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HD 149790
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Star HD 149790

Binary star HD 149790 is located 454 light years away from the Sun. It consists of a yellow-white star and a brown dwarf. For now, there are no known exoplanets in this star system.
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Sun distance
454 light years
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HD 149790 A

Yellow-White star
Spectral class: F3V

Location +

Ascension iconRight ascension: 16h 33m 2.000s
Declination iconDeclination: -36° 47' 27.000'' (southern hemisphere)
Parallax iconParallax: 7.180
Distance iconSun distance: 454.256 ly | 139.3 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: 140 % M Sun
| 1467 M Jupiter
+
Star mass
Mass of the star HD 149790 A is 1.4 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: 160 % R Sun
| 16.2 R Jupiter
(estimate)
+
Star size
Radius of the star HD 149790 A is not known. Its estimated value based on other similar stars is about 160 % 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: 6700 K
 (estimate)
+
Star temperature
Surface temperature of HD 149790 A is estimated to be 6697 K, which is 116 % 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 iconAbsolute magnitude (V): -5.7
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

HD 149790 B

Brown dwarf

Basic characteristic

icon weight
Mass: 4 % M Sun
| 42 M Jupiter
+
Star mass
Mass of the star HD 149790 B is 1.4 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
temperature iconTemperature: 6700 K
 (estimate)
+
Star temperature
Surface temperature of HD 149790 B is estimated to be 6697 K, which is 116 % 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 iconAbsolute magnitude (V): -5.8
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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HD 149790 system structure

 HD 149790 A
HD 149790 B

More about HD 149790

       HD 149790 can be found in southern celestial hemisphere.
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Frequently Asked Questions

How far is the HD 149790 system from the Sun?

The HD 149790 system is 454 light years or 139.3 parsecs from the Sun.

What galaxy is the HD 149790 star in?

The HD 149790 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 149790 system?

The HD 149790 system contains 2 stars.

What type of star is the HD 149790?

The primary in the HD 149790 system is a Yellow-White star star.

What temperature is the HD 149790?

The primary in the HD 149790 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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