Occultations of SAO Stars and IRAS Point Sources by Planets: 1988-1999
- D.J. Mink
- Harvard-Smithsonian Center for Astrophysics
A search of the SAO Star Catalog and the IRAS Point Source Catalog has been
made for close approaches to stars by Mercury, Venus, Mars, Jupiter, Saturn,
Uranus, Neptune, and Pluto. Circustances are presented for 314
close approaches by planets to stars in the SAO catalog and 316 close
approaches to point sources in the IRAS Point Source Catalog between
1 January 1988 and 31 December 1999. 71 occultations of IRAS point sources
and 42 occultations of SAO stars were found. Few easily observable
occultations were discovered as most occulted stars are much fainter than
the planet occulting them. In addition to the previously known occultations
of SAO 187255 by Saturn on 3 July 1989, SAO 189232 by Uranus on 16 March
1996, and SAO 188797 by Neptune on 29 November 1997, occultations of
fifth-magnitude 187445 by Jupiter on 6 March 1996 and sixth-magnitude
SAO 164156 by Jupiter on 13 November 1997 were found. SAO 187255 is
IRAS 18433-2227, the brightest point source occulted in this period.
Other notable IRAS occultations are that of IRAS 06279+2330 by Mars on
24 September 1992 and that of IRAS 18456-231620 on 20 October 1996. As
IRAS positions have fairly large errors, forecasts of these events are
quite uncertain. These results are presented for the use of observers
searching for material in the vicinity of planets, for those who need
close bright stars for the improvement of ground-based images of planets,
and for those who wish to avoid contamination of their data by invisible,
bright IR sources.
Tables of SAO
Tables of IRAS
Presented as a poster talk at the 1987 meeting of the Division for
Planetary Sciences of the American Astronomical Society in Pasadena,
California, October 1987.
Abstract in the Bulletin of the American Astronomical Society
volume 19, page 1150 (1987).