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WASP-197
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Star WASP-197

Subgiant WASP-197 is located 1559 light years away from the Sun. It is a single star of spectral class G0IV, that has 136 % of solar mass. There is at least one exoplanet in this system.
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Sun distance
1559 light years
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WASP-197

Subgiant
Spectral class: G0IV

Location +

Ascension iconRight ascension: 10h 42m 31.376s
Declination iconDeclination: 28° 11' 55.053'' (northern hemisphere)
Parallax iconParallax: 2.093
Distance iconSun distance: 1,558.521 ly | 477.8 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: 136 % M Sun
| 1425 M Jupiter
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Star mass
Mass of the star WASP-197 is 1.36 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: 211 % R Sun
| 21 R Jupiter
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Star size
Radius of the star WASP-197 is 2.112 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: 6050 K | 1.05 T Sun
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Star temperature
Surface temperature of WASP-197 is 6050 K, which is 105 % 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: 2.6 billions years | 0.57 Sun
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Star age
Star WASP-197 is 2.6 billion years old, which is about 0.57 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 iconApparent magnitude (V): 11.6
Magnitude iconAbsolute magnitude (V): 3.2
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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WASP-197 system structure

 WASP-197
WASP-197 b 0.07 AU 403.4 M⊕ 14.4 R⊕ 5.2 days

More about WASP-197

Star WASP-197 is a main sequence star that fuses hydrogen atoms into helium. It is is approximately 2 times bigger than the Sun and temperature on its surface is around 6050 K (5777 °C), which is about 105 % of Sun's temperature.
       WASP-197 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
TIC 85266608, TOI-5385, Gaia DR3 734156218947945216
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External sources
icon study
gaia icon
Gaia database (Gaia DR3 734156218947945216)
Archive from the Gaia mission

Frequently Asked Questions

How far is the WASP-197 system from the Sun?

The WASP-197 system is 1559 light years or 477.8 parsecs from the Sun.

What galaxy is the WASP-197 star in?

The WASP-197 is in the Milky Way galaxy just like the Sun.

How many stars are in the WASP-197 system?

The WASP-197 is a single star, there are no other known stars in the system.

What type of star is the WASP-197?

The star WASP-197 is a Subgiant star.

What temperature is star WASP-197?

The star WASP-197 has an effective temperature of 6050 K. Find out more about the temperature of stars in Stellar guide
Class of stars Subgiant
A subgiant is a term used to describe a luminous star that is typically running out of hydrogen for nuclear fusion and is thus departing from the main sequence. These stars are classified as Yerkes luminosity class IV.
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