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{{Short description|Brown dwarf in the constellation Chamaleon}}
{{one source|date=January 2017}}
{{Starbox begin
{{Starbox begin
| name = Cha 110913-773444
| name = Cha 110913−773444
}}
}}
{{Starbox image
{{Starbox image
| image = [[File:WISE1109-7734 (with marker, edited).png|270px]]
| image = [[File:WISE1109-7734 (with marker, edited).png|270px]]
| caption = [[Wide-field Infrared Survey Explorer|WISE]] image centered on the brown dwarf Cha 110913-773444
| caption = [[Wide-field Infrared Survey Explorer|WISE]] image centered on the brown dwarf Cha 110913−773444
}}
}}
{{Starbox observe
{{Starbox observe
| epoch = [[J2000.0]]
| epoch = [[J2000.0]]
| constell = [[Chamaeleon]]
| constell = [[Chamaeleon]]
| ra = {{RA|11|09|13.63}}<ref name=Luhman>{{cite journal|bibcode=2005ApJ...635L..93L|doi=10.1086/498868|arxiv=astro-ph/0511807|title=Discovery of a Planetary-Mass Brown Dwarf with a Circumstellar Disk|journal=The Astrophysical Journal|volume=635|pages=L93–L96|year=2005|last1=Luhman|first1=K. L|last2=Adame|first2=Lucía|last3=d'Alessio|first3=Paola|last4=Calvet|first4=Nuria|author4-link=Nuria Calvet|last5=Hartmann|first5=Lee|last6=Megeath|first6=S. T|last7=Fazio|first7=G. G|issue=1 |s2cid=11685964 }}</ref>
| ra = 11<sup>h</sup> 09<sup>m</sup> 13.63<sup>s</sup>
| dec = −77° 34' 44.6"
| dec = {{DEC|−77|34|44.6}}<ref name=Luhman/>
| appmag_v = +21.59
| appmag_v =
}}
}}
{{Starbox character
<!-- {{Starbox character
| class = [[Brown dwarf|L-dwarf]]
| class =
| b-v =
| b-v =
| u-b =
| u-b =
| variable =
| variable =
}}
}} -->
{{Starbox astrometry
{{Starbox astrometry
| radial_v =
| radial_v =
Line 26: Line 26:
| parallax =
| parallax =
| p_error =
| p_error =
| dist_ly = 529<ref name=Luhman/><ref group=note name=modulus>From a distance modulus (μ) of 6.05</ref>
| dist_ly = 163
| dist_pc = 50
| dist_pc = 162<ref name=Luhman/>
| absmag_v = +18.1
| absmag_v =
}}
}}
{{Starbox detail
{{Starbox detail
| mass_mj = {{val|8|7|3}}
| mass_mj = {{val|8|7|3}}<ref name=Luhman/>
| radius_rj = 1.8
| radius_rj = 1.8<ref name=Luhman/>
| luminosity_bolometric = 0.000603<ref name=Luhman/><ref group=note>From the logarithm (log ''L''<sub>bol</sub>) of &minus;3.22</ref>
| luminosity = 0.000096
| temperature = 1,350
| temperature = 1300–1400<ref name=Luhman/>
| metal =
| metal =
| rotation =
| rotation =
| age_myr = 0.5–10
| age_myr = 0.5–10<ref name=Luhman/>
}}
}}
{{Starbox reference
{{Starbox reference
| Simbad=Cha+J110913-773444
| Simbad=NAME+Cha+J110913-773444
}}
}}
{{Starbox end}}
{{Starbox end}}


'''Cha 110913-773444''' (sometimes abbreviated '''''Cha 110913''''') is an [[astronomical object]] surrounded by what appears to be a [[protoplanetary disk]]. It lies at a distance of 163 [[light-year]]s from Earth. There is no consensus yet among [[astronomer]]s whether to classify the object as a [[sub-brown dwarf]] (with planets) or a [[rogue planet]] (with moons).<ref name="Cha110913">{{cite web
'''Cha 110913−773444''' (sometimes abbreviated '''''Cha 110913''''') is an [[astronomical object]] surrounded by what appears to be a [[protoplanetary disk]]. It lies at a distance of 529 [[light-year]]s from Earth. There is no consensus yet among astronomers whether to classify the object as a [[sub-brown dwarf]] (with planets) or a [[rogue planet]] (with moons).<ref name="Cha110913">{{cite web
|date=2005-11-29
|date=2005-11-29
|title=A Planet With Planets? Spitzer Finds Cosmic Oddball
|title=A Planet With Planets? Spitzer Finds Cosmic Oddball
|publisher=NASA
|publisher=[[NASA]]
|author=Whitney Clavin
|author=Whitney Clavin
|url=http://www.nasa.gov/vision/universe/starsgalaxies/spitzerf-20051129.html
|url=http://www.nasa.gov/vision/universe/starsgalaxies/spitzerf-20051129.html
|accessdate=2006-03-26}}</ref>
|accessdate=2006-03-26
|archive-date=2012-10-11
|archive-url=https://web.archive.org/web/20121011011111/http://www.nasa.gov/vision/universe/starsgalaxies/spitzerf-20051129.html
|url-status=dead
}}</ref>


