Imaginary Picture of NGTS-1 b

Display orbital revolution of NGTS-1 b around the hoststar NGTS-1
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Exoplanet Name : NGTS-1 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.3300 (Rjup) 14.9080 (Rearth)
Mass (Mjup / Me): 0.8120 (Mjup) 258.1657 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0326 (AU) 0.0326 (AU Est.)
Eccentricity : 0.0160
Orbital Period(Yrs) 0.0072
Orbital Period(Observed/Estimated) 2.65 (Days Obs.) 2.74 (Days Est.)
Surface Gravity (G Earth) 1.1616
Star Radiation at Atmospheric Boundary: 89094.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 771.1 (K)
Blackbody T 0.3(K) 724.1 (K)
Blackbody T 0.7(K) 585.9 (K)
Tidally Locked Blackbody T 0.1(K) 917.0 (K)
Tidally Locked Blackbody T 0.3(K) 861.1 (K)
Size Class: Super-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 : NGTS-1
Alternate Name :
Star Distance(LY) : 730.6
Stellar Radius(Rsun) : 0.6 (Rsun Measured)
Stellar Mass(Msun) : 0.6 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3916 (K)
Spectral type : M05
UV portion[%]: 0.6
Visible portion[%]: 22.2
IR portion[%]: 77.2
Metalicity : 0.0
Absolute Magnitude: 15.2
Apparent Magnitude: 22.0
Right Ascension(RA) 82.7167
Declination (DEC) -36.6308
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGTS-1&submit=SIMBAD+search
Open Exoplanet Database Link
NGTS-1 b
NGTS-1 b

  • NGTS-1 b is an exoplanet orbiting the star NGTS-1, located about 730.6 light-years (224.0 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star NGTS-1 has apparent magnitude of 22.0, with absolute magnitude of 15.2.
  • It is 0.6 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 3916 with its spectral types of M05
  • In this planetary system, the extrasolar planet NGTS-1 b orbits around the star NGTS-1 every 2.6 days with its orbital distance of 0.03 AU ( 4876890.6 km)
  • (Projected orbit of NGTS-1 b around its host star NGTS-1)


  • The Star NGTS-1 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.190 AU ( 28477253.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.263 AU ( 39363006.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.401 AU ( 59980510.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.590 AU ( 88263948.9 km)
  • Radiation at Planetary Boundary of NGTS-1 b : 89094.23 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star NGTS-1)



  • Kopparapu Recent Venus for Star NGTS-1 distance : 0.214 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star NGTS-1 distance : 0.270 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star NGTS-1 distance : 0.261 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star NGTS-1 distance : 0.287 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star NGTS-1 distance : 0.515 AU
  • Kopparapu Outer Boundary for Early Mars for Star NGTS-1 distance : 0.544 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star NGTS-1)



  • Original Kopparapu Recent Venus for Star NGTS-1 distance : 0.211 AU
  • Original Kopparapu Runaway Greenhouse for Star NGTS-1 distance : 0.280 AU
  • Original Kopparapu Moist Greenhouse for Star NGTS-1 distance : 0.279 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star NGTS-1 distance : 0.524 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star NGTS-1 distance : 0.544 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star NGTS-1)



    (Position in Stellar Map of star NGTS-1 and its Exoplanet NGTS-1 b)



    (Zoomed position in Stellar Map of star NGTS-1 and its Exoplanet NGTS-1 b (zoom level 3))

    (Synthetic Spectrum of star NGTS-1*)
    *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