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HD 199509
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Star HD 199509

Binary star HD 199509 is located 79 light years away from the Sun. It consists of a yellow star and a red dwarf. There is at least one exoplanet in this system.
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Sun distance
79 light years
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HD 199509 A

Yellow star, High proper motion star
Spectral class: G1V

Location +

Ascension iconRight ascension: 21h 9m 22.762s
Declination iconDeclination: -82° 1' 39.002'' (southern hemisphere)
Parallax iconParallax: 41.063
Distance iconSun distance: 79.429 ly | 24.4 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: 104 % M Sun
| 1089 M Jupiter
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Star mass
Mass of the star HD 199509 A is 1.04 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: 90 % R Sun
| 9 R Jupiter
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Star size
Radius of the star HD 199509 A is 0.9 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: 5796 K | 1 T Sun
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Star temperature
Surface temperature of HD 199509 A is 5796 K, which is 100 % 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 iconApparent magnitude (V): 7
Magnitude iconAbsolute magnitude (V): 5.1
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

HD 199509 B

Red dwarf, , High proper motion star

Location +

Distance iconDistance from the primary: 18.624 AU

Basic characteristic

temperature iconTemperature: 5900 K
 (estimate)
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Star temperature
Surface temperature of HD 199509 B is estimated to be 5902 K, which is 102 % 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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HD 199509 system structure

 HD 199509 A
HD 199509 A b 0.43 AU 43.2 M⊕ 99.6 days
HD 199509 B 18.624 AU

More about HD 199509

       HD 199509 can be found in southern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope.
Other designations of this star
Gaia EDR3 6348288635054855680
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Frequently Asked Questions

How far is the HD 199509 system from the Sun?

The HD 199509 system is 79 light years or 24.4 parsecs from the Sun.

What galaxy is the HD 199509 star in?

The HD 199509 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 199509 system?

The HD 199509 system contains 2 stars.

What type of star is the HD 199509?

The primary in the HD 199509 system is a Yellow star star.

What temperature is star HD 199509?

The primary in the HD 199509 system has a temperature of 5796 K. Find out more about the temperature of stars in Stellar guide
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