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Pi1 Gruis
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Star Pi1 Gruis

Binary star Pi1 Gruis is located 527 light years away from the Sun. It consists of a red giant and a yellow star. For now, there are no known exoplanets in this star system.
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Sun distance
527 light years
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Pi1 Gruis A

Red giant
Spectral class: S5.7

Location +

Ascension iconRight ascension: 22h 22m 44.263s
Declination iconDeclination: -45° 56' 52.957'' (southern hemisphere)
Parallax iconParallax: 6.186
Distance iconSun distance: 527.262 ly | 161.7 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: 150 % M Sun
| 1571 M Jupiter
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Star mass
Mass of the star Pi1 Gruis A is 1.5 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: 40000 % R Sun
| 3980.5 R Jupiter
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Star size
Radius of the star Pi1 Gruis A is 400 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: 3100 K | 0.54 T Sun
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Star temperature
Surface temperature of Pi1 Gruis A is 3100 K, which is 54 % 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
luminosity icon
Luminosity: 7244 L Sun
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Star luminosity
Luminosity is the total amount of energy a star gives off every second. Think of it as the star’s true brightness — not just how bright it looks from Earth. This is important because some stars may appear dim simply because they are far away, not because they’re actually faint... icon More about Star luminosity 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

Pi1 Gruis B

Yellow star
Spectral class: G0V

Basic characteristic

icon weight
Mass: 100 % M Sun
| 1048 M Jupiter
+
Star mass
Mass of the star Pi1 Gruis B is 1.5 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: 110 % R Sun
| 11.1 R Jupiter
(estimate)
+
Star size
Radius of the star Pi1 Gruis B is not known. Its estimated value based on other similar stars is about 110 % 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 Pi1 Gruis B 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): 10.9
Magnitude iconAbsolute magnitude (V): 4.9
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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Pi1 Gruis system structure

 Pi1 Gruis A
Pi1 Gruis B

More about Pi1 Gruis

       Pi1 Gruis 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
Gaia EDR3 6518817665842868352, CD−46° 14292, HR 8521, HD 212087, SAO 231105, HIP 110478, Gaia EDR3 6518817665843312000
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Frequently Asked Questions

How far is the Pi1 Gruis system from the Sun?

The Pi1 Gruis system is 527 light years or 161.7 parsecs from the Sun.

What galaxy is the Pi1 Gruis star in?

The Pi1 Gruis is in the Milky Way galaxy just like the Sun.

How many stars are in the Pi1 Gruis system?

The Pi1 Gruis system contains 2 stars.

What type of star is the Pi1 Gruis?

The primary in the Pi1 Gruis system is a Red giant star.

What temperature is star Pi1 Gruis?

The primary in the Pi1 Gruis system has a temperature of 3100 K. Find out more about the temperature of stars in Stellar guide
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