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BD-21 4352
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Star BD-21 4352

Red dwarf BD-21 4352 is located 61 light years away from the Sun. It is a single star of spectral class M0V, that has typically about 25 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
61 light years
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BD-21 4352

Red dwarf, High proper motion star
Spectral class: M0V

Location +

Ascension iconRight ascension: 16h 25m 12.352s
Declination iconDeclination: -21° 56' 19.907'' (southern hemisphere)
Parallax iconParallax: 53.739
Distance iconSun distance: 60.693 ly | 18.6 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: 60 % M Sun
| 607.6 M Jupiter
 (estimate)
+
Star mass
The mass of the star BD-21 4352 is unknown. Based on its other characteristics, it is estimated to be about 60 % 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: 60 % R Sun
| 5.8 R Jupiter
(estimate)
+
Star size
Radius of the star BD-21 4352 is not known. Its estimated value based on other similar stars is about 60 % 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: 3900 K
 (estimate)
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Star temperature
Surface temperature of BD-21 4352 is estimated to be 3909 K, which is 67 % 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): 10.4
Magnitude iconAbsolute magnitude (V): 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
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BD-21 4352 system structure

 BD-21 4352

More about BD-21 4352

Nearby star BD-21 4352 is a main sequence star that fuses hydrogen atoms into helium. 
       BD-21 4352 can be found in southern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
Gaia DR3 6051948158061617024
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External sources
simbad icon
Simbad database (BD-21 4352)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 6051948158061617024)
Archive from the Gaia mission

Frequently Asked Questions

How far is the BD-21 4352 system from the Sun?

The BD-21 4352 system is 61 light years or 18.6 parsecs from the Sun.

What galaxy is the BD-21 4352 star in?

The BD-21 4352 is in the Milky Way galaxy just like the Sun.

How many stars are in the BD-21 4352 system?

The BD-21 4352 is a single star, there are no other known stars in the system.

What type of star is the BD-21 4352?

The star BD-21 4352 is a Red dwarf star.

What temperature is the BD-21 4352?

The primary in the BD-21 4352 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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