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HD 154391
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Star HD 154391

Red giant HD 154391 is located 331 light years away from the Sun. It is a single star of spectral class K1 III, that has 200 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
331 light years
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HD 154391

Red giant
Spectral class: K1 III

Location +

Ascension iconRight ascension: 17h 1m 16.832s
Declination iconDeclination: 60° 38' 56.141'' (northern hemisphere)
Parallax iconParallax: 9.844
Distance iconSun distance: 331.314 ly | 101.6 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: 200 % M Sun
| 2095 M Jupiter
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Star mass
Mass of the star HD 154391 is 2.0 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: 846 % R Sun
| 84.2 R Jupiter
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Star size
Radius of the star HD 154391 is 8.46 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: 4807 K | 0.83 T Sun
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Star temperature
Surface temperature of HD 154391 is 4807 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
luminosity icon
Luminosity: 38.12 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

Magnitude iconApparent magnitude (V): 6.1
Magnitude iconAbsolute magnitude (V): 1.1
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 154391 system structure

 HD 154391

More about HD 154391

Star HD 154391 is is approximately 8 times bigger than the Sun and temperature on its surface is around 4807 K (4534 °C), which is about 83 % of Sun's temperature.
       HD 154391 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
Gaia DR3 1438038102484626048
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External sources
icon study
gaia icon
Gaia database (Gaia DR3 1438038102484626048)
Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 154391 system from the Sun?

The HD 154391 system is 331 light years or 101.6 parsecs from the Sun.

What galaxy is the HD 154391 star in?

The HD 154391 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 154391 system?

The HD 154391 is a single star, there are no other known stars in the system.

What type of star is the HD 154391?

The star HD 154391 is a Red giant star.

What temperature is star HD 154391?

The star HD 154391 has an effective temperature of 4807 K. Find out more about the temperature of stars in Stellar guide
Class of stars Red giant
White dwarfs are the hot, extremely dense stellar remnants left behind by stars that originally had masses between about 0.5 and 8 times the mass of the Sun during their main sequence lifetimes. After exhausting their nuclear fuel, these stars shed their outer layers and leave behind a compact core. Although white dwarfs contain between roughly 0.2 and 1.44 solar masses, this mass is packed into a volume comparable to that of an Earth-sized planet, making them some of the densest objects in the Universe.
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