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Nearby stars catalogue

Alpha Serpentis

Star Alpha Serpentis

Red giant Alpha Serpentis is located 74 light years away from the Sun. It is a single star of spectral class K2IIIbCN1, that has 166 % of solar mass. For now, there are no known exoplanets in this star system.

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Nearby stars catalogue

Sun distance
74 light years

Alpha Serpentis

Red giant, High proper motion star

Spectral class: K2IIIbCN1

Location +

Right ascension: 15h 44m 16.220s

Declination: 6° 25' 32.998'' (equatorial region)

Parallax: 43.945

Sun distance: 74.219 ly | 22.8 pc

Basic characteristic

Mass: 166 % M Sun

Size: 1348 % R Sun

Temperature: 4498 K | 0.78 T Sun

Luminosity: 70 L Sun

Photometry

Apparent magnitude (V): 2.6

Absolute magnitude (V): 0.8

Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).

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

Alpha Serpentis system structure


	Alpha Serpentis

More about Alpha Serpentis

Nearby star Alpha Serpentis is is approximately 13 times bigger than the Sun and temperature on its surface is around 4498 K (4225 °C), which is about 78 % of Sun's temperature.

       Alpha 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
Unukalhai, Cor Serpentis, Alpha Ser, α Ser, 24 Serpentis, BD+06° 3088, HD 140573, HIP 77070, HR 5854, SAO 121157, ADS 9765, CCDM 15442+0626, Gaia EDR3 4429785739602747392

External sources

Simbad database (* alf Ser)

Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)

Gaia database (Gaia EDR3 4429785739602747392)

Archive from the Gaia mission

Frequently Asked Questions

How far is the Alpha Serpentis system from the Sun?

The Alpha Serpentis system is 74 light years or 22.8 parsecs from the Sun.

What galaxy is the Alpha Serpentis star in?

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

How many stars are in the Alpha Serpentis system?

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

What type of star is the Alpha Serpentis?

The star Alpha Serpentis is a Red giant star.

What temperature is star Alpha Serpentis?

The star Alpha Serpentis has an effective temperature of 4498 K. Find out more about the temperature of stars in Stellar guide

Class of stars Red giant

White dwarfs are the hot, extremely dense stellar remnants left behind by stars that originally had masses between about 0.5 and 8 times the mass of the Sun during their main sequence lifetimes. After exhausting their nuclear fuel, these stars shed their outer layers and leave behind a compact core. Although white dwarfs contain between roughly 0.2 and 1.44 solar masses, this mass is packed into a volume comparable to that of an Earth-sized planet, making them some of the densest objects in the Universe.

Closest stars

Epsilon Serpentis	1.8 M☉	4 ly
PM J15589+0417	-	5.5 ly
G 16-5	-	6.5 ly
HD 141272	-	7.2 ly
LSPM J1550+0616	-	7.4 ly

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About Stellar Catalog

Working with real data

Data in Stellar Catalog come from trusted scientific sources. Primary source is Gaia space telescope mapping the stars in Milky Way. Other sources include research papers, Simbad catalog and Exoplanet.eu database.

Estimated values

Objects listed in the Stellar Catalog often have values that are estimates. These estimates are determined using their known characteristics, such as spectral type, brightness across different wavelengths, distance from a star, and other factors.

Fresh and validated

Stellar Catalog is continuously updated with new information from research papers. Stellar and planetary data are validated by automatic processes as well as humans.