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Ross 370
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Star Ross 370

Binary star Ross 370 is located 44 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
44 light years
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Ross 370 A

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

Location +

Ascension iconRight ascension: 3h 16m 14.733s
Declination iconDeclination: 58° 9' 57.341'' (northern hemisphere)
Parallax iconParallax: 73.619
Distance iconSun distance: 44.303 ly | 13.6 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 Ross 370 A 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 Ross 370 A 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 Ross 370 A 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): 10.8
Magnitude iconAbsolute magnitude (V): 10.1
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 370 B

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

Basic characteristic

icon weight
Mass: 50 % M Sun
| 481.9 M Jupiter
 (estimate)
+
Star mass
The mass of the star Ross 370 B 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 Ross 370 B 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 Ross 370 B 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

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 370 system structure

 Ross 370 A
Ross 370 B

More about Ross 370

       Ross 370 can be found in northern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
Gaia EDR3 461701979229013376
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External sources
simbad icon
Simbad database (Ross 370B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 461701979233050624)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Ross 370 system from the Sun?

The Ross 370 system is 44 light years or 13.6 parsecs from the Sun.

What galaxy is the Ross 370 star in?

The Ross 370 is in the Milky Way galaxy just like the Sun.

How many stars are in the Ross 370 system?

The Ross 370 system contains 2 stars.

What type of star is the Ross 370?

The primary in the Ross 370 system is a Red dwarf star.

What temperature is the Ross 370?

The primary in the Ross 370 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
Closest stars

 Ross 567
 - 6.2 ly

Ross 28
 - 7.5 ly

Ross 15
 - 7.8 ly

G 247-15
 - 8.4 ly

Gliese 3126
 0.44 M☉ 9.4 ly
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