{{Short description|Super-Earth orbiting TOI-1452}} {{Use mdy dates|date=September 2022}} {{Infobox planet | name = TOI-1452 b <!-- DISCOVERY -->| discoverer = Cadieux, Charles et al.; International Team<ref name="CadieuxHébrard2022" /> | discovery_site = [[Université de Montréal]]<ref name="CadieuxHébrard2022" /> | discovered = June 2022<ref name="CadieuxHébrard2022" /> | discovery_method = <!-- DESIGNATIONS --> <!-- ORBITAL -->| apsis = | extrasolarplanet = yes | semimajor = {{val|0.061|0.003}} [[astronomical unit|AU]] | eccentricity = 0 | period = 11 days | inclination = {{val|89.77|0.16|ul=°}} | arg_peri = 90 | star = [[TOI-1452]] <!-- PHYS CHARS -->| physical_ref = <ref name="CadieuxHébrard2022" /> | mean_radius = 1.672±0.07 {{Earth radius|link=yes}} | mass = 4.82±1.3 {{Earth mass|sym=y|link=yes}} | density = {{val|5.6|1.8|1.6}} g/cm<sup>3</sup> | surface_grav = | single_temperature = {{val|326|7|ul=K}} ({{val|53|7|ul=°C}}) }} '''TOI-1452 b''' is a confirmed [[super-Earth]] [[exoplanet]], possibly a [[ocean world|water world]], orbiting a [[Red dwarf|red-dwarf star]] TOI-1452 about 100 light-years away in the [[Draco constellation]].<ref>{{Cite web |last=Program |first=By Pat Brennan, NASA's Exoplanet Exploration |title=Discovery Alert: Intriguing New 'Super-Earth' Could Get a Closer Look |url=https://exoplanets.nasa.gov/news/1710/discovery-alert-intriguing-new-super-earth-could-get-a-closer-look/ |access-date=2022-08-27 |website=Exoplanet Exploration: Planets Beyond our Solar System}}</ref><ref>{{Cite web |title=The Extrasolar Planet Encyclopaedia — TOI-1452 b |url=https://exoplanet.eu/catalog/toi_1452_b--8371/ |work=[[Extrasolar Planets Encyclopaedia]] |access-date=2022-08-27 }}</ref> The exoplanet is about 70% larger in diameter than Earth, and roughly five times as massive.<ref>{{Cite web |last=Cowing |first=Keith |date=2022-08-24 |title=TOI-1452 b: An Extrasolar World Covered In Water? |url=https://astrobiology.com/2022/08/toi-1452-b-an-extrasolar-world-covered-in-water.html |access-date=2022-08-27 |website=Astrobiology |language=en-US}}</ref>
==System== The '''TOI-1452''' star system is 99 light-years away from Earth,<ref name="StellarCatalog">{{Cite web |title=TOI-1452 Star Information |url=https://www.stellarcatalog.com/stars/toi-1452 |website=Stellar Catalog |access-date=2023-09-14}}</ref> located in the constellation of [[Draco_(constellation)|Draco]]. It is a binary pair of dim red dwarf stars separated by only 96 [[Astronomical unit|astronomical units]] (AU). A notable feature of this system is the presence of an exoplanet around one of the stars, designated as TOI-1452 b.<ref name="OceanWorld">{{Cite web |title=Discovery of Ocean World with the CFHT |url=https://www.cfht.hawaii.edu/en/news/OceanWorld/ |website=Canada-France-Hawaii Telescope |access-date=2023-09-14}}</ref> It is two M4 dwarf stars that were observed by [[Transiting Exoplanet Survey Satellite|TESS]] as a priority, since they are on the [[cool dwarf list]], a list of high-priority orange-red and red dwarf stars, that was uploaded to TESS. It is a flare star, with a flare observed by TESS where the star brightened by 5%. The secondary star is often distinguished from the first with the name "'''TOI-1760'''".<ref>{{Cite journal |last1=Cadieux |first1=Charles |last2=Doyon |first2=René |last3=Plotnykov |first3=Mykhaylo |last4=Hébrard |first4=Guillaume |last5=Jahandar |first5=Farbod |last6=Artigau |first6=Étienne |last7=Valencia |first7=Diana |last8=Cook |first8=Neil J. |last9=Martioli |first9=Eder |last10=Vandal |first10=Thomas |last11=Donati |first11=Jean-François |last12=Cloutier |first12=Ryan |last13=Narita |first13=Norio |last14=Fukui |first14=Akihiko |last15=Hirano |first15=Teruyuki |date=2022-08-12 |title=TOI-1452 b: SPIRou and TESS Reveal a Super-Earth in a Temperate Orbit Transiting an M4 Dwarf |journal=The Astronomical Journal |volume=164 |issue=3 |pages=96 |doi=10.3847/1538-3881/ac7cea |issn=0004-6256 |doi-access=free |arxiv=2208.06333 }}</ref> [[File:TOI-1452b.jpg|thumb|Artist's impression and size comparison of TOI-1452b and Earth]]
