Results 291 to 300 of about 950,190 (312)
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2010
I n our chapters on the Sun and Moon, on the Earth and Venus, and on Mercury and Mars, we have been usually discussing the features and the movements of globes of vast dimensions. The least of all these bodies is the moon, but even our moon is a ball 2,000 miles from one side to the other.
G. F. Chambers
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I n our chapters on the Sun and Moon, on the Earth and Venus, and on Mercury and Mars, we have been usually discussing the features and the movements of globes of vast dimensions. The least of all these bodies is the moon, but even our moon is a ball 2,000 miles from one side to the other.
G. F. Chambers
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Nature, 1977
A hypothesis based on the accretion model of planet formation is proposed which can explain why minor planets could not grow into full-sized planets. Temperature and impact-velocity conditions for bouncing, accumulation, and fragmentation of planetesimals are evaluated for silicate and iron planetesimals at the heliocentric distances of Mercury, Venus,
Hitoshi Mizutani, Takafumi Matsui
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A hypothesis based on the accretion model of planet formation is proposed which can explain why minor planets could not grow into full-sized planets. Temperature and impact-velocity conditions for bouncing, accumulation, and fragmentation of planetesimals are evaluated for silicate and iron planetesimals at the heliocentric distances of Mercury, Venus,
Hitoshi Mizutani, Takafumi Matsui
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Photographic positions of Minor Planets
Astronomische Nachrichten, 1992AbstractPhotographic precise positions of 13 minor planets obtained with the G.P.O. astrograph at E.S.O. (La Silla, Chile) in September 1987 are given.
H. Debehogne +2 more
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2014
A brief overview is presented of the current and historical processing of observations and orbits by the Minor Planet Center (MPC). The MPC is delegated by the International Astronomical Union with organizing the cataloging of minor bodies in the solar system. G.V. Williams (*) • T.B.
Timothy B. Spahr, G. V. Williams
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A brief overview is presented of the current and historical processing of observations and orbits by the Minor Planet Center (MPC). The MPC is delegated by the International Astronomical Union with organizing the cataloging of minor bodies in the solar system. G.V. Williams (*) • T.B.
Timothy B. Spahr, G. V. Williams
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Astronomische Nachrichten, 1982
AbstractWe represent 266 positions of 77 minor planets determined from plates taken in 1972 and in 1979–1980 with the Schmidt telescope 1340/2000/4000 of KARL SCHWARZSCHILD Observatory Tautenburg.
F. Börngen +2 more
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AbstractWe represent 266 positions of 77 minor planets determined from plates taken in 1972 and in 1979–1980 with the Schmidt telescope 1340/2000/4000 of KARL SCHWARZSCHILD Observatory Tautenburg.
F. Börngen +2 more
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Minor planets and comets in libration about the 2:1 resonance with Jupiter
, 1975We examine the orbits of minor planets in a search for objects librating about the 2:1 mean-motion resonance with Jupiter. Some 30 candidates are found among the Palomar-Leiden Survey and other unnumbered minor planets. Although almost all the orbits are
F. Franklin +3 more
semanticscholar +1 more source
Polarimetry of Solar System minor bodies and planets
The Astronomy and Astrophysics ReviewS. Bagnulo +5 more
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Photographic observations of Minor Planets
Astronomische Nachrichten, 1928H. van Gent, C. Jackson, H. E. Wood
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