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Acrux
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Star Acrux

Binary star Acrux is located 322 light years away from the Sun. It consists of a subgiant and a blue-white star. For now, there are no known exoplanets in this star system.
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Sun distance
322 light years
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Acrux

Subgiant
Spectral class: B0.5IV

Location +

Ascension iconRight ascension: 12h 26m 35.895s
Declination iconDeclination: -63° 5' 56.734'' (southern hemisphere)
Parallax iconParallax: 10.130
Distance iconSun distance: 321.970 ly | 98.7 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: 1780 % M Sun
| 18647 M Jupiter
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Star mass
Mass of the star Acrux is 17.80 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: 780 % R Sun
| 77.6 R Jupiter
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Star size
Radius of the star Acrux is 7.8 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: 24000 K | 4.15 T Sun
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Star temperature
Surface temperature of Acrux is 24000 K, which is 415 % 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
luminosity icon
Luminosity: 25000 L Sun
+
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 iconAbsolute magnitude (V): -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

HD 108249

Blue-white star
Spectral class: B1V

Basic characteristic

icon weight
Mass: 1552 % M Sun
| 16258 M Jupiter
+
Star mass
Mass of the star HD 108249 is 17.80 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: 540 % R Sun
| 53.7 R Jupiter
+
Star size
Radius of the star HD 108249 is 5.4 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: 28000 K | 4.85 T Sun
+
Star temperature
Surface temperature of HD 108249 is 28000 K, which is 485 % 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
luminosity icon
Luminosity: 16000 L Sun
+
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 iconAbsolute magnitude (V): -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
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Acrux system structure

 Acrux
HD 108249

More about Acrux

       Acrux can be found in southern celestial hemisphere.
Other designations of this star
α2 Cru, 27 G. Crucis, GC 16953, HD 108249, HR 4731, 2MASS J12263615-6305571, α Crucis, CPD−62°2745, HIP 60718, CCDM J12266-6306, WDS J12266-6306, α1 Cru, 26 G. Crucis, FK5 462, GC 16952, HD 108248, HR 4730
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Frequently Asked Questions

How far is the Acrux system from the Sun?

The Acrux system is 322 light years or 98.7 parsecs from the Sun.

What galaxy is the Acrux star in?

The Acrux is in the Milky Way galaxy just like the Sun.

How many stars are in the Acrux system?

The Acrux system contains 2 stars.

What type of star is the Acrux?

The primary in the Acrux system is a Subgiant star.

What temperature is star Acrux?

The primary in the Acrux system has a temperature of 24000 K. Find out more about the temperature of stars in Stellar guide
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