Planetary astronomy P. I. research summary

Details Planetary astronomy P. I. research summary Planetary astronomy P. I. research summary

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988plas.rept...57h&link_type=abstract

In NASA, Washington, Reports of Planetary Astronomy, p 57-58 (SEE N89-16624 08-89)

Astronomy and Astrophysics

Astronomy

Asteroids, Astronomical Photography, Populations, Size Distribution, Astronomical Observatories, Estimates, Telescopes

Scientific paper

A systematic survey for near-Earth and planet-crossing asteriods is being conducted with the 0.46 m Schmidt at Palomar to increase the number of known asteroids and establish improved estimates of their populations and size distribution. Access to a limited number of PSS11 plates from the 1.2 m Schmidt are used also to search for unusual objects. Field pairs from the 0.46 m are photographed and inspected with a stereomicroscope; new objects are detected and followed to establich definitive orbits. When near-Earth asteroids are discovered, other astronomers are informed so that physical observations can be obtained. With remote sensing results, possible generic relationships are suggested. Population refinements can be accomplished by increasing the number of known asteroids under well-established conditions of search. From 13 observing runs made at Palomar, 215 new asteroids were discovered and reported with good orbits determined for 90. Significant discoveries are Apollo 1988 EG, Amor 1987 QB, and an unusual high inclination asteroid, 1988 EO. Other discoveries of importance include 12 Mars-crossers, 6 Hungaries, and 13 Phocaeas. The discovery of short-period comet Helin, 1988w, which makes a close approach to Saturn, is also notable.

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