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 519
... trajectory to Earth reentry , whereas the second profile requires a three - impulse return transfer to Earth orbit . Note that , for the multi - impulse return , the arrival impulse provides a 12 hr Earth orbit that is more practical ...
... trajectory to Earth reentry , whereas the second profile requires a three - impulse return transfer to Earth orbit . Note that , for the multi - impulse return , the arrival impulse provides a 12 hr Earth orbit that is more practical ...
Seite 523
International Astronomical Union. Colloquium Tom Gehrels. 1977 TRAJECTORY GEOMETRY Ecliptic projections of the outbound and return trajectories for the 1977 Eros round - trip mission are shown in figure 7 ( a ) for the solar electric ...
International Astronomical Union. Colloquium Tom Gehrels. 1977 TRAJECTORY GEOMETRY Ecliptic projections of the outbound and return trajectories for the 1977 Eros round - trip mission are shown in figure 7 ( a ) for the solar electric ...
Seite 529
... trajectory with onboard propulsion may be categorized as follows : ( 1 ) Opportunities resulting from randomly generated trajectories that combine flybys of several asteroids , none of which are preselected , into one mission requiring ...
... trajectory with onboard propulsion may be categorized as follows : ( 1 ) Opportunities resulting from randomly generated trajectories that combine flybys of several asteroids , none of which are preselected , into one mission requiring ...
Inhalt
ASTROMETRIC OBSERVATIONS | 3 |
THE WORK AT THE MINOR PLANET CENTER | 9 |
DIAMETER MEASUREMENTS OF ASTEROIDS 25 | 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 craters curve density determined diameter discussed distance Dohnanyi Dollfus Earth ecliptic effect equation Eros families Figure flyby fragments function Gehrels Geophys gravity 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 meteoroid 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 planetary planetoids polarization pole propulsion radius range relative rotation sample satellites scattering semimajor axis solar nebula solar system space spacecraft stream surface target telescope trajectory Trojans velocity Vesta wavelength Whipple Zodiacal Light