Beasley, Dolores. NASA Details Earthquake Effects on the Earth. National Aeronautics and Space Administration (press release). 2005-01-10. (原始内容存档于2011-01-27)
from the March 1970 issue of Astronautics & Aeronautics, a publicaion of the American Institute of Aeronautics and Astronautics.. Washington, D.C.: Scientific
000(89%)是主帶小行星。 近小行星指數地用於計算新物體是近地候選物體的概率。 近地天體確認頁面用於確認近地物體和潜在威脅天體。 National Aeronautics and Space Administration; European Space Agency; Jewitt, David. Comet