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TOI 2490
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Star TOI 2490

Binary star TOI 2490 is located 873 light years away from the Sun. It consists of a yellow star and a orange star. There is at least one exoplanet in this system.
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Sun distance
873 light years
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TOI 2490 A

Yellow star

Location +

Ascension iconRight ascension: 4h 52m 29.888s
Declination iconDeclination: -36° 15' 25.546'' (southern hemisphere)
Parallax iconParallax: 3.736
Distance iconSun distance: 872.969 ly | 267.7 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: 100.4 % M Sun
| 1052 M Jupiter
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Star mass
Mass of the star TOI 2490 A is 1.004 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: 111 % R Sun
| 11 R Jupiter
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Star size
Radius of the star TOI 2490 A is 1.105 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: 5558 K | 0.96 T Sun
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Star temperature
Surface temperature of TOI 2490 A is 5558 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: 7.9 billions years | 1.72 Sun
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Star age
Star TOI 2490 A is 7.9 billion years old, which is about 1.72 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
luminosity icon
Luminosity: 1.053 L Sun
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Star luminosity
Luminosity is the total amount of energy a star gives off every second. Think of it as the star’s true brightness — not just how bright it looks from Earth. This is important because some stars may appear dim simply because they are far away, not because they’re actually faint... icon More about Star luminosity in StellarGuide

Photometry

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

TOI 2490 B

Orange star

Location +

Distance iconDistance from the primary: 13382 AU

Basic characteristic

icon weight
Mass: 80 % M Sun
| 806.6 M Jupiter
 (estimate)
+
Star mass
The mass of the star TOI 2490 B is unknown. Based on its other characteristics, it is estimated to be about 80 % 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: 70 % R Sun
| 7.1 R Jupiter
(estimate)
+
Star size
Radius of the star TOI 2490 B is not known. Its estimated value based on other similar stars is about 70 % 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: 4800 K
 (estimate)
+
Star temperature
Surface temperature of TOI 2490 B is estimated to be 4828 K, which is 83 % 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

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 2490 system structure

 TOI 2490 A
TOI 2490 A b 0.31 AU 23398 M⊕ 11.2 R⊕ 60.3 days
TOI 2490 B 13382 AU

More about TOI 2490

       TOI 2490 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
TIC 77437543, Gaia DR3 4818818585874648320
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External sources
icon study
gaia icon
Gaia database (Gaia DR3 4818818482795434112)
Archive from the Gaia mission

Frequently Asked Questions

How far is the TOI 2490 system from the Sun?

The TOI 2490 system is 873 light years or 267.7 parsecs from the Sun.

What galaxy is the TOI 2490 star in?

The TOI 2490 is in the Milky Way galaxy just like the Sun.

How many stars are in the TOI 2490 system?

The TOI 2490 system contains 2 stars.

What type of star is the TOI 2490?

The primary in the TOI 2490 system is a Yellow star star.

What temperature is star TOI 2490?

The primary in the TOI 2490 system has a temperature of 5558 K. Find out more about the temperature of stars in Stellar guide

stellar brief logoStellar Brief

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24. 10. 2026
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A planet’s helium atmosphere streams ahead of its orbit, while infrared observations reveal the hidden rhythms of its star. New work also shows how neutron-star tilt can reshape X-ray light, traces the past of massive blue supergiants, and maps cloudy and clear zones on the hot Jupiter WASP-43 b.
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