Imaginary Picture of ZTFJ0220+21 b

Display orbital revolution of ZTFJ0220+21 b around the hoststar ZTFJ0220+21
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Exoplanet Name : ZTFJ0220+21 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.5400 (Rjup) 6.0529 (Rearth)
Mass (Mjup / Me): 14.0000 (Mjup) 4451.1320 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.0020 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.0001
Orbital Period(Observed/Estimated) 0.04 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 121.4924
Star Radiation at Atmospheric Boundary: 1195521.7 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1475.8 (K)
Blackbody T 0.3(K) 1385.9 (K)
Blackbody T 0.7(K) 1121.4 (K)
Tidally Locked Blackbody T 0.1(K) 1755.1 (K)
Tidally Locked Blackbody T 0.3(K) 1648.2 (K)
Size Class: sub-Jupiter-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Theoretical
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : ZTFJ0220+21
Alternate Name :
Star Distance(LY) : 1141.5
Stellar Radius(Rsun) : 0.0 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.0 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 14200 (K)
Spectral type : WD
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : 0.0
Absolute Magnitude: 14.3
Apparent Magnitude: 22.0
Right Ascension(RA) 35.0375
Declination (DEC) 21.6989
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
ZTFJ0220+21 b
ZTFJ0220+21 b

  • ZTFJ0220+21 b is an exoplanet orbiting the star ZTFJ0220+21, located about 1141.5 light-years (350.0 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star ZTFJ0220+21 has apparent magnitude of 22.0, with absolute magnitude of 14.3.
  • It is 0.8 times more massive compared with our Sun. The surface temperature is 14200 with its spectral types of WD
  • In this planetary system, the extrasolar planet ZTFJ0220+21 b orbits around the star ZTFJ0220+21 every 0.0 days with its orbital distance of 0.00 AU ( 305510.2 km)
  • (Projected orbit of ZTFJ0220+21 b around its host star ZTFJ0220+21)


  • The Star ZTFJ0220+21 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.044 AU ( 6534837.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.060 AU ( 9032853.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.092 AU ( 13764069.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.135 AU ( 20254431.3 km)
  • Radiation at Planetary Boundary of ZTFJ0220+21 b : 1195521.69 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star ZTFJ0220+21)



  • Kopparapu Recent Venus for Star ZTFJ0220+21 distance : nan AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star ZTFJ0220+21 distance : nan AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star ZTFJ0220+21 distance : nan AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star ZTFJ0220+21 distance : nan AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star ZTFJ0220+21 distance : nan AU
  • Kopparapu Outer Boundary for Early Mars for Star ZTFJ0220+21 distance : nan AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star ZTFJ0220+21)



  • Original Kopparapu Recent Venus for Star ZTFJ0220+21 distance : nan AU
  • Original Kopparapu Runaway Greenhouse for Star ZTFJ0220+21 distance : nan AU
  • Original Kopparapu Moist Greenhouse for Star ZTFJ0220+21 distance : nan AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star ZTFJ0220+21 distance : nan AU
  • Original Kopparapu Outer Boundary for Early Mars for Star ZTFJ0220+21 distance : nan AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star ZTFJ0220+21)



    (Position in Stellar Map of star ZTFJ0220+21 and its Exoplanet ZTFJ0220+21 b)



    (Zoomed position in Stellar Map of star ZTFJ0220+21 and its Exoplanet ZTFJ0220+21 b (zoom level 3))

    (Synthetic Spectrum of star ZTFJ0220+21*)
    *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