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Colliding Asteroids from Blind Directions
Author(s) -
ISOBE SYUZO,
YOSHIKAWA MAKOTO
Publication year - 1997
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.1997.tb48338.x
Subject(s) - asteroid , sky , astronomy , physics , aperture (computer memory) , astrobiology , geodesy , astrophysics , geology , acoustics
The Spaceguard Project proposes to set up a network of five ground‐based telescopes, each with an aperture of 2–3 m. With ground‐based telescopes, there is a blind celestial area surrounding the Sun (say, within 30 degrees), in which an asteroid approaching the Earth cannot be detected optically because of bright sky background. Our study shows that the number of close approaches of asteroids coming from this area to within a minimum distance of less than 0.01 AU of the Earth is more than 30% of the total.