Imaginary Picture of Gliese 49 Ab

Display orbital revolution of Gliese 49 Ab around the hoststar Gliese 49 A
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Exoplanet Name : Gliese 49 Ab
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.1405 (Rjup) 1.5753 (Rearth)
Mass (Mjup / Me): 0.0177 (Mjup) 5.6307 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0905 (AU) 0.0905 (AU Est.)
Eccentricity : 0.3630
Orbital Period(Yrs) 0.0379
Orbital Period(Observed/Estimated) 13.85 (Days Obs.) 13.86 (Days Est.)
Surface Gravity (G Earth) 2.2689
Star Radiation at Atmospheric Boundary: 8195.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 424.7 (K)
Blackbody T 0.3(K) 398.8 (K)
Blackbody T 0.7(K) 322.7 (K)
Tidally Locked Blackbody T 0.1(K) 505.0 (K)
Tidally Locked Blackbody T 0.3(K) 474.2 (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 : Gliese 49 A
Alternate Name : "2MASS J01023895+6220422, BD+61 195, HIP 4872, IRAS 00594+6204, LHS 1179, TYC 4021-01115-1, WDS J01026+6221A, WISE J0102œ
Star Distance(LY) : 32.1
Stellar Radius(Rsun) : 0.5 (Rsun Measured)
Stellar Mass(Msun) : 0.5 (Msun Measured) 0.5 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 3805 (K)
Spectral type : M1.5V
UV portion[%]: 0.3
Visible portion[%]: 13.8
IR portion[%]: 85.8
Metalicity : 0.1
Absolute Magnitude: 9.6
Apparent Magnitude: 9.6
Right Ascension(RA) 15.6708
Declination (DEC) 62.3456
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
Gliese 49 Ab
Gliese 49 Ab

  • Gliese 49 Ab is an exoplanet orbiting the star Gliese 49 A, located about 32.1 light-years ( 9.9 pc) away from Solar System. Its discovery was publicly announced on 2019.
  • The host star Gliese 49 A has apparent magnitude of 9.6, with absolute magnitude of 9.6.
  • It is 0.5 times more massive and 0.5 times bigger compared with our Sun. The surface temperature is 3805 with its spectral types of M1.5V
  • In this planetary system, the extrasolar planet Gliese 49 Ab orbits around the star Gliese 49 A every 13.9 days with its orbital distance of 0.09 AU ( 13538607.3 km)
  • (Projected orbit of Gliese 49 Ab around its host star Gliese 49 A)


  • The Star Gliese 49 A 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.160 AU ( 23976640.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.222 AU ( 33141983.3 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.338 AU ( 50501048.2 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.497 AU ( 74314504.7 km)
  • Radiation at Planetary Boundary of Gliese 49 Ab : 8195.36 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Gliese 49 A)



  • Kopparapu Recent Venus for Star Gliese 49 A distance : 0.180 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Gliese 49 A distance : 0.228 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Gliese 49 A distance : 0.220 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Gliese 49 A distance : 0.242 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Gliese 49 A distance : 0.437 AU
  • Kopparapu Outer Boundary for Early Mars for Star Gliese 49 A distance : 0.461 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Gliese 49 A)



  • Original Kopparapu Recent Venus for Star Gliese 49 A distance : 0.178 AU
  • Original Kopparapu Runaway Greenhouse for Star Gliese 49 A distance : 0.236 AU
  • Original Kopparapu Moist Greenhouse for Star Gliese 49 A distance : 0.236 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Gliese 49 A distance : 0.444 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Gliese 49 A distance : 0.462 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Gliese 49 A)



    (Position in Stellar Map of star Gliese 49 A and its Exoplanet Gliese 49 Ab)



    (Zoomed position in Stellar Map of star Gliese 49 A and its Exoplanet Gliese 49 Ab (zoom level 3))

    (Synthetic Spectrum of star Gliese 49 A*)
    *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