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B Carinae
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Star B Carinae

Binary star B Carinae is located 90 light years away from the Sun. It consists of a yellow-white star and a white dwarf. For now, there are no known exoplanets in this star system.
Sun distance
90 light years
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B Carinae A

Yellow-White star, Spectroscopic binary
Spectral class: F6VFe-0.8CH-0.4

Location +

Ascension iconRight ascension: 8h 9m 0.313s
Declination iconDeclination: -61° 18' 13.365'' (southern hemisphere)
Parallax iconParallax: 36.247
Distance iconSun distance: 89.981 ly | 27.6 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: 135 % M Sun
| 1414 M Jupiter
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Star mass
Mass of the star B Carinae A is 1.35 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: 150 % R Sun
| 14.9 R Jupiter
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Star size
Radius of the star B Carinae A is 1.50 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: 6491 K | 1.12 T Sun
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Star temperature
Surface temperature of B Carinae A is 6491 K, which is 112 % 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: 10 billions years | 2.17 Sun
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Star age
Star B Carinae A is 10 billion years old, which is about 2.17 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
luminosity icon
Luminosity: 3.6 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

Photometry

Magnitude iconApparent magnitude (V): 4.7
Magnitude iconAbsolute magnitude (V): 2.5
Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).
5
10
15
20
25
30
35
K
2.1
H
1.6
J
1.2
Grp
0.8
I
0.8
G
0.6
V
0.5
Gbp
0.5
B
0.4
U
0.3

B Carinae B

White dwarf, , Spectroscopic binary

Basic characteristic

icon weight
Mass: 42 % M Sun
| 440 M Jupiter
+
Star mass
Mass of the star B Carinae B is 1.35 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
temperature iconTemperature: 6300 K
 (estimate)
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Star temperature
Surface temperature of B Carinae B is estimated to be 6335 K, which is 109 % 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

Photometry

Magnitude iconAbsolute magnitude (V): -1.3
Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).
5
10
15
20
25
30
35
K
2.1
H
1.6
J
1.2
Grp
0.8
I
0.8
G
0.6
V
0.5
Gbp
0.5
B
0.4
U
0.3
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B Carinae system structure

 B Carinae A
B Carinae B

More about B Carinae

       B Carinae can be found in southern celestial hemisphere, and it is possible to see it with naked eye.
Other designations of this star
B Car, CPD−60°1074, FK5 2636, GJ 297.1, Gliese 297.1, HD 68456, HIP 39903, HR 3220, SAO 250131, Gaia DR3 5289757523635492096
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News from this star system

Frequently Asked Questions stardetail

How far is the B Carinae system from the Sun?

The B Carinae system is 90 light years or 27.6 parsecs from the Sun.

What galaxy is the B Carinae star in?

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

How many stars are in the B Carinae system?

The B Carinae system contains 2 stars.

What type of star is the B Carinae?

The primary in the B Carinae system is a Yellow-White star star.

What temperature is star B Carinae?

The primary in the B Carinae system has a temperature of 6491 K. Find out more about the temperature of stars in Stellar guide
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