==Discovery== TOI-1452 b was discovered by an international team led by astronomers from the [[Université de Montréal]],<ref name="UM-20220824">{{cite news |last=DePresse |first=Salle |title=An extrasolar world covered in water? |url=https://nouvelles.umontreal.ca/en/article/2022/08/24/an-extrasolar-world-covered-in-water/ |date=24 August 2022 |work=[[Université de Montréal]] |accessdate=2 September 2022 }}</ref><ref name="NASA029229824">{{cite news |last=Brennan |first=Pat |title=Discovery Alert: Intriguing New 'Super-Earth' Could Get a Closer Look |url=https://exoplanets.nasa.gov/news/1710/discovery-alert-intriguing-new-super-earth-could-get-a-closer-look/ |date=24 August 2022 |work=[[NASA]] |accessdate=3 September 2022 }}</ref> using data from NASA’s Transiting Exoplanet Survey Satellite ([[Transiting Exoplanet Survey Satellite|TESS]]).<ref name="CadieuxHébrard2022">{{cite journal|last1=Cadieux|first1=Charles|last2=Doyon|first2=René|last3=Plotnykov|first3=Mykhaylo|last4=Hébrard|first4=Guillaume|last5=Jahandar|first5=Farbod|last6=Artigau|first6=Étienne|last7=Valencia|first7=Diana|last8=Cook|first8=Neil J.|last9=Martioli|first9=Eder|last10=Vandal|first10=Thomas|last11=Donati|first11=Jean-François|last12=Cloutier|first12=Ryan|last13=Narita|first13=Norio|last14=Fukui|first14=Akihiko|last15=Hirano|first15=Teruyuki|last16=Bouchy|first16=François|last17=Cowan|first17=Nicolas B.|last18=Gonzales|first18=Erica J.|last19=Ciardi|first19=David R.|last20=Stassun|first20=Keivan G.|last21=Arnold|first21=Luc|last22=Benneke|first22=Björn|last23=Boisse|first23=Isabelle|last24=Bonfils|first24=Xavier|last25=Carmona|first25=Andrés|last26=Cortés-Zuleta|first26=Pía|last27=Delfosse|first27=Xavier|last28=Forveille|first28=Thierry|last29=Fouqué|first29=Pascal|last30=da Silva|first30=João Gomes|last31=Jenkins|first31=Jon M.|last32=Kiefer|first32=Flavien|last33=Kóspál|first33=Ágnes|last34=Lafrenière|first34=David|last35=Martins|first35=Jorge H. C.|last36=Moutou|first36=Claire|last37=do Nascimento|first37=J.-D.|last38=Ould-Elhkim|first38=Merwan|last39=Pelletier|first39=Stefan|last40=Twicken|first40=Joseph D.|last41=Bouma|first41=Luke G.|last42=Cartwright|first42=Scott|last43=Darveau-Bernier|first43=Antoine|last44=Grankin|first44=Konstantin|last45=Ikoma|first45=Masahiro|last46=Kagetani|first46=Taiki|last47=Kawauchi|first47=Kiyoe|last48=Kodama|first48=Takanori|last49=Kotani|first49=Takayuki|last50=Latham|first50=David W.|last51=Menou|first51=Kristen|last52=Ricker|first52=George|last53=Seager|first53=Sara|last54=Tamura|first54=Motohide|last55=Vanderspek|first55=Roland|last56=Watanabe|display-authors=2|first56=Noriharu|title=TOI-1452 b: SPIRou and TESS Reveal a Super-Earth in a Temperate Orbit Transiting an M4 Dwarf|journal=The Astronomical Journal|publisher=American Astronomical Society|volume=164:96|issue=3|date=27 June 2022 |publication-date=12 August 2022|arxiv=2208.06333|doi=10.3847/1538-3881/ac7cea|bibcode=2022AJ....164...96C|doi-access=free|pages=28pp}}</ref><ref>{{Cite web |last=Anderson |first=Natali |date=2022-08-24 |title=Water-World Super-Earth Found in Nearby Binary System {{!}} Sci.News |url=https://www.sci.news/astronomy/toi-1452b-water-world-super-earth-11128.html |access-date=2022-08-27 |website=Sci.News: Breaking Science News |language=en-US}}</ref> The discovery was first reported in June 2022.<ref name="CadieuxHébrard2022" />
== References == {{Reflist}} {{Sky|19|20|42.0|+|73|11|20|42|100}} {{Draco (constellation)}} {{Portal bar|Astronomy|Stars|Outer space}}
[[Category:Draco (constellation)]] [[Category:Exoplanets discovered in 2022]] [[Category:Super-Earths in the habitable zone]] [[Category:Transiting exoplanets]] [[Category:Exoplanets discovered by TESS]] [[Category:Extraterrestrial water]] [[Category:Giant planets in the habitable zone]] [[Category:Near-Earth-sized exoplanets in the habitable zone]]