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Wolf 918
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Star Wolf 918

Red dwarf Wolf 918 is located 39 light years away from the Sun. It is a single star of spectral class M1V C, that has 44 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
39 light years
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Wolf 918

Red dwarf, High proper motion star
Spectral class: M1V C

Location +

Ascension iconRight ascension: 21h 9m 18.214s
Declination iconDeclination: -13° 18' 40.940'' (equatorial region)
Parallax iconParallax: 84.440
Distance iconSun distance: 38.626 ly | 11.8 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: 44 % M Sun
| 461 M Jupiter
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Star mass
Mass of the star Wolf 918 is 0.44 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: 50 % R Sun
| 4.6 R Jupiter
(estimate)
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Star size
Radius of the star Wolf 918 is not known. Its estimated value based on other similar stars is about 50 % 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: 3560 K | 0.62 T Sun
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Star temperature
Surface temperature of Wolf 918 is 3560 K, which is 62 % 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: 0.027 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): 10.9
Magnitude iconAbsolute magnitude (V): 10.5
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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Wolf 918 system structure

 Wolf 918

More about Wolf 918

Nearby star Wolf 918 is a main sequence star that fuses hydrogen atoms into helium. It is approximately 50 % of the size of Sun and temperature on its surface is around 3560 K (3287 °C), which is about 62 % of Sun's temperature.
       Wolf 918 can be found in southern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
LHS 65, GJ 821, Gliese 821, HIC 104432, HIP 104432, LFT 1607, LTT 8393, 2MASS J21091740-1318080, NLTT 50633, TIC 214576902, TYC 5783-1513-1, Gaia DR2 6885776098199761024, WISEA J210917.93-131830.3, Gaia EDR3 6885776098199761024
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External sources
simbad icon
Simbad database (Wolf 918)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 6885776098199761024)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Wolf 918 system from the Sun?

The Wolf 918 system is 39 light years or 11.8 parsecs from the Sun.

What galaxy is the Wolf 918 star in?

The Wolf 918 is in the Milky Way galaxy just like the Sun.

How many stars are in the Wolf 918 system?

The Wolf 918 is a single star, there are no other known stars in the system.

What type of star is the Wolf 918?

The star Wolf 918 is a Red dwarf star.

What temperature is star Wolf 918?

The star Wolf 918 has an effective temperature of 3560 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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