HD 210702 b

{{short description|Extrasolar planet in the constellation Pegasus}}

{{Infobox planet

| name = HD 210702 b

| discovery_ref =

| discoverer = Johnson et al.

| discovery_site = Lick Observatory and Keck Observatory

| discovered = 2007

| discovery_method = Doppler spectroscopy

| orbit_ref =

| semimajor = {{val|1.148|0.057|ul=AU}}

| eccentricity = {{val|0.028|0.034}}

| period = {{val|354.10|0.70|u=days}}

| time_periastron = {{val|2454042|64|ul=JD}}

| arg_peri = {{val|189|66|u=º}}

| semi-amplitude = {{val|37.8|2.0|ul=m/s}}

| star = HD 210702

| physical_ref =

| mass = {{val|1.808|0.097|p=≥|ul=Jupiter mass}}

}}

HD 210702 b is an exoplanet located approximately 177 light-years away in the constellation of Pegasus, orbiting the star HD 210702. This planet, together with HD 175541 b and HD 192699 b, are planets around intermediate mass stars that were announced in April 2007 by Johnson et al. It has at least twice the mass of Jupiter and it orbits with semimajor axis of 1.17 AU, corresponding to a period of 341.1 days.

Planets around intermediate mass subgiants provide clues for the history of formation and migration of planets around A-type stars.

References

{{Reflist|refs=

{{cite journal | title=Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants | last1=Johnson | first1=John Asher | last2=Fischer | first2=Debra A. | last3=Marcy | first3=Geoffrey W. | last4=Wright | first4=Jason T. | last5=Driscoll | first5=Peter | last6=Butler | first6=R. Paul | last7=Hekker | first7=Saskia | last8=Reffert | first8=Sabine | last9=Vogt | first9=Steven S. | display-authors=1 | journal=The Astrophysical Journal | volume=665 | issue=1 | pages=785–793 | year=2007 | arxiv=0704.2455 | bibcode=2007ApJ...665..785J | bibcode-access=free | doi=10.1086/519677 | doi-access=free }}

{{cite journal | title=Retired A Stars and Their Companions. VIII. 15 New Planetary Signals around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts | last1=Luhn | first1=Jacob K. | last2=Bastien | first2=Fabienne A. | last3=Wright | first3=Jason T. | last4=Johnson | first4=John A. | last5=Howard | first5=Andrew W. | last6=Isaacson | first6=Howard | display-authors=1 | journal=The Astronomical Journal | volume=157 | issue=4 | at=149 | year=2019 | arxiv=1811.03043 | bibcode=2019AJ....157..149L | doi=10.3847/1538-3881/aaf5d0 | s2cid=102486961 | doi-access=free }}

}}

{{cite web | url=http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%208461 | title=HR 8461 | work=webviz.u-strasbg.fr/ | accessdate=}}

External links

{{cite web | url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+210702 | title=HD 210702 | work=Exoplanets | access-date=2008-10-25 | archive-url=https://web.archive.org/web/20091125020242/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+210702 | archive-date=2009-11-25 | url-status=dead }}

Category:Exoplanets discovered in 2007

Category:Giant planets

Category:Pegasus (constellation)

Category:Exoplanets detected by radial velocity

HD 210702 b

See also

References

External links