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HD 18455
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Star HD 18455

Binary star HD 18455 is located 73 light years away from the Sun. It consists of a orange star and a yellow star. For now, there are no known exoplanets in this star system.
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Sun distance
73 light years
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HD 18455 A

Orange star
Spectral class: K2V

Location +

Ascension iconRight ascension: 2h 57m 14.714s
Declination iconDeclination: -24° 58' 10.253'' (southern hemisphere)
Parallax iconParallax: 44.510
Distance iconSun distance: 73.277 ly | 22.5 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: 80 % M Sun
| 859 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 18455 A is unknown. Based on its other characteristics, it is estimated to be about 80 % of the Sun's mass.

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: 80 % R Sun
| 7.9 R Jupiter
(estimate)
+
Star size
Radius of the star HD 18455 A is not known. Its estimated value based on other similar stars is about 80 % 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 iconTemperature: 5000 K
 (estimate)
+
Star temperature
Surface temperature of HD 18455 A is estimated to be 4992 K, which is 87 % 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 iconApparent magnitude (V): 7.3
Magnitude iconAbsolute magnitude (V): 5.6
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

HD 18455 B

Yellow star
Spectral class: G5 D

Basic characteristic

icon weight
Mass: 100 % M Sun
| 1089.5 M Jupiter
 (estimate)
+
Star mass
The mass of the star HD 18455 B is unknown. Based on its other characteristics, it is estimated to be about 100 % of the Sun's mass.

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: 120 % R Sun
| 11.8 R Jupiter
(estimate)
+
Star size
Radius of the star HD 18455 B is not known. Its estimated value based on other similar stars is about 120 % 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 iconTemperature: 5800 K
 (estimate)
+
Star temperature
Surface temperature of HD 18455 B is estimated to be 5814 K, which is 100 % 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 iconApparent magnitude (V): 8.2
Magnitude iconAbsolute magnitude (V): 6.3
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 18455 system structure

 HD 18455 A
HD 18455 B

More about HD 18455

       HD 18455 can be found in southern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is also observable from Northern America, Europe and Asia.
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External sources
gaia icon
Gaia database (Gaia EDR3 5076269164798852864)
Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 18455 system from the Sun?

The HD 18455 system is 73 light years or 22.5 parsecs from the Sun.

What galaxy is the HD 18455 star in?

The HD 18455 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 18455 system?

The HD 18455 system contains 2 stars.

What type of star is the HD 18455?

The primary in the HD 18455 system is a Orange star star.

What temperature is the HD 18455?

The primary in the HD 18455 system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
Possible companions

 HD 18445
 - 0 ly
Closest stars

 LEHPM 2873
 - 2.8 ly

CD-23 1056
 - 5.2 ly

2MASS J02540582-1934523
 - 7.7 ly

LP 831-35
 - 8 ly

Tau3 Eridani
 1.8 M☉ 9.1 ly
3D map of stellar neighborhood
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exoplanet iconAbout Stellar Catalog

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Working with real data
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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