Physical Studies of Minor PlanetsScientific and Technical Information Office, National Aeronautics and Space Administration, 1972 - 687 Seiten " ... Some papers and discussions included in this book even though they were not presented at the meeting. In some respects, therefore, the book is independent of the colloquium. Several papers had been invited long beforehand with the request to publish them as review papers. The lack of a modern textbook on minor planets is keenly felt, and the proceedings of this meeting, with these additions, should provide a good reference book."--Page viii. |
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Seite 41
... Infrared measurements therefore provide an opportunity to determine the diameters of the brighter asteroids . ASSUMPTIONS Certain assumptions must be made before the infrared flux can be converted into a diameter . The ideal asteroid ...
... Infrared measurements therefore provide an opportunity to determine the diameters of the brighter asteroids . ASSUMPTIONS Certain assumptions must be made before the infrared flux can be converted into a diameter . The ideal asteroid ...
Seite 42
International Astronomical Union. Colloquium Tom Gehrels. TABLE I. - Infrared Diameters of Three Asteroids Asteroid Number of determinations Infrared diameter , km Barnard's diameter , km Density , g - cm- Reference to mass Ceres Juno ...
International Astronomical Union. Colloquium Tom Gehrels. TABLE I. - Infrared Diameters of Three Asteroids Asteroid Number of determinations Infrared diameter , km Barnard's diameter , km Density , g - cm- Reference to mass Ceres Juno ...
Seite 43
... infrared diameter would then be 35 percent too large . Rotation If an asteroid rotates , it emits some of its thermal radiation on the night side and the signal received at Earth is reduced . The exact reduction depends on the period ...
... infrared diameter would then be 35 percent too large . Rotation If an asteroid rotates , it emits some of its thermal radiation on the night side and the signal received at Earth is reduced . The exact reduction depends on the period ...
Inhalt
ASTROMETRIC OBSERVATIONS | 3 |
THE WORK AT THE MINOR PLANET CENTER | 9 |
DIAMETER MEASUREMENTS OF ASTEROIDS | 25 |
Urheberrecht | |
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accretion albedo Alfvén Anders Apollo Apollo 12 Apollo asteroids asteroid belt asteroid families Astron Astrophys axis brightness Brouwer Ceres chondrites collisional collisions cometary comets counterglow curve density determined diameter discussed distance Dohnanyi Dollfus Earth ecliptic effect ephemerides equation Eros families Figure flyby fragments function Gehrels Geophys gravitational heliocentric Houten Icarus impact interplanetary dust iron meteorites jetstream Jupiter km/s Kuiper launch libration lightcurve longitude lunar magnitude Mars Mars-crossing asteroids mass distribution material measurements meteor meteoroids minor planets mission Moon NASA number of asteroids numbered asteroids objects Observatory observed obtained orbital elements Pallas parent bodies particles percent perihelion perturbations phase angle phase coefficient photometric PHYSICAL STUDIES planetary planetoids polarization pole propulsion radius range rotation sample satellites scattering semimajor axis solar nebula solar system space spacecraft stream STUDIES OF MINOR surface trajectory Trojans velocity Vesta wavelength Whipple Zodiacal Light