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Kepler 643
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Star Kepler 643

Red giant Kepler 643 is located 3563 light years away from the Sun. It is a single star, that has 100 % of solar mass. There is at least one exoplanet in this system.
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Sun distance
3563 light years
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Kepler 643

Red giant

Location +

Ascension iconRight ascension: 19h 21m 18.541s
Declination iconDeclination: 42° 53' 53.618'' (northern hemisphere)
Parallax iconParallax: 0.915
Distance iconSun distance: 3,563.112 ly | 1,092.5 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: 100.4 % M Sun
| 1052 M Jupiter
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Star mass
Mass of the star Kepler 643 is 1.0039 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: 256 % R Sun
| 25.5 R Jupiter
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Star size
Radius of the star Kepler 643 is 2.5615 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: 4812 K | 0.83 T Sun
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Star temperature
Surface temperature of Kepler 643 is 4812 K, which is 83 % 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: 12.02 billions years | 2.61 Sun
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Star age
Star Kepler 643 is 12.02 billion years old, which is about 2.61 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: 0.5008 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

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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Kepler 643 system structure

 Kepler 643
Kepler 643 b n/a 10.2 R⊕ 16.3 days

More about Kepler 643

Star Kepler 643 is is approximately 3 times bigger than the Sun and temperature on its surface is around 4812 K (4539 °C), which is about 83 % of Sun's temperature.
       Kepler 643 can be found in northern celestial hemisphere, however it is too dim to be seen with the naked eye or even a small telescope.
Other designations of this star
2MASS J19211855+4253538, Gaia DR3 2102038912581334656
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External sources
icon study
gaia icon
Gaia database (Gaia DR3 2102038912581334656)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Kepler 643 system from the Sun?

The Kepler 643 system is 3563 light years or 1,092.5 parsecs from the Sun.

What galaxy is the Kepler 643 star in?

The Kepler 643 is in the Milky Way galaxy just like the Sun.

How many stars are in the Kepler 643 system?

The Kepler 643 is a single star, there are no other known stars in the system.

What type of star is the Kepler 643?

The star Kepler 643 is a Red giant star.

What temperature is star Kepler 643?

The star Kepler 643 has an effective temperature of 4812 K. Find out more about the temperature of stars in Stellar guide
Class of stars Red giant
White dwarfs are the hot, extremely dense stellar remnants left behind by stars that originally had masses between about 0.5 and 8 times the mass of the Sun during their main sequence lifetimes. After exhausting their nuclear fuel, these stars shed their outer layers and leave behind a compact core. Although white dwarfs contain between roughly 0.2 and 1.44 solar masses, this mass is packed into a volume comparable to that of an Earth-sized planet, making them some of the densest objects in the Universe.
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