Schwassmann-Wachmann 1, Comet

Schwassmann-Wachmann 1, Comet

 short-period comet discovered photographically by the German astronomers Friedrich Carl Arnold Schwassmann and Arthur Arno Wachmann in 1927. It has the most nearly circular orbit of any comet known (eccentricity 0.131) and remains always between the orbits of Jupiter and Saturn, having an orbital period of 16.4 years. It is also remarkable for outbursts in its brightness, which sometimes increases by several magnitudes in a matter of hours. These outbursts are determined to be the result of the transient development of a coma (faint atmosphere) of gas and dust, but, because this event occurs at random along the comet's orbit, it cannot be explained by variations in solar heating of the comet's nucleus. Rather, it is thought to be caused by heat-evolving chemical reactions occurring inside the nucleus or from the buildup and occasional release of internal gas as solar radiation gradually evaporates volatile materials below the crust of the nucleus.

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Universalium. 2010.

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  • 73P/Schwassmann-Wachmann — Infobox Comet name=73P/Schwassmann Wachmann discoverer= Arnold Schwassmann Arno Arthur Wachmann discovery date=May 2, 1930 designations=1930 VI; 1979 VIII; 1990 VIII; 1994w epoch=March 6, 2006 semimajor=3.063 AU perihelion=0.9391 AU… …   Wikipedia

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  • 73P/Schwassmann-Wachmann 3 — 73P/Schwassmann Wachmann Pour les articles homonymes, voir Wachmann. 73P/Schwassmann Wachmann Fragment B de la comète 73P, vu par le télescope spatial Hubble …   Wikipédia en Français

  • 73P/Schwassmann Wachmann — Pour les articles homonymes, voir Wachmann. 73P/Schwassmann Wachmann Fragment B de la comète 73P, vu par le télescope spatial Hubble …   Wikipédia en Français

  • 31P/Schwassmann-Wachmann — Infobox Comet name=31P/Schwassmann Wachmann discoverer= Arnold Schwassmann Arno Arthur Wachmann discovery date=January 17, 1929 designations=1929 I; 1935 III; 1942 I; 1948 VII; 1955 I; 1961 VII; 1968 II; 1974 XIII; 1981 VI; 1987 XIX; 1994 II… …   Wikipedia

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