HD 164595 b

HD 164595 b is a confirmed exoplanet orbiting around a Sun-like star HD 164595 every 40 days some 94.36 light-years away. It was detected with the radial velocity technique with the SOPHIE echelle spectrograph. The planet has a minimal mass equivalent of 16 Earths.^[1][2]

HD 164595 b

Discovery
Discovered by	Courcol et al.
Discovery date	10 September 2015
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	0.23 AU (34,000,000 km)[1]
Eccentricity	0.0880+0.1200 −0.0660[1]
Orbital period (sidereal)	40.00±0.24[1] d
Star	HD 164595
Physical characteristics
Mass	16.14±2.72[1] M🜨

It is speculated to be a Neptune-like gassy planet incapable of supporting life.^[3][4] The planet has a minimal mass of 16 Earth masses.^[1]

Possible radio signal from star system

Main article: HD 164595

A recent (2016) radio signal at 11 GHz (2.7 cm wavelength) has been observed from the HD 164595 stellar system.^[5][6] It is unknown which planet of that stellar system is involved, if any. It could instead be gravitational lensing from a more distant source.^[6] SETI investigators are looking into it,^[6][7][8] but the chances of the signal being from an extraterrestrial civilization are considered slim, at best,"^[3] with SETI researcher Eric Korpela calling it "uninteresting".^[9]