HD 164595 b

HD 164595 b
Exoplanet List of exoplanets
Parent star
Star HD 164595
Right ascension (α) 18h 00m 38.89s[1]
Declination (δ) +29° 34′ 34.9″[1]
Distance94.36+1.96
−2.02 ly
(28.93+0.60
−0.62 pc)
Spectral type G2V[1]
Mass (m) 0.990±0.030 M☉
Temperature (T) 5790±40 K
Metallicity [Fe/H] -0.040±0.080
Orbital elements
Semi-major axis(a) 0.23[1] AU
Eccentricity (e) 0.0880+0.1200
−0.0660[1]
Orbital period(P) 40.00±0.24[1] d
Physical characteristics
Mass(m)16.14±2.72[1] M⊕
Discovery information
Discovery date 10 September 2015
Discoverer(s) Courcol et al.
Discovery method Radial velocity
Discovery status Published

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 is believed to be a Neptune-like gassy planet incapable of supporting life.[2][3] The planet has a mass of 16 Earth masses.[1]

Possible radio signal from star system

Main article: HD 164595

A recent (2015) radio signal at 11 GHz (2.7 cm wavelength) has been observed from the HD 164595 stellar system.[4][5] It is unknown which planet of that stellar system is involved, if any. It could instead be gravitational lensing from a more distant source.[5] SETI investigators are looking into it,[5][6][7] but the chances of the signal being from an extra-terrestrial civilization are considered slim, at best.[2][8]

References

  1. 1 2 3 4 5 6 7 8 "HD 164595 b Confirmed Planet Overview Page". NASA. Retrieved 31 August 2016.
  2. 1 2 Plait, Phil (31 August 2016). "No, We Almost Certainly Did Not Detect an Alien Signal".
  3. ↑ Moody, Oliver (31 August 2016). "PAYWALL - Title => Signal from the stars could be ET phoning Earth". The Times. Retrieved 31 August 2016.
  4. ↑ Gilster, Paul (27 August 2016). "An Interesting SETI Candidate in Hercules". Centauri Dreams. Retrieved 29 August 2016.
  5. 1 2 3 Griffiths, James (30 August 2016). "Hear me now? 'Strong signal' from sun-like star sparks alien speculation". CNN. Retrieved 30 August 2016.
  6. ↑ 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.
  7. ↑ Staff (29 August 2016). "Mystery radio signal may be from distant star system — or a military transmitter". KurzweilAI. Retrieved 31 August 2016.
  8. ↑ Korpela, Eric (29 August 2016). "Uninteresting from a SETI point of view".
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