Cha 110913-773444 was discovered in 2004 by [[Kevin Luhman]] and others at [[Pennsylvania State University]] using the [[Spitzer Space Telescope]] and the [[Hubble Space Telescope]], as well as two Earth-bound telescopes in [[Chile]].
Cha 110913−773444 was discovered in 2004 by [[Kevin Luhman]] and others at [[Pennsylvania State University]] using the [[Spitzer Space Telescope]] and the [[Hubble Space Telescope]], as well as two Earth-bound telescopes in [[Chile]].


== See also ==
== See also ==
* [[WISEA J120037.79-784508.3]], a brown dwarf with a primordial disk
* [[OTS 44]], a rogue planet
* [[OTS 44]], a rogue planet
* [[SCR 1845-6357]], a binary system with a faint red dwarf and a brown dwarf
* [[SCR 1845-6357]], a binary system with a faint red dwarf and a brown dwarf
* [[PSO J318.5-22]], a rogue planet
* [[PSO J318.5−22]], a rogue planet


== References ==
== References ==
{{reflist}}
{{reflist}}


== External links ==
== Notes ==
{{reflist|group=note}}
* [https://web.archive.org/web/20080613202416/http://exoplanet.eu/Cha110913.html '''Extrasolar Planet Encyclopaedia''': Notes for Cha 110913]
* [http://jumk.de/astronomie/exoplanets/cha-110913-773444.shtml Cha 110913-773444]


{{Stars of Chamaeleon}}
{{Chamaeleon}}


{{DEFAULTSORT:Cha 110913-773444}}
[[Category:Exoplanets]]
[[Category:Rogue planets]]
[[Category:Free-floating substellar objects]]
[[Category:Free-floating substellar objects]]
[[Category:Circumstellar disks]]
[[Category:Circumstellar disks]]
[[Category:Chamaeleon (constellation)]]
[[Category:Chamaeleon]]
[[Category:Astronomical objects discovered in 2004|?]]
[[Category:Astronomical objects discovered in 2004|?]]




{{astronomy-stub}}
{{Brown-dwarf-stub}}

Latest revision as of 22:31, 23 November 2023

Cha 110913−773444

WISE image centered on the brown dwarf Cha 110913−773444
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Chamaeleon
Right ascension 11h 09m 13.63s[1]
Declination −77° 34′ 44.6″[1]
Astrometry
Distance529[1][note 1] ly
(162[1] pc)
Details
Mass8+7
−3[1] MJup
Radius1.8[1] RJup
Luminosity (bolometric)0.000603[1][note 2] L☉
Temperature1300–1400[1] K
Age0.5–10[1] Myr
Database references
SIMBADdata

Cha 110913−773444 (sometimes abbreviated Cha 110913) is an astronomical object surrounded by what appears to be a protoplanetary disk. It lies at a distance of 529 light-years from Earth. There is no consensus yet among astronomers whether to classify the object as a sub-brown dwarf (with planets) or a rogue planet (with moons).[2]

Cha 110913−773444 was discovered in 2004 by Kevin Luhman and others at Pennsylvania State University using the Spitzer Space Telescope and the Hubble Space Telescope, as well as two Earth-bound telescopes in Chile.

See also

[edit]

References

[edit]
  1. ^ a b c d e f g h i Luhman, K. L; Adame, Lucía; d'Alessio, Paola; Calvet, Nuria; Hartmann, Lee; Megeath, S. T; Fazio, G. G (2005). "Discovery of a Planetary-Mass Brown Dwarf with a Circumstellar Disk". The Astrophysical Journal. 635 (1): L93–L96. arXiv:astro-ph/0511807. Bibcode:2005ApJ...635L..93L. doi:10.1086/498868. S2CID 11685964.
  2. ^ Whitney Clavin (2005-11-29). "A Planet With Planets? Spitzer Finds Cosmic Oddball". NASA. Archived from the original on 2012-10-11. Retrieved 2006-03-26.

Notes

[edit]
  1. ^ From a distance modulus (μ) of 6.05
  2. ^ From the logarithm (log Lbol) of −3.22


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