View source for Astronomy:ChaHα8

{{Short description|Star in the constellation Chamaleon}}
{{Starbox short
| name = ChaHα8
| constell = Chamaeleon
| ra = {{RA|11|07|46.102}}<ref name=SIMBAD>{{cite simbad| title = CHSM 10837| accessdate = 29 November 2016 }}</ref>
| dec = {{DEC|-77|40|08.94}}<ref name=SIMBAD/>
| dist_ly = 522
| dist_pc = 160<ref name=Joergens2007/>
| class = M5.75–M6.5<ref name=Joergens2007/>
| appmag_v = 20.1<ref name=SIMBAD/>
| names = [[Astronomy:2MASS|2MASS]] J11074610-7740089<ref name=SIMBAD/>
| Simbad = CHSM+10837
}}
'''ChaHα8''' (also written ChaHa8 when Greek letters are unavailable) is a [[Astronomy:Brown dwarf|brown dwarf]] 522 light years from Earth discovered in 2000.<ref>{{cite journal|last1=Comerón|first1=F.|last2=Neuhäuser|first2=R.|last3=Kaas|first3=A. A.|title=Probing the brown dwarf population of the Chamaeleon I star forming region|journal=Astronomy and Astrophysics|date=2000|volume=359|pages=269–288|bibcode = 2000A&A...359..269C }}</ref> 
== Planetary/Brown dwarf system ==
It was found in 2007 to have a low-mass substellar companion in orbit around it.<ref name=Joergens2007>{{cite journal| year=2007| title=16–20 Jupiter mass RV companion orbiting the brown dwarf candidate ChaHa8| first=V.| last= Joergens|author2=A. Mueller| journal=The Astrophysical Journal| volume=666| issue=2| arxiv=0707.3744|bibcode = 2007ApJ...666L.113J |doi = 10.1086/521825 | s2cid=119140521}}</ref> The companion has a mass of 25–31 [[Astronomy:Jupiter mass|Jupiter mass]]es and orbits with a period of 5.2 years and an eccentricity of 0.59.<ref>{{cite journal|last1=Joergens|first1=V.|last2=Müller|first2=A.|last3=Reffert|first3=S.|title=Improved radial velocity orbit of the young binary brown dwarf candidate Cha Hα 8|journal=Astronomy and Astrophysics|date=2010|volume=521|issue=A24|pages=A24 |doi=10.1051/0004-6361/201014853|arxiv = 1006.2383 |bibcode = 2010A&A...521A..24J |s2cid=54989533 }}</ref>

{{OrbitboxPlanet short|name=ChaHα8|mass=25-31|semimajor=|separation=|period=1899.3|year=|eccentricity=0.59|exoplanet=b}}

==References==
{{reflist}}

==External links==
* [https://www.youtube.com/watch?v=-2KPM8rQs1A Video of the radial velocity orbit of the brown dwarf binary ChaHα8]

{{Stars of Chamaeleon}}

{{DEFAULTSORT:ChaHa8}}
[[Category:Brown dwarfs]]


{{Sourceattribution|ChaHα8}}