Discovery and physical properties of Dactyl, a satellite of asteroid 243 Ida

@article{Chapman1995DiscoveryAP,
  title={Discovery and physical properties of Dactyl, a satellite of asteroid 243 Ida},
  author={Clark R. Chapman and Joseph Frank Veverka and P. Thomas and K. P. Klaasen and Michael J. S. Belton and Ann P. Harch and Alfred S. McEwen and Torrence V. Johnson and P Helfenstein and Michael E. Davies and W. J. Merline and Tilmann Denk},
  journal={Nature},
  year={1995},
  volume={374},
  pages={783-785}
}
OBSERVATIONS of stellar occultations by asteroids have suggested that some may have satellites1. But given the absence of any confirmatory evidence, the prevailing view has been that although such satellites probably do exist, they are likely to be rare2. Here we report the discovery3 by the Galileo spacecraft of a satellite associated with the asteroid 243 Ida. Although the satellite, Dactyl, is only 1.6km across, it has been imaged with sufficient resolution for geological analysis. We… Expand
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References

SHOWING 1-10 OF 13 REFERENCES
Bulk density of asteroid 243 Ida from the orbit of its satellite Dactyl
DURING its reconnaissance of the asteroid 243 Ida, the Galileo spacecraft returned images of a second object, 1993(243)1 Dactyl1— the first confirmed satellite of an asteroid. Sufficient data wereExpand
Spectral Variations within the Koronis Family: Possible Implications for the Surface Colors of Asteroid 243 Ida
Abstract Asteroid 243 Ida, a flyby target for the Galileo spacecraft, is a member of the Koronis family which likely formed from the collisional disruption of a single larger parent body. WeExpand
The absence of satellites of asteroids
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, 41Expand
Mineralogical Variations within the S-Type Asteroid Class
Abstract A systematic spectral analysis has been Carried out on a large subset (39 of 144) of the S-type asteroid population. The S-asteroid class includes a number of distinct compositional subtypesExpand
Collisional evolution in the Eos and Koronis asteroid families: observational and numerical results
Abstract Recent observational results ( R.P. Binzel 1987 , Icarus 22, 135–208) are analyzed to investigate the origin and evolution of the Eos and Koronis families. Rotation rates in the Eos familyExpand
First Images of Asteroid 243 Ida
TLDR
The first images of the asteroid 243 Ida from Galileo show an irregular object measuring 56-kilometers by 24 kilometers by 21 kilometers with high crater density and size-frequency distribution, indicating a surface in equilibrium with saturated cratering. Expand
Collisional Evolution of Asteroid Families
Abstract Most asteroid dynamical families are thought to be the outcomes of collisional disruption of parent asteroids destroyed by high-velocity impacts with other astroids. However, subsequentExpand
Galileo Encounter with 951 Gaspra: First Pictures of an Asteroid
TLDR
Galileo images of Gaspra reveal it to be an irregularly shaped object that appears to have been created by a catastrophic collisional disruption of a precursor parent body. Expand
The generation and use of numerical shape models for irregular Solar System objects
We describe a procedure that allows the efficient generation of numerical shape models for irregular Solar System objects, where a numerical model is simply a table of evenly spaced body-centeredExpand
Optical effects of space weathering: The role of the finest fraction
The optical properties of lunar softs are different than those of rocks from which they are derived. As a consequence of lunar space weathering, soils are darker and exhibit a distinctive red-slopedExpand
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