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WISE 0855-0714
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Star WISE 0855-0714

Sub-brown dwarf WISE 0855-0714 is located 7 light years away from the Sun. It is a single star of spectral class Y2, that has 1 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
7 light years
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WISE 0855-0714

Sub-brown dwarf
Spectral class: Y2

Location +

Ascension iconRight ascension: 8h 55m 10.830s
Declination iconDeclination: -7° 14' 42.526'' (equatorial region)
Parallax iconParallax: 448.000
Distance iconSun distance: 7.280 ly | 2.2 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: 0.57 % M Sun
| 6 M Jupiter
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Star mass
Mass of the star WISE 0855-0714 is 0.005727 solar masses (or 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: 9.1 % R Sun
| 0.9 R Jupiter
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Star size
Radius of the star WISE 0855-0714 is 0.09078 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 icon
Temperature: 264 K | 0.05 T Sun
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Star temperature
Surface temperature of WISE 0855-0714 is 264 K, which is 5 % 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 iconAbsolute magnitude (V): 3.3
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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WISE 0855-0714 system structure

 WISE 0855-0714

More about WISE 0855-0714

Nearby brown dwarf WISE 0855-0714 is is is much smaller than the Sun and temperature on its surface is around 264 K (-9 °C), which is about 5 % of Sun's temperature.
       WISE 0855-0714 can be found in southern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
WISEA J085510.74-071442.5, WISE J085510.83-071442.5
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External sources
icon study
A Deep Search for Exomoons Around WISE 0855 With JWST
Scientific study, Accepted: 28. 10. 2025
icon study
icon study
icon study
icon study
simbad icon
Simbad database (WISEA J085510.74-071442.5)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)

Frequently Asked Questions

How far is the WISE 0855-0714 system from the Sun?

The WISE 0855-0714 system is 7 light years or 2.2 parsecs from the Sun.

What galaxy is the WISE 0855-0714 star in?

The WISE 0855-0714 is in the Milky Way galaxy just like the Sun.

How many stars are in the WISE 0855-0714 system?

The WISE 0855-0714 is a single star, there are no other known stars in the system.

What type of star is the WISE 0855-0714?

The star WISE 0855-0714 is a Sub-brown dwarf star.

What temperature is star WISE 0855-0714?

The star WISE 0855-0714 has an effective temperature of 264 K. Find out more about the temperature of stars in Stellar guide
Class of stars Sub-brown dwarf
Brown dwarfs are not really stars, because there is no thermonuclear fusion in their core. These objects are smaller and cooler than stars, but too massive to be considered planets. Brown dwarfs of spectral class Y are the coolest and only a few of them have been discovered so far.
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