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HD 210058
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Star HD 210058

HD 210058, also known as TOI-1355, is a fast-rotating A-type star about 805 light-years from the Sun. It has 2.34 times the Sun’s mass, a radius about 1.853 times the Sun’s, and a temperature of 9,218 kelvins. BD+37 4838 is also a fast-rotating A-type star; it is a hybrid pulsator, showing both Gamma Doradus and Delta Scuti types of stellar pulsation.
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Sun distance
805 light years
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HD 210058

White-Blue star
Spectral class: A2

Location +

Ascension iconRight ascension: 22h 5m 13.790s
Declination iconDeclination: 66° 46' 30.900'' (northern hemisphere)
Parallax iconParallax: 4.051
Distance iconSun distance: 805.125 ly | 246.9 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: 234 % M Sun
| 2451 M Jupiter
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Star mass
Mass of the star HD 210058 is 2.34 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: 185 % R Sun
| 18.4 R Jupiter
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Star size
Radius of the star HD 210058 is 1.853 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: 9218 K | 1.6 T Sun
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Star temperature
Surface temperature of HD 210058 is 9218 K, which is 160 % 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
luminosity icon
Luminosity: 22.34 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

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 210058 system structure

 HD 210058
HD 210058 b 0.04 AU 3163.2 M⊕ 16 R⊕ 2.2 days

More about HD 210058

Star HD 210058 is is approximately 85 % bigger than the Sun and temperature on its surface is around 9218 K (8945 °C), which is about 160 % of Sun's temperature.
       HD 210058 can be found in northern celestial hemisphere.
Other designations of this star
TOI-1355
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External sources
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Frequently Asked Questions

How far is the HD 210058 system from the Sun?

The HD 210058 system is 805 light years or 246.9 parsecs from the Sun.

What galaxy is the HD 210058 star in?

The HD 210058 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 210058 system?

The HD 210058 is a single star, there are no other known stars in the system.

What type of star is the HD 210058?

The star HD 210058 is a White-Blue star star.

What temperature is star HD 210058?

The star HD 210058 has an effective temperature of 9218 K. Find out more about the temperature of stars in Stellar guide

stellar brief logoStellar Brief

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3. 11. 2026
stellar brief logo
An Earth-sized planet circles its red dwarf host every 7.05 hours, while another candidate may orbit in a habitable zone. The latest findings also track a giant planet’s slowly shifting orbit, use the colors of HD 100546’s disk to probe its dust, and reveal how computer models interpret exoplanet atmospheres.
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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.
Estimated values
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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