Imaginary Picture of iot Dra b

Display orbital revolution of iot Dra b around the hoststar iot Dra
/
Exoplanet Name : iot Dra b
Alternate Name : "Edasich b, 27 Dra b, HIP 75458 b, HD 137759 b"
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 16.4000 (Mjup) 5214.1832 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.4480 (AU) 1.4480 (AU Est.)
Eccentricity : 0.7008
Orbital Period(Yrs) 1.3986
Orbital Period(Observed/Estimated) 510.86 (Days Obs.) 537.87 (Days Est.)
Surface Gravity (G Earth) 50.3551
Star Radiation at Atmospheric Boundary: 37408.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 620.7 (K)
Blackbody T 0.3(K) 582.9 (K)
Blackbody T 0.7(K) 471.6 (K)
Tidally Locked Blackbody T 0.1(K) 738.1 (K)
Tidally Locked Blackbody T 0.3(K) 693.2 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : iot Dra
Alternate Name : "Edasich, 12 Dra, HD 137759, HIP 75458"
Star Distance(LY) : 102.7
Stellar Radius(Rsun) : 12.8 (Rsun Measured)
Stellar Mass(Msun) : 1.4 (Msun Measured) 1.6 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4445 (K)
Spectral type : K2 III
UV portion[%]: 1.4
Visible portion[%]: 30.2
IR portion[%]: 68.4
Metalicity : 0.1
Absolute Magnitude: 0.8
Apparent Magnitude: 3.3
Right Ascension(RA) 231.2292
Declination (DEC) 58.9658
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK
Open Exoplanet Database Link
iot Dra b
iot Dra b

  • iot Dra b is an exoplanet orbiting the star iot Dra, located about 102.7 light-years (31.5 pc) away from Solar System. Its discovery was publicly announced on 2002.
  • The host star iot Dra has apparent magnitude of 3.3, with absolute magnitude of 0.8.
  • It is 1.4 times more massive and 12.8 times bigger compared with our Sun. The surface temperature is 4445 with its spectral types of K2 III
  • In this planetary system, the extrasolar planet iot Dra b orbits around the star iot Dra every 510.9 days with its orbital distance of 1.45 AU ( 216617716.8 km)
  • (Projected orbit of iot Dra b around its host star iot Dra)


  • The Star iot Dra 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 5.479 AU ( 819618236.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 7.573 AU ( 1132926594.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 11.540 AU ( 1726329413.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 16.981 AU ( 2540369357.7 km)
  • Radiation at Planetary Boundary of iot Dra b : 37408.88 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star iot Dra)



  • Kopparapu Recent Venus for Star iot Dra distance : 6.063 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star iot Dra distance : 7.675 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star iot Dra distance : 7.413 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star iot Dra distance : 8.142 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star iot Dra distance : 14.252 AU
  • Kopparapu Outer Boundary for Early Mars for Star iot Dra distance : 15.035 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star iot Dra)



  • Original Kopparapu Recent Venus for Star iot Dra distance : 5.982 AU
  • Original Kopparapu Runaway Greenhouse for Star iot Dra distance : 7.925 AU
  • Original Kopparapu Moist Greenhouse for Star iot Dra distance : 7.915 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star iot Dra distance : 14.484 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star iot Dra distance : 15.063 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star iot Dra)



    (Position in Stellar Map of star iot Dra and its Exoplanet iot Dra b)



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

    (Synthetic Spectrum of star iot Dra*)
    *Yamashiki YA et al. 2019 ApJ 881 114
    MUSCLES Paper I - France et al. 2016 ApJ 820 89
    MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
    MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102