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Beta Eridani
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Star Beta Eridani

Subgiant Beta Eridani is located 90 light years away from the Sun. It is a single star of spectral class A3IV, that has 200 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
90 light years
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Beta Eridani

Subgiant, High proper motion star
Spectral class: A3IV

Location +

Ascension iconRight ascension: 5h 7m 50.888s
Declination iconDeclination: -5° 5' 12.517'' (equatorial region)
Parallax iconParallax: 36.246
Distance iconSun distance: 89.985 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: 200 % M Sun
| 2095 M Jupiter
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Star mass
Mass of the star Beta Eridani is 2 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: 240 % R Sun
| 23.9 R Jupiter
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Star size
Radius of the star Beta Eridani is 2.4 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: 8360 K | 1.45 T Sun
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Star temperature
Surface temperature of Beta Eridani is 8360 K, which is 145 % 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: 25 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): 2.8
Magnitude iconAbsolute magnitude (V): 0.6
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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Beta Eridani system structure

 Beta Eridani

More about Beta Eridani

Nearby star Beta Eridani is is approximately 2 times bigger than the Sun and temperature on its surface is around 8360 K (8087 °C), which is about 145 % of Sun's temperature.
       Beta Eridani can be found in southern celestial hemisphere, and it is possible to see it with naked eye. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
bet Eri, Cursa/Kursa,[11] Dhalim,[12] β Eri, Beta Eri, 67 Eridani, 67 Eri, BD−05 1162, CCDM J05079-0506A, FK5 188, GC 6274, GJ 9175, Gliese 9175, HD 33111, HIP 23875, HR 1666, IDS 05030-0513 A, PPM 187729, SAO 131794, WDS 05078-0505A, Gaia DR3 3211922645854328832
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External sources
simbad icon
Simbad database (* bet Eri)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 3211922645854328832)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Beta Eridani system from the Sun?

The Beta Eridani system is 90 light years or 27.6 parsecs from the Sun.

What galaxy is the Beta Eridani star in?

The Beta Eridani is in the Milky Way galaxy just like the Sun.

How many stars are in the Beta Eridani system?

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

What type of star is the Beta Eridani?

The star Beta Eridani is a Subgiant star.

What temperature is star Beta Eridani?

The star Beta Eridani has an effective temperature of 8360 K. Find out more about the temperature of stars in Stellar guide
Class of stars Subgiant
A subgiant is a term used to describe a luminous star that is typically running out of hydrogen for nuclear fusion and is thus departing from the main sequence. These stars are classified as Yerkes luminosity class IV.
Possible companions

 UCAC3 170-18323
 - 0.3 ly
Closest stars

 G 84-40
 - 7.2 ly

68 Eridani
 - 7.4 ly

HD 33725
 - 7.5 ly

HD 30562
 1.3 M☉ 8.8 ly

Wolf 1451
 - 9.3 ly
3D map of stellar neighborhood
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