Imaginary Picture of BD+15 2940 b

Display orbital revolution of BD+15 2940 b around the hoststar BD+15 2940
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Exoplanet Name : BD+15 2940 b
Alternate Name :
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 1.1100 (Mjup) 352.9112 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.5390 (AU) 0.5390 (AU Est.)
Eccentricity : 0.2600
Orbital Period(Yrs) 0.3764
Orbital Period(Observed/Estimated) 137.48 (Days Obs.) 137.81 (Days Est.)
Surface Gravity (G Earth) 3.4082
Star Radiation at Atmospheric Boundary: 482590.4 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 1176.4 (K)
Blackbody T 0.3(K) 1104.7 (K)
Blackbody T 0.7(K) 893.8 (K)
Tidally Locked Blackbody T 0.1(K) 1398.9 (K)
Tidally Locked Blackbody T 0.3(K) 1313.7 (K)
Size Class: Jupiter-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 : BD+15 2940
Alternate Name :
Star Distance(LY) : 1538.5
Stellar Radius(Rsun) : 14.7 (Rsun Measured)
Stellar Mass(Msun) : 1.1 (Msun Measured) 1.1 (Msun Estimated)
Star Age : 7.1 (GY)
Temperature : 4796 (K)
Spectral type : K0
UV portion[%]: 2.4
Visible portion[%]: 35.4
IR portion[%]: 62.1
Metalicity : 0.3
Absolute Magnitude: 0.8
Apparent Magnitude: 9.2
Right Ascension(RA) 240.0956
Declination (DEC) 15.5469
Hubble Space Telescope Guide Star Catalog (GSC) ID 01503-01050
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%2B15+2940+&submit=SIMBAD+search
Open Exoplanet Database Link 0
BD+15 2940 b
BD+15 2940 b

  • BD+15 2940 b is an exoplanet orbiting the star BD+15 2940, located about 1538.5 light-years (471.7 pc) away from Solar System. Its discovery was publicly announced on 2013.
  • The host star BD+15 2940 has apparent magnitude of 9.2, with absolute magnitude of 0.8.
  • It is 1.1 times more massive and 14.7 times bigger compared with our Sun. The surface temperature is 4796 with its spectral types of K0
  • In this planetary system, the extrasolar planet BD+15 2940 b orbits around the star BD+15 2940 every 137.5 days with its orbital distance of 0.54 AU ( 80633252.3 km)
  • (Projected orbit of BD+15 2940 b around its host star BD+15 2940)


  • The Star BD+15 2940 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 7.325 AU ( 1095806307.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 10.125 AU ( 1514690685.9 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 15.428 AU ( 2308053405.0 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 22.704 AU ( 3396401694.7 km)
  • Radiation at Planetary Boundary of BD+15 2940 b : 482590.37 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star BD+15 2940)



  • Kopparapu Recent Venus for Star BD+15 2940 distance : 7.998 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star BD+15 2940 distance : 10.125 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star BD+15 2940 distance : 9.780 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star BD+15 2940 distance : 10.736 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star BD+15 2940 distance : 18.508 AU
  • Kopparapu Outer Boundary for Early Mars for Star BD+15 2940 distance : 19.523 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star BD+15 2940)



  • Original Kopparapu Recent Venus for Star BD+15 2940 distance : 7.900 AU
  • Original Kopparapu Runaway Greenhouse for Star BD+15 2940 distance : 10.442 AU
  • Original Kopparapu Moist Greenhouse for Star BD+15 2940 distance : 10.453 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star BD+15 2940 distance : 18.815 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star BD+15 2940 distance : 19.566 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star BD+15 2940)



    (Position in Stellar Map of star BD+15 2940 and its Exoplanet BD+15 2940 b)



    (Zoomed position in Stellar Map of star BD+15 2940 and its Exoplanet BD+15 2940 b (zoom level 3))

    (Synthetic Spectrum of star BD+15 2940*)
    *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