Imaginary Picture of TOI-130 b

Display orbital revolution of TOI-130 b around the hoststar HD 5278
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Exoplanet Name : TOI-130 b
Alternate Name : HD 5278 b
Status : Confirmed
Radius (Rjup / Re): 0.2186 (Rjup) 2.4503 (Rearth)
Mass (Mjup / Me): 0.0245 (Mjup) 7.7895 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.1200 (AU) 0.1200 (AU Est.)
Eccentricity : 0.0800
Orbital Period(Yrs) 0.0393
Orbital Period(Observed/Estimated) 14.34 (Days Obs.) 14.31 (Days Est.)
Surface Gravity (G Earth) 1.2974
Star Radiation at Atmospheric Boundary: 179745.5 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 919.0 (K)
Blackbody T 0.3(K) 863.0 (K)
Blackbody T 0.7(K) 698.3 (K)
Tidally Locked Blackbody T 0.1(K) 1092.9 (K)
Tidally Locked Blackbody T 0.3(K) 1026.3 (K)
Size Class: sub-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 : HD 5278
Alternate Name : TOI-130
Star Distance(LY) : 183.0
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 3.0 (GY)
Temperature : 6203 (K)
Spectral type : F8
UV portion[%]: 7.8
Visible portion[%]: 44.8
IR portion[%]: 47.4
Metalicity : -0.1
Absolute Magnitude: 4.3
Apparent Magnitude: 8.0
Right Ascension(RA) 12.5417
Declination (DEC) -83.7439
Hubble Space Telescope Guide Star Catalog (GSC) ID 09490-00786
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK https://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+5278&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-130 b
TOI-130 b

  • TOI-130 b is an exoplanet orbiting the star HD 5278, located about 183.0 light-years (56.1 pc) away from Solar System. Its discovery was publicly announced on 2021.
  • The host star HD 5278 has apparent magnitude of 8.0, with absolute magnitude of 4.3.
  • It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 6203 with its spectral types of F8
  • In this planetary system, the extrasolar planet TOI-130 b orbits around the star HD 5278 every 14.3 days with its orbital distance of 0.12 AU ( 17951744.5 km)
  • (Projected orbit of TOI-130 b around its host star HD 5278)


  • The Star HD 5278 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.995 AU ( 148890161.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.376 AU ( 205805113.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 2.096 AU ( 313601447.8 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 3.085 AU ( 461478268.5 km)
  • Radiation at Planetary Boundary of TOI-130 b : 179745.53 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HD 5278)



  • Kopparapu Recent Venus for Star HD 5278 distance : 1.005 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HD 5278 distance : 1.273 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HD 5278 distance : 1.229 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HD 5278 distance : 1.347 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 5278 distance : 2.226 AU
  • Kopparapu Outer Boundary for Early Mars for Star HD 5278 distance : 2.348 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HD 5278)



  • Original Kopparapu Recent Venus for Star HD 5278 distance : 1.016 AU
  • Original Kopparapu Runaway Greenhouse for Star HD 5278 distance : 1.306 AU
  • Original Kopparapu Moist Greenhouse for Star HD 5278 distance : 1.344 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HD 5278 distance : 2.266 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HD 5278 distance : 2.357 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HD 5278)



    (Position in Stellar Map of star HD 5278 and its Exoplanet TOI-130 b)



    (Zoomed position in Stellar Map of star HD 5278 and its Exoplanet TOI-130 b (zoom level 3))

    (Synthetic Spectrum of star HD 5278*)
    *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