"The 2009 Apparition of Methuselah Comet 107P/Wilson-Harrington: A Case of Comet Rejuvenation?"
classification
🌌 astro-ph.EP
keywords
cometcometsfindgraveyardmeasuredmethuselahwilson-harringtonactive
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(1) We find that comet 107P/WH was active in 1949, 1979, 1992, 2005, and 2009. (2) Its age can be measured. We find T-AGE=4700 comet years, WB-AGE=7800 cy. (3) This is a methuselah comet very near to its dormancy phase, being temporarily rejuvenated due to a diminution of its perihelion distance. (4) We measured the diameter as Deffe=3.67\pm0.06 km, and the rotational period, Prot=6.093\pm0.002 h. (5) We define the region of the graveyard of comets, and three comets belong to the graveyard: 107P/Wilson-Harrington, 133P/Elst-Pizarro and D/1891W1 Blanpain.
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