I saw this announcement recently on the Space.com website – Don’t miss Jupiter, Saturn and Mercury shine in a triple-conjunction this weekend: https://www.space.com/jupiter-saturn-mercury-triple-conjunction-approach-january-2021. Worth a read if you are into things space-related. There are photos in the link. Much longer article, but here’s some basic information.
By Joe Rao January 8, 2021
It happens after sunset on Sunday, Jan. 10!
Low in the southwestern evening sky just 30 to 45 minutes after sundown, we’ll be treated to what might be referred to as a celestial summit meeting, a triple conjunction, with the three planets fitting within a circle smaller than 5 degrees.
Brilliant Jupiter (magnitude –1.9), medium-bright Mercury (-0.9) and dimmer, yellow-white Saturn (+0.6) will be contained within a 5-degree circle from Jan. 8 to Jan. 12, appearing closest together on Sunday evening (Jan. 10).
What will make this array particularly fascinating is how the configuration will change noticeably from one evening to the next. This effect is primarily due to the rapid motion of speedy Mercury relative to the two slow-moving wanderers, Jupiter and Saturn. The pattern will go from a stretched-out triangle on Jan. 8 to an almost equilateral triangle on Jan. 10.
However, binoculars are strongly suggested, as they will help pick up the planets against the bright twilight sky. Jupiter will be at the top of the triangle and is the brightest of the trio, with Mercury and Saturn forming the base angles. The sides of the triangle each measure roughly 2 degrees.