Xi Cancri
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| 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.
Name
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]
Structure
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 with an eccentricity of 0.07.[3]
References
- ↑ Allen, R. H. (1963). Star Names: Their Lore and Meaning (Reprint ed.). New York, NY: Dover Publications Inc. p. 114. ISBN 0-486-21079-0. Retrieved 2010-12-12.
- ↑ Jack W. Rhoads - Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars, Jet Propulsion Laboratory, California Institute of Technology; November 15, 1971
- ↑ Jackson, E. S.; Shane, W. W.; Lynds, Beverly T. (May 1957), "The Orbits of the Spectroscopic Binaries Omicron Tauri, Xi Cancri, and Mu Ursae Majories", Astrophysical Journal 125: 712, Bibcode:1957ApJ...125..712J, doi:10.1086/146345
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This article is issued from Wikipedia - version of the Saturday, December 26, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.