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Photographer:

Mike Olason

Email:

moicylander@centurylink.net

Location of Photo:

Denver Colorado

Date/Time of photo:

26 October 2017, 1001UT

Equipment:

11" SCT f/6.4 and STF-8300M CCD Camera

Description:

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 about 100 times brighter than 219P which made it a little difficult to make either comet look good in this image.

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