マックノート彗星 (260P McNaught )

Discovery　 Comet 260P/McNaught is a recently discovered periodic comet that can reach 13 magnitude at a favourable return. It is another member of Jupiter's "family" of comets and has a perihelion distance of about 1.6 AU, and an aphelion just beyond the orbit of Jupiter. The 2012 return was fairly favourable and the comet peaked in brightness at around 14th magnitude and displayed a fairly long straight tail.

出典:Comet 260P/McNaught http://www.phys.ttu.edu/~ozprof/260p.htm