Imaginary Picture of BD+26 1888 b

Display orbital revolution of BD+26 1888 b around the hoststar BD+26 1888
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Exoplanet Name : BD+26 1888 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 26.0000 (Mjup) 8266.3880 (Mearth)
Semi Major Axis / Orbital Distance Calculated 1.1900 (AU) 1.1900 (AU Est.)
Eccentricity : 0.2675
Orbital Period(Yrs) 1.4696
Orbital Period(Observed/Estimated) 536.78 (Days Obs.) 543.88 (Days Est.)
Surface Gravity (G Earth) 79.8313
Star Radiation at Atmospheric Boundary: 187.2 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 165.1 (K)
Blackbody T 0.3(K) 155.0 (K)
Blackbody T 0.7(K) 125.4 (K)
Tidally Locked Blackbody T 0.1(K) 196.3 (K)
Tidally Locked Blackbody T 0.3(K) 184.4 (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 : BD+26 1888
Alternate Name :
Star Distance(LY) : 134.4
Stellar Radius(Rsun) : 0.7 (Rsun Estimated)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 0.0 (GY)
Temperature : 4748 (K)
Spectral type : K7
UV portion[%]: 2.3
Visible portion[%]: 34.9
IR portion[%]: 62.8
Metalicity : 0.0
Absolute Magnitude: 6.7
Apparent Magnitude: 9.8
Right Ascension(RA) 135.6277
Declination (DEC) 25.8894
Hubble Space Telescope Guide Star Catalog (GSC) ID 01953-01518
Discovered by
Discovery Paper - Authors 0
Discovery Paper - Title 0
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=BD%2B26+1888+&submit=SIMBAD+search
Open Exoplanet Database Link 0
BD+26 1888 b
BD+26 1888 b

  • BD+26 1888 b is an exoplanet orbiting the star BD+26 1888, located about 134.4 light-years (41.2 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star BD+26 1888 has apparent magnitude of 9.8, with absolute magnitude of 6.7.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4748 with its spectral types of K7
  • In this planetary system, the extrasolar planet BD+26 1888 b orbits around the star BD+26 1888 every 536.8 days with its orbital distance of 1.19 AU ( 178021466.1 km)
  • (Projected orbit of BD+26 1888 b around its host star BD+26 1888)


  • The Star BD+26 1888 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.319 AU ( 47648479.7 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.440 AU ( 65862651.0 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.671 AU ( 100360104.7 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 0.987 AU ( 147684290.6 km)
  • Radiation at Planetary Boundary of BD+26 1888 b : 187.19 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star BD+26 1888)



  • Kopparapu Recent Venus for Star BD+26 1888 distance : 0.348 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star BD+26 1888 distance : 0.441 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star BD+26 1888 distance : 0.426 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star BD+26 1888 distance : 0.468 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star BD+26 1888 distance : 0.808 AU
  • Kopparapu Outer Boundary for Early Mars for Star BD+26 1888 distance : 0.852 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star BD+26 1888)



  • Original Kopparapu Recent Venus for Star BD+26 1888 distance : 0.344 AU
  • Original Kopparapu Runaway Greenhouse for Star BD+26 1888 distance : 0.455 AU
  • Original Kopparapu Moist Greenhouse for Star BD+26 1888 distance : 0.455 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star BD+26 1888 distance : 0.821 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star BD+26 1888 distance : 0.854 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star BD+26 1888)



    (Position in Stellar Map of star BD+26 1888 and its Exoplanet BD+26 1888 b)



    (Zoomed position in Stellar Map of star BD+26 1888 and its Exoplanet BD+26 1888 b (zoom level 3))

    (Synthetic Spectrum of star BD+26 1888*)
    *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