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TWA 28
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Star TWA 28

Red dwarf TWA 28 is located 193 light years away from the Sun. It is a single star of spectral class M9, 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
193 light years
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TWA 28

Red dwarf
Spectral class: M9

Location +

Ascension iconRight ascension: 11h 2m 9.749s
Declination iconDeclination: -34° 30' 35.795'' (southern hemisphere)
Parallax iconParallax: 16.879
Distance iconSun distance: 193.228 ly | 59.2 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: 7 % M Sun
| 73.3 M Jupiter
 (estimate)
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Star mass
The estimated mass of the star TWA 28 is about 7 % of the Sun's mass, or approximately 73.3 Jupiter 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: 26 % R Sun
| 2.6 R Jupiter
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Star size
Radius of the star TWA 28 is 0.261 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: 2577 K | 0.45 T Sun
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Star temperature
Surface temperature of TWA 28 is 2577 K, which is 45 % 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

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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TWA 28 system structure

 TWA 28

More about TWA 28

Star TWA 28 is approximately 30 % of the size of Sun and temperature on its surface is around 2577 K (2304 °C), which is about 45 % of Sun's temperature.
       TWA 28 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 5401822669314874240
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External sources
gaia icon
Gaia database (Gaia DR3 5401822669314874240)
Archive from the Gaia mission

Frequently Asked Questions

How far is the TWA 28 system from the Sun?

The TWA 28 system is 193 light years or 59.2 parsecs from the Sun.

What galaxy is the TWA 28 star in?

The TWA 28 is in the Milky Way galaxy just like the Sun.

How many stars are in the TWA 28 system?

The TWA 28 is a single star, there are no other known stars in the system.

What type of star is the TWA 28?

The star TWA 28 is a Red dwarf star.

What temperature is star TWA 28?

The star TWA 28 has an effective temperature of 2577 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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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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