Rho Coronae Borealis b

Rho Coronae Borealis b ( ρ Coronae Borealis b ) is the original name for a suspected exoplanet that is said to orbit the yellow dwarf Rho Coronae Borealis every 39.8449 days . The object was determined in 1997 using the radial velocity method by Robert W. Noyes et al. discovered. Due to its initially only roughly estimated mass , it was initially assumed that it was a gas planet . Measurements with the help of the astrometric satellite Hipparcos in 2001 showed, however, that the mass of the "planet" was determined to be far too low due to an incorrectly estimated orbital inclination. According to Hipparcos, the actual mass of the object is 167 Jupiter masses, according to which it must be a very faint red dwarf star with a probability bordering on certainty.

Circulation and mass

This red dwarf star orbits its star at a distance of approx. 0.2 astronomical units with an eccentricity of 0.06.

Web links

• The exoplanet in the "Encyclopedia of Extrasolar Planets"
• The planet at Planet.ch