Imaginary Picture of NGTS-7A b

Display orbital revolution of NGTS-7A b around the hoststar NGTS-7A
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Exoplanet Name : NGTS-7A b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.0700 (Rjup) 11.9936 (Rearth)
Mass (Mjup / Me): 62.0000 (Mjup) 19712.1560 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0139 (AU) 0.0139 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0019
Orbital Period(Observed/Estimated) 0.68 (Days Obs.) 0.59 (Days Est.)
Surface Gravity (G Earth) 137.0354
Star Radiation at Atmospheric Boundary: 300659.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1045.1 (K)
Blackbody T 0.3(K) 981.5 (K)
Blackbody T 0.7(K) 794.1 (K)
Tidally Locked Blackbody T 0.1(K) 1242.9 (K)
Tidally Locked Blackbody T 0.3(K) 1167.2 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : NGTS-7A
Alternate Name :
Star Distance(LY) : 497.9
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.1 (GY)
Temperature : 3359 (K)
Spectral type : M
UV portion[%]: 0.2
Visible portion[%]: 12.4
IR portion[%]: 87.4
Metalicity : 0.0
Absolute Magnitude: 9.6
Apparent Magnitude: 15.5
Right Ascension(RA) 352.5217
Declination (DEC) -38.9699
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
NGTS-7A b
NGTS-7A b

  • NGTS-7A b is an exoplanet orbiting the star NGTS-7A, located about 497.9 light-years (152.7 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star NGTS-7A has apparent magnitude of 15.5, with absolute magnitude of 9.6.
  • It is 1.0 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3359 with its spectral types of M
  • In this planetary system, the extrasolar planet NGTS-7A b orbits around the star NGTS-7A every 0.7 days with its orbital distance of 0.01 AU ( 2079410.4 km)
  • (Projected orbit of NGTS-7A b around its host star NGTS-7A)


  • The Star NGTS-7A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.149 AU ( 22305294.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.206 AU ( 30831745.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.314 AU ( 46980757.3 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.462 AU ( 69134242.4 km)
  • Radiation at Planetary Boundary of NGTS-7A b : 300659.48 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star NGTS-7A)



  • Kopparapu Recent Venus for Star NGTS-7A distance : 0.169 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star NGTS-7A distance : 0.214 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star NGTS-7A distance : 0.206 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star NGTS-7A distance : 0.227 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star NGTS-7A distance : 0.418 AU
  • Kopparapu Outer Boundary for Early Mars for Star NGTS-7A distance : 0.441 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star NGTS-7A)



  • Original Kopparapu Recent Venus for Star NGTS-7A distance : 0.168 AU
  • Original Kopparapu Runaway Greenhouse for Star NGTS-7A distance : 0.221 AU
  • Original Kopparapu Moist Greenhouse for Star NGTS-7A distance : 0.222 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star NGTS-7A distance : 0.425 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star NGTS-7A distance : 0.442 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star NGTS-7A)



    (Position in Stellar Map of star NGTS-7A and its Exoplanet NGTS-7A b)



    (Zoomed position in Stellar Map of star NGTS-7A and its Exoplanet NGTS-7A b (zoom level 3))

    (Synthetic Spectrum of star NGTS-7A*)
    *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