{{Short description|Distant star in the constellation Lupus}} {{Starbox begin | name = Lupus-TR-3 }} {{Starbox observe | epoch = J2000 | constell = Lupus | ra = {{RA|15|30|18.66718}}<ref name = GaiaDR3/> | dec = {{DEC|-42|58|41.6640}}<ref name = GaiaDR3/> | appmag_v = 17.4<ref name = Weldrake2008/> }} {{Starbox character | class = K1 V<ref name = Ehrenreich2011/> | b-v = +1.28<ref name = Weldrake2008/><ref name = GSC2001/> | appmag_1_passband = B | appmag_1 = 18.68{{±|0.43}}<ref name = GSC2001/> | appmag_3_passband = J | appmag_3 = 15.80{{±|0.09}}<ref name = Curti2003/> | appmag_4_passband = H | appmag_4 = 15.39{{±|0.13}}<ref name = Curti2003/> | appmag_5_passband = K | appmag_5 = 15.48{{±|0.25}}<ref name = Curti2003/> }} {{Starbox astrometry | radial_v = | prop_mo_ra = −3.798 | prop_mo_dec = −7.197 | pm_footnote = <ref name = GaiaDR3/> | dist_pc = ~2,000<ref name = Weldrake2008/> | parallax = | p_error = | absmag_v = }} {{Starbox detail | source = <ref name = Weldrake2008/> | mass = 0.87{{±|0.04}} | radius = 0.82{{±|0.05}} | density = | gravity = | luminosity = | temperature = 5,000{{±|150}} | metal = | rotation = | age = }} {{Starbox catalog | names=GSC2 S233113121866, USNO-B1.0 0470-00456338, DENIS-P J153018.6-425841, 2MASS J15301866-4258415<ref name="SIMBAD"/> }} {{Starbox reference | Simbad = Lupus-TR+3 | EPE = Lupus-TR-3 | NSTED = Lupus-TR-3 }} {{Starbox end}}
'''Lupus-TR-3''' is a star located in the southern constellation Lupus. It has an apparent magnitude of 17.4,<ref name = Weldrake2008/> making it visible only in power telescopes. Its distance is not well known, but it is estimated to be roughly 2,000 parsecs away from the Solar System.<ref name = Weldrake2008/>
==Physical characteristics== Lupus-TR-3 has a stellar classification of K1 V,<ref name = Ehrenreich2011/> indicating that it is an ordinary K-type main-sequence star. It has 87% the mass of the Sun and 82% the radius of the Sun. It radiates at an effective temperature of {{val|5000|ul=K|fmt=commas}}.<ref name = Weldrake2008/>
==Planetary system== Lupus-TR-3 b is an exoplanet discovered in 2007 by personnel from the Center for Astrophysics {{!}} Harvard & Smithsonian using the transit method. It has four-fifths the mass of Jupiter, nine-tenths the radius, and has density of 1.4 g/cm<sup>3</sup>. This planet is a typical "hot Jupiter" as it orbits at 0.0464 AU distance from the star, taking 3.9 days to orbit. It is currently the faintest ground-based detection of a transiting planet.<ref name = Weldrake2008/>
{{OrbitboxPlanet begin | table_ref = <ref name = Weldrake2008/> }} {{OrbitboxPlanet | exoplanet = b | mass = 0.81{{±|0.18}} | radius = 0.89{{±|0.07}} | semimajor = 0.0464 ± 0.0007 | period = 3.91405{{±|0.00004}} | inclination = 88.3{{±|1.3|0.8}} | eccentricity = 0.00 }} {{Orbitbox end}}
==See also== * List of extrasolar planets * Harvard-Smithsonian Center for Astrophysics
==References== {{reflist||refs =
<ref name = GaiaDR3>{{Cite DR3|6002207729507530880}}</ref>
