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2MASS J0024-0158
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Star 2MASS J0024-0158

Red dwarf 2MASS J0024-0158 is located 41 light years away from the Sun. It is a single star of spectral class M9.5, that has 8 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
41 light years

2MASS J0024-0158

Red dwarf, BY Draconis variable
Spectral class: M9.5

Location +

Ascension iconRight ascension: 0h 24m 24.556s
Declination iconDeclination: -1° 58' 17.711'' (equatorial region)
Parallax iconParallax: 80.344
Distance iconSun distance: 40.595 ly | 12.4 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: 7.5 % M Sun
| 79 M Jupiter
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Star mass
Mass of the star 2MASS J0024-0158 is 0.075 solar masses (or 78.6 Jupiter 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: 10.9 % R Sun
| 1.1 R Jupiter
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Star size
Radius of the star 2MASS J0024-0158 is 0.109 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

Photometry

Magnitude iconApparent magnitude (V): 19.4
Magnitude iconAbsolute magnitude (V): 19
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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2MASS J0024-0158 system structure

2MASS J0024-0158

More about 2MASS J0024-0158

      a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface. 2MASS J0024-0158 can be found in southern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope. 
2MASS J0024-0158 is a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface.
Other designations of this star
2MASS J00242463-0158201, V* DY Psc, BRI B0021-02, NLTT 1261, TIC 244167275, WISEA J002424.57-015818.4, Gaia EDR3 2541756977144595712
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External sources
simbad icon
Simbad database (V* DY Psc)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 2541756977144595712)
Archive from the Gaia mission

Frequently Asked Questions

How far is the 2MASS J0024-0158 system from the Sun?

The 2MASS J0024-0158 system is 41 light years or 12.4 parsecs from the Sun.

What galaxy is the 2MASS J0024-0158 star in?

The 2MASS J0024-0158 is in the Milky Way galaxy just like the Sun.

How many stars are in the 2MASS J0024-0158 system?

The 2MASS J0024-0158 is a single star, there are no other known stars in the system.

What type of star is the 2MASS J0024-0158?

The star 2MASS J0024-0158 is a Red dwarf star.

What temperature is the 2MASS J0024-0158?

The primary in the 2MASS J0024-0158 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
Class of stars Red dwarf
Red dwarfs are small, cool stars with surface temperatures of about 2,000–3,800 K, much cooler than the Sun. They usually have 8–50% of the Sun’s mass and shine very faintly, sometimes at just a tiny fraction of the Sun’s brightness. Classified mainly as spectral type M, they are the most common stars in the Milky Way, making up roughly 70–75% of its stellar population.

They fuse hydrogen slowly through the proton–proton chain and are fully convective, which allows them to use their fuel very efficiently. As a result, red dwarfs can live for tens of billions to trillions of years—far longer than the Sun. Many exoplanets orbit red dwarfs, including some in close habitable zones, though strong stellar activity can affect planetary environments.
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