Imaginary Picture of NSV 1440 b

Display orbital revolution of NSV 1440 b around the hoststar NSV 1440
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Exoplanet Name : NSV 1440 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 29.2500 (Mjup) 9299.6865 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0015 (AU) 0.0015 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0001
Orbital Period(Observed/Estimated) 0.03 (Days Obs.) 0.03 (Days Est.)
Surface Gravity (G Earth) 89.8102
Star Radiation at Atmospheric Boundary: 169735400.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 5094.3 (K)
Blackbody T 0.3(K) 4784.1 (K)
Blackbody T 0.7(K) 3870.8 (K)
Tidally Locked Blackbody T 0.1(K) 6058.2 (K)
Tidally Locked Blackbody T 0.3(K) 5689.3 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Other
Mass Detection : Theoretical
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : NSV 1440
Alternate Name : "ASASSN-15sz, BV 1025"
Star Distance(LY) : 6454.6
Stellar Radius(Rsun) : 0.6 (Rsun Estimated)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5500 (K)
Spectral type : DA
UV portion[%]: 6.9
Visible portion[%]: 43.2
IR portion[%]: 49.9
Metalicity : 0.0
Absolute Magnitude: 3.4
Apparent Magnitude: 14.9
Right Ascension(RA) 58.9232
Declination (DEC) -82.4255
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
NSV 1440 b
NSV 1440 b

  • NSV 1440 b is an exoplanet orbiting the star NSV 1440, located about 6454.6 light-years (1979.0 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star NSV 1440 has apparent magnitude of 14.9, with absolute magnitude of 3.4.
  • It is 0.7 times more massive and 0.6 times bigger compared with our Sun. The surface temperature is 5500 with its spectral types of DA
  • In this planetary system, the extrasolar planet NSV 1440 b orbits around the star NSV 1440 every 0.0 days with its orbital distance of 0.00 AU ( 221404.8 km)
  • (Projected orbit of NSV 1440 b around its host star NSV 1440)


  • The Star NSV 1440 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.377 AU ( 56429166.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.521 AU ( 77999855.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.794 AU ( 118854517.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.169 AU ( 174899629.8 km)
  • Radiation at Planetary Boundary of NSV 1440 b : 169735400.55 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star NSV 1440)



  • Kopparapu Recent Venus for Star NSV 1440 distance : 0.397 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star NSV 1440 distance : 0.503 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star NSV 1440 distance : 0.486 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star NSV 1440 distance : 0.533 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star NSV 1440 distance : 0.896 AU
  • Kopparapu Outer Boundary for Early Mars for Star NSV 1440 distance : 0.945 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star NSV 1440)



  • Original Kopparapu Recent Venus for Star NSV 1440 distance : 0.396 AU
  • Original Kopparapu Runaway Greenhouse for Star NSV 1440 distance : 0.518 AU
  • Original Kopparapu Moist Greenhouse for Star NSV 1440 distance : 0.524 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star NSV 1440 distance : 0.911 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star NSV 1440 distance : 0.948 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star NSV 1440)



    (Position in Stellar Map of star NSV 1440 and its Exoplanet NSV 1440 b)



    (Zoomed position in Stellar Map of star NSV 1440 and its Exoplanet NSV 1440 b (zoom level 3))

    (Synthetic Spectrum of star NSV 1440*)
    *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