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Ross 193
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Star Ross 193

Binary star Ross 193 is located 53 light years away from the Sun. It consists of a red dwarf and a white dwarf. For now, there are no known exoplanets in this star system.
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Sun distance
53 light years
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Ross 193 A

Red dwarf, flare star
Spectral class: M3Vnne

Location +

Ascension iconRight ascension: 20h 56m 49.399s
Declination iconDeclination: -4° 50' 52.630'' (equatorial region)
Parallax iconParallax: 61.824
Distance iconSun distance: 52.755 ly | 16.2 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: 40 % M Sun
| 366.6 M Jupiter
 (estimate)
+
Star mass
The mass of the star Ross 193 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 193 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 193 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

Magnitude iconApparent magnitude (V): 11.9
Magnitude iconAbsolute magnitude (V): 10.9
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 193 B

White dwarf
Spectral class: DC10

Photometry

Magnitude iconApparent magnitude (V): 16.7
Magnitude iconAbsolute magnitude (V): 15.6
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 193 system structure

 Ross 193 A
Ross 193 B

More about Ross 193

       Ross 193 can be found in southern 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 EDR3 6913810483612308480
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External sources
simbad icon
Simbad database (Ross 193B)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 6913810483611035776)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Ross 193 system from the Sun?

The Ross 193 system is 53 light years or 16.2 parsecs from the Sun.

What galaxy is the Ross 193 star in?

The Ross 193 is in the Milky Way galaxy just like the Sun.

How many stars are in the Ross 193 system?

The Ross 193 system contains 2 stars.

What type of star is the Ross 193?

The primary in the Ross 193 system is a Red dwarf star.

What temperature is the Ross 193?

The primary in the Ross 193 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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