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PZ Telescopii
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Star PZ Telescopii

Binary star PZ Telescopii is located 154 light years away from the Sun. It consists of a subgiant and a brown dwarf. 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 A

Subgiant
Spectral class: G9IV

Location +

Ascension iconRight ascension: 18h 53m 5.902s
Declination iconDeclination: -50° 10' 51.266'' (southern hemisphere)
Parallax iconParallax: 21.162
Distance iconSun distance: 154.122 ly | 47.3 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: 113 % M Sun
| 1184 M Jupiter
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Star mass
Mass of the star PZ Telescopii A is 1.13 solar 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: 123 % R Sun
| 12.2 R Jupiter
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Star size
Radius of the star PZ Telescopii A is 1.23 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: 5338 K | 0.92 T Sun
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Star temperature
Surface temperature of PZ Telescopii A is 5338 K, which is 92 % 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: 0.024 billions years | 0.01 Sun
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Star age
Star PZ Telescopii A is 0.024 billion years old, which is about 0.01 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
luminosity icon
Luminosity: 0.993 L Sun
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Star luminosity
Luminosity is the total amount of energy a star gives off every second. Think of it as the star’s true brightness — not just how bright it looks from Earth. This is important because some stars may appear dim simply because they are far away, not because they’re actually faint... icon More about Star luminosity 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

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
+
Star mass
Mass of the star PZ Telescopii B is 1.13 solar 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)
+
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
+
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 system structure

 PZ Telescopii A
PZ Telescopii B 27 AU

More about PZ Telescopii

       PZ Telescopii can be found in southern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope.
Other designations of this star
PZ Tel, CD−50°12190, HD 174429, HIP 92680, SAO 245781, PPM 347231, WDS J18531-5011AB
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External sources
icon study
Dynamical Mass of the Young Brown Dwarf Companion PZ Tel B
Scientific study, Accepted: 03. 04. 2023

Frequently Asked Questions

How far is the PZ Telescopii system from the Sun?

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

What galaxy is the PZ Telescopii star in?

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

How many stars are in the PZ Telescopii system?

The PZ Telescopii system contains 2 stars.

What type of star is the PZ Telescopii?

The primary in the PZ Telescopii system is a Subgiant star.

What temperature is star PZ Telescopii?

The primary in the PZ Telescopii system has a temperature of 5338 K. Find out more about the temperature of stars in Stellar guide
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