HD 24040 b

{{Infobox planet

| name = HD 24040 b

| discoverer = Butler et al.

| discovery_site = California, USA

| discovered = March 12, 2006

| discovery_method = Doppler spectroscopy

| apsis = astron

| semimajor = {{val|4.637|0.067}} AU

| eccentricity = {{val|0.047|0.020}}

| period = {{val|3490|25}} d

| time_periastron = {{val|2456670|240}}

| arg_peri = {{val|67|24}}

| semi-amplitude = {{val|51.8|1.6}}

| star = HD 24040

}}

HD 24040 b is a long-period exoplanet taking approximately 3500 days to orbit at 4.6 astronomical units in an almost circular orbit. It has a minimum mass 4 times that of Jupiter.

Discovery

HD 24040b was discovered in 2006 based on observations made at the W. M. Keck Observatory in Hawaii. However, because the observations covered less than one complete orbit there were only weak constraints on the period and mass. The first reliable orbit for HD 24040b was obtained by astronomers at Haute-Provence Observatory in 2012 who combined the keck measurements with ones from the SOPHIE and ELODIE spectrographs. The most recent orbit published in 2015 added additional keck measurements and refined the orbital parameters.

References

{{Reflist|refs=

{{citation |doi=10.1051/0004-6361/201118419 |arxiv=1205.5835 |url=http://www.aanda.org/articles/aa/full_html/2012/09/aa18419-11/aa18419-11.html |title=The SOPHIE search for northern extrasolar planets V. Follow-up of ELODIE candidates: Jupiter-analogs around Sun-like stars |year=2012 |last1=Boisse |first1=Isabelle |last2=Pepe |first2=Francesco |last3=Perrier |first3=Christian |last4=Queloz |first4=Didier |last5=Bonfils |first5=Xavier |last6=Bouchy |first6=François |last7=Santos |first7=Nuno C. |last8=Arnold |first8=Luc |last9=Beuzit |first9=Jean-Luc |last10=Dìaz |first10=Rodrigo F. |last11=Delfosse |first11=Xavier |last12=Eggenberger |first12=Anne |last13=Ehrenreich |first13=David |last14=Forveille |first14=Thierry |last15=Hébrard |first15=Guillaume |last16=Lagrange |first16=Anne-Marie |last17=Lovis |first17=Christophe |last18=Mayor |first18=Michel |last19=Moutou |first19=Claire |last20=Naef |first20=Dominique |last21=Santerne |first21=Alexandre |last22=Ségransan |first22=Damien |last23=Sivan |first23=Jean-Pierre |last24=Udry |first24=Stéphane |journal=Astronomy and Astrophysics |volume=545 |pages=A55 |bibcode=2012A&A...545A..55B |s2cid=119109836 }}

{{cite journal | title=The California Planet Survey IV: A Planet Orbiting the Giant Star HD 145934 and Updates to Seven Systems with Long-period Planets | last1=Feng | first1=Y. Katherina | last2=Wright | first2=Jason T. | last3=Nelson | first3=Benjamin | last4=Wang | first4=Sharon X. | last5=Ford | first5=Eric B. | last6=Marcy | first6=Geoffrey W. | last7=Isaacson | first7=Howard | last8=Howard | first8=Andrew W. | display-authors=1 | journal=The Astrophysical Journal | volume=800 | issue=1 | at=22 | year=2015 | arxiv=1501.00633 | bibcode=2015ApJ...800...22F | doi=10.1088/0004-637X/800/1/22 | s2cid=56390823 }}

{{cite journal | title=Four New Exoplanets and Hints of Additional Substellar Companions to Exoplanet Host Stars | last1=Wright | first1=J. T. | last2=Marcy | first2=G. W. | last3=Fischer | first3=D. A | last4=Butler | first4=R. P. | last5=Vogt | first5=S. S. | last6=Tinney | first6=C. G. | last7=Jones | first7=H. R. A. | last8=Carter | first8=B. D. | last9=Johnson | first9=J. A. | last10=McCarthy | first10=C. | last11=Apps | first11=K. | display-authors=1 | journal=The Astrophysical Journal | volume=657 | issue=1 | pages=533–545 | year=2007 | arxiv=astro-ph/0611658 | bibcode=2007ApJ...657..533W | doi=10.1086/510553 | s2cid=35682784 }}

}}

External links

{{cite web | url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+24040 | title=HD 24040 | work=Exoplanets | access-date=2008-09-10 | archive-url=https://web.archive.org/web/20120219233746/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+24040 | archive-date=2012-02-19 | url-status=dead }}

Category:Giant planets

Category:Taurus (constellation)

Category:Exoplanets discovered in 2006

Category:Exoplanets detected by radial velocity