Imaginary Picture of mu Ara c
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Exoplanet Name : mu Ara c
Alternate Name : HD 160691 c
Radius (Rjup / Re): 0.1990 (Rjup) 2.2310 (Rearth)
Mass (Mjup / Me): 0.0332 (Mjup) 10.5587 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0909 (AU) 0.0909 (AU Est.)
Eccentricity : 0.1720
Orbital Period(Yrs) 0.0264
Orbital Period(Observed/Estimated) 9.64 (Days Obs.) 9.64 (Days Est.)
Star Radiation at Atmospheric Boundary: 242623.6 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 990.5 (K)
Blackbody T 0.3(K) 930.2 (K)
Blackbody T 0.7(K) 752.7 (K)
Tidally Locked Blackbody T 0.1(K) 1178.0 (K)
Tidally Locked Blackbody T 0.3(K) 1106.2 (K)
Size Class: sub-Neptune-size
Mass Class:
Detection Type : Radial Velocity
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Not habitable
Habitability by Kopparapu: Not habitable
Star Name : mu Ara
Alternate Name :
Star Distance(LY) : 50.6
Stellar Radius(Rsun) : 1.2 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 6.4 (GY)
Temperature : 5700 (K)
Spectral type : G3 IV-V
Metalicity : 0.3
Absolute Magnitude: 4.2
Apparent Magnitude: 5.2
Right Ascension(RA) 266.0333
Declination (DEC) -51.8339
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=mu+Ara+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/mu%20Arae%20c/
mu Ara c
mu Ara c

  • mu Ara c is an exoplanet orbiting the star mu Ara, located about 50.6 light-years (15.5 pc) away from Solar System. Its discovery was publicly announced on 2004.
  • The host star mu Ara has apparent magnitude of 5.2, with absolute magnitude of 4.2.
  • It is 1.1 times more massive and 1.2 times bigger compared with our Sun. The surface temperature is 5700 with its spectral types of G3 IV-V
  • In this planetary system, the extrasolar planet mu Ara c orbits around the star mu Ara every 9.6 days with its orbital distance of 0.09 AU ( 13604430.4 km)
  • (Projected orbit of mu Ara c around its host star mu Ara)


  • The Star mu Ara 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.876 AU ( 131092297.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 1.211 AU ( 181203813.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.846 AU ( 276114511.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.716 AU ( 406314600.1 km)
  • Radiation at Planetary Boundary of mu Ara c : 242623.60 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star mu Ara)



  • Kopparapu Recent Venus for Star mu Ara distance : 0.912 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star mu Ara distance : 1.156 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star mu Ara distance : 1.116 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star mu Ara distance : 1.224 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star mu Ara distance : 2.045 AU
  • Kopparapu Outer Boundary for Early Mars for Star mu Ara distance : 2.157 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star mu Ara)



  • Original Kopparapu Recent Venus for Star mu Ara distance : 0.912 AU
  • Original Kopparapu Runaway Greenhouse for Star mu Ara distance : 1.188 AU
  • Original Kopparapu Moist Greenhouse for Star mu Ara distance : 1.207 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star mu Ara distance : 2.081 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star mu Ara distance : 2.164 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star mu Ara)



    (Position in Stellar Map of star mu Ara and its Exoplanet mu Ara c)



    (Zoomed position in Stellar Map of star mu Ara and its Exoplanet mu Ara c (zoom level 3))