WASP-28b

{{Infobox planet

| name = WASP-28b

| image = Exoplanet Comparison WASP-28 b.png

| caption = Size comparison of WASP-28b with Jupiter.

| discovery_ref =

| discoverer = Wide Angle Search for Planets

| discovered = 2010

| discovery_method = Transit

| apsis = astron

| semimajor = {{val|0.0442|0.0010}} AU

| eccentricity = {{val|0.075|p=<}}

| period = {{val|3.40883495|0.00000015}} d

| inclination = 88.61 ± 0.67

| star = WASP-28

| mean_radius = {{val|1.319|0.028|0.026}} {{Jupiter radius|link=y}}

| mass = {{val|0.948|0.051|0.052}} {{Jupiter mass|link=y}}

| single_temperature = 1468 ± 37 K

}}

WASP-28b or K2-1b is an extrasolar planet discovered in 2010[https://web.archive.org/web/20100614103910/http://www.superwasp.org/documents/west2010_wasp28.pdf internet archive - WASP-28b: a hot Jupiter transiting a low-metallicity star] by the Wide Angle Search for Planets (WASP) project orbiting WASP-28, a magnitude 12 star also known as 1SWASP J233427.87-013448.1, 2MASS J23342787-0134482 and K2-1. Since it orbits its star very closely, the planet is a strongly irradiated hot Jupiter. As seen from the Earth, WASP-28b transits its host star every 3.41 days taking about 3 hours to do so.

The planet was observed by the Kepler space telescope during the K2 mission engineering campaign in February 2014 as part of an early science demonstration. It was also observed from December 2016 to March 2017 during K2's campaign 12 which allowed a refinement of the system parameters.

Internal structure

The planet seems to be a gas giant with a low core mass (<~10M(Earth)) and a low heavy elements content (Z<~0.2).

References

{{Reflist|refs=

{{cite journal | title=WASP-20b and WASP-28b: A hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars | url=https://www.aanda.org/articles/aa/full_html/2015/03/aa23591-14/aa23591-14.html | last1=Anderson | first1=D. R. | last2=Collier Cameron | first2=A. | last3=Hellier | first3=C. | last4=Lendl | first4=M. | last5=Lister | first5=T. A. | last6=Maxted | first6=P. F. L. | last7=Queloz | first7=D. | last8=Smalley | first8=B. | last9=Smith | first9=A. M. S. | last10=Triaud | first10=A. H. M. J. | last11=Brown | first11=D. J. A. | last12=Gillon | first12=M. | last13=Neveu-VanMalle | first13=M. | last14=Pepe | first14=F. | last15=Pollacco | first15=D. | last16=Ségransan | first16=D. | last17=Udry | first17=S. | last18=West | first18=R. G. | last19=Wheatley | first19=P. J. | display-authors=1 | journal=Astronomy and Astrophysics | volume=575 | article-number=A61 | year=2015 | pages= | arxiv=1402.1482 | bibcode=2015A&A...575A..61A | bibcode-access=free | doi=10.1051/0004-6361/201423591 | doi-access=free }}

{{cite journal | title=The K2 Mission: Characterization and Early Results | last1=Howell | first1=Steve B. | last2=Sobeck | first2=Charlie | last3=Haas | first3=Michael | last4=Still | first4=Martin | last5=Barclay | first5=Thomas | last6=Mullally | first6=Fergal | last7=Troeltzsch | first7=John | last8=Aigrain | first8=Suzanne | last9=Bryson | first9=Stephen T. | last10=Caldwell | first10=Doug | last11=Chaplin | first11=William J. | last12=Cochran | first12=William D. | last13=Huber | first13=Daniel | last14=Marcy | first14=Geoffrey W. | last15=Miglio | first15=Andrea | last16=Najita | first16=Joan R. | last17=Smith | first17=Marcie | last18=Twicken | first18=J. D. | last19=Fortney | first19=Jonathan J. | display-authors=1 | journal=Publications of the Astronomical Society of the Pacific | volume=126 | issue=938 | pages=398–408 | year=2014 | arxiv=1402.5163 | bibcode=2014PASP..126..398H | bibcode-access=free | doi=10.1086/676406 | doi-access=free }}

{{cite journal | title=K2 Looks Toward WASP-28 and WASP-151 | last1=Močnik | first1=T. | last2=Hellier | first2=C. | last3=Anderson | first3=D. R. | journal=Publications of the Astronomical Society of the Pacific | volume=132 | issue=1007 | article-number=014401 | year=2020 | page=014401 | arxiv=1710.08892 | bibcode=2020PASP..132a4401M | bibcode-access=free | doi=10.1088/1538-3873/ab5598 | doi-access=free }}

{{cite journal | last1=Wang | first1=Xian-Yu | last2=Wang | first2=Yong-Hao | last3=Wang | first3=Songhu | last4=Wu | first4=Zhen-Yu | last5=Rice | first5=Malena | last6=Zhou | first6=Xu | last7=Hinse | first7=Tobias C. | last8=Liu | first8=Hui-Gen | last9=Ma | first9=Bo | last10=Peng | first10=Xiyan | last11=Zhang | first11=Hui | last12=Yu | first12=Cong | last13=Zhou | first13=Ji-Lin | last14=Laughlin | first14=Gregory | display-authors=1 | title=Transiting Exoplanet Monitoring Project (TEMP). VI. The Homogeneous Refinement of System Parameters for 39 Transiting Hot Jupiters with 127 New Light Curves | journal=The Astrophysical Journal Supplement Series | date=1 July 2021 | volume=255 | issue=1 | page= | article-number=15 | arxiv=2105.14851 | bibcode=2021ApJS..255...15W | bibcode-access=free | doi=10.3847/1538-4365/ac0835 | doi-access=free | s2cid=235253975 }}

}}

External links

{{commonscat-inline|WASP-28 b|WASP-28b}}
[http://wasp-planets.net/ WASP Planets]

Category:Exoplanets discovered by WASP

Category:Exoplanets discovered in 2010

Category:Giant planets

Category:Hot Jupiters

Category:Transiting exoplanets