Imaginary Picture of LTT 9779 b
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Exoplanet Name : LTT 9779 b
Alternate Name : TOI-193 b
Radius (Rjup / Re): 0.4100 (Rjup) 4.5957 (Rearth)
Mass (Mjup / Me): 0.0922 (Mjup) 29.3139 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0022
Orbital Period(Observed/Estimated) 0.79 (Days Obs.) 0.00 (Days Est.)
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 0.0 (K)
Blackbody T 0.3(K) 0.0 (K)
Blackbody T 0.7(K) 0.0 (K)
Tidally Locked Blackbody T 0.1(K) 0.0 (K)
Tidally Locked Blackbody T 0.3(K) 0.0 (K)
Size Class: Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : LTT 9779
Alternate Name :
Star Distance(LY) : 263.0
Stellar Radius(Rsun) : 0.8 (Rsun Estimated)
Stellar Mass(Msun) : 0.0 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5440 (K)
Spectral type : G8
Metalicity : 9.8
Absolute Magnitude: 17.5
Apparent Magnitude: 22.0
Right Ascension(RA) 358.6675
Declination (DEC) -37.6281
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LTT+9779+&submit=SIMBAD+search
Open Exoplanet Database Link
LTT 9779 b
LTT 9779 b

  • LTT 9779 b is an exoplanet orbiting the star LTT 9779, located about 263.0 light-years (80.6 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star LTT 9779 has apparent magnitude of 22.0, with absolute magnitude of 17.5.
  • In this planetary system, the extrasolar planet LTT 9779 b orbits around the star LTT 9779 every 0.8 days with its orbital distance of 0.00 AU ( 0.0 km)
  • (Projected orbit of LTT 9779 b around its host star LTT 9779)


  • The Star LTT 9779 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.517 AU ( 77267751.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.714 AU ( 106804225.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.088 AU ( 162746003.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.601 AU ( 239487873.8 km)
  • Radiation at Planetary Boundary of LTT 9779 b : 0.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star LTT 9779)



  • Kopparapu Recent Venus for Star LTT 9779 distance : 0.546 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star LTT 9779 distance : 0.691 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star LTT 9779 distance : 0.668 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star LTT 9779 distance : 0.732 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star LTT 9779 distance : 1.233 AU
  • Kopparapu Outer Boundary for Early Mars for Star LTT 9779 distance : 1.301 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star LTT 9779)



  • Original Kopparapu Recent Venus for Star LTT 9779 distance : 0.543 AU
  • Original Kopparapu Runaway Greenhouse for Star LTT 9779 distance : 0.711 AU
  • Original Kopparapu Moist Greenhouse for Star LTT 9779 distance : 0.719 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star LTT 9779 distance : 1.255 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star LTT 9779 distance : 1.305 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star LTT 9779)



    (Position in Stellar Map of star LTT 9779 and its Exoplanet LTT 9779 b)



    (Zoomed position in Stellar Map of star LTT 9779 and its Exoplanet LTT 9779 b (zoom level 3))