Imaginary Picture of MARVELS-8 b

Display orbital revolution of MARVELS-8 b around the hoststar TYC 123-549-1
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Exoplanet Name : MARVELS-8 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 37.7000 (Mjup) 11986.2626 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2150 (AU) 0.2150 (AU Est.)
Eccentricity : 0.1010
Orbital Period(Yrs) 0.0987
Orbital Period(Observed/Estimated) 36.05 (Days Obs.) 36.05 (Days Est.)
Surface Gravity (G Earth) 115.7553
Star Radiation at Atmospheric Boundary: 22553.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 546.9 (K)
Blackbody T 0.3(K) 513.6 (K)
Blackbody T 0.7(K) 415.6 (K)
Tidally Locked Blackbody T 0.1(K) 650.4 (K)
Tidally Locked Blackbody T 0.3(K) 610.8 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TYC 123-549-1
Alternate Name : 2MASS J05431875+0513144
Star Distance(LY) : 363.6
Stellar Radius(Rsun) : 0.9 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5540 (K)
Spectral type : G7
UV portion[%]: 7.0
Visible portion[%]: 43.5
IR portion[%]: 49.4
Metalicity : 0.2
Absolute Magnitude: 5.1
Apparent Magnitude: 10.3
Right Ascension(RA) 85.8281
Declination (DEC) 5.2207
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
MARVELS-8 b
MARVELS-8 b

  • MARVELS-8 b is an exoplanet orbiting the star TYC 123-549-1, located about 363.6 light-years (111.5 pc) away from Solar System. Its discovery was publicly announced on 2017.
  • The host star TYC 123-549-1 has apparent magnitude of 10.3, with absolute magnitude of 5.1.
  • It is 1.0 times more massive and 0.9 times bigger compared with our Sun. The surface temperature is 5540 with its spectral types of G7
  • In this planetary system, the extrasolar planet MARVELS-8 b orbits around the star TYC 123-549-1 every 36.0 days with its orbital distance of 0.21 AU ( 32163542.2 km)
  • (Projected orbit of MARVELS-8 b around its host star TYC 123-549-1)


  • The Star TYC 123-549-1 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.632 AU ( 94493350.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.873 AU ( 130614504.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.330 AU ( 199027599.4 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.958 AU ( 292877831.3 km)
  • Radiation at Planetary Boundary of MARVELS-8 b : 22553.51 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TYC 123-549-1)



  • Kopparapu Recent Venus for Star TYC 123-549-1 distance : 0.664 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TYC 123-549-1 distance : 0.841 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TYC 123-549-1 distance : 0.812 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TYC 123-549-1 distance : 0.890 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TYC 123-549-1 distance : 1.495 AU
  • Kopparapu Outer Boundary for Early Mars for Star TYC 123-549-1 distance : 1.577 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TYC 123-549-1)



  • Original Kopparapu Recent Venus for Star TYC 123-549-1 distance : 0.662 AU
  • Original Kopparapu Runaway Greenhouse for Star TYC 123-549-1 distance : 0.865 AU
  • Original Kopparapu Moist Greenhouse for Star TYC 123-549-1 distance : 0.876 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TYC 123-549-1 distance : 1.521 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TYC 123-549-1 distance : 1.582 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TYC 123-549-1)



    (Position in Stellar Map of star TYC 123-549-1 and its Exoplanet MARVELS-8 b)



    (Zoomed position in Stellar Map of star TYC 123-549-1 and its Exoplanet MARVELS-8 b (zoom level 3))

    (Synthetic Spectrum of star TYC 123-549-1*)
    *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