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Start Over Creator Ferraz-Mello, S.

1. On the origin of gaps in the distribution of minor planets

Creator:
Ferraz-Mello, S.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
planetary theories, minor planets, and three-body problem
Language:
Czech
Description:
An analytical averaging theory founded on the elliptic restricted three-body problem and valid for libration motions shows that there are forbidden intervals in the distribution of the mean semi-major axes at the resonance (p+1) : p. The actual asteroids may cross these gaps but they cannot remain there. Some 15 of the presently known Hildas are in the gap and some of them may cross it completely. The Griquas are presently at the left of the gap but some of them periodically cross the gap.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

2. Orbital resonances amongst planetary satellites

Creator:
Ferraz-Mello, S.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
space research, orbital resonances, and planetary satellites
Language:
Czech
Description:
Thls review emphasizes the great deal of work devoted in the past 15 years to the construction of formal theories of the motion of resonant satellites. The importance of formal theories and they fundamental concepts are also discussed. We consider the kernels derived by Jefferys and Ries, Sessin and Hori for the construction of formal theories for mutually perturbing satellites. Some recent results concerning the determinations of the parameters of libration of several systems as well as the accelerations of the Galilean satellites and of Mlmas are also presented.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public