It's a comet with period of 6.47 years discovered in 1986.
This 4th return has fairly good observating condition, the comet was be a naked-eye comet with 5th magnitude or so in autumn of 2010.
A short periodic comet of 5.37 years discovered in 1873.
This is 26th return after its discovery, observed with 8th magnitude in southeast skies in summer of 2010.
This is a newly discovered comet on Sep 9, 2009 by Mr. R.H. McNaught in Siding Spring observatory, Australia.
The comet started to be observed from May 2010 in eastern dusk skies, brightened about 5th magnitude in Jun 2010.
This is a newly discovered comet on May 27, 2009 by Mr. R.H. McNaught in Siding Spring observatory, Australia.
The comet started to be observed from Mar 2010 in eastern dusk skies with its brightness of about first magnitude brighter than the prediction,
became about 8th magnitude or so in April.
A 6.42 years periodic comet discovered in 1978.
This is the 5th return of the comet, could be observed with 9 or 10th magnitude in southern skies before dawn in Jan to Mar 2010.
This comet is also known that a spacecraft of Stardust launched by NASA has visited, and succeeded to return a sample capsule of comet's dust for the first time.
Newly discovered comet on Aug 25, 2007 at Siding Spring Observatory in Australia.
The comet could be observed with 9th or 10th magnitude in brightness in end of 2009 to beginning of 2010.
This comet was discovered by a Japanese seeker of Mr. Kouichi Itagaki on Mar 14, 2009. In March 2009, the comet can be observed in western dusk skies in March.
It's a 7.6 years periodic comet discovered by a Japanese comet seeker Mr. Yoshio Kushida in 1994.
This is the 3rd return of the comet from its discovery, and became brighter than its prediction, it will be about 8th magnitude in Jan & Feb 2009.
It's a 5.4 years periodic comet discovered in 1948. The comet was observed in evening skies from Jan to Mar 2008 under good condition,
brightened up to about 8th magnitude.
It's a 13.6 years periodic comet discovered in 1858. This time is the 11th return and it was observed with about 6th magnitude in brightness in Jan 2008.
It's a 6.88 years periodic comet discovered in 1892. On Oct 25, 2007, the comet had an extraordinary big outburst and brightened its magnitude from 17th to 2nd or so, became a naked eye comet suddenly.
A round shaped coma was observed in northern autumnal night skies.
It's a newly discovered comet by Lowell Observatory searching team on Mar 19, 2007. The comet was observed in lower evening sky with a brightness of 6th magnitude in Oct 2007.
It's a 5.24 years periodic comet discovered in 1986, this is fourth return since its discovery.
The comet grazed the sun in beginning of Apr 2007 and brighten up to about 1st magnitude.
And its dimmed figure could be observed in lower dawn sky from end of the month.
It's a newly discovered comet with 10th magnitude coma by an Australian observer Mr. Terry Lovejoy on Mar 15, 2007.
The comet appeared in lower southeast skies from Apr 2007 at northern hemisphere, and the comet brightened about 8th magnitude in maximum.