Results 111 to 120 of about 440 (144)

The Origins & Reservoirs of Exocomets. [PDF]

Space Sci Rev
Bannister M, Pfalzner S, Pearce T, Mustill AJ, Klahr H, Nomura H, Ohashi N, Kokotanekova R, Marino S, Bodewits D, Marschall R, Seligman DZ, Jones GH, Veras D.   +13 more
europepmc   +1 more source

Extremophile survives the transient pressures associated with impact-induced ejection from Mars. [PDF]

PNAS Nexus
Zhao L, Perez-Fernandez CA, DiRuggiero J, Ramesh KT.   +3 more
europepmc   +1 more source

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Satellites of asteroids

Physics-Uspekhi, 1995
More than 6000 asteroids in the Solar System have now been discovered and enumerated, and about 500 of them have been investigated in detail by different methods. This rewiew gives observational evidence which indicates that no fewer than 10% of asteroids may be composed of two or more bodies.
V.V. Prokof'eva, V.P. Tarashchuk, N.N. Gor'kavyi   +2 more
openaire   +1 more source

The absence of satellites of asteroids

Icarus, 1987
Abstract A CCD-imaging survey was made for satellites of minor planets at distances of about 0.1 to 7 arcmin from 1 Ceres, 2 Pallas, 4 Vesta, 6 Hebe, 7 Iris, 8 Flora, 15 Eunomia, 29 Amphitrite, 41 Daphne, and 44 Nysa, with cursory inspection of 192 Nausikaa. Satellites larger than 3 km were not found in this work, nor in previous photographic surveys.
T. Gehrels, J.D. Drummond, N.A. Levenson
openaire   +1 more source

Satellites of two large asteroids

Astronomical & Astrophysical Transactions, 1998
Abstract Various observational data obtained over a period of about 100 years have led to the assumption that some asteroids have satellites. A review of publications has allowed us to compose a list of 50 asteroids that are supposed to be binary. Asteroid 243 Ida with satellite Dactil discovered by space probe Galileo became the 51st.
V. V. Prokof'eva, L. G. Karachkina
openaire   +1 more source

On the fragmentation of asteroids and planetary satellites

Icarus, 1990
A general scaling model is defined which allows the extrapolation of small-scale collisional fragmentation experiment results, and existing collisional theories are considered within its framework. Scaling based exclusively upon the specific energy, Q, of the event (the ratio of projectile kinetic energy to the mass of the target body) is shown to hold
Kevin R. Housen, Keith A. Holsapple
openaire   +1 more source

The stable region of satellites of large asteroids

Icarus, 1988
Abstract Numerical experiments show that retrograde satellites can exist almost twice as far from a minor planet as direct satellites in the elliptic restricted four-body problem. The orbital eccentricity of the minor planet decreases the stable region of its satellite.
S.-P. Zhang, K.A. Innanen
openaire   +1 more source

Frequencies of Occultations of Stars by Planets, Satellites, and Asteroids

Science, 1972
Calculations show that several occultations of stars by the large satellites of the outer planets, Pluto, and the large asteroids could be observed each decade with existing equipment at Earth-based telescopes. A systematic program of occultation predictions and observations is urged in order to improve our knowledge about the atmospheres, sizes ...
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Attitude dynamics of satellites orbiting an asteroid

The Journal of the Astronautical Sciences, 2006
Attitude motion of satellites orbiting an asteroid is examined. The highly irregular shape of the asteroids along with their rotational states can lead to very interesting attitude dynamics. As a start, the case of uniform rotation of the asteroid is examined and attention is focused on planar attitude motion (pitch).
Arun K. Misra, Yulia Panchenko
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Asteroids with satellites: Analysis of observational data

Solar System Research, 2013
The volume of observational information on asteroids and trans-Neptunians with satellites has significantly increased in recent years. In this paper we study the dependence of asteroid duplicity on the main physical parameters of the primary: the size and rotation rate.
N. M. Gaftonyuk, N. N. Gorkavyi
openaire   +1 more source