Imaginary Picture of Pr 0211 b

Display orbital revolution of Pr 0211 b around the hoststar Pr 0211
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Exoplanet Name : Pr 0211 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 1.8800 (Mjup) 597.7234 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0318 (AU) 0.0318 (AU Est.)
Eccentricity : 0.0170
Orbital Period(Yrs) 0.0059
Orbital Period(Observed/Estimated) 2.15 (Days Obs.) 2.15 (Days Est.)
Surface Gravity (G Earth) 5.7724
Star Radiation at Atmospheric Boundary: 757042.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1316.5 (K)
Blackbody T 0.3(K) 1236.3 (K)
Blackbody T 0.7(K) 1000.3 (K)
Tidally Locked Blackbody T 0.1(K) 1565.6 (K)
Tidally Locked Blackbody T 0.3(K) 1470.3 (K)
Size Class: Jupiter-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 : Pr 0211
Alternate Name :
Star Distance(LY) : 554.5
Stellar Radius(Rsun) : 0.8 (Rsun Measured)
Stellar Mass(Msun) : 0.9 (Msun Measured) 0.9 (Msun Estimated)
Star Age : 0.8 (GY)
Temperature : 5500 (K)
Spectral type : G9
UV portion[%]: 6.9
Visible portion[%]: 43.2
IR portion[%]: 49.9
Metalicity : 0.0
Absolute Magnitude: 6.0
Apparent Magnitude: 12.2
Right Ascension(RA) 130.5458
Declination (DEC) 19.2769
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "L. Malavolta, V. Nascimbeni, G. Piotto, S. N. Quinn, L. Borsato, V. Granata, A.S. Bonomo, F. Marzari, L.R. Bedin, M. Rainer, S. Desidera, A.F. Lanza, E. Poretti, A. Sozzetti, R. J. White, D. W. Latham, A. Cunial, M. Libralato, D. Nardiello, C. Boccato, R.U. Claudi, R. Cosentino, E. Covino, R. Gratton, A. Maggio, G. Micela, E. Molinari, I. Pagano, R. Smareglia, L. Affer, G. Andreuzzi, A. Aparicio, S. Benatti, A. Bignamini, F. Borsa, M. Damasso, L. Di Fabrizio, A. Harutyunyan, M. Esposito, A.F.M. Fiorenzano, D. Gandolfi, P. Giacobbe, J.I. Gonz_lez Hern_ndez, J. Maldonado, S. Masiero, M. Molinaro, M. Pedani, G. Scandariato"
Discovery Paper - Title The GAPS programme with HARPS-N at TNG XI. Pr~0211 in M~44: the first multi-planet system in an open cluster
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Pr0211%20b/
Pr 0211 b
Pr 0211 b
  • Pr 0211 b is an exoplanet orbiting the star Pr 0211, located about 554.5 light-years (170.0 pc) away from Solar System. Its discovery was publicly announced on 2012.
  • The host star Pr 0211 has apparent magnitude of 12.2, with absolute magnitude of 6.0.
  • It is 0.9 times more massive and 0.8 times bigger compared with our Sun. The surface temperature is 5500 with its spectral types of G9
  • In this planetary system, the extrasolar planet Pr 0211 b orbits around the star Pr 0211 every 2.1 days with its orbital distance of 0.03 AU ( 4763196.2 km)
    • (Projected orbit of Pr 0211 b around its host star Pr 0211)


  • The Star Pr 0211 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.542 AU ( 81075381.5 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.749 AU ( 112067364.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.141 AU ( 170765863.5 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.680 AU ( 251289448.9 km)
  • Radiation at Planetary Boundary of Pr 0211 b : 757042.86 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Pr 0211)



  • Kopparapu Recent Venus for Star Pr 0211 distance : 0.571 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Pr 0211 distance : 0.723 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Pr 0211 distance : 0.698 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Pr 0211 distance : 0.766 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Pr 0211 distance : 1.287 AU
  • Kopparapu Outer Boundary for Early Mars for Star Pr 0211 distance : 1.358 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Pr 0211)



  • Original Kopparapu Recent Venus for Star Pr 0211 distance : 0.569 AU
  • Original Kopparapu Runaway Greenhouse for Star Pr 0211 distance : 0.744 AU
  • Original Kopparapu Moist Greenhouse for Star Pr 0211 distance : 0.753 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Pr 0211 distance : 1.309 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Pr 0211 distance : 1.362 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Pr 0211)



    (Position in Stellar Map of star Pr 0211 and its Exoplanet Pr 0211 b)



    (Zoomed position in Stellar Map of star Pr 0211 and its Exoplanet Pr 0211 b (zoom level 3))

    (Synthetic Spectrum of star Pr 0211*)
    *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