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TWA 30
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Star TWA 30

Binary star TWA 30 is located 155 light years away from the Sun. It consists of 2 t tauri star stars. For now, there are no known exoplanets in this star system.
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Sun distance
155 light years
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TWA 30 A

T Tauri star
Spectral class: M5

Location +

Ascension iconRight ascension: 11h 32m 18.204s
Declination iconDeclination: -30° 19' 52.261'' (southern hemisphere)
Parallax iconParallax: 21.089
Distance iconSun distance: 154.658 ly | 47.4 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: 12 % M Sun
| 126 M Jupiter
+
Star mass
Mass of the star TWA 30 A is 0.12 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: 20 % R Sun
| 1.5 R Jupiter
(estimate)
+
Star size
Radius of the star TWA 30 A is not known. Its estimated value based on other similar stars is about 20 % 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 iconTemperature: 3200 K
 (estimate)
+
Star temperature
Surface temperature of TWA 30 A is estimated to be 3173 K, which is 55 % 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
time icon
Age: 0.007 billions years | 0 Sun
+
Star age
Star TWA 30 A is 0.007 billion years old, which is about 0 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age in StellarGuide

Photometry

Magnitude iconAbsolute magnitude (V): -3.4
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

TWA 30 B

T Tauri star
Spectral class: M4

Location +

Distance iconDistance from the primary: 3400 AU

Basic characteristic

icon weight
Mass: 20 % M Sun
| 251.4 M Jupiter
 (estimate)
+
Star mass
The mass of the star TWA 30 B is unknown. Based on its other characteristics, it is estimated to be about 20 % 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: 40 % R Sun
| 3.9 R Jupiter
(estimate)
+
Star size
Radius of the star TWA 30 B is not known. Its estimated value based on other similar stars is about 40 % 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 iconTemperature: 3200 K
 (estimate)
+
Star temperature
Surface temperature of TWA 30 B is estimated to be 3215 K, which is 55 % 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 iconAbsolute magnitude (V): -3.4
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 30 system structure

 TWA 30 A
TWA 30 B 3400 AU

More about TWA 30

       TWA 30 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 3481965141177021568
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External sources
icon study

Frequently Asked Questions

How far is the TWA 30 system from the Sun?

The TWA 30 system is 155 light years or 47.4 parsecs from the Sun.

What galaxy is the TWA 30 star in?

The TWA 30 is in the Milky Way galaxy just like the Sun.

How many stars are in the TWA 30 system?

The TWA 30 system contains 2 stars.

What type of star is the TWA 30?

The primary in the TWA 30 system is a T Tauri star star.

What temperature is the TWA 30?

The primary in the TWA 30 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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