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Ross 200
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Star Ross 200

Binary star Ross 200 is located 96 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
96 light years
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Ross 200 A

Red dwarf, High proper motion star

Location +

Ascension iconRight ascension: 21h 40m 1.927s
Declination iconDeclination: 54° 8' 23.120'' (northern hemisphere)
Parallax iconParallax: 34.077
Distance iconSun distance: 95.711 ly | 29.3 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: 40 % M Sun
| 366.6 M Jupiter
 (estimate)
+
Star mass
The mass of the star Ross 200 A is unknown. Based on its other characteristics, it is estimated to be about 40 % 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: 40 % R Sun
| 4 R Jupiter
(estimate)
+
Star size
Radius of the star Ross 200 A is not known. Its estimated value based on other similar stars is about 40 % 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: 3400 K
 (estimate)
+
Star temperature
Surface temperature of Ross 200 A is estimated to be 3433 K, which is 59 % 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

Ross 200 B

Red dwarf, High proper motion star

Basic characteristic

icon weight
Mass: 20 % M Sun
| 199 M Jupiter
 (estimate)
+
Star mass
The mass of the star Ross 200 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
| 2.4 R Jupiter
(estimate)
+
Star size
Radius of the star Ross 200 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 Ross 200 B is estimated to be 3221 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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Ross 200 system structure

 Ross 200 A
Ross 200 B

More about Ross 200

       Ross 200 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 2174326712570073472
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External sources
simbad icon
Simbad database (Ross 200B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 2174326751236583168)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Ross 200 system from the Sun?

The Ross 200 system is 96 light years or 29.3 parsecs from the Sun.

What galaxy is the Ross 200 star in?

The Ross 200 is in the Milky Way galaxy just like the Sun.

How many stars are in the Ross 200 system?

The Ross 200 system contains 2 stars.

What type of star is the Ross 200?

The primary in the Ross 200 system is a Red dwarf star.

What temperature is the Ross 200?

The primary in the Ross 200 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
Closest stars

 Ross 200
 - 2.1 ly

G 231-44
 - 4.3 ly

G 232-42
 - 7.7 ly

G 232-63
 - 9.6 ly

LSPM J2114+5052
 - 10.5 ly
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