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Xi-2
Hot blue starIts story
Xi-2 Ceti is a blue-white B9.5 giant that astronomers use as a spectrophotometric standard star: a fixed benchmark against which fainter lights of the sky are calibrated. At 193 light-years, with two and a half solar masses and only 127 million years of life, it has exhausted its core hydrogen and expanded in its slow evolution. It is a reference star, a luminous yardstick.
- Constellation
- Cetus
- Apparent magnitude
- 4.30
- Distance
- 193.1 light years
- Coordinates (J2000)
- RA 37.040° · Dec 8.460°
- Catalogue
- HIP 11484 · HD 15318
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