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Search Programs for Comets

Published online by Cambridge University Press:  19 July 2016

B. G. Marsden
B. G. Marsden*
Affiliation:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, U.S.A. E-mail MARSDEN@CFA.HARVARD.EDU

Abstract

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Although there are currently no professional search programs specifically designed for comets, comet discoveries are a significant by-product of the current search programs for near-earth asteroids. With their emphasis on the opposition point and the ecliptic, asteroid patrols are clearly biased toward discovering short-period comets. A. comparison of the comet discoveries made at elongations of less than 120° from the sun during the ten-year intervals ending in 1892 and 1992 indicates that the current opposition searches are not able to displace visual searches in the vicinity of the sun. Modification of the near-opposition search region to that proposed for the Spaceguard Project would be helpful, but—as also proposed for Spaceguard—supplementation is still necessary for high-inclination objects. CCD experimentation in the regions traditionally searched visually by amateurs would be useful. Searches for particular types of object like Kreutz sungrazers and comets near Jupiter in space are briefly discussed.

Type
Search Programs
Information
Symposium - International Astronomical Union , Volume 160: Asteroids, Comets, Meteors 1993 , 1994 , pp. 1 - 16
Copyright
Copyright © Kluwer 1994 

References

Carusi, A., Kresák, Ľ, Kresáková, M. and Valsecchi, G. B.: 1991, “Observations of Periodic Comet d'Arrest in 1678 and implications for its evolutionary history.” Astron. Astrophys., 252,377–384.Google Scholar
Drummond, J., Rabinowitz, D. and Hoffmann, M.: 1993, “On the search for near-earth asteroids.” In Resources of Near-Earth Space, (Lewis, J.S., Ed.), in press, Univ. of Arizona Press.Google Scholar
Everhart, E.: 1967a, “Comet discoveries and observational selection.” Astron. J., 72,716–726.CrossRefGoogle Scholar
Everhart, E.: 1967b, “Intrinsic distributions of cometary perihelia and magnitudes.” Astron. J., 72,1002–1011.Google Scholar
Kresák, Ľ.: 1982, “Comet discoveries, statistics and observational selection.” In Comets, (Wilkening, L., Ed.), 56–82, Univ. of Arizona Press.Google Scholar
Marsden, B. G. and Steel, D. I.: 1993, “Warning times and impact probabilities for long-period comets.” In Hazards due to Comets and Asteroids, (Matthews, M. S., Ed.), in press, Univ. of Arizona Press.Google Scholar
Morrison, D., et al.: 1992, The Spaceguard Survey, NASA, Washington.Google Scholar
Rudenko, M.: 1986, “Catalogue of cometary discovery positions.” Internat. Comet Q., 8,117–129.Google Scholar
Tancredi, G. and Lindgren, M.: 1992, “The vicinity of Jupiter: a region to look for comets.” In Asteroids, Comets and Meteors 1991, (Harris, A. W. and Bowell, E., Eds.), 601–604, Lunar and Planetary Inst., Houston.Google Scholar
Tancredi, G. and Lindgren, M.: 1993, “Searching for comets encountering Jupiter.” Icarus, submitted.CrossRefGoogle Scholar