{{Short description|G-type main-sequence star}} {{Starbox begin | name = HIP 67522 }} {{Starbox observe | epoch = [[J2000]] | constell = [[Centaurus]]<ref name=xhip/> | ra = {{RA|13|50|06.280}}<ref name=GaiaDR3/> | dec = {{DEC|-40|50|08.88}}<ref name=GaiaDR3/> | appmag_v = 9.80{{±|0.03}}<ref name=tycho2/> }} {{Starbox character | type = [[Main sequence]]<ref name=Rizzuto2020/> | class = G0V<ref name=sacy/> }} {{Starbox astrometry | radial_v = {{val|8.26|2.19}}<ref name=GaiaDR3/> | prop_mo_ra = −28.907 | prop_mo_dec = −22.248 | pm_footnote = <ref name=GaiaDR3/> | parallax = 8.0170 | p_error = 0.0182 | parallax_footnote = <ref name=GaiaDR3/> }} {{Starbox detail | source = <ref name=Rizzuto2020/> | mass = 1.22{{±|0.05}} | radius = 1.38{{±|0.06}} | luminosity = 1.75{{±|0.09}} | temperature = 5,675{{±|75}} | rotation = 1.418{{±|0.016}} days | rotational_velocity = 54.2{{±|0.7}} | age_myr = 17{{±|2}} }} {{Starbox catalog | names = {{odlist | CD=−40 8189 | HD=120411 | HIP=67522 | TIC=166527623 | TOI=6551}}<ref name=SIMBAD/> }} {{Starbox reference | Simbad = HIP+67522 | NSTED = HIP-67522 }} {{Starbox end}}
'''HIP 67522''' is a [[G-type main-sequence star|G-type main sequence]] star located at a distance of {{convert|407|ly|pc|lk=on|abbr=off}} away in the constellation of [[Centaurus]]. Its [[visual magnitude]] of 9.8 makes it much too faint to be seen by the unaided eye. It is slightly larger than the Sun (1.38 {{solar radius}}) but cooler (5,675 K versus 5,772 K for the Sun). It is also very young being only around 17 million years old. It has two exoplanets orbiting it.<ref name=Rizzuto2020/>
== Planetary system == Two [[exoplanet]]s, [[HIP 67522 b]] and HIP 67522 c, are known to orbit the star and transit its face as seen from Earth. Their orbital periods are much less than [[Mercury (planet)|Mercury]]'s 88 days around the Sun, being 6.96 days for ''b'' and 14.33 days for ''c''.<ref>{{cite web|url=https://exoplanetarchive.ipac.caltech.edu/overview/HIP%2067522|title=HIP 67522 Overview}}</ref>
Detections of frequent flaring of the star during the transit phase of the innermost planet (HIP 67522b) suggest that interacts with the stars magnetic field producing the high rate of flares.<ref>{{Cite journal |last1=Ilin |first1=Ekaterina |last2=Vedantham |first2=Harish K. |last3=Poppenhäger |first3=Katja |last4=Bloot |first4=Sanne |last5=Callingham |first5=Joseph R. |last6=Brandeker |first6=Alexis |last7=Chakraborty |first7=Hritam |date=2025-07-02 |title=Close-in planet induces flares on its host star |url=https://www.nature.com/articles/s41586-025-09236-z |journal=Nature |language=en |pages=1–4 |doi=10.1038/s41586-025-09236-z |pmid=40604272 |issn=1476-4687|url-access=subscription |hdl=11370/f8c9e02a-5259-4e35-9a51-2934897a6744 |hdl-access=free }}</ref>
{{Orbitbox planet begin | table_ref = <ref name=Barber2024/><ref name=thao/> }} {{Orbitbox planet | exoplanet = [[HIP 67522 b|b]] | mass = {{val|0.0434|0.0031}} | radius = {{val|0.891|0.021|0.02}} | semimajor = {{val|0.0748|0.0016|0.0018}} | period = {{val|6.9594731|(22)}} | eccentricity = {{val|0.064|0.187|0.049}} | inclination = {{val|89.88|1.08|0.93}} }} {{Orbitbox planet | exoplanet = c | mass = | radius = {{val|0.708|0.031|0.032}} | semimajor = {{val|0.1228|0.0042|0.0053}} | period = {{val|14.334892|(12)}} | eccentricity = {{val|0.077|0.195|0.056}} | inclination = {{val|89.2|1.75|0.64}} }} {{Orbitbox end}}
==References== {{Reflist|refs=
