HD 11506
Encyclopedia
HD 11506 is a yellow dwarf
star
in the constellation
Cetus
. It is 8th magnitude
and about 175.5 ly away.
was discovered orbiting the star by the N2K Consortium
using the doppler spectroscopy
method.This planet was announced by Debra Fischer
in the United States
in 2007. In 2009, the second planet HD 11506 c
was discovered by using Bayesian analysis.
Yellow dwarf
A G-type main-sequence star , often called a yellow dwarf, is a main-sequence star of spectral type G and luminosity class V. Such a star has about 0.8 to 1.2 solar masses and surface temperature of between 5,300 and 6,000 K., Tables VII, VIII...
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...
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....
Cetus
Cetus
Cetus is a constellation. Its name refers to Cetus, a sea monster in Greek mythology, although it is often called 'the whale' today. Cetus is located in the region of the sky that contains other water-related constellations such as Aquarius, Pisces, and Eridanus.-Ecliptic:Although Cetus is not...
. It is 8th 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...
and about 175.5 ly away.
Planetary system
The superjovian planet HD 11506 bHD 11506 b
HD 11506 b is an extrasolar planet that orbits the star HD 11506 176 light years away in the constellation of Cetus. This planet was discovered on April 10, 2007 by Debra Fischer, who used N2K Consortium in California, United States to detect wobbling of the star caused by the planet’s gravity....
was discovered orbiting the star by the N2K Consortium
N2K Consortium
The N2K Consortium is a collaborative multinational effort by American, Chilean and Japanese astronomers to find additional extrasolar planets around stars that are...
using the doppler spectroscopy
Doppler spectroscopy
Doppler spectroscopy, also known as radial velocity measurement, is a spectroscopic method for finding extrasolar planets. It involves the observation of Doppler shifts in the spectrum of the star around which the planet orbits....
method.This planet was announced by Debra Fischer
Debra Fischer
Debra A. Fischer is a professor of astronomy at Yale University. Fischer has co-authored over 100 papers on dwarf and sub-stellar mass objects in the galactic neighborhood, including many on extrasolar planets. She is a principal investigator with the N2K Consortium searching for exoplanets...
in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
in 2007. In 2009, the second planet HD 11506 c
HD 11506 c
HD 11506 c is an extrasolar planet located approximately 176 light years away in the constellation of Cetus, orbiting the 8th magnitude G-type main sequence star HD 11506. It is the second planet in this system discovered on February 18, 2009 by a method called Bayesian analysis. It has a minimum...
was discovered by using Bayesian analysis.