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HD 221420
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Star HD 221420

Subgiant HD 221420 is located 102 light years away from the Sun. It is a single star of spectral class G2IV-V, that has 167 % of solar mass. There is at least one exoplanet in this system.
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Sun distance
102 light years
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HD 221420

Subgiant
Spectral class: G2IV-V

Location +

Ascension iconRight ascension: 23h 33m 19.662s
Declination iconDeclination: -77° 23' 7.183'' (southern hemisphere)
Parallax iconParallax: 32.102
Distance iconSun distance: 101.599 ly | 31.2 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: 167 % M Sun
| 1749 M Jupiter
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Star mass
Mass of the star HD 221420 is 1.67 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: 220 % R Sun
| 21.5 R Jupiter
(estimate)
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Star size
Radius of the star HD 221420 is not known. Its estimated value based on other similar stars is about 220 % 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: 5830 K | 1.01 T Sun
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Star temperature
Surface temperature of HD 221420 is 5830 K, which is 101 % 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): 5.8
Magnitude iconAbsolute magnitude (V): 3.3
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
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HD 221420 system structure

 HD 221420
HD 221420 b 10.15 AU 7280.1 M⊕ 10088 days

More about HD 221420

Star HD 221420 is is approximately 2 times bigger than the Sun and temperature on its surface is around 5830 K (5557 °C), which is about 101 % of Sun's temperature.
       HD 221420 can be found in southern celestial hemisphere, and it is possible to see it with naked eye.
Other designations of this star
Gaia DR3 6353376831270492800
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External sources
simbad icon
Simbad database (HD 221420)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 6353376831270492800)
Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 221420 system from the Sun?

The HD 221420 system is 102 light years or 31.2 parsecs from the Sun.

What galaxy is the HD 221420 star in?

The HD 221420 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 221420 system?

The HD 221420 is a single star, there are no other known stars in the system.

What type of star is the HD 221420?

The star HD 221420 is a Subgiant star.

What temperature is star HD 221420?

The star HD 221420 has an effective temperature of 5830 K. Find out more about the temperature of stars in Stellar guide
Class of stars Subgiant
A subgiant is a term used to describe a luminous star that is typically running out of hydrogen for nuclear fusion and is thus departing from the main sequence. These stars are classified as Yerkes luminosity class IV.
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icon Data in Stellar Catalog come from trusted scientific sources. Primary source is Gaia space telescope mapping the stars in Milky Way. Other sources include research papers, Simbad catalog and Exoplanet.eu database.
Estimated values
icon Objects listed in the Stellar Catalog often have values that are estimates. These estimates are determined using their known characteristics, such as spectral type, brightness across different wavelengths, distance from a star, and other factors.
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Stellar Catalog brings the stars from our galaxy to you. Discover their position, physical properties and whether there are any exoplanets or disks orbiting them. The data in Stellar Catalog come from respectable sources like Gaia space telescope, or SIMBAD database.
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