Fafnir
Place on the Hertzsprung-Russell diagram
a giant · 95 times brighter than the Sun in visible light · 8 640 catalogue stars behind it
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- Constellation
- Draco
- Apparent magnitude
- 4.82
- Absolute magnitude
- -0.12
- Distance
- 317 light years
- Temperature
- 4 328 K
- Spectral class
- K1.5IIIFe-0.5
- Proper motion
- 0.108 ″/ years
- Radial velocity
- 32 km/s
- Right ascension
- 276.4963 °
- Declination
- 65.5636 °
- Catalogue numbers
- HR 6945 · HD 170693
№7812 / 9096
№5326 / 8923
№5646 / 8923
№7134 / 8786
№1602 / 9092
What kind of star this is
A giant: the core hydrogen is spent, the star has swollen tens of times over and cooled at the surface while staying far brighter than the Sun — luminosity comes from area, not from temperature. Ahead of it lies the shedding of its outer layers as a planetary nebula, and a cooling core the size of the Earth: a white dwarf.