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TOI-237
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Star TOI-237

Red dwarf TOI-237 is located 125 light years away from the Sun. It is a single star, that has 17 % of solar mass. There are multiple known exoplanets in this system.
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Sun distance
125 light years
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TOI-237

Red dwarf

Location +

Ascension iconRight ascension: 23h 32m 58.464s
Declination iconDeclination: -29° 24' 59.520'' (southern hemisphere)
Parallax iconParallax: 26.118
Distance iconSun distance: 124.880 ly | 38.3 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: 17 % M Sun
| 178 M Jupiter
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Star mass
Mass of the star TOI-237 is 0.1698 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: 21 % R Sun
| 2 R Jupiter
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Star size
Radius of the star TOI-237 is 0.2056 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: 3226 K | 0.56 T Sun
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Star temperature
Surface temperature of TOI-237 is 3226 K, which is 56 % 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: 0.0041 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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TOI-237 system structure

 TOI-237
TOI-237 c 0.02 AU 1.2 R⊕ 1.7 days
TOI-237 b 0.03 AU 1.4 R⊕ 5.4 days

More about TOI-237

Star TOI-237 is approximately 20 % of the size of Sun and temperature on its surface is around 3226 K (2953 °C), which is about 56 % of Sun's temperature.
       TOI-237 can be found in southern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
Gaia DR3 2329387852426700800
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External sources
icon study
gaia icon
Gaia database (Gaia DR3 2329387852426700800)
Archive from the Gaia mission

Frequently Asked Questions

How far is the TOI-237 system from the Sun?

The TOI-237 system is 125 light years or 38.3 parsecs from the Sun.

What galaxy is the TOI-237 star in?

The TOI-237 is in the Milky Way galaxy just like the Sun.

How many stars are in the TOI-237 system?

The TOI-237 is a single star, there are no other known stars in the system.

What type of star is the TOI-237?

The star TOI-237 is a Red dwarf star.

What temperature is star TOI-237?

The star TOI-237 has an effective temperature of 3226 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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