C/2012 J1 (Catalina) is a distant non-periodic comet that only came within 3.16 AU (473 million km) from the Sun during its perihelion in December 2012. It is one of several comets discovered by the Catalina Sky Survey.
Physical characteristics Observations conducted between March 2013 and May 2014 recorded three outburst events that brightened the comet between 0.2 and 2.99 magnitudes temporarily. Assuming a geometric albedo of 0.04, its nucleus is estimated to have an effective radius of around 3.3 km (2.1 mi). Spectroscopic and polarimetric analysis of the comet had determined a gas production rate of around 3.7×1023 molecules per second during perihelion.
References
External links C/2012 J1 at the JPL Small-Body Database C/2012 J1 at Seiichi Yoshida's website