Imaginary Picture of TrES-2 A b

Display orbital revolution of TrES-2 A b around the hoststar TrES-2 A
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Exoplanet Name : TrES-2 A b
Alternate Name : "Kepler-1 b, TrES-2 A b, TrES-2"
Status : Confirmed
Radius (Rjup / Re): 1.1890 (Rjup) 13.3275 (Rearth)
Mass (Mjup / Me): 1.2530 (Mjup) 398.3763 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0355 (AU) 0.0355 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0068
Orbital Period(Observed/Estimated) 2.47 (Days Obs.) 2.47 (Days Est.)
Surface Gravity (G Earth) 2.2428
Star Radiation at Atmospheric Boundary: 1136446.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1457.2 (K)
Blackbody T 0.3(K) 1368.5 (K)
Blackbody T 0.7(K) 1107.3 (K)
Tidally Locked Blackbody T 0.1(K) 1733.0 (K)
Tidally Locked Blackbody T 0.3(K) 1627.4 (K)
Size Class: 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 : TrES-2 A
Alternate Name : TrES-2
Star Distance(LY) : 717.5
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 5.1 (GY)
Temperature : 5850 (K)
Spectral type : G0V
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.1
Absolute Magnitude: 4.7
Apparent Magnitude: 11.4
Right Ascension(RA) 286.8085
Declination (DEC) 49.3164
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=TrES-2+&submit=SIMBAD+search
Open Exoplanet Database Link
TrES-2 A b
TrES-2 A b

  • TrES-2 A b is an exoplanet orbiting the star TrES-2 A, located about 717.5 light-years (220.0 pc) away from Solar System. Its discovery was publicly announced on 2006.
  • The host star TrES-2 A has apparent magnitude of 11.4, with absolute magnitude of 4.7.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5850 with its spectral types of G0V
  • In this planetary system, the extrasolar planet TrES-2 A b orbits around the star TrES-2 A every 2.5 days with its orbital distance of 0.04 AU ( 5318204.3 km)
  • (Projected orbit of TrES-2 A b around its host star TrES-2 A)


  • The Star TrES-2 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.741 AU ( 110909780.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.025 AU ( 153306300.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.562 AU ( 233604875.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.298 AU ( 343759807.5 km)
  • Radiation at Planetary Boundary of TrES-2 A b : 1136446.68 W/m2

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



  • Kopparapu Recent Venus for Star TrES-2 A distance : 0.765 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TrES-2 A distance : 0.969 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TrES-2 A distance : 0.936 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TrES-2 A distance : 1.026 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TrES-2 A distance : 1.708 AU
  • Kopparapu Outer Boundary for Early Mars for Star TrES-2 A distance : 1.801 AU

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



  • Original Kopparapu Recent Venus for Star TrES-2 A distance : 0.767 AU
  • Original Kopparapu Runaway Greenhouse for Star TrES-2 A distance : 0.995 AU
  • Original Kopparapu Moist Greenhouse for Star TrES-2 A distance : 1.015 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TrES-2 A distance : 1.738 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TrES-2 A distance : 1.807 AU

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



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



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

    (Synthetic Spectrum of star TrES-2 A*)
    *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