Imaginary Picture of PSR J1959+2048 b

Display orbital revolution of PSR J1959+2048 b around the hoststar PSR J1959+2048
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Exoplanet Name : PSR J1959+2048 b
Alternate Name : PSR B1957+20 b
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 24.0000 (Mjup) 7630.5120 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0000 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0010
Orbital Period(Observed/Estimated) 0.38 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 73.6904
Star Radiation at Atmospheric Boundary: 0.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 0.0 (K)
Blackbody T 0.3(K) 0.0 (K)
Blackbody T 0.7(K) 0.0 (K)
Tidally Locked Blackbody T 0.1(K) 0.0 (K)
Tidally Locked Blackbody T 0.3(K) 0.0 (K)
Size Class: Jupiter-size
Mass Class:
Detection Type : Default
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : PSR J1959+2048
Alternate Name : "PSR B1957+20, Black Widow, QX Sge"
Star Distance(LY) : 7338.5
Stellar Radius(Rsun) : 0.0 (Rsun Estimated)
Stellar Mass(Msun) : 0.0 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5500 (K)
Spectral type : Pulsar
UV portion[%]: 6.9
Visible portion[%]: 43.2
IR portion[%]: 49.9
Metalicity : 0.0
Absolute Magnitude: 10.2
Apparent Magnitude: 22.0
Right Ascension(RA) 299.9032
Declination (DEC) 20.8041
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=PSR+B1957%2B20+&submit=SIMBAD+search
Open Exoplanet Database Link 0
PSR J1959+2048 b
PSR J1959+2048 b

  • PSR J1959+2048 b is an exoplanet orbiting the star PSR J1959+2048, located about 7338.5 light-years (2250.0 pc) away from Solar System. Its discovery was publicly announced on 2007.
  • The host star PSR J1959+2048 has apparent magnitude of 22.0, with absolute magnitude of 10.2.
  • In this planetary system, the extrasolar planet PSR J1959+2048 b orbits around the star PSR J1959+2048 every 0.4 days with its orbital distance of 0.00 AU ( 0.0 km)
  • (Projected orbit of PSR J1959+2048 b around its host star PSR J1959+2048)


  • The Star PSR J1959+2048 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.000 AU ( 1409.2 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.000 AU ( 1947.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.000 AU ( 2968.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.000 AU ( 4367.6 km)
  • Radiation at Planetary Boundary of PSR J1959+2048 b : 0.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star PSR J1959+2048)



  • Kopparapu Recent Venus for Star PSR J1959+2048 distance : 0.762 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star PSR J1959+2048 distance : 0.965 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star PSR J1959+2048 distance : 0.932 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star PSR J1959+2048 distance : 1.022 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star PSR J1959+2048 distance : 1.718 AU
  • Kopparapu Outer Boundary for Early Mars for Star PSR J1959+2048 distance : 1.812 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star PSR J1959+2048)



  • Original Kopparapu Recent Venus for Star PSR J1959+2048 distance : 0.759 AU
  • Original Kopparapu Runaway Greenhouse for Star PSR J1959+2048 distance : 0.992 AU
  • Original Kopparapu Moist Greenhouse for Star PSR J1959+2048 distance : 1.004 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star PSR J1959+2048 distance : 1.747 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star PSR J1959+2048 distance : 1.817 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star PSR J1959+2048)



    (Position in Stellar Map of star PSR J1959+2048 and its Exoplanet PSR J1959+2048 b)



    (Zoomed position in Stellar Map of star PSR J1959+2048 and its Exoplanet PSR J1959+2048 b (zoom level 3))

    (Synthetic Spectrum of star PSR J1959+2048*)
    *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