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Psi1 Draconis
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Star Psi1 Draconis

Triple star system Psi1 Draconis is located 74 light years away from the Sun. It is a system with 3 stars. There is at least one exoplanet in this system.
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Sun distance
74 light years
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Psi1 Draconis A

Yellow-White star, Spectroscopic binary
Spectral class: F5IV-V C

Location +

Ascension iconRight ascension: 17h 41m 56.378s
Declination iconDeclination: 72° 8' 51.579'' (northern hemisphere)
Parallax iconParallax: 43.950
Distance iconSun distance: 74.211 ly | 22.8 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: 138 % M Sun
| 1446 M Jupiter
+
Star mass
Mass of the star Psi1 Draconis A is 1.38 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: 125 % R Sun
| 12.4 R Jupiter
+
Star size
Radius of the star Psi1 Draconis A is 1.25 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: 6544 K | 1.13 T Sun
+
Star temperature
Surface temperature of Psi1 Draconis A is 6544 K, which is 113 % 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): 4.6
Magnitude iconAbsolute magnitude (V): 2.8
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

Psi1 Draconis B

Yellow-White star, High proper motion star
Spectral class: F8V

Basic characteristic

icon weight
Mass: 119 % M Sun
| 1247 M Jupiter
+
Star mass
Mass of the star Psi1 Draconis B is 1.38 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: 150 % R Sun
| 14.9 R Jupiter
+
Star size
Radius of the star Psi1 Draconis B is 1.5 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: 6212 K | 1.08 T Sun
+
Star temperature
Surface temperature of Psi1 Draconis B is 6212 K, which is 108 % 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: 3.3 billions years | 0.72 Sun
+
Star age
Star Psi1 Draconis B is 3.3 billion years old, which is about 0.72 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

Photometry

Magnitude iconApparent magnitude (V): 5.5
Magnitude iconAbsolute magnitude (V): 3.8
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

Psi1 Draconis C

Orange star, , High proper motion star

Basic characteristic

icon weight
Mass: 70 % M Sun
| 733 M Jupiter
+
Star mass
Mass of the star Psi1 Draconis C is 1.19 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: 70 % R Sun
| 7.1 R Jupiter
(estimate)
+
Star size
Radius of the star Psi1 Draconis C is not known. Its estimated value based on other similar stars is about 70 % 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: 4400 K
 (estimate)
+
Star temperature
Surface temperature of Psi1 Draconis C is estimated to be 4434 K, which is 76 % 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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Psi1 Draconis system structure

 Psi1 Draconis A
Psi1 Draconis B
Psi1 Draconis B b 4.43 AU 486.4 M⊕ 3117 days
Psi1 Draconis C

More about Psi1 Draconis

       Psi1 Draconis can be found in northern celestial hemisphere, and it is possible to see it with naked eye. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
BD+72° 805, HD 162004, HIC 86620, HIP 86620, HR 6637, SAO 8891, 31 Draconis, 31 Dra, ADS 10759 AB, Gliese 694.1, GJ 694.1, ψ¹ Dra A: BD+72° 804, HD 162003, HIC 86614, HIP 86614, HR 6636, SAO 8890, Gaia EDR3 1651268660203160448
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Frequently Asked Questions

How far is the Psi1 Draconis system from the Sun?

The Psi1 Draconis system is 74 light years or 22.8 parsecs from the Sun.

What galaxy is the Psi1 Draconis star in?

The Psi1 Draconis is in the Milky Way galaxy just like the Sun.

How many stars are in the Psi1 Draconis system?

The Psi1 Draconis system contains 3 stars.

What type of star is the Psi1 Draconis?

The primary in the Psi1 Draconis system is a Yellow-White star star.

What temperature is star Psi1 Draconis?

The primary in the Psi1 Draconis system has a temperature of 6544 K. Find out more about the temperature of stars in Stellar guide
Closest stars

 HD 160964
 - 7.8 ly

LP 44-162
 - 7.8 ly

LSPM J1728+7108
 - 8.4 ly

LSPM J1844+7408
 - 8.6 ly

Omega Draconis
 1.5 M☉ 8.8 ly
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