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Eta Carinae
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Star Eta Carinae

Binary star Eta Carinae is located 7500 light years away from the Sun. It consists of a blue supergiant and a blue star. For now, there are no known exoplanets in this star system.
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Sun distance
7500 light years
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Eta Carinae A

Blue supergiant

Location +

Ascension iconRight ascension: 10h 45m 3.591s
Declination iconDeclination: -59° 41' 4.260'' (southern hemisphere)
Parallax iconParallax: 0.435
Distance iconSun distance: 7,500.000 ly | 2,299.5 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: 9000 % M Sun
| 0 M Jupiter
(estimate)
Array
radius icon
Size: 24000 % R Sun
| 2388.3 R Jupiter
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Star size
Radius of the star Eta Carinae A is 240 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
luminosity icon
Luminosity: 4600000 L Sun
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Star luminosity
Luminosity is the total amount of energy a star gives off every second. Think of it as the star’s true brightness — not just how bright it looks from Earth. This is important because some stars may appear dim simply because they are far away, not because they’re actually faint... icon More about Star luminosity in StellarGuide

Eta Carinae B

Blue star

Location +

Distance iconDistance from the primary: 15.4 AU

Basic characteristic

icon weight
Mass: 3000 % M Sun
| 94281.3 M Jupiter
(estimate)
Array
radius icon
Size: 20 R Sun
(estimate)
temperature icon
Temperature: 37200 K | 6.44 T Sun
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Star temperature
Surface temperature of Eta Carinae B is 37200 K, which is 644 % 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
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Eta Carinae system structure

 Eta Carinae A
Eta Carinae B 15.4 AU

More about Eta Carinae

       Eta Carinae can be found in southern celestial hemisphere.
Other designations of this star
Foramen, Tseen She, 231 G Carinae, HR 4210, HD 93308, CD−59°2620, IRAS 10431-5925, GC 14799, AAVSO 1041–59, Eta Argus
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External sources
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Frequently Asked Questions

How far is the Eta Carinae system from the Sun?

The Eta Carinae system is 7500 light years or 2,299.5 parsecs from the Sun.

What galaxy is the Eta Carinae star in?

The Eta Carinae is in the Milky Way galaxy just like the Sun.

How many stars are in the Eta Carinae system?

The Eta Carinae system contains 2 stars.

What type of star is the Eta Carinae?

The primary in the Eta Carinae system is a Blue supergiant star.

What temperature is the Eta Carinae?

The primary in the Eta Carinae system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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