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HD 21175
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Star HD 21175

Binary star HD 21175 is located 58 light years away from the Sun. It consists of 2 orange star stars. 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 21175 A

Orange star, High proper motion star
Spectral class: K0V

Location +

Ascension iconRight ascension: 3h 23m 35.350s
Declination iconDeclination: -40° 4' 34.402'' (southern hemisphere)
Parallax iconParallax: 56.557
Distance iconSun distance: 57.669 ly | 17.7 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: 90 % M Sun
| 900.9 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 21175 A is unknown. Based on its other characteristics, it is estimated to be about 90 % 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: 90 % R Sun
| 8.6 R Jupiter
(estimate)
+
Star size
Radius of the star HD 21175 A is not known. Its estimated value based on other similar stars is about 90 % 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: 5300 K
 (estimate)
+
Star temperature
Surface temperature of HD 21175 A is estimated to be 5259 K, which is 92 % 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): 6.9
Magnitude iconAbsolute magnitude (V): 5.7
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

HD 21175 B

Orange star, High proper motion star

Basic characteristic

icon weight
Mass: 70 % M Sun
| 712.3 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 21175 B 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 21175 B 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 21175 B 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 iconAbsolute magnitude (V): -1.2
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 21175 system structure

 HD 21175 A
HD 21175 B

More about HD 21175

       HD 21175 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
Gaia EDR3 4852870701505115904
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External sources
simbad icon
Simbad database (HD 21175B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 4852870701504645504)
Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 21175 system from the Sun?

The HD 21175 system is 58 light years or 17.7 parsecs from the Sun.

What galaxy is the HD 21175 star in?

The HD 21175 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 21175 system?

The HD 21175 system contains 2 stars.

What type of star is the HD 21175?

The primary in the HD 21175 system is a Orange star star.

What temperature is the HD 21175?

The primary in the HD 21175 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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