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Eta Crucis
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Star Eta Crucis

Yellow-White star Eta Crucis is located 64 light years away from the Sun. It is suspected double or multiple star of spectral class F2V, that has typically about 130 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
64 light years
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Eta Crucis

Yellow-White star, Spectroscopic binary
Spectral class: F2V

Location +

Ascension iconRight ascension: 12h 6m 52.992s
Declination iconDeclination: -64° 36' 50.021'' (southern hemisphere)
Parallax iconParallax: 50.792
Distance iconSun distance: 64.214 ly | 19.7 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: 150 % M Sun
| 1519 M Jupiter
 (estimate)
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Star mass
The mass of the star Eta Crucis is unknown. Based on its other characteristics, it is estimated to be about 150 % of the Sun's mass.

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: 130 % R Sun
| 12.9 R Jupiter
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Star size
Radius of the star Eta Crucis is 1.3 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: 6964 K | 1.21 T Sun
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Star temperature
Surface temperature of Eta Crucis is 6964 K, which is 121 % 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: 2.53 billions years | 0.55 Sun
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Star age
Star Eta Crucis is 2.53 billion years old, which is about 0.55 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: 7 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): 4.1
Magnitude iconAbsolute magnitude (V): 2.7
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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Eta Crucis system structure

 Eta Crucis

More about Eta Crucis

Nearby star Eta Crucis is a main sequence star that fuses hydrogen atoms into helium. It is is approximately 30 % bigger than the Sun and temperature on its surface is around 6964 K (6691 °C), which is about 121 % of Sun's temperature.
       Eta Crucis can be found in southern celestial hemisphere, and it is possible to see it with naked eye.
Other designations of this star
η Cru, CD−63° 2145, GJ 9388, Gliese 9388, HD 105211, HIP 59072, HR 4616, SAO 251742, eta Cru, Gaia DR3 6053245135154609280
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External sources
simbad icon
Simbad database (* eta Cru)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 6053245135154609280)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Eta Crucis system from the Sun?

The Eta Crucis system is 64 light years or 19.7 parsecs from the Sun.

What galaxy is the Eta Crucis star in?

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

How many stars are in the Eta Crucis system?

The Eta Crucis is a single star, there are no other known stars in the system.

What type of star is the Eta Crucis?

The star Eta Crucis is a Yellow-White star star.

What temperature is star Eta Crucis?

The star Eta Crucis has an effective temperature of 6964 K. Find out more about the temperature of stars in Stellar guide
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