| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Cancer |
| Right ascension | 09h09m21.5s |
| Declination | +22°02′44″ |
| Apparent magnitude (V) | +5.16 |
| Distance | 381 ± 38 ly (117 ± 12 pc) |
| Spectral type | G9IIIFe-1CH-0.5 |
| Other designations | |
Xi Cancri (ξ Cnc, ξ Cancri) is a spectroscopic binary in the constellation Cancer. It is approximately 381 light years from Earth.
This star, along with λ Leo (Alterf), were the Persian Nahn, "the Nose", and the Coptic Piautos, "the Eye", both lunar asterisms.[1].
Nahn was the title of this star in the catalogue of stars in Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars.[2]
The primary component, ξ Cancri A, is a yellow G-type giant with an apparent magnitude of +5.16. Its companion, ξ Cancri B, is 0.1 arcseconds from the primary. The two stars complete one orbit about their common centre of mass once every 4.66 years.
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