Imaginary Picture of HAT-P-51 b

Display orbital revolution of HAT-P-51 b around the hoststar HAT-P-51
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Exoplanet Name : HAT-P-51 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 1.2930 (Rjup) 14.4932 (Rearth)
Mass (Mjup / Me): 0.3090 (Mjup) 98.2428 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0507 (AU) 0.0507 (AU Est.)
Eccentricity : 0.1230
Orbital Period(Yrs) 0.0115
Orbital Period(Observed/Estimated) 4.22 (Days Obs.) 4.22 (Days Est.)
Surface Gravity (G Earth) 0.4677
Star Radiation at Atmospheric Boundary: 455962.3 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1159.8 (K)
Blackbody T 0.3(K) 1089.2 (K)
Blackbody T 0.7(K) 881.2 (K)
Tidally Locked Blackbody T 0.1(K) 1379.2 (K)
Tidally Locked Blackbody T 0.3(K) 1295.2 (K)
Size Class: Super-Jupiter-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 : HAT-P-51
Alternate Name : "2MASS 01241564+3248387, GSC 2296-00637"
Star Distance(LY) : 1532.9
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 1.0 (Msun Estimated)
Star Age : 8.2 (GY)
Temperature : 5449 (K)
Spectral type : G7
UV portion[%]: 6.6
Visible portion[%]: 42.8
IR portion[%]: 50.5
Metalicity : 0.3
Absolute Magnitude: 5.1
Apparent Magnitude: 13.4
Right Ascension(RA) 21.0652
Declination (DEC) 32.8108
Hubble Space Telescope Guide Star Catalog (GSC) ID 02296-00637
Discovered by
Discovery Paper - Authors "Joel D. Hartman (Princeton), Waqas Bhatti (Princeton), G_sp_r _. Bakos (Princeton), Allyson Bieryla (CfA), G_za Kov_cs (Konkoly), David W. Latham (CfA), Zoltan Csubry (Princeton), Miguel de Val-Borro (Princeton), Kaloyan Penev (Princeton), Lars A. Buchhave (CfA), Guillermo Torres (CfA), Andrew W. Howard (IfA), Geoff W. Marcy (UC Berkeley), John A. Johnson (CfA), Howard Isaacson (UC Berkeley), Bun'ei Sato (Tokyo Inst. of Tech.), Isabelle Boisse (Aix Marseille Universit_), Emilio Falco (CfA), Mark E. Everett (NOAO), Tamas Szklenar (Hungarian Astronomical Association), Benjamin J. Fulton (IfA), Avi Shporer (JPL), Tamas Kov_cs (Konkoly), Terese Hansen (Landessternwarte), Bence B_ky (Google), Robert W. Noyes (CfA), J_zsef L_z_r (Hungarian Astronomical Association), et al. (2 additional authors not shown) "
Discovery Paper - Title "HAT-P-50b, HAT-P-51b, HAT-P-52b, and HAT-P-53b: Three Transiting Hot Jupiters and a Transiting Hot Saturn From the HATNet Survey"
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HAT-P-51+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/HAT-P-51%20b/
HAT-P-51 b
HAT-P-51 b

  • HAT-P-51 b is an exoplanet orbiting the star HAT-P-51, located about 1532.9 light-years (470.0 pc) away from Solar System. Its discovery was publicly announced on 2015.
  • The host star HAT-P-51 has apparent magnitude of 13.4, with absolute magnitude of 5.1.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5449 with its spectral types of G7
  • In this planetary system, the extrasolar planet HAT-P-51 b orbits around the star HAT-P-51 every 4.2 days with its orbital distance of 0.05 AU ( 7583116.1 km)
  • (Projected orbit of HAT-P-51 b around its host star HAT-P-51)


  • The Star HAT-P-51 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.670 AU ( 100171103.4 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.926 AU ( 138462642.8 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.410 AU ( 210986425.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 2.075 AU ( 310475768.4 km)
  • Radiation at Planetary Boundary of HAT-P-51 b : 455962.28 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star HAT-P-51)



  • Kopparapu Recent Venus for Star HAT-P-51 distance : 0.708 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star HAT-P-51 distance : 0.896 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star HAT-P-51 distance : 0.865 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star HAT-P-51 distance : 0.949 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-51 distance : 1.598 AU
  • Kopparapu Outer Boundary for Early Mars for Star HAT-P-51 distance : 1.685 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star HAT-P-51)



  • Original Kopparapu Recent Venus for Star HAT-P-51 distance : 0.704 AU
  • Original Kopparapu Runaway Greenhouse for Star HAT-P-51 distance : 0.922 AU
  • Original Kopparapu Moist Greenhouse for Star HAT-P-51 distance : 0.932 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star HAT-P-51 distance : 1.625 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star HAT-P-51 distance : 1.690 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star HAT-P-51)



    (Position in Stellar Map of star HAT-P-51 and its Exoplanet HAT-P-51 b)



    (Zoomed position in Stellar Map of star HAT-P-51 and its Exoplanet HAT-P-51 b (zoom level 3))

    (Synthetic Spectrum of star HAT-P-51*)
    *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