HD 162020 is an orange dwarf star in Scorpius constellation with a brown dwarf companion.

HD 162020 b

HD 162020 b is a brown dwarf with mass 15.0 M_J. The mass is minimum since inclination is not known. This planetar orbits very close to the star at a distance of 0.075 AU. Despite of this, it has an eccentric orbit of 27.7%. The distance from the star ranges from 0.054 to 0.096 AU. It has an extremely high semi-amplitude of 1813 m/s.

In 2002, Stephen Udry discovered HD 162020 b taking place in California. Udry was the same person who discovered two super-Earth planets orbiting around Gliese 581.

References

• Udry et al. (2002). "The CORALIE survey for southern extra-solar planets". Astronomy & Astrophysics 390 267–279. Retrieved on December 21., 2007.

External links

• Notes for star HD 162020. The Extrasolar Planets Encyclopaedia. Retrieved on December 21., 2007.
• Notes for planet HD 162020 b. The Extrasolar Planets Encyclopaedia. Retrieved on December 21., 2007.
• HD 162020 – Orange Main Sequence Star. Extrasolar Visions. Retrieved on December 21., 2007.
• HD 162020 B -- Brown dwarf. Extrasolar Visions. Retrieved on December 21., 2007.
• HD 162020 -- Star. SIMBAD. Retrieved on December 21., 2007.
• HD 162020 b -- Extra-solar Planet Candidate. SIMBAD. Retrieved on December 21., 2007.