Xi Herculis
Xi Herculis is a solitary star located within the northern constellation of Hercules. The star is visible to the naked eye with an apparent visual magnitude of 3.70. Based upon an annual parallax shift of 23.84 mas as seen from Earth, it is located 137 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction factor of 0.05 due to interstellar dust. It is a suspected member of the Sirius stream of co-moving stars.

This is an evolved G-type giant star with a stellar classification of G8 III. It is a red clump star, which means it is on the horizontal branch and generating energy through the thermonuclear fusion of hydrogen at its core. The star is emitting X-rays with a luminosity of in the 0.3–10 keV band. It has twice the mass of the Sun but, at the age of two and a half billion years, it has expanded to 10 times the Sun's radius. The star is radiating 51 times the solar luminosity from its photosphere at an effective temperature of 4,966 K.
Q10448
Hercules
CEL
Q124313
apparent visual magnitude
Concept
Q906561
parallax shift
Concept
Q12097402
mas
Concept
Q531
light year
Concept
Q525
Sun
CEL
Q943247
extinction factor
Concept
Q193384
interstellar dust
Concept
Q3409
Sirius
CEL
Q6472
evolved
Concept
Q25377588
G-type
Concept
Q5875
giant star
Concept
Q25377588
stellar classification
Concept
Q1358411
red clump
Concept
Q50076
horizontal branch
Concept
Q7783221
thermonuclear fusion
UNK
Q1852
X-rays
Concept
Q105902
luminosity
Concept
Q180892
mass of the Sun
Concept
Q48440
Sun's radius
Concept
Q843877
solar luminosity
Concept
Q6372
photosphere
Concept
Q854050
effective temperature
Concept
Q3063131
Xi Herculis
CEL
+3.70^^http://www.w3.org/2001/XMLSchema#decimal
3.70
NUMBER
+23.84^^http://www.w3.org/2001/XMLSchema#decimal
23.84
NUMBER
+0.05^^http://www.w3.org/2001/XMLSchema#decimal
0.05
NUMBER
+8^^http://www.w3.org/2001/XMLSchema#decimal
8
NUMBER
+0.3^^http://www.w3.org/2001/XMLSchema#decimal
0.3
NUMBER
+10^^http://www.w3.org/2001/XMLSchema#decimal
10
NUMBER
+10^^http://www.w3.org/2001/XMLSchema#decimal
10
NUMBER
+51^^http://www.w3.org/2001/XMLSchema#decimal
51
NUMBER
constellation
apparent magnitude
radius
radius