Epsilon Gruis
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Grus |
| Right ascension | 22h 48m 33.29s[1] |
| Declination | −51° 19′ 00.7″[1] |
| Apparent magnitude (V) | 3.49[2] |
| Spectral type | A2IVn[3] |
Epsilon Gruis is a star in the constellation Grus. Its apparent magnitude is 3.49.[2]Located around 39.53 parsecs (128.9 ly) distant,[1] it is a blue-white subgiant of spectral type A2IVn,[3] a star that has used up its core hydrogen and has begun to expand off the main sequence. The star is suspected of having a close companion.[4]
References
- 1 2 3 van Leeuwen, F. (November 2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
- 1 2 "Epsilon Gruis". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 12 July 2015.
- 1 2 Gray, R. O.; et al. (July 2006). "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample". The Astronomical Journal 132 (1): 161–170. arXiv:astro-ph/0603770. Bibcode:2006AJ....132..161G. doi:10.1086/504637.
- ↑ Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x
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