Imaginary Picture of HD 134987 b

Display orbital revolution of HD 134987 b around the hoststar HD 134987
/
Exoplanet Name : HD 134987 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 1.5900 (Mjup) 505.5214 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.8100 (AU) 0.8100 (AU Est.)
Eccentricity : 0.2330
Orbital Period(Yrs) 0.7069
Orbital Period(Observed/Estimated) 258.19 (Days Obs.) 257.41 (Days Est.)
Surface Gravity (G Earth) 4.8820
Star Radiation at Atmospheric Boundary: 3170.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 334.9 (K)
Blackbody T 0.3(K) 314.5 (K)
Blackbody T 0.7(K) 254.5 (K)
Tidally Locked Blackbody T 0.1(K) 398.3 (K)
Tidally Locked Blackbody T 0.3(K) 374.0 (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 : HD 134987
Alternate Name :
Star Distance(LY) : 85.5
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 9.7 (GY)
Temperature : 5740 (K)
Spectral type : G5 V
UV portion[%]: 7.7
Visible portion[%]: 44.6
IR portion[%]: 47.7
Metalicity : 0.2
Absolute Magnitude: 4.4
Apparent Magnitude: 6.5
Right Ascension(RA) 228.3694
Declination (DEC) -25.3092
Hubble Space Telescope Guide Star Catalog (GSC) ID 06766-00877
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+134987+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HD%20134987%20b/
HD 134987 b
HD 134987 b

  • HD 134987 b is an exoplanet orbiting the star HD 134987, located about 85.5 light-years (26.2 pc) away from Solar System. Its discovery was publicly announced on 1999.
  • The host star HD 134987 has apparent magnitude of 6.5, with absolute magnitude of 4.4.
  • It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5740 with its spectral types of G5 V
  • In this planetary system, the extrasolar planet HD 134987 b orbits around the star HD 134987 every 258.2 days with its orbital distance of 0.81 AU ( 121174275.3 km)
  • (Projected orbit of HD 134987 b around its host star HD 134987)


  • The Star HD 134987 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.892 AU ( 133472535.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.233 AU ( 184493924.5 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.879 AU ( 281127912.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.765 AU ( 413692038.6 km)
  • Radiation at Planetary Boundary of HD 134987 b : 3170.31 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 134987)



  • Kopparapu Recent Venus for Star HD 134987 distance : 0.927 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 134987 distance : 1.174 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 134987 distance : 1.134 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 134987 distance : 1.243 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 134987 distance : 2.075 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 134987 distance : 2.188 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 134987)



  • Original Kopparapu Recent Venus for Star HD 134987 distance : 0.927 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 134987 distance : 1.206 AU
  • Original Kopparapu Moist Greenhouse for Star HD 134987 distance : 1.227 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 134987 distance : 2.111 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 134987 distance : 2.195 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 134987)



    (Position in Stellar Map of star HD 134987 and its Exoplanet HD 134987 b)



    (Zoomed position in Stellar Map of star HD 134987 and its Exoplanet HD 134987 b (zoom level 3))

    (Synthetic Spectrum of star HD 134987*)
    *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