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HD 228777 Aa
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Star HD 228777 Aa

Multiple star system HD 228777 Aa is located 3652 light years away from the Sun. It is a system with 4 stars. For now, there are no known exoplanets in this star system.
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Sun distance
3652 light years
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HD 228777 Aa

Blue-white star
Spectral class: B9

Location +

Ascension iconRight ascension: 20h 17m 40.309s
Declination iconDeclination: 39° 14' 35.020'' (northern hemisphere)
Parallax iconParallax: 0.893
Distance iconSun distance: 3,651.565 ly | 1,119.6 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

temperature icon
Temperature: 10000 K | 1.73 T Sun
+
Star temperature
Surface temperature of HD 228777 Aa is 10000 K, which is 173 % 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): 9.6
Magnitude iconAbsolute magnitude (V): 9.6
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 228777 Ab

White-Blue star

Basic characteristic

temperature icon
Temperature: 7236 K | 1.25 T Sun
+
Star temperature
Surface temperature of HD 228777 Ab is 7236 K, which is 125 % 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 228777 Ba

Blue-white star

Basic characteristic

temperature icon
Temperature: 10000 K | 1.73 T Sun
+
Star temperature
Surface temperature of HD 228777 Ba is 10000 K, which is 173 % 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 228777 Bb

White-Blue star

Basic characteristic

temperature icon
Temperature: 9735 K | 1.68 T Sun
+
Star temperature
Surface temperature of HD 228777 Bb is 9735 K, which is 168 % 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
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HD 228777 Aa system structure

 HD 228777 Aa
HD 228777 Ab
HD 228777 Ba
HD 228777 Bb

More about HD 228777 Aa

       HD 228777 Aa 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
CzeV4315, TIC 12248375, Gaia DR3 2061378182331811328
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External sources
icon study
Three new 2+2 quadruple systems with changing inclination
Scientific study, Accepted: 24. 04. 2025

Frequently Asked Questions

How far is the HD 228777 Aa system from the Sun?

The HD 228777 Aa system is 3652 light years or 1,119.6 parsecs from the Sun.

What galaxy is the HD 228777 Aa star in?

The HD 228777 Aa is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 228777 Aa system?

The HD 228777 Aa system contains 4 stars.

What type of star is the HD 228777 Aa?

The primary in the HD 228777 Aa system is a Blue-white star star.

What temperature is star HD 228777 Aa?

The primary in the HD 228777 Aa system has a temperature of 10000 K. Find out more about the temperature of stars in Stellar guide
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