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Eta Indi
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Star Eta Indi

Subgiant Eta Indi is located 79 light years away from the Sun. It is a single star of spectral class A9IV, that has 160 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
79 light years
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Eta Indi

Subgiant, Delta Scuti variable
Spectral class: A9IV

Location +

Ascension iconRight ascension: 20h 44m 2.605s
Declination iconDeclination: -51° 55' 16.368'' (southern hemisphere)
Parallax iconParallax: 41.336
Distance iconSun distance: 78.904 ly | 24.2 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: 160 % M Sun
| 1676 M Jupiter
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Star mass
Mass of the star Eta Indi is 1.60 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: 227 % R Sun
| 22.6 R Jupiter
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Star size
Radius of the star Eta Indi is 2.27 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: 7694 K | 1.33 T Sun
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Star temperature
Surface temperature of Eta Indi is 7694 K, which is 133 % 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: 0.1 billions years | 0.02 Sun
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Star age
Star Eta Indi is 0.1 billion years old, which is about 0.02 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: 7.60 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): 4.5
Magnitude iconAbsolute magnitude (V): 2.6
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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Eta Indi system structure

 Eta Indi

More about Eta Indi

Nearby star Eta Indi is is approximately 2 times bigger than the Sun and temperature on its surface is around 7694 K (7421 °C), which is about 133 % of Sun's temperature.
      a pulsating star belonging to the Delta Scuti category. These stars expand and contract with a period in mere hours.  Eta Indi can be found in southern celestial hemisphere, and it is possible to see it with naked eye. 

      Eta Indi is a pulsating star belonging to the Delta Scuti category. These stars expand and contract with a period in mere hours.
Other designations of this star
η Ind, CPD−52° 11752, FK5 776, HD 197157, HIP 102333, HR 7920, SAO 246709, Gaia EDR3 6471630024096107008
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External sources
simbad icon
Simbad database (* eta Ind)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 6471630024096107008)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Eta Indi system from the Sun?

The Eta Indi system is 79 light years or 24.2 parsecs from the Sun.

What galaxy is the Eta Indi star in?

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

How many stars are in the Eta Indi system?

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

What type of star is the Eta Indi?

The star Eta Indi is a Subgiant star.

What temperature is star Eta Indi?

The star Eta Indi has an effective temperature of 7694 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.
Closest stars

 Smethells 65
 - 4 ly

L 280-19
 - 5.1 ly

SIPS J2053-5506
 - 5.3 ly

SCR J2040-5501
 - 6.1 ly

SSSPM J2052-4759
 - 6.2 ly
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