If you're a keen observer of the night sky, you've probably heard that the brightest comet of 201
46P / Wirtanen only comes so close to the Earth every 5.4 years. The tiny sphere of green light can be seen with the naked eye, but best through binoculars or a telescope. The approach to the closure actually took place this morning, when the comet was only 7,199,427 miles from Earth, or about the distance it needed for 30 trips to the Moon. Although this may seem like a long shot, it is astronomically pretty close. This passage is especially great as 46P has made the passage in centuries and has been restored for centuries.
With the help of the constellation Orion you can see the tiny green ball of space debris in the coming days. Find Orion in the night sky (easy to distinguish from the stars that make "Orion's Belt"). The comet 46P will pass to the right of the constellation and every night will be positioned a little higher in the night sky. The sky is clearing tonight as the pressure increases and the sky stays clear until Wednesday morning. So you have ample opportunity to see the event.
The comet will be visible in early January, but keep in mind that the glow of the comet is weakening day by day. So if you really want to see it, I would suggest that you leave in the next few days. The only problem is the moon. The next mornings will not be until after midnight. The moon will depart at 1:05 am on Monday, 2:04 am on Tuesday, and at 3:05 am on Wednesday. The moon is also growing full and is starting to move from half of its half into its growing phase. Once the moon has set, you should be able to detect the faint green glow when you are in a remote environment (away from city lights). Have a jacket with you, because the next nights it is freezing cold. "
The constant passes of Comet 46P / Wirtanen's Sun are a real tribute to the ice-ball. Due to the repeated passes, a large part of the ice was dropped and therefore there is now all material left over that could form a bright "tail". Another reason for the weak nature of 46P are the extremely small cores (core). The cores of 46P are only 0.7 miles wide. It is one of the smallest comets known to scientists.
Do not miss the opportunity to see a pretty cool sight in the night sky. It will not be even 5.4 years back!