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Star TOI-1291

Subgiant TOI-1291 is located 1396 light years away from the Sun. It is a single star of spectral class F8IV, that has 120 % of solar mass. There is at least one exoplanet in this system.
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Sun distance
1396 light years

TOI-1291

Spectral class: F8IV

Location +

Ascension iconRight ascension: 16h 23m 16.338s
Declination iconDeclination: 62° 55' 30.227'' (northern hemisphere)
Parallax iconParallax: 2.365
Distance iconSun distance: 1,396.349 ly | 428.1 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: 120 % M Sun
| 1257 M Jupiter
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Star mass
Mass of the star TOI-1291 is 1.2 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: 181 % R Sun
| 18 R Jupiter
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Star size
Radius of the star TOI-1291 is 1.81 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: 6230 K | 1.08 T Sun
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Star temperature
Surface temperature of TOI-1291 is 6230 K, which is 108 % 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 iconApparent magnitude (V): 11.5
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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TOI-1291 system structure

TOI-1291
TOI-1291 b 0.06 AU 4.8 R⊕ 7.2 days

More about TOI-1291

Star TOI-1291 is a main sequence star that fuses hydrogen atoms into helium. It is is approximately 81 % bigger than the Sun and temperature on its surface is around 6230 K (5957 °C), which is about 108 % of Sun's temperature.
       TOI-1291 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
TYC 4193-1866-1, 2MASS J16231632+6255302, TIC 198186769, Gaia DR3 1628902566468951296, Gaia DR2 1628902566468951296, GSC 04193-01866
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Frequently Asked Questions

How far is the TOI-1291 system from the Sun?

The TOI-1291 system is 1396 light years or 428.1 parsecs from the Sun.

What galaxy is the TOI-1291 star in?

The TOI-1291 is in the Milky Way galaxy just like the Sun.

How many stars are in the TOI-1291 system?

The TOI-1291 is a single star, there are no other known stars in the system.

What type of star is the TOI-1291?

The star TOI-1291 is a Subgiant star.

What temperature is star TOI-1291?

The star TOI-1291 has an effective temperature of 6230 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.

stellar brief logoStellar Brief

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13. 11. 2026
stellar brief logo
Epsilon Indi Ab’s atmosphere carries a chemical clue to solids formed in deep cold, while WASP-4 c takes about 29 years to circle its star and measurements show no significant orbital decay for WASP-4 b. The latest reports also explore a low-density planet on the Neptune ridge, updated JWST views of HIP 65426 b, and how planetary systems change over time.
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