Discovery of Asteroid 1976 AA

Details Discovery of Asteroid 1976 AA Discovery of Asteroid 1976 AA

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977icar...31..415h&link_type=abstract

Icarus, vol. 31, Aug. 1977, p. 415-419.

Astronomy and Astrophysics

Astronomy

2

Asteroids, Astronomical Photometry, Planet Ephemerides, Radiometers, Solar Orbits

Scientific paper

Asteroid 1976 AA was discovered as a result of a continuing systematic search for planet-crossing asteroids. It is the first asteroid to be thoroughly investigated by means of photometry and radiometry on its discovery apparition. It is also the first asteroid found with a semimajor axis and period less than that of the earth and the first earth-crossing asteroid which does not cross the orbit of either Mars or Venus. According to estimates, there may be several tens of objects to absolute magnitude 18, which are exclusively earth crossing. Some of these objects might be exceptionally easy to reach by spacecraft.

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