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CWISE J1055+5443
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Star CWISE J1055+5443

Sub-brown dwarf CWISE J1055+5443 is located 22 light years away from the Sun. It is a single star of spectral class Y0 (pec), that has 1 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
22 light years
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CWISE J1055+5443

Sub-brown dwarf
Spectral class: Y0 (pec)

Location +

Ascension iconRight ascension: 10h 55m 12.110s
Declination iconDeclination: 54° 43' 28.300'' (northern hemisphere)
Parallax iconParallax: 148.253
Distance iconSun distance: 22.000 ly | 6.7 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: 0.5 % M Sun
| 5 M Jupiter
+
Star mass
Mass of the star CWISE J1055+5443 is 0.005 solar masses (or 5.2 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: 0 % R Sun
| 0.2 R Jupiter
(estimate)
+
Star size
Radius of the star CWISE J1055+5443 is not known. Its estimated value based on other similar stars is about 0 % 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: 500 K | 0.09 T Sun
+
Star temperature
Surface temperature of CWISE J1055+5443 is 500 K, which is 9 % 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
time icon
Age: 0.180 billions years | 0.04 Sun
+
Star age
Star CWISE J1055+5443 is 0.180 billion years old, which is about 0.04 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age 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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CWISE J1055+5443 system structure

 CWISE J1055+5443

More about CWISE J1055+5443

Nearby brown dwarf CWISE J1055+5443 is is is much smaller than the Sun and temperature on its surface is around 500 K (227 °C), which is about 9 % of Sun's temperature.
       CWISE J1055+5443 can be found in northern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
CWISE J105512.11+544328.3, WISEA J105512.93+544329.7
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External sources
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Frequently Asked Questions

How far is the CWISE J1055+5443 system from the Sun?

The CWISE J1055+5443 system is 22 light years or 6.7 parsecs from the Sun.

What galaxy is the CWISE J1055+5443 star in?

The CWISE J1055+5443 is in the Milky Way galaxy just like the Sun.

How many stars are in the CWISE J1055+5443 system?

The CWISE J1055+5443 is a single star, there are no other known stars in the system.

What type of star is the CWISE J1055+5443?

The star CWISE J1055+5443 is a Sub-brown dwarf star.

What temperature is star CWISE J1055+5443?

The star CWISE J1055+5443 has an effective temperature of 500 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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