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PZ Telescopii B
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Star PZ Telescopii B

Brown dwarf PZ Telescopii B is located 154 light years away from the Sun. It is a single star of spectral class M7, that has 3 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
154 light years
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PZ Telescopii B

Brown dwarf
Spectral class: M7

Location +

Distance iconDistance from the primary: 27 AU

Basic characteristic

icon weight
Mass: 2.6 % M Sun
| 27 M Jupiter
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Star mass
Mass of the star PZ Telescopii B is 0.026 solar masses (or 27.2 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: 10 % R Sun
| 0.6 R Jupiter
(estimate)
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Star size
Radius of the star PZ Telescopii B is not known. Its estimated value based on other similar stars is about 10 % 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: 2987 K | 0.52 T Sun
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Star temperature
Surface temperature of PZ Telescopii B is 2987 K, which is 52 % 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): -3.4
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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PZ Telescopii B system structure

 PZ Telescopii A
PZ Telescopii B 27 AU

More about PZ Telescopii B

PZ Telescopii B is is is much smaller than the Sun and temperature on its surface is around 2987 K (2714 °C), which is about 52 % of Sun's temperature.
       PZ Telescopii B can be found in southern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
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External sources
icon study
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Scientific study, Accepted: 29. 12. 2026
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icon study
A Spatial Map of the Atmospheric Limb of a Hot Jupiter
Scientific study, Accepted: 14. 10. 2026
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Frequently Asked Questions

How far is the PZ Telescopii B system from the Sun?

The PZ Telescopii B system is 154 light years or 47.3 parsecs from the Sun.

What galaxy is the PZ Telescopii B star in?

The PZ Telescopii B is in the Milky Way galaxy just like the Sun.

How many stars are in the PZ Telescopii B system?

The PZ Telescopii B is a single star, there are no other known stars in the system.

What type of star is the PZ Telescopii B?

The star PZ Telescopii B is a Brown dwarf star.

What temperature is star PZ Telescopii B?

The star PZ Telescopii B has an effective temperature of 2987 K. Find out more about the temperature of stars in Stellar guide
Class of stars 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.
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