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GD 165
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Star GD 165

Binary star GD 165 is located 109 light years away from the Sun. It consists of a white dwarf and a brown dwarf. For now, there are no known exoplanets in this star system.
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Sun distance
109 light years
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GD 165 A

White dwarf
Spectral class: DA4.1 C

Location +

Ascension iconRight ascension: 14h 24m 39.144s
Declination iconDeclination: 9° 17' 13.980'' (equatorial region)
Parallax iconParallax: 29.934
Distance iconSun distance: 108.960 ly | 33.4 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: 64 % M Sun
| 670 M Jupiter
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Star mass
Mass of the star GD 165 A is 0.64 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: 1.2 % R Sun
| 0.1 R Jupiter
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Star size
Radius of the star GD 165 A is 0.0124 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: 12130 K | 2.1 T Sun
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Star temperature
Surface temperature of GD 165 A is 12130 K, which is 210 % 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
time icon
Age: 3 billions years | 0.65 Sun
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Star age
Star GD 165 A is 3 billion years old, which is about 0.65 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age in StellarGuide
luminosity icon
Luminosity: 0.003 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): 14.3
Magnitude iconAbsolute magnitude (V): 11.7
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

GD 165 B

Brown dwarf
Spectral class: L4

Basic characteristic

icon weight
Mass: 5.97 % M Sun
| 63 M Jupiter
+
Star mass
Mass of the star GD 165 B is 0.64 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: 10.3 % R Sun
| 1 R Jupiter
+
Star size
Radius of the star GD 165 B is 0.103 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: 1400 K
 (estimate)
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Star temperature
Surface temperature of GD 165 B is estimated to be 1378 K, which is 24 % 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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GD 165 system structure

 GD 165 A
GD 165 B

More about GD 165

       GD 165 can be found in northern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
LSPM J1424+0917, 2MASS J14243914+0917139, WDS J14247+0917A, WD 1422+095, V* CX Boo, ** ZUC 12, L 1124-10, LP 500-17, LTT 14236, NLTT 37242, SDSS J142439.10+091713.7, TIC 421809466
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External sources
simbad icon
Simbad database (GD 165B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)

Frequently Asked Questions

How far is the GD 165 system from the Sun?

The GD 165 system is 109 light years or 33.4 parsecs from the Sun.

What galaxy is the GD 165 star in?

The GD 165 is in the Milky Way galaxy just like the Sun.

How many stars are in the GD 165 system?

The GD 165 system contains 2 stars.

What type of star is the GD 165?

The primary in the GD 165 system is a White dwarf star.

What temperature is star GD 165?

The primary in the GD 165 system has a temperature of 12130 K. Find out more about the temperature of stars in Stellar guide
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