Star profile

Beta Coronae Australis

3D likeness based on its real data · class K · ~4,200 K

What is Beta Coronae Australis

Beta Coronae Australis is an orange giant that has burned through the hydrogen in its core and swollen to 39 times the Sun's diameter. It shines with more than 600 solar luminosities and carries a rare abundance of cyanogen in its atmosphere—a chemical fingerprint that marks it as a CN star to spectroscopists. It crowns the small southern arc the ancients called the Southern Crown, 474 light-years away.

Where it is and when to see it

Beta Coronae Australis lies in the southern celestial hemisphere. It is visible to the naked eye under a dark sky. Its best month of the year is July, when it culminates around midnight.

From London it never rises above the horizon.
From New York it culminates about 10° above the horizon.
From Sydney it culminates about 85° above the horizon.

It can be seen from anywhere south of 51° N.

It is the brightest of the 29 stars of Corona Australis in our catalogue, which makes it the best starting point for finding your way around the constellation.

The light you see today left it about 470 years ago.

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Astronomical data for Beta Coronae Australis

Constellation: Corona Australis
Apparent magnitude: 4.10
Distance: 474.1 light years
Coordinates (J2000): RA 287.507° · Dec -39.341°
Catalogue: HIP 94160 · HD 178345

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Other stars in Corona Australis

Corona Australis has 29 stars in Stelvia's catalogue. Here are a few of them.

See all 29 stars in Corona Australis