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HD 29399
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Star HD 29399

Binary star HD 29399 is located 144 light years away from the Sun. It consists of a red giant and a orange star. There is at least one exoplanet in this system.
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Sun distance
144 light years
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HD 29399 A

Red giant
Spectral class: K1III

Location +

Ascension iconRight ascension: 4h 33m 33.680s
Declination iconDeclination: -62° 49' 25.537'' (southern hemisphere)
Parallax iconParallax: 22.724
Distance iconSun distance: 143.529 ly | 44.0 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: 115 % M Sun
| 1205 M Jupiter
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Star mass
Mass of the star HD 29399 A is 1.15 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: 447 % R Sun
| 44.5 R Jupiter
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Star size
Radius of the star HD 29399 A is 4.47 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: 4803 K | 0.83 T Sun
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Star temperature
Surface temperature of HD 29399 A is 4803 K, which is 83 % 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
time icon
Age: 6.2 billions years | 1.35 Sun
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Star age
Star HD 29399 A is 6.2 billion years old, which is about 1.35 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age 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

HD 29399 B

Orange star

Location +

Distance iconDistance from the primary: 1398 AU

Basic characteristic

temperature iconTemperature: 4700 K
 (estimate)
+
Star temperature
Surface temperature of HD 29399 B is estimated to be 4741 K, which is 81 % 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 29399 system structure

 HD 29399 A
HD 29399 A b 1.91 AU 499.1 M⊕ 892.7 days
HD 29399 B 1398 AU

More about HD 29399

       HD 29399 can be found in southern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope.
Other designations of this star
CD-63 154, Gaia DR3 4675576135153914368
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External sources
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Frequently Asked Questions

How far is the HD 29399 system from the Sun?

The HD 29399 system is 144 light years or 44.0 parsecs from the Sun.

What galaxy is the HD 29399 star in?

The HD 29399 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 29399 system?

The HD 29399 system contains 2 stars.

What type of star is the HD 29399?

The primary in the HD 29399 system is a Red giant star.

What temperature is star HD 29399?

The primary in the HD 29399 system has a temperature of 4803 K. Find out more about the temperature of stars in Stellar guide
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