Imaginary Picture of TOI-1773 c

Display orbital revolution of TOI-1773 c around the hoststar TOI-1773
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Exoplanet Name : TOI-1773 c
Alternate Name : 55 Cnc d
Status : Confirmed
Radius (Rjup / Re): 0.9078 (Rjup) 10.1759 (Rearth)
Mass (Mjup / Me): 3.8400 (Mjup) 1220.8819 (Mearth)
Semi Major Axis / Orbital Distance Calculated 5.4460 (AU) 5.4460 (AU Est.)
Eccentricity : 0.0269
Orbital Period(Yrs) 15.2609
Orbital Period(Observed/Estimated) 5574.20 (Days Obs.) 4607.59 (Days Est.)
Surface Gravity (G Earth) 11.7905
Star Radiation at Atmospheric Boundary: 28.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 103.5 (K)
Blackbody T 0.3(K) 97.2 (K)
Blackbody T 0.7(K) 78.7 (K)
Tidally Locked Blackbody T 0.1(K) 123.1 (K)
Tidally Locked Blackbody T 0.3(K) 115.6 (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 : TOI-1773
Alternate Name : 55 Cnc
Star Distance(LY) : 40.2
Stellar Radius(Rsun) : 1.0 (Rsun Measured)
Stellar Mass(Msun) : 1.0 (Msun Measured) 0.7 (Msun Estimated)
Star Age : 10.2 (GY)
Temperature : 5196 (K)
Spectral type : K0IV-V
UV portion[%]: 5.0
Visible portion[%]: 40.1
IR portion[%]: 55.0
Metalicity : 0.3
Absolute Magnitude: 5.5
Apparent Magnitude: 6.0
Right Ascension(RA) 133.1542
Declination (DEC) 28.3339
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors
Discovery Paper - Title
Discovery Paper - Journal
Discovery Paper - URL
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=55+Cnc+&submit=SIMBAD+search
Open Exoplanet Database Link
TOI-1773 c
TOI-1773 c

  • TOI-1773 c is an exoplanet orbiting the star TOI-1773, located about 40.2 light-years (12.3 pc) away from Solar System. Its discovery was publicly announced on 2002.
  • The host star TOI-1773 has apparent magnitude of 6.0, with absolute magnitude of 5.5.
  • It is 1.0 times more massive and 1.0 times bigger compared with our Sun. The surface temperature is 5196 with its spectral types of K0IV-V
  • In this planetary system, the extrasolar planet TOI-1773 c orbits around the star TOI-1773 every 5574.2 days with its orbital distance of 5.45 AU ( 814710003.8 km)
  • (Projected orbit of TOI-1773 c around its host star TOI-1773)


  • The Star TOI-1773 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.573 AU ( 85747698.6 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.792 AU ( 118525728.1 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 1.207 AU ( 180606979.9 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.777 AU ( 265771082.8 km)
  • Radiation at Planetary Boundary of TOI-1773 c : 28.95 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star TOI-1773)



  • Kopparapu Recent Venus for Star TOI-1773 distance : 0.614 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star TOI-1773 distance : 0.777 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star TOI-1773 distance : 0.751 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star TOI-1773 distance : 0.824 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1773 distance : 1.399 AU
  • Kopparapu Outer Boundary for Early Mars for Star TOI-1773 distance : 1.475 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star TOI-1773)



  • Original Kopparapu Recent Venus for Star TOI-1773 distance : 0.609 AU
  • Original Kopparapu Runaway Greenhouse for Star TOI-1773 distance : 0.801 AU
  • Original Kopparapu Moist Greenhouse for Star TOI-1773 distance : 0.806 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star TOI-1773 distance : 1.422 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star TOI-1773 distance : 1.479 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star TOI-1773)



    (Position in Stellar Map of star TOI-1773 and its Exoplanet TOI-1773 c)



    (Zoomed position in Stellar Map of star TOI-1773 and its Exoplanet TOI-1773 c (zoom level 3))

    (Synthetic Spectrum of star TOI-1773*)
    *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