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SW CMa
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Star SW CMa

Binary star SW CMa is located 1890 light years away from the Sun. It consists of 2 subgiant stars. For now, there are no known exoplanets in this star system.
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Sun distance
1890 light years
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SW CMa

Subgiant
Spectral class: A3IV

Location +

Ascension iconRight ascension: 7h 8m 15.240s
Declination iconDeclination: -22° 26' 25.248'' (southern hemisphere)
Parallax iconParallax: 1.726
Distance iconSun distance: 1,890.355 ly | 579.6 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: 223.9 % M Sun
| 2346 M Jupiter
+
Star mass
Mass of the star SW CMa is 2.239 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: 301 % R Sun
| 30 R Jupiter
+
Star size
Radius of the star SW CMa is 3.014 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: 8300 K
 (estimate)
+
Star temperature
Surface temperature of SW CMa is estimated to be 8306 K, which is 144 % 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): 9.2
Magnitude iconAbsolute magnitude (V): 0.3
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

SW CMa B

Subgiant

Basic characteristic

icon weight
Mass: 210.4 % M Sun
| 2204 M Jupiter
+
Star mass
Mass of the star SW CMa B is 2.239 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: 250 % R Sun
| 24.8 R Jupiter
+
Star size
Radius of the star SW CMa B is 2.495 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: 8300 K
 (estimate)
+
Star temperature
Surface temperature of SW CMa B is estimated to be 8306 K, which is 144 % 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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SW CMa system structure

 SW CMa
SW CMa B

More about SW CMa

       SW CMa 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
TIC 81741369, 2MASS J07081523-2226254, GSC 05976-00630, HD 54520, TYC 5976-630-1, SW CMa, Gaia DR3 2927876770452174848, SAO 173039, AN 47.1931, SBC7 297, WEB 6899, BD-22 1712, HIC 34431, SBC9 436, YZ 112 4490, CD-22 4061, HIP 34431, CPD-22 1791
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External sources
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Frequently Asked Questions

How far is the SW CMa system from the Sun?

The SW CMa system is 1890 light years or 579.6 parsecs from the Sun.

What galaxy is the SW CMa star in?

The SW CMa is in the Milky Way galaxy just like the Sun.

How many stars are in the SW CMa system?

The SW CMa system contains 2 stars.

What type of star is the SW CMa?

The primary in the SW CMa system is a Subgiant star.

What temperature is the SW CMa?

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