View source for Astronomy:2MASS J11145133-2618235

{{Sky|11|14|51.337|-|26|18|23.56|18.20}}
{{Starbox begin
|name=2MASS J11145133-2618235
}}
{{Starbox observe
|epoch=[[Astronomy:J2000|J2000]]{{r|Simbad}}
|equinox=[[Astronomy:J2000|J2000]]{{r|Simbad}}
|constell=[[Astronomy:Hydra (constellation)|Hydra]]
|ra={{RA|11|14|51.337}}{{r|Simbad}}
|dec={{DEC|-26|18|23.56}}{{r|Simbad}}
}}
{{Starbox character
|class=T7.5{{r|Tinney2005}}{{r|Burgasser2006}}{{r|Leggett2007}}{{r|Leggett2012}}{{r|Faherty2012}}
|appmag_1_passband=i <small>({{abbr|GMOS|Gemini Multi-Object Spectrograph}} filter system)</small>
|appmag_1=23.21 ± 0.09{{r|Leggett2012}}
|appmag_2_passband=z <small>({{abbr|GMOS|Gemini Multi-Object Spectrograph}} filter system)</small>
|appmag_2=19.59 ± 0.04{{r|Leggett2012}}
|appmag_3_passband=J <small>(2MASS filter system)</small>
|appmag_3=>15.86 ± 0.08{{r|Tinney2005}}{{r|Burgasser2006}}
|appmag_4_passband=J <small>([[Astronomy:Mauna Kea Observatory|MKO]] filter system)</small>
|appmag_4=15.52 ± 0.05{{r|Faherty2012}}
|appmag_5_passband=H <small>(2MASS filter system)</small>
|appmag_5=>15.73 ± 0.12{{r|Burgasser2006}}
|appmag_6_passband=H <small>([[Astronomy:Mauna Kea Observatory|MKO]] filter system)</small>
|appmag_6=15.82 ± 0.05{{r|Faherty2012}}
|appmag_7_passband=K<sub>S</sub> <small>(2MASS filter system)</small>
|appmag_7=>16.1{{r|Burgasser2006}}
|appmag_8_passband=K<sub>S</sub> <small>([[Astronomy:Mauna Kea Observatory|MKO]] filter system)</small>
|appmag_8=16.54 ± 0.05{{r|Faherty2012}}
}}
{{Starbox astrometry
|prop_mo_ra=-3018.8 ± 1.1{{r|Dupuy & Liu2012}}
|prop_mo_dec=-384.1 ± 1.4{{r|Dupuy & Liu2012}}
|parallax=179.2
|p_error=1.4
|parallax_footnote={{r|Dupuy & Liu2012}}
}}
{{Starbox detail
|age_gyr=3–8{{r|Leggett2007}}
|mass=0.029–0.048{{r|Leggett2007}}
|mass_mj=30–50{{r|Leggett2007}}
|gravity=5.0–5.3{{r|Leggett2007}}
|temperature=725–775{{r|Leggett2007}}
|metal=-0.3 ± 0.1 [m/H]{{r|Leggett2007}}
}}
{{Starbox catalog
|names=2MASS J11145133-2618235,{{r|Simbad}}{{r|Tinney2005}}<br>2MASS 1114-2618,{{r|Burgasser2006}}<br>2M1114-26,{{r|Tinney2005}}<br>2M1114-2618,{{r|Tinney2005}}<br>2MASS 1114-26,{{r|Leggett2007}}<br>2MASS J1114-2618,{{r|Faherty2012}}<br>[[Astronomy:Wide-field Infrared Survey Explorer|WISE]] J111448.79−261827.7{{r|Kirkpatrick2012}}
}}
{{Starbox reference
|Simbad=2MASSJ11145133-2618235
}}
{{Starbox end}}

'''2MASS J11145133-2618235''' (designation abbreviated to '''2MASS 1114-2618''',{{r|Burgasser2006}} or '''2M1114-26''',{{r|Tinney2005}} or '''2M1114-2618''',{{r|Tinney2005}} or '''2MASS 1114-26''',{{r|Leggett2007}} or '''2MASS J1114-2618'''{{r|Faherty2012}}) is nearby [[Astronomy:Brown dwarf|brown dwarf]] of spectral class T7.5,{{r|Tinney2005}}{{r|Burgasser2006}}{{r|Leggett2007}}{{r|Leggett2012}}{{r|Faherty2012}} located in constellation [[Astronomy:Hydra (constellation)|Hydra]]<ref name="note 1" group="note">The nearest known [[Astronomy:Star|star]]/[[Astronomy:Brown dwarf|brown dwarf]] in this constellation.</ref> at approximately 18 [[Astronomy:Light-year|light-year]]s from [[Astronomy:Earth|Earth]].{{r|Dupuy & Liu2012}}

