The opposition effect and the surface structure of the asteroid 16 Psyche

Details The opposition effect and the surface structure of the asteroid 16 Psyche The opposition effect and the surface structure of the asteroid 16 Psyche

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pazh....6..184l&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 6, Mar. 1980, p. 184-188.) Soviet Astronomy Letters, vol. 6, Mar.-Apr. 1980, p. 102-104

Astronomy and Astrophysics

Astronomy

4

Asteroids, Astronomical Photometry, Planetary Surfaces, Brightness, Iron Meteorites, Light Curve, Microstructure, Space Exploration, Surface Properties

Scientific paper

B, V photometry of the M-type asteroid 16 Psyche carried out in 1978 yields the ecliptic coordinates of its pole (lambda = 222 deg, beta = +4 deg) and improved values for its absolute magnitude (5.64 m) and diameter (270 km). A larger opposition effect is measured for Psyche than for any other asteroid or the moon. To explain this circumstance a qualitative model is proposed for the microstructure relief on this metallic asteroid: its surface layer is attributed to meteoritic bombardment, perhaps accompanied by an intrinsic magnetic field.

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