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HW Virginis
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Star HW Virginis

Binary star HW Virginis is located 565 light years away from the Sun. It consists of a hot subdwarf and a red dwarf. There is at least one exoplanet in this system.
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Sun distance
565 light years
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HW Virginis A

Hot subdwarf
Spectral class: sdB

Location +

Ascension iconRight ascension: 12h 44m 20.252s
Declination iconDeclination: -8° 40' 17.099'' (equatorial region)
Parallax iconParallax: 5.773
Distance iconSun distance: 564.985 ly | 173.2 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: 41.8 % M Sun
| 438 M Jupiter
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Star mass
Mass of the star HW Virginis A is 0.418 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: 18.3 % R Sun
| 1.8 R Jupiter
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Star size
Radius of the star HW Virginis A is 0.183 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: 28488 K | 4.93 T Sun
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Star temperature
Surface temperature of HW Virginis A is 28488 K, which is 493 % 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
luminosity icon
Luminosity: 19.7 L Sun
+
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

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

HW Virginis B

Red dwarf

Basic characteristic

icon weight
Mass: 12.8 % M Sun
| 134 M Jupiter
+
Star mass
Mass of the star HW Virginis B is 0.418 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: 17.5 % R Sun
| 1.7 R Jupiter
+
Star size
Radius of the star HW Virginis B is 0.175 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: 3084 K | 0.53 T Sun
+
Star temperature
Surface temperature of HW Virginis B is 3084 K, which is 53 % 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
luminosity icon
Luminosity: 0.003 L Sun
+
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

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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HW Virginis system structure

 HW Virginis A
HW Virginis A b
unconfirmed
 n/a 5404.4 M⊕ 16000 days
HW Virginis B

More about HW Virginis

       HW Virginis 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
BD−07 3477, HIP 62157, 2MASS J12442024-0840168, HW Vir, Gaia DR3 3675067076961979264
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External sources
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Frequently Asked Questions

How far is the HW Virginis system from the Sun?

The HW Virginis system is 565 light years or 173.2 parsecs from the Sun.

What galaxy is the HW Virginis star in?

The HW Virginis is in the Milky Way galaxy just like the Sun.

How many stars are in the HW Virginis system?

The HW Virginis system contains 2 stars.

What type of star is the HW Virginis?

The primary in the HW Virginis system is a Hot subdwarf star.

What temperature is star HW Virginis?

The primary in the HW Virginis system has a temperature of 28488 K. Find out more about the temperature of stars in Stellar guide
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