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In order to observe the stars and other celestial bodies clearly, you would usually need a telescope to magnify it. But Comet 46P/Wirtanen which will pass by the Earth mid-December may be visible even to the naked eye.
Astronomer Carl Wirtanen discovered his namesake comet in 1948. He was a skilled object hunter and used photos of the night sky to spot the quickly moving object, at least astronomically speaking.
Comet 46P/Wirtanen’s orbit keeps it pretty near to the sun. Its aphelion, or farthest point from the sun, is about 5.1 astronomical units (AU), which is just a tad bigger than Jupiter’s orbit. Its perihelion, or closest approach to the sun, is about 1 AU, just about the Earth’s distance from the sun. This path takes about 5.4 years to complete, meaning it comes back into view quite frequently compared to other famous comets.
Right now, it is approaching its perihelion. Its closest point to the sun will fall on Dec. 16 – which is why it will be brightest on this day.
(Image credit: Andy Roberts/Astronomy for Beginners via Wikimedia Commons)
Source: neatorama