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7 Canis Majoris
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Star 7 Canis Majoris

Red giant 7 Canis Majoris is located 67 light years away from the Sun. It is a single star of spectral class K1.5III-IVFe1 B, that has 130 % of solar mass. There are multiple known exoplanets in this system.
Sun distance
67 light years
galaxy map

7 Canis Majoris

Red giant, High proper motion star
Spectral class: K1.5III-IVFe1 B

Location +

Ascension iconRight ascension: 6h 36m 41.115s
Declination iconDeclination: -19° 15' 22.287'' (equatorial region)
Parallax iconParallax: 48.849
Distance iconSun distance: 66.768 ly | 20.5 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: 130 % M Sun
| 5 M Jupiter
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Star mass
Mass of the star 7 Canis Majoris is 1.3 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: 490 % R Sun
| 48.8 R Jupiter
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Star size
Radius of the star 7 Canis Majoris is 4.9 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: 4785 K | 0.83 T Sun
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Star temperature
Surface temperature of 7 Canis Majoris is 4785 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: 4.6 billions years | 1 Sun
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Star age
Star 7 Canis Majoris is 4.6 billion years old, which is about 1 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
luminosity icon
Luminosity: 11.3 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

Magnitude iconApparent magnitude (V): 3.9
Magnitude iconAbsolute magnitude (V): 2.4
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

7 Canis Majoris system structure

 7 Canis Majoris
7 Canis Majoris b 1.76 AU 602.4 M⊕ 736.9 days
7 Canis Majoris c 2.15 AU 276.6 M⊕ 996 days
More about 7 Canis Majoris
Nearby star 7 Canis Majoris is is approximately 5 times bigger than the Sun and temperature on its surface is around 4785 K (4512 °C), which is about 83 % of Sun's temperature.
       7 Canis Majoris 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
Nu2 Canis Majoris, ν2 CMa, 7 CMa, BD−19°1502, FK5 2510, GC 8624, Gliese 239.1, GJ 239.1, HD 47205, HIP 31592, HIC 31592, HR 2429, SAO 151702, GJ 9214, Gliese 9214, IRAS 06345-1912, 2MASS J06364103-1915210, TD1 7611, TIC 48237215, TYC 5956-2621-1, YZ 109 2354, Gaia EDR3 2939555954755196160
External sources
simbad icon
Simbad database (* nu.02 CMa)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 2939555954755196160)
Archive from the Gaia mission
Closest stars

 UPM J0644-1631
 - 4 ly

2MASS J06402517-2352194
 - 5.6 ly

SCR J0650-2135
 - 6 ly

BRG 23
 - 6.8 ly

DENIS J0630-1840
 0.05 M☉ 7.8 ly
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