Imaginary Picture of GJ 1289 b

Display orbital revolution of GJ 1289 b around the hoststar GJ 1289
/
Exoplanet Name : GJ 1289 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.1444 (Rjup) 1.6191 (Rearth)
Mass (Mjup / Me): 0.0197 (Mjup) 6.2729 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.2700 (AU) 0.2700 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.3059
Orbital Period(Observed/Estimated) 111.74 (Days Obs.) 111.82 (Days Est.)
Surface Gravity (G Earth) 2.3929
Star Radiation at Atmospheric Boundary: 102.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 142.0 (K)
Blackbody T 0.3(K) 133.4 (K)
Blackbody T 0.7(K) 107.9 (K)
Tidally Locked Blackbody T 0.1(K) 168.9 (K)
Tidally Locked Blackbody T 0.3(K) 158.6 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection : Radial Velocity
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : GJ 1289
Alternate Name : "G 130-4, LHS 4003"
Star Distance(LY) : 28.9
Stellar Radius(Rsun) : 0.2 (Rsun Measured)
Stellar Mass(Msun) : 0.2 (Msun Measured) 0.2 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3175 (K)
Spectral type : M4.5Ve
UV portion[%]: 0.3
Visible portion[%]: 7.4
IR portion[%]: 92.3
Metalicity : 0.0
Absolute Magnitude: 12.9
Apparent Magnitude: 12.7
Right Ascension(RA) 355.7763
Declination (DEC) 36.5370
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
GJ 1289 b
GJ 1289 b

  • GJ 1289 b is an exoplanet orbiting the star GJ 1289, located about 28.9 light-years ( 8.9 pc) away from Solar System. Its discovery was publicly announced on 2024.
  • The host star GJ 1289 has apparent magnitude of 12.7, with absolute magnitude of 12.9.
  • It is 0.2 times more massive and 0.2 times bigger compared with our Sun. The surface temperature is 3175 with its spectral types of M4.5Ve
  • In this planetary system, the extrasolar planet GJ 1289 b orbits around the star GJ 1289 every 111.7 days with its orbital distance of 0.27 AU ( 40391425.1 km)
  • (Projected orbit of GJ 1289 b around its host star GJ 1289)


  • The Star GJ 1289 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.054 AU ( 8004084.3 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.074 AU ( 11063736.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.113 AU ( 16858685.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.166 AU ( 24808294.5 km)
  • Radiation at Planetary Boundary of GJ 1289 b : 102.61 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star GJ 1289)



  • Kopparapu Recent Venus for Star GJ 1289 distance : 0.061 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star GJ 1289 distance : 0.077 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star GJ 1289 distance : 0.074 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star GJ 1289 distance : 0.082 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 1289 distance : 0.152 AU
  • Kopparapu Outer Boundary for Early Mars for Star GJ 1289 distance : 0.160 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star GJ 1289)



  • Original Kopparapu Recent Venus for Star GJ 1289 distance : 0.060 AU
  • Original Kopparapu Runaway Greenhouse for Star GJ 1289 distance : 0.080 AU
  • Original Kopparapu Moist Greenhouse for Star GJ 1289 distance : 0.080 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star GJ 1289 distance : 0.154 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star GJ 1289 distance : 0.160 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star GJ 1289)



    (Position in Stellar Map of star GJ 1289 and its Exoplanet GJ 1289 b)



    (Zoomed position in Stellar Map of star GJ 1289 and its Exoplanet GJ 1289 b (zoom level 3))

    (Synthetic Spectrum of star GJ 1289*)
    *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