A search for Earth-crossing asteroids.
By: L.G. Taff, J.M. Sorvari, and D.F. Kostishack.
Contributors: Sorvari, J. M.; Kostishack, D. F.; Lincoln Laboratory.; United States. National Aeronautics and Space Administration.
Series: NASA-CR -- 173255.; NASA contractor report -- NASA CR-173255.
Publisher: Lincoln Laboratory, M.I.T.; National Aeronautics and Space Administration
Published: 1984
Place of publication: Lexington, MA; [Washington, D.C
Language: eng
Format: Microform
Number of pages: 98
Subjects: Near-earth asteroids.; Asteroids.; Astronomical photography.; Asteroids.; Astrometry.; Space surveillance (ground based); Tracking (position)
Description: "The ground based electro-optical deep space surveillance program involves a network of computer controlled 40 inch 1m telescopes equipped with large format, low light level, television cameras of the intensified silicon diode array type which is to replace the Baker-Nunn photographic camera system for artificial satellite tracking. A prototype observatory was constructed where distant artificial satellites are discriminated from stars in real time on the basis of the satellites' proper motion. Hardware was modified and the technique was used to observe and search for minor planets. Asteroids are now routinely observed and searched. The complete observing cycle, including the 2'-3' measurement of position, requires about four minutes at present. The commonality of asteroids and artificial satellite observing, searching, data reduction, and orbital analysis is stressed. Improvements to the hardware and software as well as operational techniques are considered"--NTIS abstract.
Notes: Includes bibliographical references (p. 97).

Semiannual 1 Jan.-30 June 1983 (Revised January 20, 1984).

Microfiche. [Washington, D.C. : National Aeronautics and Space Administration], 1984. 2 microfiches.

NASA contract NAGW-232.