Research in planetary astronomy and operation of the Mauna Kea Observatory

Details Research in planetary astronomy and operation of the Mauna Kea Observatory Research in planetary astronomy and operation of the Mauna Kea Observatory

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988plas.rept...35c&link_type=abstract

In NASA, Washington, Reports of Planetary Astronomy, p 35-36 (SEE N89-16624 08-89)

Astronomy and Astrophysics

Astronomy

Asteroids, Astronomy, Cometary Atmospheres, Comets, Planetary Atmospheres, Planetary Surfaces, Pluto (Planet), Spectrophotometry, Charon, Iapetus, Ice, Io, Telescopes, Uranus Satellites

Scientific paper

Spectroscopic studies with ground-based telescopes at low resolution can give compositional information of the surfaces and atmospheres of planets, satellites, asteroids, and comets. Solid state absorptions in ices and minerals are measurable by the low-resolution spectrophotometric technique. This program includes spectroscopy of distant comets, asteroids of particular interest in various contexts (planet crossers, outer main belt, trojans, etc.), Pluto and Charon, and planetary satellites of particular interest (Iapetus, Io, Uranian satellites, etc.). In the case of planets, satellites, and comets, emphasis is placed on volatiles (ices and organics), while for asteroids the stress is on mineralogy and the connection with the meteorites. New spectra show that the IR signature of Triton has changed since 1980, in that the methane bands are significantly weaker. Spectral evidence for the presence of molecular nitrogen remains convincing. Also, the brightness of Triton throughout its orbital cycle was measured to higher precision than before and was found to be constant to better than 0.02 mag. Suggestive spectral evidence was found for the presence of the C-H stretching mode band in diffuse reflection on asteroid 130 Elektra.

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