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PM J20220+2147
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Star PM J20220+2147

Binary star PM J20220+2147 is located 88 light years away from the Sun. It consists of 2 red dwarf stars. For now, there are no known exoplanets in this star system.
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Sun distance
88 light years
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PM J20220+2147

Red dwarf, High proper motion star
Spectral class: M2.0Ve

Location +

Ascension iconRight ascension: 20h 22m 1.623s
Declination iconDeclination: 21° 47' 19.735'' (northern hemisphere)
Parallax iconParallax: 37.091
Distance iconSun distance: 87.934 ly | 27.0 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: 50 % M Sun
| 481.9 M Jupiter
 (estimate)
+
Star mass
The mass of the star PM J20220+2147 is unknown. Based on its other characteristics, it is estimated to be about 50 % 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: 50 % R Sun
| 4.6 R Jupiter
(estimate)
+
Star size
Radius of the star PM J20220+2147 is not known. Its estimated value based on other similar stars is about 50 % 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: 3600 K
 (estimate)
+
Star temperature
Surface temperature of PM J20220+2147 is estimated to be 3622 K, which is 62 % 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): 11.9
Magnitude iconAbsolute magnitude (V): 9.7
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

PM J20220+2147 B

Red dwarf, High proper motion star

Basic characteristic

icon weight
Mass: 20 % M Sun
| 188.6 M Jupiter
 (estimate)
+
Star mass
The mass of the star PM J20220+2147 B is unknown. Based on its other characteristics, it is estimated to be about 20 % 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: 20 % R Sun
| 2.2 R Jupiter
(estimate)
+
Star size
Radius of the star PM J20220+2147 B is not known. Its estimated value based on other similar stars is about 20 % 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: 3200 K
 (estimate)
+
Star temperature
Surface temperature of PM J20220+2147 B is estimated to be 3207 K, which is 55 % 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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PM J20220+2147 system structure

 PM J20220+2147
PM J20220+2147 B

More about PM J20220+2147

       PM J20220+2147 can be found in northern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
Gaia DR3 1829237158474914688
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External sources
simbad icon
Simbad database (PM J20220+2147B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 1829237158466540160)
Archive from the Gaia mission

Frequently Asked Questions

How far is the PM J20220+2147 system from the Sun?

The PM J20220+2147 system is 88 light years or 27.0 parsecs from the Sun.

What galaxy is the PM J20220+2147 star in?

The PM J20220+2147 is in the Milky Way galaxy just like the Sun.

How many stars are in the PM J20220+2147 system?

The PM J20220+2147 system contains 2 stars.

What type of star is the PM J20220+2147?

The primary in the PM J20220+2147 system is a Red dwarf star.

What temperature is the PM J20220+2147?

The primary in the PM J20220+2147 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
Closest stars

 Gaia DR3 1831371585417965056
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HD 195034
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2MASS J20214085+1827538
 - 5.1 ly

UCAC4 550-125486
 - 5.5 ly

Gaia EDR3 1829934729897464960
 - 6.8 ly
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