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FN Boötes
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Star FN Boötes

Binary star FN Boötes is located 106 light years away from the Sun. It consists of a orange star and a red dwarf. There is at least one exoplanet in this system.
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Sun distance
106 light years
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FN Boötes A

Orange star, High proper motion star
Spectral class: K6V

Location +

Ascension iconRight ascension: 15h 31m 47.000s
Declination iconDeclination: 47° 3' 25.000'' (northern hemisphere)
Parallax iconParallax: 30.760
Distance iconSun distance: 106.033 ly | 32.5 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: 60 % M Sun
| 629 M Jupiter
+
Star mass
Mass of the star FN Boötes A is 0.6 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: 61 % R Sun
| 6.1 R Jupiter
+
Star size
Radius of the star FN Boötes A is 0.61 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: 1411 K | 0.24 T Sun
+
Star temperature
Surface temperature of FN Boötes A is 1411 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

Magnitude iconApparent magnitude (V): 10
Magnitude iconAbsolute magnitude (V): 7.4
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

FN Boötes B

Red dwarf, High proper motion star
Spectral class: M4V

Basic characteristic

icon weight
Mass: 30 % M Sun
| 272.4 M Jupiter
 (estimate)
+
Star mass
The mass of the star FN Boötes B is unknown. Based on its other characteristics, it is estimated to be about 30 % 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: 30 % R Sun
| 2.9 R Jupiter
(estimate)
+
Star size
Radius of the star FN Boötes B is not known. Its estimated value based on other similar stars is about 30 % 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: 3300 K
 (estimate)
+
Star temperature
Surface temperature of FN Boötes B is estimated to be 3300 K, which is 57 % 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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FN Boötes system structure

 FN Boötes A
FN Boötes A b 0.02 AU 2.5 M⊕ 1.2 R⊕ 1.5 days
FN Boötes B

More about FN Boötes

       FN Boötes can be found in northern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
HIP 7642, GJ 9522A, Gliese 9522, TOI 1411, BD+47 2239 A, TIC 116483514, TYC 3483-769-1, WISEA J153146.98+470321.5, G 201-51, 2MASS J15314678+4703251
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External sources
icon study
simbad icon
Simbad database (BD+47 2239B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)

Frequently Asked Questions

How far is the FN Boötes system from the Sun?

The FN Boötes system is 106 light years or 32.5 parsecs from the Sun.

What galaxy is the FN Boötes star in?

The FN Boötes is in the Milky Way galaxy just like the Sun.

How many stars are in the FN Boötes system?

The FN Boötes system contains 2 stars.

What type of star is the FN Boötes?

The primary in the FN Boötes system is a Orange star star.

What temperature is star FN Boötes?

The primary in the FN Boötes system has a temperature of 1411 K. Find out more about the temperature of stars in Stellar guide
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