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Gamma Draconis
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Star Gamma Draconis

Red giant Gamma Draconis is located 154 light years away from the Sun. It is a single star of spectral class K5 III, that has 172 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
154 light years
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Gamma Draconis

Red giant
Spectral class: K5 III

Location +

Ascension iconRight ascension: 17h 56m 36.370s
Declination iconDeclination: 51° 29' 20.024'' (northern hemisphere)
Parallax iconParallax: 21.140
Distance iconSun distance: 154.284 ly | 47.3 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: 172 % M Sun
| 1802 M Jupiter
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Star mass
Mass of the star Gamma Draconis is 1.72 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: 4815 % R Sun
| 479.2 R Jupiter
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Star size
Radius of the star Gamma Draconis is 48.15 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: 3930 K | 0.68 T Sun
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Star temperature
Surface temperature of Gamma Draconis is 3930 K, which is 68 % 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: 471 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
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Gamma Draconis system structure

 Gamma Draconis

More about Gamma Draconis

Star Gamma Draconis is is much bigger than the Sun and temperature on its surface is around 3930 K (3657 °C), which is about 68 % of Sun's temperature.
       Gamma Draconis can be found in northern celestial hemisphere.
Other designations of this star
Etamin, Etanin, Ettanin, Rastaban, Rasaben, Zenith star, 33 Draconis, BD +51°2282, FK5 676, HD 164058, HIP 87833, HIC 87833, HR 6705, SAO 30653
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Frequently Asked Questions

How far is the Gamma Draconis system from the Sun?

The Gamma Draconis system is 154 light years or 47.3 parsecs from the Sun.

What galaxy is the Gamma Draconis star in?

The Gamma Draconis is in the Milky Way galaxy just like the Sun.

How many stars are in the Gamma Draconis system?

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

What type of star is the Gamma Draconis?

The star Gamma Draconis is a Red giant star.

What temperature is star Gamma Draconis?

The star Gamma Draconis has an effective temperature of 3930 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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Estimated values
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