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Gliese 102
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Star Gliese 102

Red dwarf Gliese 102 is located 33 light years away from the Sun. It is a single flare star of spectral class M3.5 V, that has typically about 25 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
33 light years
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Gliese 102

Red dwarf, flare star
Spectral class: M3.5 V

Location +

Ascension iconRight ascension: 2h 33m 37.239s
Declination iconDeclination: 24° 55' 26.875'' (northern hemisphere)
Parallax iconParallax: 100.147
Distance iconSun distance: 32.568 ly | 10.0 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: 30 % M Sun
| 303.8 M Jupiter
 (estimate)
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Star mass
The mass of the star Gliese 102 is unknown. Based on its other characteristics, it is estimated to be about 30 % 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: 30 % R Sun
| 3.3 R Jupiter
(estimate)
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Star size
Radius of the star Gliese 102 is not known. Its estimated value based on other similar stars is about 30 % 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: 3283 K | 0.57 T Sun
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Star temperature
Surface temperature of Gliese 102 is 3283 K, which is 57 % 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: 0.00054 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

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 102 system structure

 Gliese 102

More about Gliese 102

Nearby star Gliese 102 is a main sequence star that fuses hydrogen atoms into helium. It is approximately 30 % of the size of Sun and temperature on its surface is around 3283 K (3010 °C), which is about 57 % of Sun's temperature.
       Gliese 102 can be found in northern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
L 1305-10, LP 354-46, CSI+24-02307, LSPM J0233+2455, LTT 10844, G 36-24, JP11 5108, LFT 215, LHS 1417, PLX 514, NLTT 8312, 2MASS J02333717+2455392, USNO 408, Gaia EDR3 102162639019033600
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External sources
simbad icon
Simbad database (G 36-24)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 102162639019033600)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Gliese 102 system from the Sun?

The Gliese 102 system is 33 light years or 10.0 parsecs from the Sun.

What galaxy is the Gliese 102 star in?

The Gliese 102 is in the Milky Way galaxy just like the Sun.

How many stars are in the Gliese 102 system?

The Gliese 102 is a single star, there are no other known stars in the system.

What type of star is the Gliese 102?

The star Gliese 102 is a Red dwarf star.

What temperature is star Gliese 102?

The star Gliese 102 has an effective temperature of 3283 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

 Gliese 3147
 - 6.5 ly

Delta Trianguli
 1 M☉ 6.6 ly

Gliese 3146
 0.05 M☉ 7.1 ly

Gliese 109
 0.3 M☉ 7.6 ly

Gliese 3128
 0 M☉ 9.2 ly
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icon Objects listed in the Stellar Catalog often have values that are estimates. These estimates are determined using their known characteristics, such as spectral type, brightness across different wavelengths, distance from a star, and other factors.
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