Comet Sugano-Saigusa-Fujikawa (1983V) - A small, puzzling comet

Details Comet Sugano-Saigusa-Fujikawa (1983V) - A small, puzzling comet Comet Sugano-Saigusa-Fujikawa (1983V) - A small, puzzling comet

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94.1081h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 94, Oct. 1987, p. 1081-1087.

Astronomy and Astrophysics

Astronomy

23

Astronomical Spectroscopy, Comets, Infrared Spectra, Chemical Composition, Comet Nuclei, Interplanetary Dust, Moisture Content, Thermal Emission, Comets, Sugano-Saigusa-Fujikawa, Spectroscopy, Infrared, Radar Methods, Wavelengths, Astronmy, Production Rate, Water, Abundance, Composition, Photometry, Comet Nuclei, Specta, Emissions, Thermal Properties, Dust, Earth-Based Observations, Telescope Methods, Gases, Oxygen, Comparisons, Nh2 Radical, C2 Radical, C3 Radical, Cn Radical

Scientific paper

Spectroscopic and infrared observations of comet Sugano-Saigusa-Fujikawa (1983 V) were obtained during its close approach to the Earth on 11 - 14 June 1983. The [O I] production rates of 1.8±0.9×1026atoms/s observed on 12.3 June and 7±3.5×1026atoms/s on 13.4 June lead to derived water-production rates of 3×1027mol/s on 12 June and 1.1×1028mol/s on 13 June. The abundances of the minor species NH2, CN, C2, and C3 are unusually low relative to [O I]. The upper limit to the average nuclear radius from the infrared and visual photometry on 12 - 13 June (assuming that the entire signal came from the nucleus) is ≡370 m. The dust/gas mass ratio was <0.01 on June 12 and <0.005 on June 13.

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