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08/22/2019 – Ephemeris – Scanning the Milky Way in and around Sagittarius

August 22, 2019 Comments off

Ephemeris for Thursday, August 22nd. Today the Sun will be up for 13 hours and 44 minutes, setting at 8:37, and it will rise tomorrow at 6:54. The Moon, 1 day before last quarter, will rise at 12:10 tomorrow morning.

Tuesday I talked about finding the teapot shaped asterism or informal shape in the stars where the constellation Sagittarius is. Once that is found, a pair of binoculars will help find many fuzzy wonders in the Milky Way here. Mostly we are looking at the next spiral arm in toward the center of the Milky Way galaxy. The star clusters and nebulae here are from 5,000 to 10,000 light years away, a good deal farther than the Great Orion Nebula we see in winter, which is much closer. We are also looking at a much brighter and more populous arm of the Milky Way than the one the Sun happens to be in. We are in a vast spiral galaxy whose center is 27,000 light years away beyond the star and dust clouds above the teapot’s spout.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

The sky around Sagittarius and Scorpius at 10 p.m. August 22, 2019. The objects noted will appear as fuzzy objects in binoculars. Dotted circles are open or galactic star clusters which are easily resolved in small telescopes. Crossed circles are globular star clusters, which require larger telescopes to resolve. Squares are emission nebulae, bright clouds of gas, illuminated by the young stars born within them. Click on the image to enlarge. Created using Stellarium.

We call these objects Deep Sky Objects or DSOs.  Unnamed objects are dimmer than named objects.