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K2-261
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Star K2-261

Subgiant K2-261 is located 701 light years away from the Sun. It is a single star of spectral class G7 IV/V, that has 110 % of solar mass. There is at least one exoplanet in this system.
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Sun distance
701 light years
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K2-261

Subgiant
Spectral class: G7 IV/V

Location +

Ascension iconRight ascension: 10h 52m 7.755s
Declination iconDeclination: 0° 29' 35.379'' (equatorial region)
Parallax iconParallax: 4.652
Distance iconSun distance: 701.064 ly | 214.9 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: 110 % M Sun
| 1152 M Jupiter
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Star mass
Mass of the star K2-261 is 1.1 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: 165 % R Sun
| 16.4 R Jupiter
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Star size
Radius of the star K2-261 is 1.65 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: 5537 K | 0.96 T Sun
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Star temperature
Surface temperature of K2-261 is 5537 K, which is 96 % 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: 8.8 billions years | 1.91 Sun
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Star age
Star K2-261 is 8.8 billion years old, which is about 1.91 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): 10.6
Magnitude iconAbsolute magnitude (V): 3.9
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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K2-261 system structure

 K2-261
K2-261 b 0.1 AU 70.9 M⊕ 9.5 R⊕ 11.6 days

More about K2-261

Star K2-261 is is approximately 65 % bigger than the Sun and temperature on its surface is around 5537 K (5264 °C), which is about 96 % of Sun's temperature.
       K2-261 can be found in northern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
EPIC 201498078, 2MASS J10520778+0029359, Gaia DR3 3807826337147474176
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External sources
gaia icon
Gaia database (Gaia DR3 3807826337147474176)
Archive from the Gaia mission

Frequently Asked Questions

How far is the K2-261 system from the Sun?

The K2-261 system is 701 light years or 214.9 parsecs from the Sun.

What galaxy is the K2-261 star in?

The K2-261 is in the Milky Way galaxy just like the Sun.

How many stars are in the K2-261 system?

The K2-261 is a single star, there are no other known stars in the system.

What type of star is the K2-261?

The star K2-261 is a Subgiant star.

What temperature is star K2-261?

The star K2-261 has an effective temperature of 5537 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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