is equal 0.33) may ... Sky Survey, Arizona, USA D=0.4, FL=1.2, FOV=175x175', Scale=2.6" 649 4 Powell ...
... to the low elevation of the equator, white nights, and poor weather in winter months ... TYCHO-2 Space Catalog over the entire sky and near the observed object to determine ...