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27 Hydra
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Star 27 Hydra

Triple star system 27 Hydra is located 223 light years away from the Sun. It is a system with 3 stars. There is at least one exoplanet in this system.
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Sun distance
223 light years
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27 Hydra A

Red giant
Spectral class: K0III C

Location +

Ascension iconRight ascension: 9h 20m 29.005s
Declination iconDeclination: -9° 33' 20.967'' (equatorial region)
Parallax iconParallax: 14.630
Distance iconSun distance: 222.930 ly | 68.4 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: 232 % M Sun
| 2430 M Jupiter
+
Star mass
Mass of the star 27 Hydra A is 2.32 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: 969 % R Sun
| 96.4 R Jupiter
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Star size
Radius of the star 27 Hydra A is 9.69 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: 5078 K | 0.88 T Sun
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Star temperature
Surface temperature of 27 Hydra A is 5078 K, which is 88 % 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: 1.91 billions years | 0.42 Sun
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Star age
Star 27 Hydra A is 1.91 billion years old, which is about 0.42 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

Magnitude iconApparent magnitude (V): 4.8
Magnitude iconAbsolute magnitude (V): 0.6
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

27 Hydra B

Yellow-White star
Spectral class: F3

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

27 Hydra C

Orange star
Spectral class: K2

Basic characteristic

icon weight
Mass: 160 % M Sun
| 1634.2 M Jupiter
 (estimate)
+
Star mass
The mass of the star 27 Hydra C is unknown. Based on its other characteristics, it is estimated to be about 160 % 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
temperature iconTemperature: 5100 K
 (estimate)
+
Star temperature
Surface temperature of 27 Hydra C is estimated to be 5082 K, which is 88 % 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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27 Hydra system structure

Stars B and C form a pair, which orbits the primary star A.
 27 Hydra A
27 Hydra A b 5.9 AU 3179.1 M⊕ 3400 days
27 Hydra B
27 Hydra C

More about 27 Hydra

       27 Hydra 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
27 Hya, ADS 7311, HD 80586, HIP 45811, HR 3709, 2MASS J09202901-0933207, TIC 60954380, TYC 5463-1514-1, Gaia DR3 5742852762061978880
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Frequently Asked Questions

How far is the 27 Hydra system from the Sun?

The 27 Hydra system is 223 light years or 68.4 parsecs from the Sun.

What galaxy is the 27 Hydra star in?

The 27 Hydra is in the Milky Way galaxy just like the Sun.

How many stars are in the 27 Hydra system?

The 27 Hydra system contains 3 stars.

What type of star is the 27 Hydra?

The primary in the 27 Hydra system is a Red giant star.

What temperature is star 27 Hydra?

The primary in the 27 Hydra system has a temperature of 5078 K. Find out more about the temperature of stars in Stellar guide
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