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HD 10800 Aa
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Star HD 10800 Aa

Triple star system HD 10800 Aa is located 88 light years away from the Sun. It is a system with 3 stars. For now, there are no known exoplanets in this star system.
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Sun distance
88 light years
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HD 10800 Aa

Yellow star, Spectroscopic binary
Spectral class: G1V

Location +

Ascension iconRight ascension: 1h 37m 56.634s
Declination iconDeclination: -82° 58' 28.053'' (southern hemisphere)
Parallax iconParallax: 37.013
Distance iconSun distance: 88.120 ly | 27.0 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: 109 % M Sun
| 1142 M Jupiter
+
Star mass
Mass of the star HD 10800 Aa is 1.09 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: 110 % R Sun
| 10.9 R Jupiter
+
Star size
Radius of the star HD 10800 Aa is 1.1 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: 5802 K | 1 T Sun
+
Star temperature
Surface temperature of HD 10800 Aa is 5802 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
time icon
Age: 5.01 billions years | 1.09 Sun
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Star age
Star HD 10800 Aa is 5.01 billion years old, which is about 1.09 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: 1.82 L Sun
+
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): 5.9
Magnitude iconAbsolute magnitude (V): 3.7
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 10800 Ab

Orange star, , Spectroscopic binary

Basic characteristic

icon weight
Mass: 64 % M Sun
| 670 M Jupiter
+
Star mass
Mass of the star HD 10800 Ab is 1.09 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
temperature iconTemperature: 5900 K
 (estimate)
+
Star temperature
Surface temperature of HD 10800 Ab is estimated to be 5902 K, which is 102 % 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

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 10800 B

Yellow star, , , Spectroscopic binary
Spectral class: G2V

Basic characteristic

icon weight
Mass: 100 % M Sun
| 1048 M Jupiter
+
Star mass
Mass of the star HD 10800 B is 0.64 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: 110 % R Sun
| 10.8 R Jupiter
(estimate)
+
Star size
Radius of the star HD 10800 B is not known. Its estimated value based on other similar stars is about 110 % 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: 5741 K | 0.99 T Sun
+
Star temperature
Surface temperature of HD 10800 B is 5741 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: 4.79 billions years | 1.04 Sun
+
Star age
Star HD 10800 B is 4.79 billion years old, which is about 1.04 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: 0.98 L Sun
+
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 10800 Aa system structure

 HD 10800 Aa
HD 10800 Ab
HD 10800 B

More about HD 10800 Aa

       HD 10800 Aa can be found in southern celestial hemisphere, and it is possible to see it with naked eye.
Other designations of this star
3 G. Octantis, CPD−83°27, GC 2063, GJ 67.1, Gliese 67.1, HIP 7601, HR 512, SAO 258271, WDS J01379-8259AB, Gaia DR3 4618008180223988352
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Frequently Asked Questions

How far is the HD 10800 Aa system from the Sun?

The HD 10800 Aa system is 88 light years or 27.0 parsecs from the Sun.

What galaxy is the HD 10800 Aa star in?

The HD 10800 Aa is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 10800 Aa system?

The HD 10800 Aa system contains 3 stars.

What type of star is the HD 10800 Aa?

The primary in the HD 10800 Aa system is a Yellow star star.

What temperature is star HD 10800 Aa?

The primary in the HD 10800 Aa system has a temperature of 5802 K. Find out more about the temperature of stars in Stellar guide
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