Infrared observations of the extinct cometary candidate minor planet (3200) 1983TB

Details Infrared observations of the extinct cometary candidate minor planet (3200) 1983TB Infrared observations of the extinct cometary candidate minor planet (3200) 1983TB

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985mnras.214p..29g&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 214, June 1, 1985, p. 29P-36P. Research supported by th

Astronomy and Astrophysics

Astronomy

42

Apollo Asteroids, Astronomical Photometry, Comet Nuclei, Infrared Astronomy, Albedo, Astronomical Models, Colorimetry

Scientific paper

The discovery of Apollo asteroid (3200) 1983TB in an orbit virtually coincident with the Geminid meteor stream has raised the possibility that it is an extinct cometary nucleus. Infrared observations between 1 and 20 microns are presented from which an albedo of 0.11 + or - 0.02 and diameter of (4.70 + or - 0.5) km are derived. Both the thermal spectrum (which implies a surface of relatively high conductivity) and the reflected colors, disagree with the expected properties of an extinct cometary nucleus. However, the blue JHK colors and moderate albedo, when combined with optical data, show 1983TB to be a unique object among the known Apollo asteroids.

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