WASP-159

{{Starbox begin

| name = WASP-159

}}

{{Starbox observe

| epoch = J2000.0

| constell = Caelum

| ra = {{RA|04|32|32.75581}}

| dec = {{DEC|−38|58|05.9529}}

| appmag_v = 12.84{{±|0.24}}

}}

{{Starbox character

| type = subgiant

| class = F9

| b-v = −0.21

}}

{{starbox astrometry

| radial_v = 35.16{{±|0.01}}

| prop_mo_ra = −0.586

| prop_mo_dec = +5.347

| pm_footnote =

| parallax = 1.3723

| p_error = 0.0098

| parallax_footnote =

}}

{{Starbox detail

| source =

| mass = {{val|1.41|0.12}}

| radius = {{val|2.11|0.10}}

| luminosity = 4.674{{±|0.064|0.053}}

| temperature = {{val|6120|140|fmt=commas}}

| metal_fe = {{val|+0.22|0.12}}

| gravity = {{val|3.94|0.04}}

| age_gyr = {{val|3.40|0.95}}

| rotational_velocity = {{val|5.7|0.4}}

}}

{{Starbox catalog

| names = {{odlist|TOI=1903}}

}}

{{Starbox reference

| Simbad = WASP-159

| NSTED = WASP-159

| EPE = WASP-159

}}

WASP-159 is a star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 12.84, making it readily visible in telescopes with an aperture of at least four inches, but not to the naked eye. The star is located relatively far at a distance of 2,380 light-years based on recent parallax measurements from the Gaia spacecraft, but it is receding with a heliocentric radial velocity of {{val|35.2|ul=km/s}}.

WASP-159 has a stellar classification of F9 indicating that it is a late F-type star. It appears to be ceasing hydrogen fusion at its core and evolving towards the red giant branch. It has 1.41 times the Sun's mass and 2.11 times the radius of the Sun. It radiates 4.674 times the luminosity of the Sun from its photosphere at an effective temperature of {{val|6120|ul=K|fmt=commas}}, giving it a whitish-yellow hue when viewed in a telescope. WASP-159 is metal enriched with an iron abundance 166% that of the Sun, and it is estimated to be 3.4 billion years old.

Planetary system

In 2019, SuperWASP discovered a transiting exoplanet orbiting the star after spectral and radial velocity observations. WASP-159b is a "bloated" hot Jupiter that takes roughly 3.8 days to revolve around its host star in a circular orbit.

{{Orbitbox planet begin

| name = WASP-159

| table_ref =

}}

{{Orbitbox planet

| mass = {{val|0.55|0.08}}

| exoplanet = b

| semimajor = 0.0538{{±|0.0015}} | period = {{val|3.8404008|0.0000063|0.0000064|fmt=commas}}

| eccentricity = 0.00 (fixed) | inclination = {{val|88.1|1.4}}

| radius={{val|1.38|0.09}}

}}

References

{{Reflist|refs=

{{cite journal |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. |title=The Tycho-2 catalogue of the 2.5 million brightest stars |journal=Astronomy and Astrophysics |date=1 March 2000 |volume=355 |pages=L27–L30 |bibcode=2000A&A...355L..27H |issn=0004-6361}}

{{cite journal |last1=Hellier |first1=Coel |last2=Anderson |first2=D. R. |last3=Bouchy |first3=F. |last4=Burdanov |first4=A. |last5=Collier Cameron |first5=A. |last6=Delrez |first6=L. |last7=Gillon |first7=M. |last8=Jehin |first8=E. |last9=Lendl |first9=M. |last10=Nielsen |first10=L. D. |last11=Maxted |first11=P. F. L. |last12=Pepe |first12=F. |last13=Pollacco |first13=D. |last14=Queloz |first14=D. |last15=Ségransan |first15=D. |last16=Smalley |first16=B. |last17=Triaud |first17=A. H. M. J. |last18=Udry |first18=S. |last19=West |first19=R. G. |title=New transiting hot Jupiters discovered by WASP-South, Euler/CORALIE, and TRAPPIST-South |journal=Monthly Notices of the Royal Astronomical Society |date=1 January 2019 |volume=482 |issue=1 |pages=1379–1391 |doi=10.1093/mnras/sty2741 |doi-access=free |arxiv=1803.02224 |bibcode=2019MNRAS.482.1379H |issn=0035-8711}}

}}

Category:F-type subgiants

Category:Caelum

Category:Planetary systems with one confirmed planet

Category:Hot Jupiters