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NN Serpentis
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Star NN Serpentis

Binary star NN Serpentis is located 1670 light years away from the Sun. It consists of a white dwarf and a red dwarf. There are multiple known exoplanets in this system.
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Sun distance
1670 light years
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NN Serpentis A

White dwarf
Spectral class: DAO1

Location +

Ascension iconRight ascension: 15h 52m 56.131s
Declination iconDeclination: 12° 54' 44.680'' (equatorial region)
Parallax iconParallax: 1.953
Distance iconSun distance: 1,669.918 ly | 512.0 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: 53.5 % M Sun
| 560 M Jupiter
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Star mass
Mass of the star NN Serpentis A is 0.535 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: 2.1 % R Sun
| 0.2 R Jupiter
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Star size
Radius of the star NN Serpentis A is 0.0211 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: 57000 K | 9.87 T Sun
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Star temperature
Surface temperature of NN Serpentis A is 57000 K, which is 987 % 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

NN Serpentis B

Red dwarf
Spectral class: M4V

Basic characteristic

icon weight
Mass: 11.1 % M Sun
| 116 M Jupiter
+
Star mass
Mass of the star NN Serpentis B is 0.535 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: 14.9 % R Sun
| 1.5 R Jupiter
+
Star size
Radius of the star NN Serpentis B is 0.149 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: 3300 K
 (estimate)
+
Star temperature
Surface temperature of NN Serpentis B is estimated to be 3300 K, which is 57 % 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
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NN Serpentis system structure

 NN Serpentis A
NN Serpentis A b 3.39 AU 724.8 M⊕ 2830 days
NN Serpentis A c 5.38 AU 2196.7 M⊕ 5660 days
NN Serpentis B

More about NN Serpentis

       NN Serpentis can be found in northern celestial hemisphere.
Other designations of this star
NN Ser, PG 1550+131, WD 1550+130
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External sources
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Frequently Asked Questions

How far is the NN Serpentis system from the Sun?

The NN Serpentis system is 1670 light years or 512.0 parsecs from the Sun.

What galaxy is the NN Serpentis star in?

The NN Serpentis is in the Milky Way galaxy just like the Sun.

How many stars are in the NN Serpentis system?

The NN Serpentis system contains 2 stars.

What type of star is the NN Serpentis?

The primary in the NN Serpentis system is a White dwarf star.

What temperature is star NN Serpentis?

The primary in the NN Serpentis system has a temperature of 57000 K. Find out more about the temperature of stars in Stellar guide
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