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HD 164595 b

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HD 164595 b
Discovery
Discovered byCourcol et al.
Discovery date10 September 2015
Radial velocity
Orbital characteristics
0.23 AU (34,000,000 km)[1]
Eccentricity0.0880+0.1200
−0.0660[1]
40.00±0.24[1]d
StarHD 164595
Physical characteristics
Mass16.14±2.72[1]ME

HD 164595 bis a confirmedexoplanetorbiting around a Sun-like starHD 164595every 40 days some 94.36light-yearsaway. It was detected with theradial velocitytechnique with theSOPHIE echelle spectrograph.The planet has a minimal mass equivalent of 16Earths.[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.[1]

Possible radio signal from star system

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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 begravitational lensingfrom 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 researcherEric Korpelacalling it "uninteresting".[9]

References

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  1. ^abcdef"HD 164595 b Confirmed Planet Overview Page".NASA.Retrieved31 August2016.
  2. ^Courcol, Bastien; Bouchy, François; Pepe, Francesco; Santerne, Alexandre; Delfosse, Xavier; Arnold, Luc; Astudillo-Defru, Nicola; Boisse, Isabelle; Bonfils, Xavier (1 September 2015)."The SOPHIE search for northern extrasolar planets".Astronomy & Astrophysics.581:A38.arXiv:1506.07144.Bibcode:2015A&A...581A..38C.doi:10.1051/0004-6361/201526329.ISSN0004-6361.S2CID119181352.
  3. ^abPlait, Phil (31 August 2016)."No, We Almost Certainly Did Not Detect an Alien Signal".Slate.
  4. ^Moody, Oliver (31 August 2016)."PAYWALL - Title => Signal from the stars could be ET phoning Earth".The Times.Retrieved31 August2016.
  5. ^Gilster, Paul (27 August 2016)."An Interesting SETI Candidate in Hercules".Centauri Dreams.Retrieved29 August2016.
  6. ^abcGriffiths, James (30 August 2016)."Hear me now? 'Strong signal' from sun-like star sparks alien speculation".CNN.Retrieved30 August2016.
  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. ^Staff (29 August 2016)."Mystery radio signal may be from distant star system – or a military transmitter".KurzweilAI.Retrieved31 August2016.
  9. ^Korpela, Eric (29 August 2016)."Uninteresting from a SETI point of view".
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