==Discovery==
'''2MASS 1114-2618''' was discovered in 2005 by C. G. Tinney et al. from the 2MASS Wide-Field T Dwarf Search (WFTS), based on observations obtained at the [[Astronomy:Anglo-Australian Telescope|Anglo-Australian Telescope]], Siding Spring, {{wipe|Australia}}. In 2005 Tinney et al. published a paper in [[Astronomy:The Astronomical Journal|The Astronomical Journal]], where they presented discovery of five new [[Astronomy:Brown dwarf|brown dwarf]]s of spectral type T, among which also was 2MASS 1114-2618.{{r|Tinney2005}}

==Distance==
Trigonometric parallax of 2MASS 1114-2618, measured in 2012 by Dupuy & Liu under The Hawaii Infrared Parallax Program, is 0.1792 ± 0.0014 [[Arcsecond|arcsec]], corresponding to a distance 5.58 ± 0.04    [[Astronomy:Parsec|pc]], or 18.20 ± 0.14 [[Astronomy:Light-year|ly]].{{r|Dupuy & Liu2012}}

Photometric distance estimate of 2MASS 1114-2618, published in its discovery paper in 2005, is 7 [[Astronomy:Parsec|pc]] (22.8 [[Astronomy:Light-year|ly]]).{{r|Tinney2005}} Spectrophotometric distance estimate by Kirkpatrick et al. (2012), is 6.6 [[Astronomy:Parsec|pc]] (21.5 [[Astronomy:Light-year|ly]]).{{r|Kirkpatrick2012}}

==Proper motion==
2MASS 1114-2618 has quite a large [[Astronomy:Proper motion|proper motion]] of 3043.2 mas/[[Year|yr]] with [[Astronomy:Position angle|position angle]] 262.75 [[Degree (angle)|degrees]],{{r|Dupuy & Liu2012}} indicating motion in south-west direction on the sky. At distance 18.20 ly (assuming parallax 179.2 ± 1.4 mas),{{r|Dupuy & Liu2012}} corresponding tangential velocity is 80.56 km/[[Second|s]].{{r|Dupuy & Liu2012}}

==See also==
The other four discoveries of brown dwarfs, presented in Tinney et al. (2005):{{r|Tinney2005}}
*2MASS 0050-3322 (T7.5)
*[[Astronomy:2MASS 0939-2448|2MASS 0939-2448]] (T8, binary brown dwarf)
*2MASS 0949-1545 (T1)
*2MASS 1122-3512 (T2)

