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Rho Capricorni
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Star Rho Capricorni

Binary star Rho Capricorni is located 98 light years away from the Sun. It consists of a and a subgiant. For now, there are no known exoplanets in this star system.
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Sun distance
98 light years
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Rho Capricorni A

Subgiant
Spectral class: F2 IV

Location +

Ascension iconRight ascension: 20h 28m 51.622s
Declination iconDeclination: -17° 48' 49.271'' (equatorial region)
Parallax iconParallax: 33.310
Distance iconSun distance: 97.915 ly | 30.0 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: 152 % M Sun
| 1592 M Jupiter
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Star mass
Mass of the star Rho Capricorni A is 1.52 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: 130 % R Sun
| 12.9 R Jupiter
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Star size
Radius of the star Rho Capricorni A is 1.3 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: 6911 K | 1.2 T Sun
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Star temperature
Surface temperature of Rho Capricorni A is 6911 K, which is 120 % 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: 1.74 billions years | 0.38 Sun
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Star age
Star Rho Capricorni A is 1.74 billion years old, which is about 0.38 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: 9 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): 4.9
Magnitude iconAbsolute magnitude (V): 2.5
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

Rho Capricorni B

Unknown star type, Unknown star type

Basic characteristic

temperature iconTemperature: 6800 K
 (estimate)
+
Star temperature
Surface temperature of Rho Capricorni B is estimated to be 6787 K, which is 118 % 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): 6.9
Magnitude iconAbsolute magnitude (V): 4.5
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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Rho Capricorni system structure

 Rho Capricorni A
Rho Capricorni B

More about Rho Capricorni

       Rho Capricorni 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
* rho Cap, ρ Cap, 11 Cap, BD−18°5689, GJ 791.1, GJ 9696, HD 194943, HIP 101027, HR 7822, SAO 163614, ADS 13887, WDS J20289-1749AB
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External sources
simbad icon
Simbad database (* rho Cap B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)

Frequently Asked Questions

How far is the Rho Capricorni system from the Sun?

The Rho Capricorni system is 98 light years or 30.0 parsecs from the Sun.

What galaxy is the Rho Capricorni star in?

The Rho Capricorni is in the Milky Way galaxy just like the Sun.

How many stars are in the Rho Capricorni system?

The Rho Capricorni system contains 2 stars.

What type of star is the Rho Capricorni?

The primary in the Rho Capricorni system is a Subgiant star.

What temperature is star Rho Capricorni?

The primary in the Rho Capricorni system has a temperature of 6911 K. Find out more about the temperature of stars in Stellar guide
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SCR J2007-1915
 - 9 ly
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