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HR 6819
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Star HR 6819

Binary star HR 6819 is located 1119 light years away from the Sun. It consists of 2 blue giant stars. For now, there are no known exoplanets in this star system.
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Sun distance
1119 light years
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HR 6819 A

Blue Giant
Spectral class: Be

Location +

Ascension iconRight ascension: 18h 17m 7.532s
Declination iconDeclination: -56° 1' 24.088'' (southern hemisphere)
Parallax iconParallax: 2.915
Distance iconSun distance: 1,118.965 ly | 343.1 pc
Star position
The position of a star tells us where it appears in the sky, similar to how we use coordinates like latitude and longitude on Earth. In astronomy, the three main coordinates are right ascension, declination and distance. .. icon More about Star position in StellarGuide

Basic characteristic

icon weight
Mass: 630 % M Sun
| 6600 M Jupiter
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Star mass
Mass of the star HR 6819 A is 6.3 solar masses.

The mass of a star is the total amount of matter it contains. It is one of the most important properties of a star, as it determines almost everything about how the star lives, changes, and dies. In astronomy, star mass is usually measured in solar masses (M☉) — where 1 solar mass is equal to the mass of our Sun... icon More about Star mass in StellarGuide
radius icon
Size: 550 % R Sun
| 54.7 R Jupiter
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Star size
Radius of the star HR 6819 A is 5.5 solar radii.

The size of a star refers to its radius — the distance from its center to its surface. Star size is usually measured in solar radii (R☉), where 1 solar radius equals approximately 696,000 kilometers. Depending on their type and life stage, stars can be much smaller or larger than the Sun... icon More about Star size in StellarGuide
temperature icon
Temperature: 20000 K | 3.46 T Sun
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Star temperature
Surface temperature of HR 6819 A is 20000 K, which is 346 % of the temperature on the surface of the Sun.

The temperature of a star refers to the temperature at its surface, also called the photosphere. It is measured in kelvins (K), the standard unit for temperature in astronomy. A star’s temperature tells us a lot about its physical properties and where it stands in its evolutionary stage... icon More about Star temperature in StellarGuide

HR 6819 B

Blue Giant
Spectral class: B

Basic characteristic

temperature icon
Temperature: 16000 K | 2.77 T Sun
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Star temperature
Surface temperature of HR 6819 B is 16000 K, which is 277 % of the temperature on the surface of the Sun.

The temperature of a star refers to the temperature at its surface, also called the photosphere. It is measured in kelvins (K), the standard unit for temperature in astronomy. A star’s temperature tells us a lot about its physical properties and where it stands in its evolutionary stage... icon More about Star temperature in StellarGuide
time icon
Age: 0.05 billions years | 0.01 Sun
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Star age
Star HR 6819 B is 0.05 billion years old, which is about 0.01 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age in StellarGuide
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HR 6819 system structure

Stars A and B form a pair, which is orbited by the more distant star C.
 HR 6819 A
HR 6819 B

More about HR 6819

       HR 6819 can be found in southern celestial hemisphere.
Other designations of this star
QV Tel, CD−56°7256, FK5 1474, GC 24906, HD 167128, HIC 89605, HIP 89605, HR 6819, SAO 245369, ALS 15 056
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Frequently Asked Questions

How far is the HR 6819 system from the Sun?

The HR 6819 system is 1119 light years or 343.1 parsecs from the Sun.

What galaxy is the HR 6819 star in?

The HR 6819 is in the Milky Way galaxy just like the Sun.

How many stars are in the HR 6819 system?

The HR 6819 system contains 2 stars.

What type of star is the HR 6819?

The primary in the HR 6819 system is a Blue Giant star.

What temperature is star HR 6819?

The primary in the HR 6819 system has a temperature of 20000 K. Find out more about the temperature of stars in Stellar guide
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