Mercury is about as high as it’s going to get in the eastern predawn sky on the 12th, and will start getting lower each morning. Sirius is high in the sky, and the constellation Canis Major is now fully visible above the southeastern horizon before sunrise. Mercury and Mars will appear very close to each other in the eastern predawn sky on the 16th.
Saturn continues to be a great observing target in the southern sky after sunset.
The Moon will be in conjunction with the star Aldebaran on the morning of the 12th, and will appear between(ish) the stars Aldebaran and Betelgeuse on the 13th.
The eastern predawn sky on the 18th should look pretty interesting: Mercury, Mars, a sliver of a waning crescent Moon, the star Regulus and Venus will all appear in a line.
Sunspot AR2680 has rotated into view; this sunspot is about the same size as AR2673 was from last week – which ballooned out and blew off two of the largest solar flares we’ve seen in quite a few years… so we’ll be keeping a wary eye on this sunspot.
AR2673 and AR2674 have rotated out of view, large coronal loops associated with AR2674 can still be seen on the limb of the Sun (right side of image below).
This video shows a very active corona between Sept. 10-12, 2017:
Apps used for this post:
Stellarium: a free open source planetarium app for PC/MAC/Linux.
NASA Eyes on the Solar System: an immersive 3D solar system and space mission app – free for the PC /MAC.