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Gliese 832 (Gl 832 or GJ 832) is a red dwarf star (spectrum M1.5V) in the constellation Grus. It is located relatively near our Sun, at a distance of 16.1 light years. The star is about half the mass and radius of the Sun.

Jupiter-like planet

In September 2008, it was announced that a Jupiter-like planet had been detected in a long-period, near-circular orbit around this star (false alarm probability thus far: a negligible 0.05%). It would induce an astrometric perturbation on its star of at least 0.95 milliarcseconds and is thus a good candidate for being detected by astrometric observations. Among currently-known exoplanets, it would have an angular distance from its star second only to Epsilon Eridani b, although direct imaging is problematic due to the star–planet contrast.

X-ray source

Gliese 832 emits X-rays.

See also

• List of nearest stars
• List of extrasolar planets

Notes

1. From L=4πRσT_eff, where L is the luminosity, R is the radius, T_eff is the effective surface temperature and σ is the Stefan–Boltzmann constant.

References

1. ^ Bailey, Jeremy; et al. (2008). "A Jupiter-like Planet Orbiting the Nearby M Dwarf GJ832". The Astrophysical Journal. 690 (1): 743–747. arXiv:0809.0172. Bibcode:2009ApJ...690..743B. doi:10.1088/0004-637X/690/1/743. {{cite journal}}: |access-date= requires |url= (help); Explicit use of et al. in: |author= (help)
2. ^ Perryman, M. A. C.; et al. (1997), "The Hipparcos Catalogue", Astronomy & Astrophysics, 323: L49 – L52, Bibcode:1997A&A...323L..49P
3. Johnson, H. M.; Wright, C. D. (1983). "Predicted infrared brightness of stars within 25 parsecs of the sun". Astrophysical Journal Supplement Series. 53: 643–771. Bibcode:1983ApJS...53..643J. doi:10.1086/190905.{{cite journal}}: CS1 maint: multiple names: authors list (link)
4. Interpolated value from NASA Exoplanet Archive, per:
   Bessell, M. S. (August 10–12, 1994). "The Bottom of the Main Sequence - and Beyond". Proceedings of the ESO Workshop. Garching, Germany: Springer-Verlag Berlin Heidelberg New York. Bibcode:1995bmsb.conf..123B. {{cite conference}}: Unknown parameter |booktitle= ignored (|book-title= suggested) (help); Unknown parameter |editors= ignored (|editor= suggested) (help)CS1 maint: date format (link)
5. Schmitt, J.H.M.M.; Fleming, T.A.; Giampapa M.S. (1995). "The X-ray view of the low-mass stars in the solar neighborhood". Astrophysical Journal. 450 (9): 392–400. Bibcode:1995ApJ...450..392S. doi:10.1086/176149. {{cite journal}}: Unknown parameter |month= ignored (help)CS1 maint: multiple names: authors list (link)

v t e Constellation of Grus
List of stars in Grus List of star names in Grus Grus in Chinese astronomy
Stars	Bayer α (Alnair) β (Tiaki) γ (Aldhanab) δ δ ε ζ η θ ι κ λ μ μ ν ξ ο π π ρ σ σ τ τ τ υ φ Variable RZ CE HR 8323 8501 HD 208487 (Itonda) 213240 215456 Other 2MASS J22282889–4310262 Gliese 832 PSR J2144−3933 S5-HVS1 WASP-95 WISE 2220−3628
Exoplanets Gliese 832 b HD 208487 b HD 213240 b τ Gruis b
Galaxies	NGC 7070 7070A 7072 7075 7079 7087 7213 7418 7424 7496 7531 7552 7582 7590 Other IC 1459 IC 5201
Galaxy clusters Abell S1063
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