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HD 87304
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Star HD 87304

Binary star HD 87304 is located 1480 light years away from the Sun. It consists of a white-blue star and a yellow star. For now, there are no known exoplanets in this star system.
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Sun distance
1480 light years
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HD 87304 A

White-Blue star
Spectral class: A8V kA2.5mA2.5

Location +

Ascension iconRight ascension: 10h 3m 23.430s
Declination iconDeclination: -33° 41' 2.585'' (southern hemisphere)
Parallax iconParallax: 2.204
Distance iconSun distance: 1,479.828 ly | 453.7 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: 170 % M Sun
| 1812.3 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 87304 A is unknown. Based on its other characteristics, it is estimated to be about 170 % 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: 250 % R Sun
| 24.6 R Jupiter
(estimate)
+
Star size
Radius of the star HD 87304 A is not known. Its estimated value based on other similar stars is about 250 % 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: 7750 K | 1.34 T Sun
+
Star temperature
Surface temperature of HD 87304 A is 7750 K, which is 134 % 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): 9.5
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

HD 87304 B

Yellow star

Basic characteristic

icon weight
Mass: 110 % M Sun
| 1141.9 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 87304 B is unknown. Based on its other characteristics, it is estimated to be about 110 % 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: 120 % R Sun
| 11.6 R Jupiter
(estimate)
+
Star size
Radius of the star HD 87304 B is not known. Its estimated value based on other similar stars is about 120 % 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: 5900 K
 (estimate)
+
Star temperature
Surface temperature of HD 87304 B is estimated to be 5902 K, which is 102 % 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): 12.6
Magnitude iconAbsolute magnitude (V): 4.3
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
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HD 87304 system structure

 HD 87304 A
HD 87304 B

More about HD 87304

       HD 87304 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
CD-33 6615 B, CD-33 6615 A, Gaia DR3 5459527444723831936
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External sources
icon study
Searching for lambda Boo stars in binary systems
Scientific study, Accepted: 10. 03. 2025

Frequently Asked Questions

How far is the HD 87304 system from the Sun?

The HD 87304 system is 1480 light years or 453.7 parsecs from the Sun.

What galaxy is the HD 87304 star in?

The HD 87304 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 87304 system?

The HD 87304 system contains 2 stars.

What type of star is the HD 87304?

The primary in the HD 87304 system is a White-Blue star star.

What temperature is star HD 87304?

The primary in the HD 87304 system has a temperature of 7750 K. Find out more about the temperature of stars in Stellar guide
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