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WASP-1b

{{Short description|Extrasolar planet in the Andromeda constellation}}

{{Infobox planet

| name = WASP-1b

| image = Exoplanet Comparison WASP-1 b.png

| caption = Size comparison of WASP-1b with Jupiter

| discoverer = Cameron et al. (SuperWASP
and SOPHIE)
{{flag|South Africa}}
and {{flag|France}}

| discovery_site = SAAO

| discovered = September 25, 2006

| discovery_method = Transit

| apsis = astron

| semimajor = 0.0382 (± 0.0013) AU

| eccentricity = 0

| period = 2.5199464 (± 8e-07) d

| inclination = 88.65 (± 0.55)

| star = WASP-1

| mean_radius = 1.484 {{±|0.06|0.09}} {{Jupiter radius|link=y}}

| mass = 0.86 ± 0.07 {{Jupiter mass|link=y}}

| density = {{cvt|476|kg/m3|g/cm3|lk=on|disp=out}}{{fact|date=July 2024}}

| surface_grav = {{cvt|12.5|m/s2|lk=on}}
1.27 g

| single_temperature = 1,800 K

}}

WASP-1b is an extrasolar planet orbiting the star WASP-1 located 1,300 light-years away in the constellation Andromeda.

Orbit and mass

Image:WASP-1 b rv.pdf

The planet's mass and radius indicate that it is a gas giant with a similar bulk composition to Jupiter. Unlike Jupiter, but similar to many other planets detected around other stars, WASP-1b is located very close to its star, and belongs to the class of planets known as hot Jupiters.

WASP-1 b was discovered via the transit method by SuperWASP, for which the star and planet are named. Follow-up radial velocity measurements confirmed the presence of an unseen companion, and allowed for the mass of WASP-1 b to be determined.

In 2018, it was discovered via observations of the Rossiter-McLaughlin effect that the orbit of WASP-1b is strongly misaligned with rotational axis of the star by 79.0{{±|4.3|4.5}} degrees, making it a nearly "polar" orbit.{{cite journal|arxiv=1011.5664|doi=10.1111/j.1365-2966.2011.18603.x|title=The spin-orbit angles of the transiting exoplanets WASP-1b, WASP-24b, WASP-38b and HAT-P-8b from Rossiter-Mc Laughlin observations★|year=2011|last1=Simpson|first1=E. K.|last2=Pollacco|first2=D.|last3=Cameron|first3=A. Collier|last4=Hébrard|first4=G.|last5=Anderson|first5=D. R.|last6=Barros|first6=S. C. C.|last7=Boisse|first7=I.|last8=Bouchy|first8=F.|last9=Faedi|first9=F.|last10=Gillon|first10=M.|last11=Hebb|first11=L.|last12=Keenan|first12=F. P.|last13=Miller|first13=G. R. M.|last14=Moutou|first14=C.|last15=Queloz|first15=D.|last16=Skillen|first16=I.|last17=Sorensen|first17=P.|last18=Stempels|first18=H. C.|last19=Triaud|first19=A.|last20=Watson|first20=C. A.|last21=Wilson|first21=P. A.|journal=Monthly Notices of the Royal Astronomical Society|volume=414|issue=4|pages=3023–3035|doi-access=free |bibcode=2011MNRAS.414.3023S|s2cid=46522188}}

{{clearleft}}

See also

References

{{Reflist|refs=

{{cite journal | title=WASP-1b and WASP-2b: two new transiting exoplanets detected with SuperWASP and SOPHIE | last1=Cameron | first1=A. Collier | last2=Bouchy | first2=F. | last3=Hébrard | first3=G. | last4=Maxted | first4=P. | last5=Pollacco | first5=D. | last6=Pont | first6=F. | last7=Skillen | first7=I. | last8=Smalley | first8=B. | last9=Street | first9=R. A. | last10=West | first10=R. G. | last11=Wilson | first11=D. M. | last12=Aigrain | first12=S. | last13=Christian | first13=D. J. | last14=Clarkson | first14=W. I. | last15=Enoch | first15=B. | last16=Evans | first16=A. | last17=Fitzsimmons | first17=A. | last18=Fleenor | first18=M. | last19=Gillon | first19=M. | last20=Haswell | first20=C. A. | last21=Hebb | first21=L. | last22=Hellier | first22=C. | last23=Hodgkin | first23=S. T. | last24=Horne | first24=K. | last25=Irwin | first25=J. | last26=Kane | first26=S. R. | last27=Keenan | first27=F. P. | last28=Loeillet | first28=B. | last29=Lister | first29=T. A. | last30=Mayor | first30=M. | display-authors=1 | journal=Monthly Notices of the Royal Astronomical Society | volume=375 | issue=3 | pages=951–957 | year=2007 | arxiv=astro-ph/0609688 | bibcode=2007MNRAS.375..951C | doi=10.1111/j.1365-2966.2006.11350.x | doi-access=free | s2cid=735515 }}

}}

Further reading

  • {{cite journal | title = Precise Radius Estimates for the Exoplanets WASP-1b and WASP-2b | journal = The Astrophysical Journal | volume=658 | issue=2 | year=2007 | pages=1322–1327 | doi = 10.1086/512008 | bibcode=2007ApJ...658.1322C|arxiv = astro-ph/0610589 | last1 = Charbonneau | first1 = David | last2 = Winn | first2 = Joshua N. | last3 = Everett | first3 = Mark E. | last4 = Latham | first4 = David W. | last5 = Holman | first5 = Matthew J. | last6 = Esquerdo | first6 = Gilbert A. | last7 = o’Donovan | first7 = Francis T. | s2cid = 14099767 }}
  • {{cite journal | title = Photometric follow-up of the transiting planet around WASP-1 | journal = Monthly Notices of the Royal Astronomical Society | volume=376 | issue=3 | year=2007 | pages=1296–1300 | doi = 10.1111/j.1365-2966.2007.11537.x | bibcode=2007MNRAS.376.1296S|arxiv = astro-ph/0610556 | last1 = Shporer | first1 = A. | last2 = Tamuz | first2 = O. | last3 = Zucker | first3 = S. | last4 = Mazeh | first4 = T. | doi-access = free | s2cid = 12694181 }}

External links

{{commonscat-inline|WASP-1 b|WASP-1b}}

  • {{cite encyclopedia | title=Planet WASP-1 b | url=https://exoplanet.eu/catalog/wasp_1_b--346/ | encyclopedia=Extrasolar Planets Encyclopaedia | access-date=2018-11-07}}
  • [http://news.bbc.co.uk/1/hi/sci/tech/5378562.stm BBC News article]
  • [http://wasp-planets.net/ WASP Planets]

{{Sky|00|20|40|+|31|59|24|1239}}

{{Stars of Andromeda}}

{{DEFAULTSORT:WASP-1b}}

Category:Exoplanets discovered by WASP

Category:Exoplanets discovered in 2006

Category:Giant planets

Category:Hot Jupiters

Category:Transiting exoplanets

Category:Andromeda (constellation)