HIP 70849 b

{{Short description|Extrasolar planet in the constellation Lupus}} {{Infobox planet | name = [[Hipparcos#Published catalogues|HIP]] 70849 b  | discoverer = Segransan ''et al.''<ref name="Ségransan2011"/> | discovery_site = [[La Silla Observatory]] | discovered = October 19, 2009<ref name="eso0939"/> | discovery_method = [[radial velocity method|radial velocity]] ([[HARPS]])   | orbit_ref = <ref name="Philipot2023"/> | apsis = astron | semimajor = {{val|3.99|0.06|0.07|ul=AU}} | eccentricity = {{val|0.65|0.02|0.01}} | period = {{convert|3649|±|18|d|yr|lk=on}} | inclination = {{val|96|16|u=deg}} | asc_node = {{val|35|6|u=deg}} | arg_peri = {{val|182|1|u=deg}} | star = [[HIP 70849]]  | physical_ref = <ref name="Philipot2023"/> | mass = {{val|4.5|0.4|0.3|ul=Jupiter mass}}   }} '''HIP 70849 b''' is an [[extrasolar planet]] which orbits the [[K-type star|K-type]] [[main sequence]] [[star]] [[HIP 70849]], located approximately 79 [[light year]]s away in the [[constellation]] [[Lupus (constellation)|Lupus]]. This planet was detected by [[HARPS]] and announced on October 19, 2009, together with 31 other planets.<ref name="eso0939"/> Its parameters were initially poorly constrained, estimated to have a [[minimum mass]] of {{Jupiter mass|3-15|link=y}} and take anywhere from 5-90 years to orbit the star at a [[semimajor axis]] of 4.5-36 [[astronomical unit|AU]], with the [[orbital eccentricity|eccentricity]] and [[inclination]] being unknown.<ref name="Ségransan2011"/> This was significantly updated in a December 2022 paper, which found much better constrained parameters including a high eccentricity,<ref name="Šubjak2022"/> and in a January 2023 paper which determined the planet's inclination and true mass via [[astrometry]].<ref name="Philipot2023"/>

== References == {{Reflist|refs=

<ref name="eso0939">{{cite web |url=https://www.eso.org/public/news/eso0939/ |title=32 New Exoplanets Found |date=19 October 2009 |publisher=[[European Southern Observatory|ESO]] |access-date=4 January 2023}}</ref>

<ref name="Ségransan2011">{{cite journal | title=The HARPS search for southern extra-solar planets. XXIX. Four new planets in orbit around the moderately active dwarfs HD 63765, HD 104067, HD 125595, and HIP 70849 | url=http://www.aanda.org/articles/aa/full_html/2011/11/aa13580-09/aa13580-09.html | last1=Ségransan | first1=D. | last2=Mayor | first2=M. | last3=Udry | first3=S. | last4=Lovis | first4=C. | last5=Benz | first5=W. | last6=Bouchy | first6=F. | last7=Lo Curto | first7=G. | last8=Mordasini | first8=C. | last9=Moutou | first9=C. | last10=Naef | first10=D. | last11=Pepe | first11=F. | last12=Queloz | first12=D. | last13=Santos | first13=N. | display-authors=1 | journal=Astronomy and Astrophysics | volume=535 | at=A54 | date=2011 | arxiv=1107.0339 | bibcode=2011A&A...535A..54S | doi=10.1051/0004-6361/200913580 | s2cid=119197766 }}</ref>

<ref name="Šubjak2022">{{cite journal |last1=Šubjak |first1=J. |last2=Lodieu |first2=N. |display-authors=etal |title=Search for planets around stars with wide brown dwarfs |journal=[[Astronomy & Astrophysics]] |year=2023 |volume= 671|issue= |pages= A10|doi= 10.1051/0004-6361/202244238|arxiv=2212.03757|bibcode=2023A&A...671A..10S |s2cid=254366726 }}</ref>

<ref name="Philipot2023">{{cite journal |last1=Philipot |first1=F. |last2=Lagrange |first2=A.-M. |display-authors=etal |arxiv=2301.01263 |title=Updated characterization of long-period single companion by combining radial velocity, relative astrometry, and absolute astrometry |journal=Astronomy & Astrophysics |date=January 2023|volume=670 |pages=A65 |doi=10.1051/0004-6361/202245396 |bibcode=2023A&A...670A..65P |s2cid=255393653 }}</ref>

}}

[[Category:Exoplanets discovered in 2009]] [[Category:Exoplanets detected by radial velocity]] [[Category:Exoplanets detected by astrometry]] [[Category:Giant planets]] [[Category:Lupus (constellation)]]