HD 142415 b is an
exoplanet with the semi-
amplitude
The amplitude of a periodic variable is a measure of its change in a single period (such as time or spatial period). The amplitude of a non-periodic signal is its magnitude compared with a reference value. There are various definitions of am ...
of 51.3 ± 2.3
m/s. This indicates the
minimum mass
In astronomy, minimum mass is the lower-bound calculated mass of observed objects such as planets, stars and binary systems, nebulae, and black holes.
Minimum mass is a widely cited statistic for extrasolar planets detected by the radial veloci ...
of 1.69
Jupiter mass
Jupiter mass, also called Jovian mass, is the unit of mass equal to the total mass of the planet Jupiter. This value may refer to the mass of the planet alone, or the mass of the entire Jovian system to include the moons of Jupiter. Jupiter is by ...
, an
orbital period
The orbital period (also revolution period) is the amount of time a given astronomical object takes to complete one orbit around another object. In astronomy, it usually applies to planets or asteroids orbiting the Sun, moons orbiting planets ...
of 386.3
days, and the
semi-major axis of 1.07
astronomical unit
The astronomical unit (symbol: au, or or AU) is a unit of length, roughly the distance from Earth to the Sun and approximately equal to or 8.3 light-minutes. The actual distance from Earth to the Sun varies by about 3% as Earth orbits ...
s based from its stellar mass. The wild, oval pathed
wobble of the star used by
Doppler spectrometer indicates that the orbit of the planet is highly eccentric at around 50%.
The planet was discovered in
La Silla Observatory
La Silla Observatory is an astronomical observatory in Chile with three telescopes built and operated by the European Southern Observatory (ESO). Several other telescopes are located at the site and are partly maintained by ESO. The observatory is ...
on 30 June 2003 by
Mayor
In many countries, a mayor is the highest-ranking official in a municipal government such as that of a city or a town. Worldwide, there is a wide variance in local laws and customs regarding the powers and responsibilities of a mayor as well ...
, who used the
CORALIE spectrograph
Leonhard Euler Telescope, or the Swiss EULER Telescope, is a national, fully automatic reflecting telescope, built and operated by the Geneva Observatory. It is located at an altitude of at ESO's La Silla Observatory site in the Chilean Norte ...
.
See also
*
HD 10647 b
*
HD 111232 b
*
HD 141937 b
*
HD 142022 Ab
*
HD 169830 c
*
HD 216770 b
*
HD 41004 Ab
HD 41004 Ab is an extrasolar planet approximately 139 light years away in the constellation of Pictor. It has mass 2.56 MJ planet
A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available t ...
*
HD 65216 b
References
External links
*
Exoplanets discovered in 2003
Giant planets
Norma (constellation)
Exoplanets detected by radial velocity
{{extrasolar-planet-stub