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HD 172555
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Star HD 172555

White-Blue star HD 172555 is located 94 light years away from the Sun. It is a single star of spectral class A7V C, that has 176 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
94 light years
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HD 172555

White-Blue star, High proper motion star
Spectral class: A7V C

Location +

Ascension iconRight ascension: 18h 45m 26.986s
Declination iconDeclination: -64° 52' 18.930'' (southern hemisphere)
Parallax iconParallax: 34.735
Distance iconSun distance: 93.897 ly | 28.8 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: 176 % M Sun
| 1844 M Jupiter
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Star mass
Mass of the star HD 172555 is 1.76 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: 190 % R Sun
| 18.6 R Jupiter
(estimate)
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Star size
Radius of the star HD 172555 is not known. Its estimated value based on other similar stars is about 190 % 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: 7846 K | 1.36 T Sun
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Star temperature
Surface temperature of HD 172555 is 7846 K, which is 136 % 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: 0.023 billions years | 0.01 Sun
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Star age
Star HD 172555 is 0.023 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: 9.5 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 iconApparent magnitude (V): 4.8
Magnitude iconAbsolute magnitude (V): 2.5
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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HD 172555 system structure

 HD 172555
HD 172555 disk n/a -

More about HD 172555

Nearby star HD 172555 is a main sequence star that fuses hydrogen atoms into helium. It is is approximately 87 % bigger than the Sun and temperature on its surface is around 7846 K (7573 °C), which is about 136 % of Sun's temperature.
       HD 172555 can be found in southern celestial hemisphere, and it is possible to see it with naked eye.
Other designations of this star
CPD−64° 3948, FK5 3489, GC 25604, HIC 92024, HIP 92024, SAO 254358, HR 7012, 2MASS J18452691-6452165, TIC 464405850, TYC 9077-2487-1, Gaia DR3 6438274350302427776
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External sources
icon study
icon study
icon study
Observing planetary gaps in the gas of debris disks
Scientific study, Accepted: 21. 11. 2024
simbad icon
Simbad database (HD 172555)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 6438274350302427776)
Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 172555 system from the Sun?

The HD 172555 system is 94 light years or 28.8 parsecs from the Sun.

What galaxy is the HD 172555 star in?

The HD 172555 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 172555 system?

The HD 172555 is a single star, there are no other known stars in the system.

What type of star is the HD 172555?

The star HD 172555 is a White-Blue star star.

What temperature is star HD 172555?

The star HD 172555 has an effective temperature of 7846 K. Find out more about the temperature of stars in Stellar guide
Closest stars

 CD-64 1208
 - 1.1 ly

WT 581
 - 4.8 ly

SCR J1844-6225
 - 5 ly

SCR J1851-6156
 - 5.4 ly

2MASS J18315290-6435471
 - 7 ly
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icon Data in Stellar Catalog come from trusted scientific sources. Primary source is Gaia space telescope mapping the stars in Milky Way. Other sources include research papers, Simbad catalog and Exoplanet.eu database.
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icon Objects listed in the Stellar Catalog often have values that are estimates. These estimates are determined using their known characteristics, such as spectral type, brightness across different wavelengths, distance from a star, and other factors.
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Stellar Catalog brings the stars from our galaxy to you. Discover their position, physical properties and whether there are any exoplanets or disks orbiting them. The data in Stellar Catalog come from respectable sources like Gaia space telescope, or SIMBAD database.
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