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18 Puppis
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Star 18 Puppis

Triple star system 18 Puppis is located 74 light years away from the Sun. It is a system with 3 stars. For now, there are no known exoplanets in this star system.
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Sun distance
74 light years
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18 Puppis A

Yellow-White star, High proper motion star
Spectral class: F6.5V

Location +

Ascension iconRight ascension: 8h 10m 39.556s
Declination iconDeclination: -13° 47' 56.211'' (equatorial region)
Parallax iconParallax: 44.340
Distance iconSun distance: 73.559 ly | 22.6 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: 120 % M Sun
| 1257.1 M Jupiter
 (estimate)
+
Star mass
The mass of the star 18 Puppis A is unknown. Based on its other characteristics, it is estimated to be about 120 % 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
| 12.3 R Jupiter
(estimate)
+
Star size
Radius of the star 18 Puppis 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: 6300 K
 (estimate)
+
Star temperature
Surface temperature of 18 Puppis A is estimated to be 6275 K, which is 109 % 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): 5.5
Magnitude iconAbsolute magnitude (V): 3.8
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

18 Puppis B

Red dwarf
Spectral class: M2.5V

Basic characteristic

icon weight
Mass: 40 % M Sun
| 429.5 M Jupiter
 (estimate)
+
Star mass
The mass of the star 18 Puppis B is unknown. Based on its other characteristics, it is estimated to be about 40 % 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: 40 % R Sun
| 4.3 R Jupiter
(estimate)
+
Star size
Radius of the star 18 Puppis B is not known. Its estimated value based on other similar stars is about 40 % 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: 3500 K
 (estimate)
+
Star temperature
Surface temperature of 18 Puppis B is estimated to be 3542 K, which is 61 % 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): 11.8
Magnitude iconAbsolute magnitude (V): 10
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

18 Puppis C

Red dwarf

Basic characteristic

icon weight
Mass: 30 % M Sun
| 272.4 M Jupiter
 (estimate)
+
Star mass
The mass of the star 18 Puppis C 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
| 2.9 R Jupiter
(estimate)
+
Star size
Radius of the star 18 Puppis C 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 18 Puppis C is estimated to be 3300 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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18 Puppis system structure

 18 Puppis A
18 Puppis B
18 Puppis C

More about 18 Puppis

       18 Puppis 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
GJ 9255, Gliese 9255, HD 68146, HIP 40035, HR 3202, TIC 422142487, TYC 5438-2380-1, , Gaia EDR3 5725122999630404096
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External sources
gaia icon
Gaia database (Gaia EDR3 5725122965265271680)
Archive from the Gaia mission

Frequently Asked Questions

How far is the 18 Puppis system from the Sun?

The 18 Puppis system is 74 light years or 22.6 parsecs from the Sun.

What galaxy is the 18 Puppis star in?

The 18 Puppis is in the Milky Way galaxy just like the Sun.

How many stars are in the 18 Puppis system?

The 18 Puppis system contains 3 stars.

What type of star is the 18 Puppis?

The primary in the 18 Puppis system is a Yellow-White star star.

What temperature is the 18 Puppis?

The primary in the 18 Puppis system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
Closest stars

 BD-13 2439
 - 3.9 ly

JNN 61
 - 5.3 ly

Gaia DR2 5723469746454887936
 - 6.5 ly

2MASS J07531346-1012174
 - 7.3 ly

LP 664-22
 - 7.3 ly
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