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PH1 Aa
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Star PH1 Aa

Multiple star system PH1 Aa is located 7200 light years away from the Sun. It is a system with 4 stars. There is at least one exoplanet in this system.
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Sun distance
7200 light years
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PH1 Aa

Yellow-White star

Location +

Ascension iconRight ascension: 19h 52m 51.624s
Declination iconDeclination: 39° 57' 18.360'' (northern hemisphere)
Parallax iconParallax: 0.500
Distance iconSun distance: 7,200.000 ly | 2,207.5 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: 138.4 % M Sun
| 1450 M Jupiter
+
Star mass
Mass of the star PH1 Aa is 1.384 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: 160 % R Sun
| 15.4 R Jupiter
(estimate)
+
Star size
Radius of the star PH1 Aa is not known. Its estimated value based on other similar stars is about 160 % 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 iconTemperature: 6300 K
 (estimate)
+
Star temperature
Surface temperature of PH1 Aa is estimated to be 6280 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
time icon
Age: 2 billions years | 0.43 Sun
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Star age
Star PH1 Aa is 2 billion years old, which is about 0.43 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

PH1 Ab

Red dwarf

Basic characteristic

icon weight
Mass: 33.6 % M Sun
| 352 M Jupiter
+
Star mass
Mass of the star PH1 Ab is 1.384 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: 40 % R Sun
| 3.8 R Jupiter
(estimate)
+
Star size
Radius of the star PH1 Ab 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
temperature iconTemperature: 3400 K
 (estimate)
+
Star temperature
Surface temperature of PH1 Ab is estimated to be 3433 K, which is 59 % 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: 2 billions years | 0.43 Sun
+
Star age
Star PH1 Ab is 2 billion years old, which is about 0.43 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

PH1 Ba

Yellow star

Basic characteristic

icon weight
Mass: 99 % M Sun
| 1037 M Jupiter
+
Star mass
Mass of the star PH1 Ba is 0.336 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
| 10.4 R Jupiter
(estimate)
+
Star size
Radius of the star PH1 Ba 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 iconTemperature: 5600 K
 (estimate)
+
Star temperature
Surface temperature of PH1 Ba is estimated to be 5603 K, which is 97 % 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: 2 billions years | 0.43 Sun
+
Star age
Star PH1 Ba is 2 billion years old, which is about 0.43 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

PH1 Bb

Red dwarf

Basic characteristic

icon weight
Mass: 51 % M Sun
| 534 M Jupiter
+
Star mass
Mass of the star PH1 Bb is 0.99 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: 50 % R Sun
| 5.2 R Jupiter
(estimate)
+
Star size
Radius of the star PH1 Bb is not known. Its estimated value based on other similar stars is about 50 % 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 iconTemperature: 3800 K
 (estimate)
+
Star temperature
Surface temperature of PH1 Bb is estimated to be 3827 K, which is 66 % 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: 2 billions years | 0.43 Sun
+
Star age
Star PH1 Bb is 2 billion years old, which is about 0.43 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
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PH1 Aa system structure

 PH1 Aa
PH1 Aa b 0.63 AU 31.8 M⊕ 6.2 R⊕ 138.5 days
PH1 Ab
PH1 Ba
PH1 Bb

More about PH1 Aa

       PH1 Aa can be found in northern celestial hemisphere.
Other designations of this star
Kepler-64, KIC 4862625, 2MASS 19525162+3957183
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Frequently Asked Questions

How far is the PH1 Aa system from the Sun?

The PH1 Aa system is 7200 light years or 2,207.5 parsecs from the Sun.

What galaxy is the PH1 Aa star in?

The PH1 Aa is in the Milky Way galaxy just like the Sun.

How many stars are in the PH1 Aa system?

The PH1 Aa system contains 4 stars.

What type of star is the PH1 Aa?

The primary in the PH1 Aa system is a Yellow-White star star.

What temperature is the PH1 Aa?

The primary in the PH1 Aa system has an effective temperature of K ( °C). Find out more about the temperature of stars in Stellar guide
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