Imaginary Picture of HD 1666 b
/
Exoplanet Name : HD 1666 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 6.4300 (Mjup) 2044.3413 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.9400 (AU) 0.9400 (AU Est.)
Eccentricity : 0.6300
Orbital Period(Yrs) 0.7392
Orbital Period(Observed/Estimated) 270.00 (Days Obs.) 271.79 (Days Est.)
Star Radiation at Atmospheric Boundary: 8232.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 425.1 (K)
Blackbody T 0.3(K) 399.2 (K)
Blackbody T 0.7(K) 323.0 (K)
Tidally Locked Blackbody T 0.1(K) 505.6 (K)
Tidally Locked Blackbody T 0.3(K) 474.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : HD 1666
Alternate Name :
Star Distance(LY) : 385.1
Stellar Radius(Rsun) : 1.9 (Rsun Measured)
Stellar Mass(Msun) : 1.5 (Msun Measured) 1.5 (Msun Estimated)
Star Age : 1.8 (GY)
Temperature : 6317 (K)
Spectral type : F7 V
Metalicity : 0.4
Absolute Magnitude: 2.8
Apparent Magnitude: 8.2
Right Ascension(RA) 5.2181
Declination (DEC) -19.9311
Hubble Space Telescope Guide Star Catalog (GSC) ID 05842-00736
Discovered by
Discovery Paper - Authors "Hiroki Harakawa, Bun¥¹¡£¥»­Æi Sato, Masashi Omiya, Debra . Fischer, Yasunori Hori, Shigeru Ida, Eiji Kambe, Michitoshi Yoshida, Hideyuki Izumiura, Hisashi Koyano, Shogo Nagayama, Yasuhiro Shimizu, Norio Okada, Kiichi Okita, Akihiro Sakamoto, and Tomoyasu Yamamuro"
Discovery Paper - Title "FIVE NEW EXOPLANETS ORBITING THREE METAL-RICH, MASSIVE STARS: TWO-PLANET SYSTEMS INCLUDING LONG-PERIOD PLANETS, AND AN ECCENTRIC PLANET"
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+1666+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%201666%20b/
HD 1666 b
HD 1666 b

  • HD 1666 b is an exoplanet orbiting the star HD 1666, located about 385.1 light-years (118.1 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star HD 1666 has apparent magnitude of 8.2, with absolute magnitude of 2.8.
  • It is 1.5 times more massive and 1.9 times bigger compared with our Sun. The surface temperature is 6317 with its spectral types of F7 V
  • In this planetary system, the extrasolar planet HD 1666 b orbits around the star HD 1666 every 270.0 days with its orbital distance of 0.94 AU ( 140621998.5 km)
  • (Projected orbit of HD 1666 b around its host star HD 1666)


  • The Star HD 1666 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.668 AU ( 249595743.8 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.306 AU ( 345006545.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.514 AU ( 525713624.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.171 AU ( 773610629.0 km)
  • Radiation at Planetary Boundary of HD 1666 b : 8232.04 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 1666)



  • Kopparapu Recent Venus for Star HD 1666 distance : 1.674 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 1666 distance : 2.120 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 1666 distance : 2.047 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 1666 distance : 2.243 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 1666 distance : 3.698 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 1666 distance : 3.901 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 1666)



  • Original Kopparapu Recent Venus for Star HD 1666 distance : 1.695 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 1666 distance : 2.174 AU
  • Original Kopparapu Moist Greenhouse for Star HD 1666 distance : 2.243 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 1666 distance : 3.765 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 1666 distance : 3.915 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 1666)



    (Position in Stellar Map of star HD 1666 and its Exoplanet HD 1666 b)



    (Zoomed position in Stellar Map of star HD 1666 and its Exoplanet HD 1666 b (zoom level 3))