HD 45652 b
Encyclopedia
HD 45652 b is a gas giant
extrasolar planet
orbiting at only 0.23 AU
from the star HD 45652
, with an orbital period of 44 days. It has mass at least half that of Jupiter
. As it was detected using the radial velocity method, its true mass
is dependent on the inclination
of its orbit; if it's low, then the true mass will be larger. Also, its radius is not known. This planet was discovered by measurements taken by the ELODIE spectrograph
from 2005 and 2006, and later confirmed by CORALIE and SOPHIE
between 2006 and 2007. The discovery was announced in May 2008.
Gas giant
A gas giant is a large planet that is not primarily composed of rock or other solid matter. There are four gas giants in the Solar System: Jupiter, Saturn, Uranus, and Neptune...
extrasolar planet
Extrasolar planet
An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of such planets have been identified as of . It is now known that a substantial fraction of stars have planets, including perhaps half of all Sun-like stars...
orbiting at only 0.23 AU
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
from the star HD 45652
HD 45652
HD 45652 is a G8-K0 star located in the constellation Monoceros. It is approximately 118 light years from Earth with apparent magnitude 8.13....
, with an orbital period of 44 days. It has mass at least half that of Jupiter
Jupiter
Jupiter is the fifth planet from the Sun and the largest planet within the Solar System. It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined. Jupiter is classified as a gas giant along with Saturn,...
. As it was detected using the radial velocity method, its true mass
True mass
The term true mass is synonymous with the term mass, but is used in astronomy to differentiate the measured mass of a planet from the lower limit of mass usually obtained from radial velocity techniques...
is dependent on the inclination
Inclination
Inclination in general is the angle between a reference plane and another plane or axis of direction.-Orbits:The inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit...
of its orbit; if it's low, then the true mass will be larger. Also, its radius is not known. This planet was discovered by measurements taken by the ELODIE spectrograph
ELODIE spectrograph
ELODIE was an echelle type spectrograph installed at the Observatoire de Haute-Provence 1.93m reflector in south-eastern France for the . Its optical instrumentation was developed by André Baranne from the Marseille Observatory. The purpose of this instrument was extrasolar planet detection by the...
from 2005 and 2006, and later confirmed by CORALIE and SOPHIE
Sophie
Sophie is the French and German form of the name Sophia. In English speaking countries, Sophie has also been a diminutive of Sophia.Sophie and Sophy may refer to:-People:...
between 2006 and 2007. The discovery was announced in May 2008.