Imaginary Picture of ES Cet b

Display orbital revolution of ES Cet b around the hoststar ES Cet
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Exoplanet Name : ES Cet b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.4940 (Rjup) 5.5372 (Rearth)
Mass (Mjup / Me): 62.0000 (Mjup) 19712.1560 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0007 (AU) 0.0007 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0000
Orbital Period(Observed/Estimated) 0.01 (Days Obs.) 0.01 (Days Est.)
Surface Gravity (G Earth) 642.9045
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: sub-Jupiter-size
Mass Class:
Detection Type : "Timing, Other"
Mass Detection : Theoretical
Radius Detection : Flux
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : ES Cet
Alternate Name : KUV 01584-0939
Star Distance(LY) : 1141.5
Stellar Radius(Rsun) : 0.0 (Rsun Measured)
Stellar Mass(Msun) : 0.7 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 130000 (K)
Spectral type : DA
UV portion[%]: 0.3
Visible portion[%]: 1.5
IR portion[%]: 98.2
Metalicity : 0.0
Absolute Magnitude: 9.2
Apparent Magnitude: 16.9
Right Ascension(RA) 30.2176
Declination (DEC) -9.4088
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
ES Cet b
ES Cet b

  • ES Cet b is an exoplanet orbiting the star ES Cet, located about 1141.5 light-years (350.0 pc) away from Solar System. Its discovery was publicly announced on 1988.
  • The host star ES Cet has apparent magnitude of 16.9, with absolute magnitude of 9.2.
  • It is 0.7 times more massive compared with our Sun. The surface temperature is 130000 with its spectral types of DA
  • (Projected orbit of ES Cet b around its host star ES Cet)


  • The Star ES Cet 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 3.661 AU ( 547702618.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 5.061 AU ( 757068150.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 7.711 AU ( 1153604322.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 11.348 AU ( 1697579296.3 km)
  • Radiation at Planetary Boundary of ES Cet b : 0.00 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star ES Cet)



  • Kopparapu Recent Venus for Star ES Cet distance : nan AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star ES Cet distance : nan AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star ES Cet distance : nan AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star ES Cet distance : nan AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star ES Cet distance : nan AU
  • Kopparapu Outer Boundary for Early Mars for Star ES Cet distance : nan AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star ES Cet)



  • Original Kopparapu Recent Venus for Star ES Cet distance : nan AU
  • Original Kopparapu Runaway Greenhouse for Star ES Cet distance : nan AU
  • Original Kopparapu Moist Greenhouse for Star ES Cet distance : nan AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star ES Cet distance : nan AU
  • Original Kopparapu Outer Boundary for Early Mars for Star ES Cet distance : nan AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star ES Cet)



    (Position in Stellar Map of star ES Cet and its Exoplanet ES Cet b)



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

    (Synthetic Spectrum of star ES Cet*)
    *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