منابع مشابه
Invited Review The geology of 433 Eros
1Center for Planetary Sciences, Northwestern University, 1850 Campus Drive, Evanston, Illinois 60208, USA 2Center for Radiophysics and Space Research, Cornell University, Ithaca, New York 14850, USA 3Department of Astronomy, Cornell University, Ithaca, New York 14850, USA 4The John Hopkins University Applied Physics Laboratory, 11100 John Hopkins Road, Laurel, Maryland 20723, USA 5Hawaii Instit...
متن کاملNEAR Magnetic Field Observations at 433 Eros: First Measurementsfrom the Surface of an Asteroid
The magnetometer investigation aboard the NEAR-Shoemaker spacecraft has obtained extensive magnetic field observations throughout the 433 Eros environment, from distances in excess of 100,000 km to those conducted after landing on 12 February 2001. We report the apparent absence of global scale magnetization at this asteroid (H < 0.005 A · m−1; natural remanent magnetization per kilogram < 1.9 ...
متن کاملSpectral properties and rotational spectral heterogeneity of 433 Eros
Composite spectra of different rotational aspects of the S asteroid 433 Eros were assembled from previous studies, covering the wavelength range 0ø33-2.5 grn. These data allow us to measure significant attributes of Eros's spectrum• its mafic mineral absorptions, and the degree and nature of compositional heterogeneity of its surfaceo We also evaluated previous Sasteroid taxonomies using indepe...
متن کاملThe spin state of 433 Eros and its possible implications
In this paper, we show that Asteroid (433) Eros is currently residing in a spin–orbit resonance, with its spin axis undergoing a smallamplitude libration about the Cassini state 2 of the proper mode in the nonsingular orbital element sin I/2 exp(ıΩ), where I the orbital inclination and Ω the longitude of the node. The period of this libration is 53.4 kyr. By excluding these libration wiggles, w...
متن کاملNew VLBI observations of SS 433
The unique object SS433 is brieey reviewed with particular reference to the part played by the stellar wind ejected by the early type companion star. The aims of this observational campaign are described and the theory of the mass loss rate measurements explained. VLBA 1.6 GHz maps are presented as well as preliminary 23 GHz VLA and MERLIN maps. Mass loss rates of around 510 ?6 M yr ?1 are foun...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1899
ISSN: 0004-637X,1538-4357
DOI: 10.1086/140559