Two amateur astronomers in Russia are credited with finding the object, known as Comet ISON and so named for the International Scientific Optical Network that made the discovery.
“The object was slow and had a unique movement. But we could not be certain that it was a comet, because the scale of our images are quite small and the object was very compact,” Artyom Novichonok, wrote on a comets mailing list hosted on Yahoo.
Follow-up observations as well as a search of archived images of the area confirmed the discovery, which was officially reported on Sept. 24, three days after Novichonok and Vitali Nevski found the object far beyond Jupiterâ€™s orbit.
The International Astronomical Union’s Minor Planet Center predicts Comet ISON could be visible without binoculars or telescopes to skywatchers on Earth from early November through the first few weeks of January 2014.