Comet 65P/ Gunn

Comet 65p/ Gunn is a rather faint periodic comet that has a relatively small eccentricity, orbiting between the orbits of Mars and Jupiter. If it were not for the cometary activity, it would most likely be considered an asteroid. As a result of the low eccentricity, and the relative closeness to the Sun, the comet is visible at all points on its orbit. Thus it is known as an "annual" comet. However because it never comes particularly close to wither the Earth or the Sun, it always remains quite faint, 15th magnitude or fainter. For the first few of the images shown below, the comet was around 15th magnitude, and displays a very faint tail towards the upper right. However when the final image was taken, the comet was more than 3.8 AU from both the Earth and the Sun, and around magnitude 17, with no tail visible.


Comet 65p/ Gunn. February 22, 2002.
Combination of 4, 1 minute images, SBIG ST-8E CCD.
8" f/16.3 schmidt-cassegrain at prime focus.


Comet 65p/ Gunn. March 17, 2002.
Combination of 3, 1 minute images, SBIG ST-8E CCD.
8" f/16.3 schmidt-cassegrain at prime focus.


Comet 65p/ Gunn. May 5, 2002.
Combination of 2, 1 minute images, SBIG ST-8E CCD.
8" f/16.3 schmidt-cassegrain at prime focus.


Comet 65P/ Gunn. December 16, 2004.
January 7, 2005.
Combination of 5, 2 minute images, SBIG ST-8XE CCD.
18" f/10.5 Ritchey-Chrétien cassegrain at prime focus.