<ref name=SIMBAD>{{cite simbad|title=HIP 67522|access-date=2024-12-22}}</ref>
<ref name=GaiaDR3>{{Cite Gaia DR3|6113920619134019456}}</ref>
<ref name=Rizzuto2020>{{cite journal|last=Rizzuto|first=Aaron C.|collaboration=13|date=22 June 2020|title=TESS Hunt for Young and Maturing Exoplanets (THYME). II. A 17 Myr Old Transiting Hot Jupiter in the Sco-Cen Association|journal=The Astronomical Journal|volume=160|issue=1|page=33|doi=10.3847/1538-3881/ab94b7|doi-access=free |arxiv=2005.00013 |bibcode=2020AJ....160...33R }}</ref>
<ref name=Barber2024>{{cite journal |last1=Barber |first1=Madyson G. |last2=Thao |first2=Pa Chia |display-authors=etal |date=September 2024 |title=TESS Investigation—Demographics of Young Exoplanets (TI-DYE). II. A Second Giant Planet in the 17 Myr System HIP 67522 |journal=[[The Astrophysical Journal Letters]] |volume=973 |issue=1 |pages=L30 |doi=10.3847/2041-8213/ad77d9 |doi-access=free |arxiv=2407.04763 |bibcode=2024ApJ...973L..30B}}</ref>
<ref name=xhip>{{cite journal |bibcode=2012AstL...38..331A |title=XHIP: An extended hipparcos compilation |last1=Anderson |first1=E. |last2=Francis |first2=Ch. |journal=Astronomy Letters |date=2012 |volume=38 |issue=5 |page=331 |doi=10.1134/S1063773712050015 |arxiv=1108.4971 }}</ref>
<ref name=tycho2>{{cite journal |bibcode=2000A&A...355L..27H |title=The Tycho-2 catalogue of the 2.5 million brightest stars |last1=Høg |first1=E. |last2=Fabricius |first2=C. |last3=Makarov |first3=V. V. |last4=Urban |first4=S. |last5=Corbin |first5=T. |last6=Wycoff |first6=G. |last7=Bastian |first7=U. |last8=Schwekendiek |first8=P. |last9=Wicenec |first9=A. |journal=Astronomy and Astrophysics |date=2000 |volume=355 }}</ref>
<ref name=sacy>{{cite journal |bibcode=2006A&A...460..695T |title=Search for associations containing young stars (SACY). I. Sample and searching method |last1=Torres |first1=C. A. O. |last2=Quast |first2=G. R. |last3=Da Silva |first3=L. |last4=de la Reza |first4=R. |last5=Melo |first5=C. H. F. |last6=Sterzik |first6=M. |journal=Astronomy and Astrophysics |date=2006 |volume=460 |issue=3 |page=695 |doi=10.1051/0004-6361:20065602 |arxiv=astro-ph/0609258 }}</ref>
<ref name=thao>{{Cite journal |last1=Thao |first1=Pa Chia |last2=Mann |first2=Andrew W. |last3=Feinstein |first3=Adina D. |last4=Gao |first4=Peter |last5=Thorngren |first5=Daniel |last6=Rotman |first6=Yoav |last7=Welbanks |first7=Luis |last8=Brown |first8=Alexander |last9=Duvvuri |first9=Girish M. |last10=France |first10=Kevin |last11=Longo |first11=Isabella |last12=Sandoval |first12=Angeli |last13=Schneider |first13=P. Christian |last14=Wilson |first14=David J. |last15=Youngblood |first15=Allison |date=2024-12-01 |title=The Featherweight Giant: Unraveling the Atmosphere of a 17 Myr Planet with JWST |journal=The Astronomical Journal |volume=168 |issue=6 |pages=297 |arxiv=2409.16355 |bibcode=2024AJ....168..297T |doi=10.3847/1538-3881/ad81d7 |doi-access=free |issn=0004-6256}}</ref>
}}
==External links== *[https://eos.org/articles/exoplanet-triggers-stellar-flares-and-hastens-its-demise Exoplanet Triggers Stellar Flares and Hastens Its Demise], 5 August 2025. [[Eos (magazine)]]: https://doi.org/10.1029/2025EO250284
{{Centaurus}}
[[Category:Centaurus]] [[Category:G-type main-sequence stars]] [[Category:Planetary systems with two confirmed planets]] [[Category:Hipparcos objects|067522]] [[Category:Henry Draper Catalogue objects|120411]] [[Category:Durchmusterung objects|CD-40 08189]] [[Category:TESS Objects of Interest|6551]]