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Sigma Serpentis
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Star Sigma Serpentis

White-Blue star Sigma Serpentis is located 92 light years away from the Sun. It is a single star of spectral class A9Ib/II, that has 158 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
92 light years
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Sigma Serpentis

White-Blue star, High proper motion star
Spectral class: A9Ib/II

Location +

Ascension iconRight ascension: 16h 22m 4.180s
Declination iconDeclination: 1° 1' 45.366'' (equatorial region)
Parallax iconParallax: 35.539
Distance iconSun distance: 91.775 ly | 28.1 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: 158 % M Sun
| 1655 M Jupiter
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Star mass
Mass of the star Sigma Serpentis is 1.58 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
temperature icon
Temperature: 6952 K | 1.2 T Sun
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Star temperature
Surface temperature of Sigma Serpentis is 6952 K, which is 120 % 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: 1.15 billions years | 0.25 Sun
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Star age
Star Sigma Serpentis is 1.15 billion years old, which is about 0.25 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: 7.7 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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Sigma Serpentis system structure

 Sigma Serpentis

More about Sigma Serpentis

Temperature on its surface is around 6952 K (6679 °C), which is about 120 % of Sun's temperature.
       Sigma Serpentis 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
σ Ser, 50 Serpentis, BD+01° 3215, FK5 1427, HD 147449, HIP 80179, HR 6093, SAO 121540, * sig Ser, Gaia DR3 4408631032807405696
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External sources
simbad icon
Simbad database (* sig Ser)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia DR3 4408631032807405696)
Archive from the Gaia mission

Frequently Asked Questions

How far is the Sigma Serpentis system from the Sun?

The Sigma Serpentis system is 92 light years or 28.1 parsecs from the Sun.

What galaxy is the Sigma Serpentis star in?

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

How many stars are in the Sigma Serpentis system?

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

What type of star is the Sigma Serpentis?

The star Sigma Serpentis is a White-Blue star star.

What temperature is star Sigma Serpentis?

The star Sigma Serpentis has an effective temperature of 6952 K. Find out more about the temperature of stars in Stellar guide
Closest stars

 UCAC3 183-131276
 - 0.7 ly

BD+01 3236
 - 2.4 ly

2MASS J16192830+0050118
 - 5 ly

LSPM J1634+0051
 - 6.7 ly

Gaia DR3 4412390293124414976
 - 7.2 ly
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