Imaginary Picture of WTS-2 b

Display orbital revolution of WTS-2 b around the hoststar WTS-2
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Exoplanet Name : WTS-2 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.3000 (Rjup) 14.5717 (Rearth)
Mass (Mjup / Me): 1.1200 (Mjup) 356.0906 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0186 (AU) 0.0186 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0028
Orbital Period(Observed/Estimated) 1.02 (Days Obs.) 1.02 (Days Est.)
Surface Gravity (G Earth) 1.6770
Star Radiation at Atmospheric Boundary: 1289930.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1504.1 (K)
Blackbody T 0.3(K) 1412.5 (K)
Blackbody T 0.7(K) 1142.9 (K)
Tidally Locked Blackbody T 0.1(K) 1788.7 (K)
Tidally Locked Blackbody T 0.3(K) 1679.8 (K)
Size Class: Super-Jupiter-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 : WTS-2
Alternate Name :
Star Distance(LY) : 3261.6
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.6 (GY)
Temperature : 5000 (K)
Spectral type : K3V
UV portion[%]: 3.2
Visible portion[%]: 37.1
IR portion[%]: 59.7
Metalicity : 0.2
Absolute Magnitude: 12.0
Apparent Magnitude: 22.0
Right Ascension(RA) 293.7328
Declination (DEC) 36.8156
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "J. L. Birkby, M. Cappetta, P. Cruz, J. Koppenhoefer, O. Ivanyuk, A. J. Mustill, S. T. Hodgkin, D. J. Pinfield, B. Sip_cz, G. Kov_cs, R. Saglia, Y. Pavlenko, D. Barrado, A. Bayo, D. Campbell, S. Catalan, L. Fossati, M.-C. G_lvez-Ortiz, M. Kenworthy, J. Lillo-Box E. L. Mart_n, D. Mislis, E. J. W. de Mooij, S. V. Nefs, I. A. G. Snellen, H. Stoev, J. Zendejas, C. del Burgo, J. Barnes, N. Goulding, C. A. Haswell, M. Kuznetsov, N. Lodieu, F. Murgas, E. Palle, E. Solano, P. Steele, R. Tata"
Discovery Paper - Title WTS-2 b: a hot Jupiter orbiting near its tidal destruction radius around a K-dwarf
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WTS-2+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/WTS-2%20b/
WTS-2 b
WTS-2 b
  • WTS-2 b is an exoplanet orbiting the star WTS-2, located about 3261.6 light-years (1000.0 pc) away from Solar System. Its discovery was publicly announced on 2013.
  • The host star WTS-2 has apparent magnitude of 22.0, with absolute magnitude of 12.0.
  • It is 0.8 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5000 with its spectral types of K3V
  • In this planetary system, the extrasolar planet WTS-2 b orbits around the star WTS-2 every 1.0 days with its orbital distance of 0.02 AU ( 2775040.5 km)
    • (Projected orbit of WTS-2 b around its host star WTS-2)


  • The Star WTS-2 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.412 AU ( 61657055.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.570 AU ( 85226163.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.868 AU ( 129865812.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.277 AU ( 191103231.4 km)
  • Radiation at Planetary Boundary of WTS-2 b : 1289930.51 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star WTS-2)



  • Kopparapu Recent Venus for Star WTS-2 distance : 0.446 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star WTS-2 distance : 0.564 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star WTS-2 distance : 0.545 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star WTS-2 distance : 0.598 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star WTS-2 distance : 1.023 AU
  • Kopparapu Outer Boundary for Early Mars for Star WTS-2 distance : 1.079 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star WTS-2)



  • Original Kopparapu Recent Venus for Star WTS-2 distance : 0.441 AU
  • Original Kopparapu Runaway Greenhouse for Star WTS-2 distance : 0.582 AU
  • Original Kopparapu Moist Greenhouse for Star WTS-2 distance : 0.584 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star WTS-2 distance : 1.040 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star WTS-2 distance : 1.082 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star WTS-2)



    (Position in Stellar Map of star WTS-2 and its Exoplanet WTS-2 b)



    (Zoomed position in Stellar Map of star WTS-2 and its Exoplanet WTS-2 b (zoom level 3))

    (Synthetic Spectrum of star WTS-2*)
    *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