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Gliese 9689
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Star Gliese 9689

Red dwarf Gliese 9689 is located 100 light years away from the Sun. It is a single star of spectral class M0.5V, that has typically about 25 % of solar mass. There is at least one exoplanet in this system.
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Sun distance
100 light years
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Gliese 9689

Red dwarf
Spectral class: M0.5V

Location +

Ascension iconRight ascension: 20h 13m 51.816s
Declination iconDeclination: 13° 23' 19.714'' (equatorial region)
Parallax iconParallax: 32.629
Distance iconSun distance: 99.958 ly | 30.6 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: 60 % M Sun
| 576.2 M Jupiter
 (estimate)
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Star mass
The mass of the star Gliese 9689 is unknown. Based on its other characteristics, it is estimated to be about 60 % 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: 60 % R Sun
| 5.6 R Jupiter
(estimate)
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Star size
Radius of the star Gliese 9689 is not known. Its estimated value based on other similar stars is about 60 % 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: 3836 K | 0.66 T Sun
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Star temperature
Surface temperature of Gliese 9689 is 3836 K, which is 66 % 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
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Gliese 9689 system structure

 Gliese 9689
Gliese 9689 b 0.1 AU 9.7 M⊕ -

More about Gliese 9689

Nearby star Gliese 9689 is a main sequence star that fuses hydrogen atoms into helium. It is approximately 60 % of the size of Sun and temperature on its surface is around 3836 K (3563 °C), which is about 66 % of Sun's temperature.
       Gliese 9689 can be found in northern celestial hemisphere.
Other designations of this star
GJ 9689, Ross 754, G 143-38, Gliese 784.1, GJ 784.1, HIC 99699, HIP 99699, LTT 15920, NLTT 48906, 2MASS J20135177+1323197, TIC 87942223, TYC 1085-448-1, WISEA J201352.11+132319.9
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Frequently Asked Questions

How far is the Gliese 9689 system from the Sun?

The Gliese 9689 system is 100 light years or 30.6 parsecs from the Sun.

What galaxy is the Gliese 9689 star in?

The Gliese 9689 is in the Milky Way galaxy just like the Sun.

How many stars are in the Gliese 9689 system?

The Gliese 9689 is a single star, there are no other known stars in the system.

What type of star is the Gliese 9689?

The star Gliese 9689 is a Red dwarf star.

What temperature is star Gliese 9689?

The star Gliese 9689 has an effective temperature of 3836 K. Find out more about the temperature of stars in Stellar guide
Class of stars Red dwarf
Red dwarfs are small, cool stars with surface temperatures of about 2,000–3,800 K, much cooler than the Sun. They usually have 8–50% of the Sun’s mass and shine very faintly, sometimes at just a tiny fraction of the Sun’s brightness. Classified mainly as spectral type M, they are the most common stars in the Milky Way, making up roughly 70–75% of its stellar population.

They fuse hydrogen slowly through the proton–proton chain and are fully convective, which allows them to use their fuel very efficiently. As a result, red dwarfs can live for tens of billions to trillions of years—far longer than the Sun. Many exoplanets orbit red dwarfs, including some in close habitable zones, though strong stellar activity can affect planetary environments.
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