title: Comet Sugano-Saigusa-Fujikawa (1983V)--a small, puzzling comet.
abstract: Spectroscopic and infrared observations of Comet Sugano-Saigusa-Fujikawa (1983V) were obtained during its close approach to the Earth on 11-14 June 1983.  The [O I] production rates of 1.8 +/- 0.9 x 10(26) atoms/s observed on 12.3 June and 7 +/- 3.5 x 10(26) atoms/s on 13.4 June lead to derived water-production rates of 3 x 10(27) mol/s on 12 June and 1.1 x 10(28) mol/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 our infrared and visual photometry on 12-13 June (assuming that the entire signal came from the nucleus) is approximately 370 m.  The dust/gas mass ratio was <0.01 on June 12 and <0.005 on June 13.
authors.affiliation: Jet Propulsion Laboratory, California Institute of Technology, Pasadena 91109, USA.
authors.forename: M S
authors.initials: MS
authors.lastname: Hanner
authors.forename: R L
authors.initials: RL
authors.lastname: Newburn
authors.forename: H
authors.initials: H
authors.lastname: Spinrad
authors.forename: G J
authors.initials: GJ
authors.lastname: Veeder
mesh_terms: D055580:Astronomical Phenomena; D001256:Astronomy; D002244:Carbon; D019443:Cosmic Dust / Q000032:analysis*; D019110:Meteoroids; D008962:Models, Theoretical; D017672:Nitrogen Compounds; D010100:Oxygen; D013055:Spectrophotometry, Infrared; D014867:Water
chemical_list: D019443:Cosmic Dust; D017672:Nitrogen Compounds; D014867:Water; D002244:Carbon; D010100:Oxygen