HD 164595 b explained

HD 164595 b
Discoverer:	Courcol et al.
Discovered:	10 September 2015
Discovery Method:	Radial velocity
Apsis:	astron
Semimajor:	0.23AU
Period:	40.00±0.24 d
Mass:	16.14±2.72

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]}

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

Possible radio signal from star system

See 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. SETI investigators are looking into it,^{[7] [8]} but the chances of the signal being from an extraterrestrial civilization are considered slim, at best," with SETI researcher Eric Korpela calling it "uninteresting".^[9]

Notes and References

1. Web site: HD 164595 b Confirmed Planet Overview Page. NASA. 31 August 2016.
2. 10.1051/0004-6361/201526329 . Courcol . Bastien . Bouchy . François . Pepe . Francesco . Santerne . Alexandre . Delfosse . Xavier . Arnold . Luc . Astudillo-Defru . Nicola . Boisse . Isabelle . Bonfils . Xavier . 2015-09-01 . The SOPHIE search for northern extrasolar planets . Astronomy & Astrophysics . en . 581 . A38 . 0004-6361 . 1506.07144 . 2015A&A...581A..38C . 119181352 .
3. No, We Almost Certainly Did Not Detect an Alien Signal. Plait. Phil. Slate . 31 August 2016.
4. News: Moody . Oliver . PAYWALL - Title => Signal from the stars could be ET phoning Earth . 31 August 2016 . . 31 August 2016 .
5. Web site: An Interesting SETI Candidate in Hercules . Centauri Dreams . 27 August 2016 . 29 August 2016 . Gilster, Paul.
6. Web site: Griffiths . James . Hear me now? 'Strong signal' from sun-like star sparks alien speculation . 30 August 2016 . . 30 August 2016 .
7. SETI observations on the RATAN-600 telescope in 2015 and detection of a strong signal in the direction of HD 164595 Bursov N., Filippova L., Filippov V., Gindilis L., Maccone C. et al. 2016 | in " IAA SETI Permanent Committee", Guadalajara, Mexico.
8. Web site: Staff . Mystery radio signal may be from distant star system – or a military transmitter . 29 August 2016 . . 31 August 2016 .
9. Web site: Korpela . Eric . Uninteresting from a SETI point of view . 29 August 2016 .