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HD 66428 b

{{short description|Long-period jovian exoplanet in the constellation of Monoceros}}

{{Infobox planet

| name = HD 66428 b

| discoverer = Butler et al.

| discovery_site = {{flagicon|United States}} California

| discovered = July 15, 2006

| discovery_method = Radial velocity

| orbit_ref =

| apsis = astron

| semimajor = {{val|3.395|0.141|0.157|ul=AU}}

| eccentricity = {{val|0.471|0.012}}

| period = {{val|6.214|0.015|0.016|ul=yr}}

| time_periastron = {{val|2450057.763|16.562|18.431}}

| arg_peri = {{val|185.689|1.688|1.596|u=deg}}

| semi-amplitude = {{val|54.441|1.035|1.167|ul=m/s}}

| star = HD 66428

| inclination = {{val|16.639|10.121|2.959|u=deg}}

| asc_node = {{val|299.391|8.486|8.219|u=deg}}

| physical_ref =

| mass = {{val|10.946|2.442|3.845|ul=Jupiter mass}}

}}

HD 66428 b is a long-period jovian exoplanet located approximately 174 light-years away in the constellation of Monoceros. It has a minimum mass of {{Jupiter mass|2.82|link=y}} and takes 1973 days or 5.402 years to orbit around its solar-type star HD 66428. The average distance is 3.18 AU, about half the distance between Mars and Jupiter. This planet is a so-called eccentric Jupiter with an orbital eccentricity of 0.465. At periastron, the distance is 1.70 AU and at apastron, the distance is 4.66 AU. In 2022, the inclination and true mass of HD 66428 b were measured via astrometry.

See also

References

{{Reflist|refs=

{{cite journal | title=Catalog of Nearby Exoplanets | last1=Butler | first1=R. P. | last2=Wright | first2=J. T. | last3=Marcy | first3=G. W. | last4=Fischer | first4=D. A. | 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=Penny | first11=A. J. | display-authors=1 | journal=The Astrophysical Journal | volume=646 | issue=1 | pages=505–522 | year=2006 | doi=10.1086/504701 | bibcode=2006ApJ...646..505B | arxiv=astro-ph/0607493 | s2cid=119067572 }}

{{cite journal |last1=Feng |first1=Fabo |last2=Butler |first2=R. Paul |display-authors=etal |date=August 2022 |title=3D Selection of 167 Substellar Companions to Nearby Stars |journal=The Astrophysical Journal Supplement Series |volume=262 |issue=21 |page=21 |doi=10.3847/1538-4365/ac7e57 |arxiv=2208.12720 |bibcode=2022ApJS..262...21F|s2cid=251864022 |doi-access=free }}

}}

External links

  • {{cite encyclopedia | url=https://exoplanet.eu/catalog/hd_66428_b--333/ | encyclopedia=Extrasolar Planets Encyclopaedia | title=Notes for planet HD 66428 b | access-date=2008-08-20}}
  • {{cite web | url=http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+66428 | title=HD 66428 | work=Exoplanets | accessdate=2008-08-20 | archive-url=https://web.archive.org/web/20091125025359/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HD+66428 | archive-date=2009-11-25 | url-status=dead }}

{{Sky|08|03|28.6652|-|01|09|45.752|179}}

Category:Monoceros

Category:Giant planets

Category:Exoplanets discovered in 2006

Category:Exoplanets detected by radial velocity

Category:Exoplanets detected by astrometry

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