BD-17°63 b
Encyclopedia
BD-17°63 b is an extrasolar planet
located approximately 113 light-year
s away in the constellation
of Cetus, orbiting the 10th magnitude
K-type main sequence
star
BD-17°63
. This planet
has a minimum mass
of 5.1 MJ
and orbits at a distance of 1.34 astronomical unit
s from the star. The distance ranges from 0.62 AU to 2.06 AU, corresponding to the eccentricity of 0.54. One revolution takes about 656 days.
This planet was discovered on October 26, 2008 by Moutou et al. using the HARPS spectrograph on ESO’s 3.6 meter telescope installed at La Silla Observatory
in Atacama desert
, Chile
.
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...
located approximately 113 light-year
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...
s away in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
of Cetus, orbiting the 10th magnitude
Apparent magnitude
The apparent magnitude of a celestial body is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere...
K-type main sequence
Main sequence
The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. These color-magnitude plots are known as Hertzsprung–Russell diagrams after their co-developers, Ejnar Hertzsprung and Henry Norris Russell...
star
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
BD-17°63
BD-17°63
|- bgcolor="#FFFAFA"BD-17°63 is an low-mass K type star in the southern constellation Cetus. It is a 9th magnitude star at a distance of about 116 light years from Earth.-Planetary system:...
. This planet
Planet
A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.The term planet is ancient, with ties to history, science,...
has a 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 5.1 MJ
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....
and orbits at a distance of 1.34 astronomical unit
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
s from the star. The distance ranges from 0.62 AU to 2.06 AU, corresponding to the eccentricity of 0.54. One revolution takes about 656 days.
This planet was discovered on October 26, 2008 by Moutou et al. using the HARPS spectrograph on ESO’s 3.6 meter telescope installed at 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...
in Atacama desert
Atacama Desert
The Atacama Desert is a plateau in South America, covering a strip of land on the Pacific coast, west of the Andes mountains. It is, according to NASA, National Geographic and many other publications, the driest desert in the world...
, Chile
Chile
Chile ,officially the Republic of Chile , is a country in South America occupying a long, narrow coastal strip between the Andes mountains to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far...
.
See also
- HD 131664HD 131664HD 131664 is an 8th magnitude G-type main sequence star located approximately 181 light-years away in the constellation of Apus.On October 26, 2008, a brown dwarf was discovered along with five other planets...
- HD 143361 bHD 143361 bHD 143361 b is an extrasolar planet located approximately 194 light-years away in the constellation of Norma, orbiting the 9th magnitude G-type main sequence star HD 143361. This planet has a minimum mass of 3.0 times that of Jupiter. Because the inclination is not known, the true mass is not known...
- HD 145377 bHD 145377 bHD 145377 b is an extrasolar planet located approximately 188 light-years away in the constellation of Scorpius, orbiting the 8th magnitude G-type main sequence star HD 145377. This planet orbits at a distance of 0.45 astronomical units and takes 104 days to revolve around the star with an...
- HD 153950 bHD 153950 bHD 153950 b is an extrasolar planet located approximately 162 light-years away in the constellation of Scorpius, orbiting the 7th magnitude F-type main sequence star HD 153950. This planet has mass about 2.73 times that of Jupiter, but because the inclination is not known, the mass value is only...
- HD 20868 bHD 20868 bHD 20868 b is an extrasolar planet located approximately 159 light-years away in the constellation of Fornax, orbiting the 10th magnitude K-type subgiant star HD 20868. This planet has a minimum mass of 1.99 times more than Jupiter and orbits at a distance of 0.947 AU...
- HD 43848HD 43848HD 43848 is a 9th magnitude G-type main sequence star located approximately 121 light-years away in the constellation of Columba. The star is smaller and less massive than the Sun....
- HD 48265 bHD 48265 bHD 48265 b is an extrasolar planet located approximately 285 light-years away in the constellation of Puppis, orbiting the 8th magnitude G-type main sequence star HD 48265. This planet has a minimum mass of 1.2 times that of Jupiter. Because the inclination is not known, the true mass is not known...
- HD 73267 bHD 73267 bHD 73267 b is an extrasolar planet located approximately 179 light-years away in the constellation of Pyxis, orbiting the 9th magnitude G-type main sequence star HD 73267...