stars

exoplanets

news

Nearby stars catalogue

TOI 1209

Star TOI 1209

Subgiant TOI 1209 is located 566 light years away from the Sun. It is a single star of spectral class G0IV, that has 108 % of solar mass. There is at least one exoplanet in this system.

Loading 3D model

Nearby stars catalogue

Sun distance
566 light years

TOI 1209

Subgiant

Spectral class: G0IV

Location +

Right ascension: 4h 54m 10.066s

Declination: -70° 22' 44.767'' (southern hemisphere)

Parallax: 5.762

Sun distance: 566.080 ly | 173.6 pc

Basic characteristic

Mass: 108 % M Sun

Size: 134 % R Sun

Temperature: 6230 K | 1.08 T Sun

Photometry

Apparent magnitude (V): 10.2

Absolute magnitude (V): 4

Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).

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

TOI 1209 system structure


	TOI 1209
		TOI 1209 b	n/a		2.6 R⊕	40.7 days

More about TOI 1209

Star TOI 1209 is is approximately 34 % bigger than the Sun and temperature on its surface is around 6230 K (5957 °C), which is about 108 % of Sun's temperature.

       TOI 1209 can be found in southern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope.

Other designations of this star
HD 268805, Gaia DR3 4654747845890497920

External sources

The Orbital Eccentricity--Radius Distribution for Warm, Single Planets in TESS

Scientific study, Accepted: 23. 02. 2026

Gaia database (Gaia DR3 4654747845890497920)

Archive from the Gaia mission

News from this star system

TESS reveals how planet size shapes orbital eccentricity for warm single exoplanets

9. 3. 2026

Image: TESS reveals how planet size shapes orbital eccentricity for warm single exoplanets

TESS data shows that warm single exoplanets’ orbital shapes depend on their size: most small and medium planets have circular orbits, but larger gas giants are often found on highly eccentric paths....

Read article

Frequently Asked Questions

How far is the TOI 1209 system from the Sun?

The TOI 1209 system is 566 light years or 173.6 parsecs from the Sun.

What galaxy is the TOI 1209 star in?

The TOI 1209 is in the Milky Way galaxy just like the Sun.

How many stars are in the TOI 1209 system?

The TOI 1209 is a single star, there are no other known stars in the system.

What type of star is the TOI 1209?

The star TOI 1209 is a Subgiant star.

What temperature is star TOI 1209?

The star TOI 1209 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.

About Stellar Catalog

Working with real data

Data in Stellar Catalog come from trusted scientific sources. Primary source is Gaia space telescope mapping the stars in Milky Way. Other sources include research papers, Simbad catalog and Exoplanet.eu database.

Estimated values

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.

Fresh and validated

Stellar Catalog is continuously updated with new information from research papers. Stellar and planetary data are validated by automatic processes as well as humans.