Imaginary Picture of TOI-1471 b

Display orbital revolution of TOI-1471 b around the hoststar TOI-1471
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Exoplanet Name : TOI-1471 b
Alternate Name : HIP 9618 b
Status : Confirmed
Radius (Rjup / Re): 0.3480 (Rjup) 3.9007 (Rearth)
Mass (Mjup / Me): 0.0310 (Mjup) 9.8561 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1438 (AU) 0.1438 (AU Est.)
Eccentricity : 0.2200
Orbital Period(Yrs) 0.0569
Orbital Period(Observed/Estimated) 20.77 (Days Obs.) 19.70 (Days Est.)
Surface Gravity (G Earth) 0.6478
Star Radiation at Atmospheric Boundary: 54797.8 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 682.9 (K)
Blackbody T 0.3(K) 641.3 (K)
Blackbody T 0.7(K) 518.9 (K)
Tidally Locked Blackbody T 0.1(K) 812.1 (K)
Tidally Locked Blackbody T 0.3(K) 762.6 (K)
Size Class: Neptune-size
Mass Class:
Detection Type : Primary Transit
Mass Detection : Radial Velocity
Radius Detection : Primary Transit
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : TOI-1471
Alternate Name : HIP 9618
Star Distance(LY) : 203.2
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 5609 (K)
Spectral type : G6
UV portion[%]: 7.3
Visible portion[%]: 43.9
IR portion[%]: 48.8
Metalicity : 0.0
Absolute Magnitude: 6.0
Apparent Magnitude: 10.0
Right Ascension(RA) 30.9043
Declination (DEC) 21.2809
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
TOI-1471 b
TOI-1471 b

  • TOI-1471 b is an exoplanet orbiting the star TOI-1471, located about 203.2 light-years (62.3 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star TOI-1471 has apparent magnitude of 10.0, with absolute magnitude of 6.0.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5609 with its spectral types of G6
  • In this planetary system, the extrasolar planet TOI-1471 b orbits around the star TOI-1471 every 20.8 days with its orbital distance of 0.14 AU ( 21512173.8 km)
  • (Projected orbit of TOI-1471 b around its host star TOI-1471)


  • The Star TOI-1471 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.659 AU ( 98513562.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.910 AU ( 136171488.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.387 AU ( 207495213.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.041 AU ( 305338296.6 km)
  • Radiation at Planetary Boundary of TOI-1471 b : 54797.77 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1471)



  • Kopparapu Recent Venus for Star TOI-1471 distance : 0.689 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1471 distance : 0.873 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1471 distance : 0.843 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1471 distance : 0.925 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1471 distance : 1.549 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1471 distance : 1.634 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1471)



  • Original Kopparapu Recent Venus for Star TOI-1471 distance : 0.688 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1471 distance : 0.898 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1471 distance : 0.910 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1471 distance : 1.576 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1471 distance : 1.639 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1471)



    (Position in Stellar Map of star TOI-1471 and its Exoplanet TOI-1471 b)



    (Zoomed position in Stellar Map of star TOI-1471 and its Exoplanet TOI-1471 b (zoom level 3))

    (Synthetic Spectrum of star TOI-1471*)
    *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