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The Winter 2010 issue of The Earth Scientist includes a variety of educational resources, ranging from astronomy to glaciers. Check out the other publications and classroom materials in our online store.

Comets

year
found
closest distance
from Sun (AU)
time to orbit
Sun (years)
next or most recent
pass by Sun
Arend-Roland 1956 0.316 ? ?
Bennett 1970 0.538 ? ?
Biela 1772 0.861 6.62 ?
Borrelly 1904 1.358 6.68 2001
Brorsen-Metcalf 1847 0.479 70.6 2060
Chiron 1977 ? 51 2047
Churyumov-Gerasimenko 1969 1.29 6.57 2009
d'Arrest 1851 1.291 6.38 2001
Donati 1858 0.578 ? ?
Encke 1786 0.341 3.31 2003
Giacobini-Zinner 1900 1.028 6.59 1999
Grigg-Skjellerup 1808
1902 (rediscovered)
.989 5.09 ?
Hale-Bopp 1995 0.9143 4000 1997
Halley ? 0.587 76.09 2062
Hyakutake 1996 0.23 ~30,000 ~31,500
Ikeya-Seki 1965 0.008 880 2845
IRAS-Araki-
Alcock
1983 0.991 ? ?
Kohoutek 1973 0.142 ? ?
Lexell 1770 0.674 5.60 ?
Linear 1999 0.762 ? ?
Morehouse 1908 0.945 ? ?
Mrkos 1957 0.355 ? ?
Schwassmann-
Wachmann 1
1908 5.448 15 2004
Schwassmann-
Wachmann 3
1930 .937 5.36 2006
Shoemaker-Levy 9 1993 collided with Jupiter in 1994
Swift-Tuttle 1862 0.963 120 ?
Tempel 1 1867 1.5 5.51 2005
Tempel 2 1873 1.381 5.29 1999
West 1976 0.197 ? ?
Wild 2 1978 1.583 6.39 2003
Wirtanen 1948 1.063 5.46 2013

Last modified January 9, 2004 by Randy Russell.

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