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HD 188807
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Star HD 188807

Binary star HD 188807 is located 58 light years away from the Sun. It consists of a orange star and a red dwarf. For now, there are no known exoplanets in this star system.
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Sun distance
58 light years
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HD 188807 A

Orange star, High proper motion star
Spectral class: K7V

Location +

Ascension iconRight ascension: 19h 57m 19.543s
Declination iconDeclination: -12° 34' 13.002'' (equatorial region)
Parallax iconParallax: 55.824
Distance iconSun distance: 58.426 ly | 17.9 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: 70 % M Sun
| 712.3 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 188807 A is unknown. Based on its other characteristics, it is estimated to be about 70 % of the Sun's mass.

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: 70 % R Sun
| 6.7 R Jupiter
(estimate)
+
Star size
Radius of the star HD 188807 A is not known. Its estimated value based on other similar stars is about 70 % 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: 4100 K
 (estimate)
+
Star temperature
Surface temperature of HD 188807 A is estimated to be 4062 K, which is 71 % 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): 9.3
Magnitude iconAbsolute magnitude (V): 8
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 188807 B

Red dwarf, High proper motion star
Spectral class: M5V

Basic characteristic

icon weight
Mass: 20 % M Sun
| 188.6 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 188807 B is unknown. Based on its other characteristics, it is estimated to be about 20 % of the Sun's mass.

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: 20 % R Sun
| 2.2 R Jupiter
(estimate)
+
Star size
Radius of the star HD 188807 B is not known. Its estimated value based on other similar stars is about 20 % 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: 3200 K
 (estimate)
+
Star temperature
Surface temperature of HD 188807 B is estimated to be 3207 K, which is 55 % 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): 15
Magnitude iconAbsolute magnitude (V): 13.7
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
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HD 188807 system structure

 HD 188807 A
HD 188807 B

More about HD 188807

       HD 188807 can be found in southern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
LP 754-5, LHS 3502, GJ 773, Gliese 773, HIP 98204, 2MASS J19571964-1234044, TIC 48769732, TYC 5746-230-1, Gaia EDR3 4188997606567280384
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External sources
simbad icon
Simbad database (LP 754-5)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 4188996885011268608)
Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 188807 system from the Sun?

The HD 188807 system is 58 light years or 17.9 parsecs from the Sun.

What galaxy is the HD 188807 star in?

The HD 188807 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 188807 system?

The HD 188807 system contains 2 stars.

What type of star is the HD 188807?

The primary in the HD 188807 system is a Orange star star.

What temperature is the HD 188807?

The primary in the HD 188807 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
Closest stars

 EGGR 498
 - 3.1 ly

HD 183870
 - 6.4 ly

LP 694-16
 - 7 ly

Gaia DR2 4196294515480813056
 - 7 ly

2MASSI J2002-0521
 - 7.4 ly
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