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Epsilon2 Arae
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Star Epsilon2 Arae

Binary star Epsilon2 Arae is located 87 light years away from the Sun. It consists of a yellow-white star and a orange star. For now, there are no known exoplanets in this star system.
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Sun distance
87 light years
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Epsilon2 Arae A

Yellow-White star
Spectral class: F5VFe+0.5

Location +

Ascension iconRight ascension: 17h 3m 8.715s
Declination iconDeclination: -53° 14' 15.270'' (southern hemisphere)
Parallax iconParallax: 37.370
Distance iconSun distance: 87.278 ly | 26.8 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: 130 % M Sun
| 1351.4 M Jupiter
 (estimate)
+
Star mass
The mass of the star Epsilon2 Arae A is unknown. Based on its other characteristics, it is estimated to be about 130 % 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: 150 % R Sun
| 14.8 R Jupiter
(estimate)
+
Star size
Radius of the star Epsilon2 Arae A is not known. Its estimated value based on other similar stars is about 150 % 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: 6577 K | 1.14 T Sun
+
Star temperature
Surface temperature of Epsilon2 Arae A is 6577 K, which is 114 % 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 iconApparent magnitude (V): 5.3
Magnitude iconAbsolute magnitude (V): 3.1
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

Epsilon2 Arae B

Orange star

Basic characteristic

icon weight
Mass: 80 % M Sun
| 859 M Jupiter
 (estimate)
+
Star mass
The mass of the star Epsilon2 Arae B is unknown. Based on its other characteristics, it is estimated to be about 80 % 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: 80 % R Sun
| 7.9 R Jupiter
(estimate)
+
Star size
Radius of the star Epsilon2 Arae B is not known. Its estimated value based on other similar stars is about 80 % 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 iconTemperature: 5000 K
 (estimate)
+
Star temperature
Surface temperature of Epsilon2 Arae B is estimated to be 4992 K, which is 87 % 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 iconApparent magnitude (V): 8.7
Magnitude iconAbsolute magnitude (V): 6.5
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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Epsilon2 Arae system structure

 Epsilon2 Arae A
Epsilon2 Arae B

More about Epsilon2 Arae

       Epsilon2 Arae can be found in southern celestial hemisphere, and it is possible to see it with naked eye.
Other designations of this star
* eps02 Ara, CPD−53° 8316, GJ 3985, HD 153580, HIP 83431, HR 6314, SAO 244388, Gaia DR3 5923907314622859520
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Frequently Asked Questions

How far is the Epsilon2 Arae system from the Sun?

The Epsilon2 Arae system is 87 light years or 26.8 parsecs from the Sun.

What galaxy is the Epsilon2 Arae star in?

The Epsilon2 Arae is in the Milky Way galaxy just like the Sun.

How many stars are in the Epsilon2 Arae system?

The Epsilon2 Arae system contains 2 stars.

What type of star is the Epsilon2 Arae?

The primary in the Epsilon2 Arae system is a Yellow-White star star.

What temperature is star Epsilon2 Arae?

The primary in the Epsilon2 Arae system has a temperature of 6577 K. Find out more about the temperature of stars in Stellar guide
Possible companions

 WG 32
 - 0.2 ly
Closest stars

 DENIS J170547.4-544151
 - 2.9 ly

UPM J1704-5125
 - 3.3 ly

Gaia EDR3 5936004175900734336
 - 4.7 ly

L 268-56
 - 4.9 ly

PM J16513-5406
 - 5.8 ly
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exoplanet iconAbout Stellar Catalog

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icon Data in Stellar Catalog come from trusted scientific sources. Primary source is Gaia space telescope mapping the stars in Milky Way. Other sources include research papers, Simbad catalog and Exoplanet.eu database.
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