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HD 34721
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Star HD 34721

Binary star HD 34721 is located 81 light years away from the Sun. It consists of a red dwarf and a yellow star. For now, there are no known exoplanets in this star system.
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Sun distance
81 light years
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HD 34721 A

Yellow star, High proper motion star
Spectral class: G0V

Location +

Ascension iconRight ascension: 5h 18m 50.914s
Declination iconDeclination: -18° 7' 47.210'' (equatorial region)
Parallax iconParallax: 40.478
Distance iconSun distance: 80.575 ly | 24.7 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: 110 % M Sun
| 1152.3 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 34721 A 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
| 12.2 R Jupiter
(estimate)
+
Star size
Radius of the star HD 34721 A 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: 6000 K
 (estimate)
+
Star temperature
Surface temperature of HD 34721 A is estimated to be 5966 K, which is 104 % 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
Magnitude iconAbsolute magnitude (V): 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

HD 34721 B

Red dwarf, , High proper motion star

Basic characteristic

icon weight
Mass: 30 % M Sun
| 303.8 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 34721 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
| 3.3 R Jupiter
(estimate)
+
Star size
Radius of the star HD 34721 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 HD 34721 B is estimated to be 3341 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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HD 34721 system structure

 HD 34721 A
HD 34721 B

More about HD 34721

       HD 34721 can be found in southern celestial hemisphere, and it is possible to see it with naked eye. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
HIP 24786, HR 1747, TYC 5906-910-1, USNO-A2 0675-01998636, Gaia EDR3 2981583790287411200
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External sources
gaia icon
Gaia database (Gaia EDR3 2981583790285440000)
Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 34721 system from the Sun?

The HD 34721 system is 81 light years or 24.7 parsecs from the Sun.

What galaxy is the HD 34721 star in?

The HD 34721 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 34721 system?

The HD 34721 system contains 2 stars.

What type of star is the HD 34721?

The primary in the HD 34721 system is a Yellow star star.

What temperature is the HD 34721?

The primary in the HD 34721 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
Closest stars

 LP 777-18
 - 3.8 ly

HD 34865
 - 4.4 ly

UCAC4 363-007808
 - 6.7 ly

CD-23 2363
 - 8.9 ly

LP 717-3
 - 9.2 ly
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