Imaginary Picture of TOI-4551 b

Display orbital revolution of TOI-4551 b around the hoststar TOI-4551
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Exoplanet Name : TOI-4551 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.0600 (Rjup) 11.8815 (Rearth)
Mass (Mjup / Me): 1.4900 (Mjup) 473.7276 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0994 (AU) 0.0994 (AU Est.)
Eccentricity : 0.1000
Orbital Period(Yrs) 0.0273
Orbital Period(Observed/Estimated) 9.96 (Days Obs.) 10.00 (Days Est.)
Surface Gravity (G Earth) 3.3557
Star Radiation at Atmospheric Boundary: 898782.0 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1374.2 (K)
Blackbody T 0.3(K) 1290.5 (K)
Blackbody T 0.7(K) 1044.2 (K)
Tidally Locked Blackbody T 0.1(K) 1634.2 (K)
Tidally Locked Blackbody T 0.3(K) 1534.7 (K)
Size Class: Jupiter-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-4551
Alternate Name :
Star Distance(LY) : 725.7
Stellar Radius(Rsun) : 3.5 (Rsun Measured)
Stellar Mass(Msun) : 1.3 (Msun Measured) 1.3 (Msun Estimated)
Star Age : 4.9 (GY)
Temperature : 4896 (K)
Spectral type : K2
UV portion[%]: 2.8
Visible portion[%]: 36.1
IR portion[%]: 61.1
Metalicity : 0.2
Absolute Magnitude: 3.3
Apparent Magnitude: 10.0
Right Ascension(RA) 184.9792
Declination (DEC) -25.8278
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-4551 b
TOI-4551 b

  • TOI-4551 b is an exoplanet orbiting the star TOI-4551, located about 725.7 light-years (222.5 pc) away from Solar System. Its discovery was publicly announced on 2023.
  • The host star TOI-4551 has apparent magnitude of 10.0, with absolute magnitude of 3.3.
  • It is 1.3 times more massive and 3.5 times bigger compared with our Sun. The surface temperature is 4896 with its spectral types of K2
  • In this planetary system, the extrasolar planet TOI-4551 b orbits around the star TOI-4551 every 10.0 days with its orbital distance of 0.10 AU ( 14870028.3 km)
  • (Projected orbit of TOI-4551 b around its host star TOI-4551)


  • The Star TOI-4551 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 1.844 AU ( 275784138.1 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 2.548 AU ( 381205749.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 3.883 AU ( 580873202.1 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 5.714 AU ( 854780363.3 km)
  • Radiation at Planetary Boundary of TOI-4551 b : 898782.04 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-4551)



  • Kopparapu Recent Venus for Star TOI-4551 distance : 2.004 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-4551 distance : 2.537 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-4551 distance : 2.451 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-4551 distance : 2.690 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-4551 distance : 4.618 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-4551 distance : 4.871 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-4551)



  • Original Kopparapu Recent Venus for Star TOI-4551 distance : 1.981 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-4551 distance : 2.616 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-4551 distance : 2.621 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-4551 distance : 4.695 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-4551 distance : 4.883 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-4551)



    (Position in Stellar Map of star TOI-4551 and its Exoplanet TOI-4551 b)



    (Zoomed position in Stellar Map of star TOI-4551 and its Exoplanet TOI-4551 b (zoom level 3))

    (Synthetic Spectrum of star TOI-4551*)
    *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