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HD 128429 Aa
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Star HD 128429 Aa

Binary star HD 128429 Aa is located 91 light years away from the Sun. It consists of a yellow-white star and a red dwarf. For now, there are no known exoplanets in this star system.
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Sun distance
91 light years
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HD 128429 Aa

Yellow-White star, High proper motion star
Spectral class: F6V

Location +

Ascension iconRight ascension: 14h 36m 58.828s
Declination iconDeclination: -12° 18' 13.417'' (equatorial region)
Parallax iconParallax: 36.019
Distance iconSun distance: 90.551 ly | 27.8 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: 132 % M Sun
| 1383 M Jupiter
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Star mass
Mass of the star HD 128429 Aa is 1.32 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: 139 % R Sun
| 13.8 R Jupiter
+
Star size
Radius of the star HD 128429 Aa is 1.39 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: 6341 K | 1.1 T Sun
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Star temperature
Surface temperature of HD 128429 Aa is 6341 K, which is 110 % 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: 2.75 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

Magnitude iconApparent magnitude (V): 6.2
Magnitude iconAbsolute magnitude (V): 4
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 128429 Ab

Red dwarf, , High proper motion star

Basic characteristic

icon weight
Mass: 49 % M Sun
| 513 M Jupiter
+
Star mass
Mass of the star HD 128429 Ab is 1.32 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: 6300 K
 (estimate)
+
Star temperature
Surface temperature of HD 128429 Ab is estimated to be 6339 K, which is 109 % 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 128429 Aa system structure

 HD 128429 Aa
HD 128429 Ab

More about HD 128429 Aa

       HD 128429 Aa 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.
Other designations of this star
BD−11°3770, FK5 1381, HD 128429, HIP 71469, HR 5455, SAO 158677, LAL 26630, LHS 2953, Gaia DR3 6323603052822806784
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Frequently Asked Questions

How far is the HD 128429 Aa system from the Sun?

The HD 128429 Aa system is 91 light years or 27.8 parsecs from the Sun.

What galaxy is the HD 128429 Aa star in?

The HD 128429 Aa is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 128429 Aa system?

The HD 128429 Aa system contains 2 stars.

What type of star is the HD 128429 Aa?

The primary in the HD 128429 Aa system is a Yellow-White star star.

What temperature is star HD 128429 Aa?

The primary in the HD 128429 Aa system has a temperature of 6341 K. Find out more about the temperature of stars in Stellar guide
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