Imaginary Picture of Qatar-5 b

Display orbital revolution of Qatar-5 b around the hoststar Qatar-5
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Exoplanet Name : Qatar-5 b
Alternate Name :
Radius (Rjup / Re): 1.1070 (Rjup) 12.4084 (Rearth)
Mass (Mjup / Me): 4.3200 (Mjup) 1373.4922 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0413 (AU) 0.0413 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0079
Orbital Period(Observed/Estimated) 2.88 (Days Obs.) 2.88 (Days Est.)
Surface Gravity (G Earth) 8.9207
Star Radiation at Atmospheric Boundary: 909337.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1378.2 (K)
Blackbody T 0.3(K) 1294.3 (K)
Blackbody T 0.7(K) 1047.2 (K)
Tidally Locked Blackbody T 0.1(K) 1639.0 (K)
Tidally Locked Blackbody T 0.3(K) 1539.2 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : Qatar-5
Alternate Name : UCAC3 265-004681
Star Distance(LY) : 0.0
Stellar Radius(Rsun) : 1.1 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 5.5 (GY)
Temperature : 5747 (K)
Spectral type : G3
UV portion[%]: 7.7
Visible portion[%]: 44.6
IR portion[%]: 47.6
Metalicity : 0.4
Absolute Magnitude: 25.0
Apparent Magnitude: 22.0
Right Ascension(RA) 7.0542
Declination (DEC) 42.0614
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link
Qatar-5 b
Qatar-5 b

  • Qatar-5 b is an exoplanet orbiting the star Qatar-5. Its discovery was publicly announced on 2016.
  • The host star Qatar-5 has apparent magnitude of 22.0, with absolute magnitude of 25.0.
  • It is 1.1 times more massive and 1.1 times bigger compared with our Sun. The surface temperature is 5747 with its spectral types of G3
  • In this planetary system, the extrasolar planet Qatar-5 b orbits around the star Qatar-5 every 2.9 days with its orbital distance of 0.04 AU ( 6173904.1 km)
  • (Projected orbit of Qatar-5 b around its host star Qatar-5)


  • The Star Qatar-5 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.770 AU ( 115173556.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.064 AU ( 159199953.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.622 AU ( 242585498.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.386 AU ( 356975187.9 km)
  • Radiation at Planetary Boundary of Qatar-5 b : 909337.72 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Qatar-5)



  • Kopparapu Recent Venus for Star Qatar-5 distance : 0.799 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Qatar-5 distance : 1.012 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Qatar-5 distance : 0.978 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Qatar-5 distance : 1.072 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Qatar-5 distance : 1.789 AU
  • Kopparapu Outer Boundary for Early Mars for Star Qatar-5 distance : 1.887 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Qatar-5)



  • Original Kopparapu Recent Venus for Star Qatar-5 distance : 0.800 AU
  • Original Kopparapu Runaway Greenhouse for Star Qatar-5 distance : 1.040 AU
  • Original Kopparapu Moist Greenhouse for Star Qatar-5 distance : 1.059 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Qatar-5 distance : 1.821 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Qatar-5 distance : 1.893 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Qatar-5)



    (Position in Stellar Map of star Qatar-5 and its Exoplanet Qatar-5 b)



    (Zoomed position in Stellar Map of star Qatar-5 and its Exoplanet Qatar-5 b (zoom level 3))

    (Synthetic Spectrum of star Qatar-5*)
    *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