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Gliese 390
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Star Gliese 390

Red dwarf Gliese 390 is located 42 light years away from the Sun. It is a single star of spectral class M1V, that has 53 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
42 light years
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Gliese 390

Red dwarf, High proper motion star
Spectral class: M1V

Location +

Ascension iconRight ascension: 10h 25m 10.087s
Declination iconDeclination: -10° 13' 41.347'' (equatorial region)
Parallax iconParallax: 78.175
Distance iconSun distance: 41.721 ly | 12.8 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: 53 % M Sun
| 555 M Jupiter
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Star mass
Mass of the star Gliese 390 is 0.53 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: 60 % R Sun
| 5.5 R Jupiter
(estimate)
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Star size
Radius of the star Gliese 390 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: 3780 K | 0.65 T Sun
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Star temperature
Surface temperature of Gliese 390 is 3780 K, which is 65 % 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): 10.1
Magnitude iconAbsolute magnitude (V): 9.6
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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Gliese 390 system structure

 Gliese 390

More about Gliese 390

Nearby star Gliese 390 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 3780 K (3507 °C), which is about 65 % of Sun's temperature.
       Gliese 390 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
BD-09 3070, LHS 2259, HIC 51007, 2MASS J10251088-1013434, StKM 2-636, HIP 51007, MCC 579 TIC 36879392, Cl* Melotte 25, EGG 37, JP11 277, NLTT 24293, TYC 5494-139-1, GALEX 6382139584145264285, Karmn J10251-102, PLX 2443, UCAC4 399-048321, GCRV 26267, LFT 713, PLX 2443.00, WISEA J102510.34-101341.8, GEN# -0.00903070, L 824-1, PM 10227-0959, [RHG95] 1630, G 162-52, LPM 347, PM J10251-1013, Gaia DR1 3767878704592802176, GJ 390, LTT 3825, PPM 716545, Gaia DR2 3767878708888402816, Gaia EDR3 3767878708888402816
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External sources
simbad icon
Simbad database (BD-09 3070)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 3767878708888402816)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Gliese 390 system from the Sun?

The Gliese 390 system is 42 light years or 12.8 parsecs from the Sun.

What galaxy is the Gliese 390 star in?

The Gliese 390 is in the Milky Way galaxy just like the Sun.

How many stars are in the Gliese 390 system?

The Gliese 390 is a single star, there are no other known stars in the system.

What type of star is the Gliese 390?

The star Gliese 390 is a Red dwarf star.

What temperature is star Gliese 390?

The star Gliese 390 has an effective temperature of 3780 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.
Closest stars

 MCC 573
 - 3 ly

WT 1827
 - 3.8 ly

LAWD 34
 - 6.3 ly

BD-11 2741
 - 6.4 ly

MCC 568
 - 7 ly
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