Imaginary Picture of MARVELS-18 b

Display orbital revolution of MARVELS-18 b around the hoststar TYC 3556-3602-1
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Exoplanet Name : MARVELS-18 b
Alternate Name :
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 24.4000 (Mjup) 7757.6872 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.5100 (AU) 0.5100 (AU Est.)
Eccentricity : 0.4600
Orbital Period(Yrs) 0.3220
Orbital Period(Observed/Estimated) 117.60 (Days Obs.) 118.98 (Days Est.)
Star Radiation at Atmospheric Boundary: 11201.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 459.2 (K)
Blackbody T 0.3(K) 431.2 (K)
Blackbody T 0.7(K) 348.9 (K)
Tidally Locked Blackbody T 0.1(K) 546.0 (K)
Tidally Locked Blackbody T 0.3(K) 512.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TYC 3556-3602-1
Alternate Name : 2MASS J19383993+4634401
Star Distance(LY) : 1418.5
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.2 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 6295 (K)
Spectral type : F8
Metalicity : 0.1
Absolute Magnitude: 2.4
Apparent Magnitude: 10.6
Right Ascension(RA) 294.6664
Declination (DEC) 46.5778
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
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SIMBAD LINK
Open Exoplanet Database Link
MARVELS-18 b
MARVELS-18 b

  • MARVELS-18 b is an exoplanet orbiting the star TYC 3556-3602-1, located about 1418.5 light-years (434.9 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star TYC 3556-3602-1 has apparent magnitude of 10.6, with absolute magnitude of 2.4.
  • It is 1.2 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 6295 with its spectral types of F8
  • In this planetary system, the extrasolar planet MARVELS-18 b orbits around the star TYC 3556-3602-1 every 117.6 days with its orbital distance of 0.51 AU ( 76294914.1 km)
  • (Projected orbit of MARVELS-18 b around its host star TYC 3556-3602-1)


  • The Star TYC 3556-3602-1 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.056 AU ( 157962752.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.460 AU ( 218345804.6 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.224 AU ( 332710686.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.273 AU ( 489598350.1 km)
  • Radiation at Planetary Boundary of MARVELS-18 b : 11201.02 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TYC 3556-3602-1)



  • Kopparapu Recent Venus for Star TYC 3556-3602-1 distance : 1.061 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TYC 3556-3602-1 distance : 1.343 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TYC 3556-3602-1 distance : 1.297 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TYC 3556-3602-1 distance : 1.421 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TYC 3556-3602-1 distance : 2.345 AU
  • Kopparapu Outer Boundary for Early Mars for Star TYC 3556-3602-1 distance : 2.473 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TYC 3556-3602-1)



  • Original Kopparapu Recent Venus for Star TYC 3556-3602-1 distance : 1.074 AU
  • Original Kopparapu Runaway Greenhouse for Star TYC 3556-3602-1 distance : 1.378 AU
  • Original Kopparapu Moist Greenhouse for Star TYC 3556-3602-1 distance : 1.421 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TYC 3556-3602-1 distance : 2.387 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TYC 3556-3602-1 distance : 2.482 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TYC 3556-3602-1)



    (Position in Stellar Map of star TYC 3556-3602-1 and its Exoplanet MARVELS-18 b)



    (Zoomed position in Stellar Map of star TYC 3556-3602-1 and its Exoplanet MARVELS-18 b (zoom level 3))