Computer Science
Scientific paper
Jan 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978sci...199...66p&link_type=abstract
Science, vol. 199, Jan. 6, 1978, p. 66-69.
Computer Science
9
Albedo, Carbonaceous Chondrites, Phobos, Spectral Reflectance, Basalt, Density Measurement, Goniometers, Planetary Composition, Viking Lander Spacecraft, Satellites, Mars, Phobos, Reflectivity, Carbonaceous Chondrites, Color, Meteorites, Ultraviolet, Wavelengths, Spectroscopy, Viking Missions, Landers, Cameras, Spacecraft Observations, Composition
Scientific paper
The reflectivity of Phobos has been determined in the spectral region from 0.4 to 1.1 micrometers from images taken with a Viking lander camera. The reflectivity curve is flat in this spectral interval and the geometric albedo equals 0.05 + or - 0.01. These results, together with Phobos's reflectivity spectrum in the ultraviolet, are compared with laboratory spectra of carbonaceous chondrites and basalts. The spectra of carbonaceous chondrites are consistent with the observations, whereas the basalt spectra are not. These findings raise the possibility that Phobos may be a captured object rather than a natural satellite of Mars.
Ajello Joseph M.
Colburn David S.
Lane Arthur L.
Pang Kevin D.
Pollack James B.
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