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Stellar Catalog
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Nearby stars catalogue
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HD 18757
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Star HD 18757

Triple star system HD 18757 is located 77 light years away from the Sun. It is a system with 3 stars. For now, there are no known exoplanets in this star system.
Sun distance
77 light years
galaxy map

HD 18757 A

Bright giant, High proper motion star
Spectral class: G1.5V

Location +

Ascension iconRight ascension: 3h 4m 11.264s
Declination iconDeclination: 61° 42' 9.893'' (northern hemisphere)
Parallax iconParallax: 42.459
Distance iconSun distance: 76.817 ly | 23.6 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: 102 % M Sun
| 1069 M Jupiter
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Star mass
Mass of the star HD 18757 A is 1.02 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: 105 % R Sun
| 10.4 R Jupiter
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Star size
Radius of the star HD 18757 A is 1.047 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: 5736 K | 0.99 T Sun
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Star temperature
Surface temperature of HD 18757 A is 5736 K, which is 99 % 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: 11.4 billions years | 2.48 Sun
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Star age
Star HD 18757 A is 11.4 billion years old, which is about 2.48 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

Photometry

Magnitude iconApparent magnitude (V): 6.6
Magnitude iconAbsolute magnitude (V): 4.8
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 18757 Ab

Brown dwarf, , High proper motion star

Location +

Distance iconDistance from the primary: 22 AU

Basic characteristic

icon weight
Mass: 3.4 % M Sun
| 36 M Jupiter
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Star mass
Mass of the star HD 18757 Ab is 1.02 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

HD 18757 B

Red dwarf, High proper motion star
Spectral class: M2.5V

Basic characteristic

icon weight
Mass: 40 % M Sun
| 429.5 M Jupiter
 (estimate)
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Star mass
The mass of the star HD 18757 B is unknown. Based on its other characteristics, it is estimated to be about 40 % 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: 40 % R Sun
| 4.2 R Jupiter
(estimate)
+
Star size
Radius of the star HD 18757 B is not known. Its estimated value based on other similar stars is about 40 % 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

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

HD 18757 system structure

 HD 18757 A
HD 18757 Ab 22 AU
HD 18757 B
More about HD 18757
       HD 18757 can be found in northern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
HD 18757 D, KUI 11, G 246-22, Gaia EDR3 466294295706341760
External sources
simbad icon
Simbad database (G 246-22)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 466291787445425408)
Archive from the Gaia mission
Closest stars

 G 246-35
 - 5 ly

G 246-36
 - 5 ly

BD+60 637
 - 5.4 ly

G 246-26
 - 5.5 ly

LP 53-55
 - 5.8 ly
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