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Sigma Draconis
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Star Sigma Draconis

Orange star Sigma Draconis is located 19 light years away from the Sun. It is a single star of spectral class K0V, that has 85 % of solar mass. There is at least one exoplanet in this system.
Sun distance
19 light years
galaxy map

Sigma Draconis

Orange star, High proper motion star
Spectral class: K0V

Location

Ascension iconRight ascension: 19h 32m 23.427s
Declination iconDeclination: 69° 39' 12.424'' (northern hemisphere)
Parallax iconParallax: 173.494
Distance iconSun distance: 18.799 ly | 5.8 pc

Basic characteristic

icon weight
Mass: 85 % M Sun | 890 M Jupiter
radius icon
Size: 78 % R Sun | 7.7 R Jupiter
temperature iconTemperature: 5338 K | 0.92 T Sun
time iconAge: 3 billions years | 0.65 Sun
luminosity iconLuminosity: 0.41 L Sun

Photometry

Magnitude iconApparent magnitude (V): 4.7
Magnitude iconAbsolute magnitude (V): 5.9
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

Sigma Draconis system structure

 Sigma Draconis
Sigma Draconis b
unconfirmed
 0.81 AU 12 M⊕ -
More about Sigma Draconis
Nearby star Sigma Draconis 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 5338 K (5065 °C), which is about 92 % of Sun's temperature.
       Sigma 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
Alsafi, Gliese 764, GJ 764, σ Draconis, 61 Draconis, BD+69°1053, GCTP 4607.00, HD 185144, HIC 96100, HIP 96100, HR 7462, LHS 477, GAT 1255, LFT 1486, LTT 15713, 2MASS J19322153+6939413, NLTT 47961, ROT 2825, TIC 259237827, TYC 4448-2481-1, WISEA J193222.79+693922.3, WDS J19324+6940A, Gaia EDR3 2261614264931057664
External sources
icon study
Asteroseismology of the Nearby K-Dwarf σ Draconis using the Keck Planet Finder and TESS
Scientific study, Accepted: 30. 07. 2024
simbad icon
Simbad database (* sig Dra)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 2261614264931057664)
Archive from the Gaia mission
Closest stars

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 0.81 M☉ 3.3 ly

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 0.61 M☉ 5.8 ly

Gliese 4053
 0.16 M☉ 6.8 ly

WISE J1506+7027
 0.09 M☉ 6.9 ly
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