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HD 166620
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Star HD 166620

Orange star HD 166620 is located 36 light years away from the Sun. It is a single star of spectral class K2V, that has 79 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
36 light years
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HD 166620

Orange star, High proper motion star
Spectral class: K2V

Location +

Ascension iconRight ascension: 18h 9m 36.991s
Declination iconDeclination: 38° 27' 20.505'' (northern hemisphere)
Parallax iconParallax: 90.123
Distance iconSun distance: 36.190 ly | 11.1 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: 79.1 % M Sun
| 829 M Jupiter
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Star mass
Mass of the star HD 166620 is 0.791 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: 79 % R Sun
| 7.9 R Jupiter
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Star size
Radius of the star HD 166620 is 0.79 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: 5042 K | 0.87 T Sun
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Star temperature
Surface temperature of HD 166620 is 5042 K, which is 87 % 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: 6.3 billions years | 1.37 Sun
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Star age
Star HD 166620 is 6.3 billion years old, which is about 1.37 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: 0.35 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): 6.4
Magnitude iconAbsolute magnitude (V): 6.2
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 166620 system structure

 HD 166620

More about HD 166620

Nearby star HD 166620 is a main sequence star that fuses hydrogen atoms into helium. It is approximately 80 % of the size of Sun and temperature on its surface is around 5042 K (4769 °C), which is about 87 % of Sun's temperature.
       HD 166620 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
BD+38°3095, GJ 706, Gliese 706, HD 166620, HIP 88972, HR 6806, SAO 66700, LHS 3363, LHS 3363, G 205-5, IRAS 18079+3826, LAL 33439, LFT 1396, LTT 15374, 2MASS J18093745+3827288, NLTT 46046, TIC 75946144, TYC 3102-1975-1, WISEA J180937.13+382723.0, Gaia EDR3 4610177733290768896
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External sources
icon study
icon study
simbad icon
Simbad database (HD 166620)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 4610177733290768896)
Archive from the Gaia mission

Frequently Asked Questions

How far is the HD 166620 system from the Sun?

The HD 166620 system is 36 light years or 11.1 parsecs from the Sun.

What galaxy is the HD 166620 star in?

The HD 166620 is in the Milky Way galaxy just like the Sun.

How many stars are in the HD 166620 system?

The HD 166620 is a single star, there are no other known stars in the system.

What type of star is the HD 166620?

The star HD 166620 is a Orange star star.

What temperature is star HD 166620?

The star HD 166620 has an effective temperature of 5042 K. Find out more about the temperature of stars in Stellar guide
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