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HD 87424
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Star HD 87424

Binary star HD 87424 is located 76 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
76 light years
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HD 87424 A

Orange star, BY Draconis variable
Spectral class: K2Vk:

Location +

Ascension iconRight ascension: 10h 4m 37.456s
Declination iconDeclination: -11° 43' 47.312'' (equatorial region)
Parallax iconParallax: 42.956
Distance iconSun distance: 75.928 ly | 23.3 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: 80 % M Sun
| 859 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 87424 A is unknown. Based on its other characteristics, it is estimated to be about 80 % 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: 80 % R Sun
| 7.9 R Jupiter
(estimate)
+
Star size
Radius of the star HD 87424 A is not known. Its estimated value based on other similar stars is about 80 % 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: 5000 K
 (estimate)
+
Star temperature
Surface temperature of HD 87424 A is estimated to be 4992 K, which is 87 % 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): 8.2
Magnitude iconAbsolute magnitude (V): 6.3
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 87424 B

Red dwarf, High proper motion star

Basic characteristic

icon weight
Mass: 10 % M Sun
| 146.7 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 87424 B is unknown. Based on its other characteristics, it is estimated to be about 10 % 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
| 1.6 R Jupiter
(estimate)
+
Star size
Radius of the star HD 87424 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: 3000 K
 (estimate)
+
Star temperature
Surface temperature of HD 87424 B is estimated to be 2960 K, which is 52 % 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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HD 87424 system structure

 HD 87424 A
HD 87424 B

More about HD 87424

      a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface. HD 87424 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. 

      HD 87424 is a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface.
Other designations of this star
Gaia EDR3 3766401961693098368
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External sources
simbad icon
Simbad database (HD 87424B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 3766401961693098624)
Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 87424 system from the Sun?

The HD 87424 system is 76 light years or 23.3 parsecs from the Sun.

What galaxy is the HD 87424 star in?

The HD 87424 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 87424 system?

The HD 87424 system contains 2 stars.

What type of star is the HD 87424?

The primary in the HD 87424 system is a Orange star star.

What temperature is the HD 87424?

The primary in the HD 87424 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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