HD 164922 b

HD 164922 b
Discovery
Discovered byButler et al.[1]
Discovery siteCalifornia, USA
Discovery dateJuly 15, 2006
Radial velocity
Orbital characteristics
2.11 ± 0.13 AU (316,000,000 ± 19,000,000 km)
Eccentricity0.05 ± 0.14
1155 ± 23 d
2,411,100 ± 280
195
Semi-amplitude7.3 ± 1.2
StarHD 164922
Physical characteristics
~8 R🜨
Temperature159 K (−114 °C; −173 °F)[2]

HD 164922 b is an exoplanet orbiting the star HD 164922 about 72 light-years from Earth in the constellation Hercules. Its inclination is not known, and its true mass may be significantly greater than the radial velocity lower limit of 0.36 Jupiter masses. The planet also has a low eccentricity, unlike most other long period extrasolar planets – 0.05 – about the same as Jupiter and Saturn in the Solar System.[1] The exoplanet was found by using the radial velocity method, from radial-velocity measurements via observation of Doppler shifts in the spectrum of the planet's parent star.

  1. ^ a b Cite error: The named reference Butler2006 was invoked but never defined (see the help page).
  2. ^ Fulton, Benjamin J.; Howard, Andrew W.; Weiss, Lauren M.; Sinukoff, Evan; Petigura, Erik A.; Isaacson, Howard; Hirsch, Lea; Marcy, Geoffrey W.; Henry, Gregory W.; Grunblatt, Samuel K.; Huber, Daniel; Kaspar von Braun; Boyajian, Tabetha S.; Kane, Stephen R.; Wittrock, Justin; Horch, Elliott P.; Ciardi, David R.; Howell, Steve B.; Wright, Jason T.; Ford, Eric B. (2016). "Three Temperate Neptunes Orbiting Nearby Stars". The Astrophysical Journal. 830 (1): 46. arXiv:1607.00007. Bibcode:2016ApJ...830...46F. doi:10.3847/0004-637X/830/1/46. S2CID 36666883.