HD 142415 b
Encyclopedia
HD 142415 b is an exoplanet with the semi-amplitude
of 51.3 ± 2.3 m/s. This indicates the minimum mass
of 1.69 Jupiter mass
, an orbital period
of 386.3 day
s, and the semi-major axis
of 1.07 astronomical unit
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
on 30 June 2003 by Mayor
, who used the CORALIE spectrograph
.
Amplitude
Amplitude is the magnitude of change in the oscillating variable with each oscillation within an oscillating system. For example, sound waves in air are oscillations in atmospheric pressure and their amplitudes are proportional to the change in pressure during one oscillation...
of 51.3 ± 2.3 m/s. This indicates the minimum mass
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...
of 1.69 Jupiter mass
Jupiter mass
Jupiter mass , is the unit of mass equal to the total mass of the planet Jupiter . Jupiter mass is used to describe masses of the gas giants, such as the outer planets and extrasolar planets. It is also used in describing brown dwarfs....
, an orbital period
Orbital period
The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of...
of 386.3 day
Day
A day is a unit of time, commonly defined as an interval equal to 24 hours. It also can mean that portion of the full day during which a location is illuminated by the light of the sun...
s, and the semi-major axis
Semi-major axis
The major axis of an ellipse is its longest diameter, a line that runs through the centre and both foci, its ends being at the widest points of the shape...
of 1.07 astronomical unit
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
s based from its stellar mass. The wild, oval pathed wobble of the star
Stellar wobble
Stellar wobble is a variation in the position of a star due to the gravitational influence of another body orbiting it. Stellar wobble is visible as a Doppler shift in the star's spectrum or as a motion of the star in the plane of the sky...
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
La Silla Observatory is an astronomical observatory in Chile with three telescopes built and operated by the European Southern Observatory organisation, and several others are partly maintained by ESO...
on 30 June 2003 by Mayor
Michel Mayor
Dr. Michel G. E. Mayor is a Swiss astrophysicist and professor emeritus at the University of Geneva's Department of Astronomy. He formally retired in 2007, but remains active as a researcher at the Observatory of Geneva...
, who used the CORALIE spectrograph
CORALIE spectrograph
The CORALIE spectrograph is an echelle type spectrograph used for astronomy. This instrument used with a telescope to measure star spectra for the Doppler effect to detect the presence of extrasolar planets by the radial velocity method...
.
See also
- HD 10647 bHD 10647 bHD 10647 b, also catalogued as q1 Eridani b, is an extrasolar planet approximately 57 light-years away in the constellation of Eridanus . The planet is a mid-Jovian that orbits 103% farther from the star than Earth to the Sun. It takes about 33 months to orbit with semi-amplitude of 17.9 m/s.-...
- HD 111232 bHD 111232 bHD 111232 b is an extrasolar planet that orbits almost 2 AU with a mass of at least 6.8 times that of Jupiter. This planet was discovered in the La Silla Observatory by Michel Mayor using the CORALIE spectrograph on 30 June 2003, along with six other planets, including HD 41004 Ab, HD 65216 b, HD...
- HD 141937 bHD 141937 bHD 141937 b is an extrasolar planet discovered in August 2002 with mass of 9.7 times Jupiter. The mass is minimum since the inclination of the orbit is unknown, which will probably be a brown dwarf instead if the true mass is known...
- HD 142022 AbHD 142022 AbHD 142022 Ab is an exoplanet discovered by the radial velocity method by Eggenberger et al. in 2005 after finding that HD 142022 A is wobbling which indicated the presence of a massive planet, designating as HD 142022 Ab, with mass of 4.5 times Jupiter...
- HD 169830 cHD 169830 cHD 169830 c is an extrasolar planet, most likely a gas giant, three and a half times as massive as Jupiter. It is likely to be smaller in radius but slightly larger than Jupiter. Its orbit is eccentric, with a period of 1830 days....
- HD 216770 bHD 216770 bHD 216770 b is an extrasolar planet orbiting the star HD 216770. It has a mass about two thirds that of Jupiter, largest planet in our Solar system. But unlike the gas giants in the Solar system, it orbits in a very eccentric orbit around the star...
- HD 41004 AbHD 41004 AbHD 41004 Ab is an extrasolar planet approximately 139 light years away in the constellation of Pictor. It has mass 2.56 MJ planet orbiting at a distance of 1.70 AU from HD 41004 A. The planet's orbit is highly eccentric caused by the companion star HD 41004 B and the distance ranges from 0.44 to...
- HD 65216 bHD 65216 bHD 65216 b is an extrasolar planet located approximately 116 light-years away in the constellation of Carina, orbiting the star HD 65216. This planet was discovered by the Geneva Extrasolar Planet Search Team in 2003. Like most planet candidates so far, it was detected with the radial velocity...