Orbital elements | ||
---|---|---|
Semimajor axis | (a) | 0.46 AU |
Eccentricity | (e) | 0.55 |
Orbital period | (P) | 108.55 d |
Argument of periastron |
(ω) | 55.2° |
Time of periastron | (T0) | 2,451,189.3 JD |
Semi-amplitude | (K) | 1398.5 m/s |
Physical characteristics | ||
Mass | (m) | >46 MJ |
Radius | (r) | >1.4 RJ |
Discovery information | ||
Discovery date | 2001 | |
Discoverer(s) | Tinney et al. | |
Detection method | Doppler Spectroscopy | |
Discovery site | Australia | |
Discovery status | Published |
HD 164427 b is a brown dwarf with a minimum mass of 46 times that of Jupiter. It orbits at nearly half an astronomical unit or Earth-to-Sun distance away from its star (HD 164427). The angular separation between a brown dwarf and a yellow dwarf as viewed from Earth is 11.76 Milliarcseconds. It takes 108.55 Earth days to orbit eccentrically around HD 164427. It has a very high semi-amplitude of almost 1400 m/s, because this is a very massive object which exerts strong gravitational pull on its tugging star.
Read more about this topic: HD 164427