==Notes==
<references group="note"/>

==References==
{{Reflist|colwidth=30em|refs=
<ref name="Tinney2005">{{cite journal  |last=Tinney |first=C. G.  |author2=Burgasser, Adam J.  |author3=Kirkpatrick, J. Davy  |author4=McElwain, Michael W.  |title=The 2MASS Wide-Field T Dwarf Search. IV. Hunting Out T Dwarfs with Methane Imaging  |date=2005  |journal=[[Astronomy:The Astronomical Journal|The Astronomical Journal]]  |volume=130 | issue=5 | pages=2326–2346  |arxiv=astro-ph/0508150  |doi=10.1086/491734  |bibcode=2005AJ....130.2326T}}</ref>
<ref name="Burgasser2006">{{cite journal  |last=Burgasser |first=A. J.  |author2=Geballe, T. R.  |author3=Leggett, S. K.  |author4=Kirkpatrick, J. Davy  |author5=Golimowski, David A.  |title=A Unified Near-Infrared Spectral Classification Scheme for T Dwarfs  |date=2006  |journal=[[Astronomy:The Astrophysical Journal|The Astrophysical Journal]]  |volume=637 | issue=2 | pages=1067–1093  |arxiv=astro-ph/0510090  |doi=10.1086/498563  |bibcode=2006ApJ...637.1067B}}</ref>
<ref name="Leggett2007">{{cite journal  |last=Leggett |first=S. K.  |author2=Marley, M. S.  |author3=Freedman, R.  |author4=Saumon, D.  |author5=Liu, Michael C.  |author6=Geballe, T. R.  |author7=Golimowski, D. A.  |author8=Stephens, D. C.  |title=Physical and Spectral Characteristics of the T8 and Later Type Dwarfs  |date=2007  |journal=[[Astronomy:The Astrophysical Journal|The Astrophysical Journal]]  |volume=667 | issue=1 | pages=537–548  |arxiv=0705.2602  |doi=10.1086/519948  |bibcode=2007ApJ...667..537L}}</ref>
<ref name="Leggett2012">{{cite journal  |last=Leggett |first=S. K.  |author2=Saumon, D.  |author3=Marley, M. S.  |author4=Lodders, K.  |author5=Canty, J.  |author6=Lucas, P.  |author7=Smart, R. L.  |author8=Tinney, C. G.  |author9=Homeier, D.  |author10=Allard, F.  |author11=Burningham, Ben  |author12=Day-Jones, A.  |author13=Fegley, B.  |author14=Ishii, Miki  |author15=Jones, H. R. A.  |author16=Marocco, F.  |author17=Pinfield, D. J.  |author18=Tamura, M.  |title=The Properties of the 500 K Dwarf UGPS J072227.51-054031.2 and a Study of the Far-red Flux of Cold Brown Dwarfs  |date=2012  |journal=[[Astronomy:The Astrophysical Journal|The Astrophysical Journal]]  |volume=748 | issue=2 | pages=74  |arxiv=1201.2973  |doi=10.1088/0004-637X/748/2/74  |bibcode=2012ApJ...748...74L}}</ref>
<ref name="Kirkpatrick2012">{{cite journal |  last1=Kirkpatrick | last2=Gelino |first1=J. D. | first2=C. R. | last3=Cushing | first3=M. C. | last4=Mace | first4=G. N. | last5=Griffith | first5=R. L. | last6=Skrutskie | first6=M. F. | last7=Marsh | first7=K. A. | last8=Wright | first8=E. L. | last9=Eisenhardt | first9=P. R. | last10=McLean | first10=I. S. | last11=Mainzer | first11=A. K. | last12=Burgasser | first12=A. J. | last13=Tinney | first13=C. G. | last14=Parker | first14=S. | last15=Salter | first15=G. | title=Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function | date=2012 | journal=[[Astronomy:The Astrophysical Journal|The Astrophysical Journal]] | volume=753 | issue=2 | pages=156 | arxiv=1205.2122 | doi=10.1088/0004-637X/753/2/156 | bibcode=2012ApJ...753..156K}}</ref>
<ref name="Faherty2012">{{cite journal  |last=Faherty |first=Jacqueline K.  |author2=Burgasser, Adam J.  |author3=Walter, Frederick M.  |author4=Van der Bliek, Nicole  |author5=Shara, Michael M.  |author6=Cruz, Kelle L.  |author7=West, Andrew A.  |author8=Vrba, Frederick J.  |author9=Anglada-Escud, Guillem  |title=The Brown Dwarf Kinematics Project (BDKP). III. Parallaxes for 70 Ultracool Dwarfs  |date=2012  |journal=[[Astronomy:The Astrophysical Journal|The Astrophysical Journal]]  |volume=752 | issue=1 | pages=56  |arxiv=1203.5543  |doi=10.1088/0004-637X/752/1/56  |bibcode=2012ApJ...752...56F}}</ref>
<ref name="Dupuy &amp; Liu2012">{{cite journal  |last=Dupuy |first=Trent J.  |last2=Liu |first2=Michael C.  |title=The Hawaii Infrared Parallax Program. I. Ultracool Binaries and the L/T Transition  |year=2012  |journal=The Astrophysical Journal Supplement  |volume=201 | issue=2 | pages=19  |arxiv=1201.2465  |doi=10.1088/0067-0049/201/2/19  |bibcode=2012ApJS..201...19D}}</ref>

<ref name="Simbad">{{cite web
 | url=http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=2MASSJ11145133-2618235&submit=SIMBAD+search
 | title=2MASS J11145133-2618235 -- Brown Dwarf (M<0.08solMass)
 | work=[[Astronomy:SIMBAD|SIMBAD]]
 | publisher=Centre de Données astronomiques de Strasbourg
 | accessdate=2012-07-26}}</ref>
}}

{{Nearest star systems|4}}
{{Stars of Hydra}}

[[Category:Brown dwarfs]]
[[Category:T-type stars]]
[[Category:Hydra (constellation)]]
[[Category:2MASS objects]]
[[Category:WISE objects]]

{{Sourceattribution|2MASS J11145133-2618235|1}}