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9 Sagittarii
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Star 9 Sagittarii

Binary star 9 Sagittarii is located 6656 light years away from the Sun. It consists of 2 blue star stars. For now, there are no known exoplanets in this star system.
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Sun distance
6656 light years
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9 Sagittarii A

Blue star
Spectral class: O3.5V((f+))

Location +

Ascension iconRight ascension: 18h 3m 52.445s
Declination iconDeclination: -24° 21' 38.627'' (southern hemisphere)
Parallax iconParallax: 0.490
Distance iconSun distance: 6,656.244 ly | 2,040.8 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: 5500 % M Sun
| 57616 M Jupiter
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Star mass
Mass of the star 9 Sagittarii A is 55 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: 1310 % R Sun
| 130.4 R Jupiter
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Star size
Radius of the star 9 Sagittarii A is 13.1 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: 43850 K | 7.59 T Sun
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Star temperature
Surface temperature of 9 Sagittarii A is 43850 K, which is 759 % 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: 562000 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

9 Sagittarii B

Blue star
Spectral class: O5–5.5V((f))

Basic characteristic

icon weight
Mass: 3600 % M Sun
| 37713 M Jupiter
+
Star mass
Mass of the star 9 Sagittarii B is 55 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: 1120 % R Sun
| 111.5 R Jupiter
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Star size
Radius of the star 9 Sagittarii B is 11.2 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: 40850 K | 7.07 T Sun
+
Star temperature
Surface temperature of 9 Sagittarii B is 40850 K, which is 707 % 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: 316000 L Sun
+
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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9 Sagittarii system structure

 9 Sagittarii A
9 Sagittarii B

More about 9 Sagittarii

       9 Sagittarii can be found in southern celestial hemisphere.
Other designations of this star
9 Sgr, HR 6736, HIC 88469, HIP 88469, HD 164794, CD−24°13814, 2MASS J18035245-2421386, WDS J18039-2422
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Frequently Asked Questions

How far is the 9 Sagittarii system from the Sun?

The 9 Sagittarii system is 6656 light years or 2,040.8 parsecs from the Sun.

What galaxy is the 9 Sagittarii star in?

The 9 Sagittarii is in the Milky Way galaxy just like the Sun.

How many stars are in the 9 Sagittarii system?

The 9 Sagittarii system contains 2 stars.

What type of star is the 9 Sagittarii?

The primary in the 9 Sagittarii system is a Blue star star.

What temperature is star 9 Sagittarii?

The primary in the 9 Sagittarii system has a temperature of 43850 K. Find out more about the temperature of stars in Stellar guide
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