Comets 219P/LINEAR And C/2015 ER61 PANSTARRS
Taken by Mike Olason on October 26, 2017 @ Denver, Colorado
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Comets 219P/LINEAR and C/2015 ER61 PANSTARRS were both moving at about 1/4 degree per day to the WSW in this image. They are 1/4 degree apart with 219P 175 million miles from Earth and ER61 163 million miles from Earth. Both comets were at perihelion earlier this year. 219P has a 7 year orbit and ER61 has a 7,807 year orbit. Interestingly, both comets tails point in the general direction that they are moving. ER61 is 100 times brighter than 219P in this image.
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