<ref name = Weldrake2008>{{cite journal | last1 = Weldrake | first1 = David T. F. | last2 = Bayliss | first2 = Daniel D. R. | last3 = Sackett | first3 = Penny D. | last4 = Tingley | first4 = Brandon W. | last5 = Gillon | first5 = Michaël | last6 = Setiawan | first6 = Johny | title = Lupus-TR-3b: A Low-Mass Transiting Hot Jupiter in the Galactic Plane? | journal = The Astrophysical Journal | date = 30 January 2008 | volume = 675 | issue = 1 | pages = L37–L40 | issn = 0004-637X | eissn = 1538-4357 | doi = 10.1086/529519 | bibcode = 2008ApJ...675L..37W | arxiv = 0711.1746 | s2cid = 13285272 | doi-access = free}}</ref>
<ref name = GSC2001>{{cite journal |title=VizieR Online Data Catalog: The Guide Star Catalog, Version 2.2 (GSC2.2) (STScI, 2001) |journal=VizieR Online Data Catalog |date=1 October 2001 |publisher=Space Telescope Science Institute |bibcode=2001yCat.1271....0S}}</ref>
<ref name = Ehrenreich2011>{{cite journal | last1 = Ehrenreich | first1 = D. | last2 = Désert | first2 = J.-M. | title = Mass-loss rates for transiting exoplanets | journal = Astronomy & Astrophysics | date = 20 April 2011 | volume = 529 | page = A136 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361/201016356 | s2cid = 119302960 | bibcode = 2011A&A...529A.136E | arxiv = 1103.0011 | doi-access = free}}</ref>
<ref name = Curti2003>{{cite journal |last1=Cutri |first1=R. M. |last2=Skrutskie |first2=M. F. |last3=van Dyk |first3=S. |last4=Beichman |first4=C. A. |last5=Carpenter |first5=J. M. |last6=Chester |first6=T. |last7=Cambresy |first7=L. |last8=Evans |first8=T. |last9=Fowler |first9=J. |last10=Gizis |first10=J. |last11=Howard |first11=E. |last12=Huchra |first12=J. |last13=Jarrett |first13=T. |last14=Kopan |first14=E. L. |last15=Kirkpatrick |first15=J. D. |last16=Light |first16=R. M. |last17=Marsh |first17=K. A. |last18=McCallon |first18=H. |last19=Schneider |first19=S. |last20=Stiening |first20=R. |last21=Sykes |first21=M. |last22=Weinberg |first22=M. |last23=Wheaton |first23=W. A. |last24=Wheelock |first24=S. |last25=Zacarias |first25=N. |title=VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003) |journal=VizieR Online Data Catalog |date=June 2003 |pages=II/246 |bibcode=2003yCat.2246....0C}}</ref>
<ref name="SIMBAD">{{Cite simbad|title = Lupus-TR 3|access-date = May 20, 2009}}</ref>
}}
== External links == * {{cite web | url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=Lupus-TR-3 | title=Lupus-TR-3 | work=Exoplanets | accessdate=2009-05-20 | archive-url=https://web.archive.org/web/20160303224322/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=Lupus-TR-3 | archive-date=2016-03-03 | url-status=dead }} * {{ cite journal | first5=Karen M. | last5=Lewis | first4=Brandon W. | last4=Tingley | first3=Penny D. | last3=Sackett | first2=David T. F. | last2=Weldrake | url=http://www.iop.org/EJ/abstract/1538-3881/137/5/4368 | author=Bayliss | title=The Lupus Transit Survey for Hot Jupiters: Results and Lessons | display-authors=etal | journal= The Astronomical Journal | date=2009 | volume=137 | issue=5 | pages=4368–4376 | doi=10.1088/0004-6256/137/5/4368 | bibcode=2009AJ....137.4368B|arxiv = 0903.5121 | s2cid=16189693 }}
{{Sky|15|30|18.67|-|42|58|41.5|8950}}
{{Stars of Lupus}}
Category:K-type main-sequence stars Category:Planetary systems with one confirmed planet Category:Planetary transit variables Category:Lupus (constellation)