2020, August 21: Sirius Shines in Morning Twilight

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2020: August 21, 2020: Sirius shines from low in the east-southeast during morning twilight. Brilliant Venus is higher in the sky in the east.

Sirius, the night’s brightest star, shines from the east-southeast before sunrise.

by Jeffrey L. Hunt

About a week after its first appearance (heliacal rising) in the morning sky, Sirius, the night’s brightest star, shines from the east-southeast nearly 40 minutes before sunrise.

As seen in the image above, Sirius is low in the sky.  Find an observing spot reasonably free of obstacles to see the star. It is easily visible without a binocular or telescope.  As the star rises 4 minutes earlier each day, find in higher in the east-southeast at the same time in about a week.

Here is a daily summary about the planets during August.

2021, April 18: Crescent Moon, Mars, Evening Sky

April 18, 2021:  The crescent moon is high in the west after sunset among the stars of Gemini, below Pollux and Castor.  Mars is above the Bull’s horns.  Daylight is 13 hours, 30 minutes long.

2021, April 18: Jupiter, Saturn, Morning Planets

April 18, 2021: The bright morning planets, Jupiter and Saturn, are in the southeastern sky before sunrise.  Capricornus is the starry background for this giant planet duo.  Daylight is 13 hours, 30 minutes long.



Categories: Astronomy, Sky Watching

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