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Pavo (constellation)

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Pavo is a beautiful constellation located in the southern sky. Its name is the Latin word for peacock.

Constellation Pavo
Constellation Pavo

This group of stars is part of a collection called the "Southern Birds." This group also includes the constellations Grus, Phoenix, and Tucana.

Johann Bayer - Uraniometria - Southern Birds
Johann Bayer - Uraniometria - Southern Birds

Pavo covers a large area of 378 square degrees. This means it takes up about 0.916% of the entire night sky. Because it is so far south, people in the northern part of the world cannot see it.

Johan Doppelmayr's celestial chart of Pavo and Indus
Johan Doppelmayr's celestial chart of Pavo and Indus

Many different kinds of stars live within this constellation. The brightest star is Alpha Pavonis, which is also called Peacock. It is a spectroscopic binary, which means it is actually two stars orbiting each other. These two stars spin around one another in just 11 days and 18 hours.

Constellation Pavo
Constellation Pavo

Another star is Delta Pavonis, which is a yellow star very much like our own Sun. It is quite close to us at only 19.9 light-years away. Some stars in Pavo even change their brightness over time. For example, Lambda Pavonis is an irregular variable star that you can see without a telescope.

Space in Pavo is also filled with much larger objects. You can find a globular cluster there named NGC 6752. A globular cluster is a huge, round group of stars. This one is the fourth brightest in the whole sky.

Star cluster NGC 6752
Star cluster NGC 6752

There is also a massive spiral galaxy called NGC 6744. This galaxy looks very much like our own Milky Way. However, it is actually twice as large as our galaxy. Even the sky around these stars can be busy. Every year, a meteor shower called the Delta Pavonids appears near the star Delta Pavonis.

Humans have been mapping these stars for a long time. The constellation first appeared on a celestial globe in 1598. This globe was made in Amsterdam by Petrus Plancius and Jodocus Hondius. It was likely based on observations from explorers Pieter Dirkszoon Keyser and Frederick de Houtman.

Johann Bayer - Uraniometria - Southern Birds
Johann Bayer - Uraniometria - Southern Birds

Later, in 1603, Johann Bayer included Pavo in his famous star atlas. In 1756, the astronomer Nicolas-Louis de Lacaille gave the stars their Greek letter names. These names help scientists talk about specific stars in the group. Today, the International Astronomical Union uses the abbreviation "Pav" for the constellation.

Finding things in Pavo helps us understand our own solar system. Scientists have found six star systems in this area that have planets. In the HD 181433 system, there is a planet called a super-Earth. This is a planet that is larger than Earth. In the HD 172555 system, evidence shows two planets had a huge collision a few thousand years ago.

Star cluster NGC 6752
Star cluster NGC 6752

We also found a star called HD 186302 that is a "solar sibling." This means it has a very similar mass and type to our Sun. Studying these distant worlds helps us learn how planets are made and how they change.

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🖼️ Images & Media (4)
File:Johann Bayer - Uraniometria - Southern Birds.jpg
Johann Bayer - Uraniometria - Southern Birds.jpg
File:Johan Doppelmayr's celestial chart of Pavo and Indus.jpg
Johan Doppelmayr's celestial chart of...
File:Constellation Pavo.jpg
Constellation Pavo.jpg
File:Star cluster NGC 6752.jpg
Star cluster NGC 6752.jpg
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