Star system
39 Leonis
Economy
Industrial / Agriculture
Government
Democracy
Allegiance
Federation
Star type
Class F star Scoopable
Coordinates
21.97 / 61.31 / -35.88
Permit required
No
Powerplay
Exploited
Powers
︎ 39 Leonis - Class F star
Body distance-Solar masses1.2383Solar radius1.1266︎ 39 Leonis A 1 - High metal content world Landable
Body distance148 LsEarth masses0.2681Radius4,062 kmGravity0.66 gSurface temperature557 K (284°C/543°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 0.8%︎ Cadmium: 1.7%︎ Niobium: 1.5%︎ Arsenic: 2.0%︎ Chromium: 9.8%︎ Manganese: 9.0%︎ Carbon: 13.0%︎ Iron: 21.9%︎ Nickel: 16.5%︎ Phosphorus: 8.3%︎ Sulphur: 15.4%︎ 39 Leonis A 2 - High metal content world
Body distance275 LsEarth masses0.3601Radius4,438 kmGravity0.74 gSurface temperature431 K (157°C/315°F)Surface pressure0.42 atmVolcanismAtmosphereSulphur dioxideTerraforming︎ 39 Leonis A 2 a - Rocky body Landable
Body distance275 LsEarth masses0.0227Radius1,939 kmGravity0.24 gSurface temperature415 K (142°C/288°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 1.3%︎ Cadmium: 1.5%︎ Tin: 1.2%︎ Chromium: 8.9%︎ Germanium: 5.2%︎ Zinc: 5.4%︎ Carbon: 14.8%︎ Iron: 19.7%︎ Nickel: 14.9%︎ Phosphorus: 9.5%︎ Sulphur: 17.6%︎ 39 Leonis A 3 - Earth-like world
Body distance881 LsEarth masses1.0514Radius6,168 kmGravity1.12 gSurface temperature308 K (35°C/94°F)Surface pressure2.30 atmVolcanismRocky magmaAtmosphereSuitable for water-based lifeTerraformingTerraformed︎ 39 Leonis A 4 - High metal content world
Body distance1,127 LsEarth masses0.5558Radius5,089 kmGravity0.87 gSurface temperature226 K (-47°C/-52°F)Surface pressure3.43 atmVolcanismAtmosphereNitrogenTerraformingTerraformable︎ 39 Leonis A 5 - High metal content world
Body distance1,439 LsEarth masses0.5804Radius5,157 kmGravity0.89 gSurface temperature264 K (-9°C/15°F)Surface pressure3.56 atmVolcanismAtmosphereMethane-richTerraforming︎ 39 Leonis A 6 - High metal content world
Body distance1,444 LsEarth masses0.3509Radius4,417 kmGravity0.73 gSurface temperature218 K (-55°C/-67°F)Surface pressure2.41 atmVolcanismAtmosphereCarbon dioxide-richTerraforming︎ Gl 387 B - Class M star
Body distance12,793 LsSolar masses0.4297Solar radius0.5942︎ 39 Leonis B 3 - High metal content world Landable
Body distance12,747 LsEarth masses0.0823Radius2,796 kmGravity0.43 gSurface temperature436 K (163°C/326°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.6%︎ Cadmium: 1.6%︎ Tungsten: 1.2%︎ Chromium: 9.5%︎ Manganese: 8.7%︎ Zinc: 5.7%︎ Carbon: 12.5%︎ Iron: 21.2%︎ Nickel: 16.0%︎ Phosphorus: 8.0%︎ Sulphur: 14.9%︎ 39 Leonis B 4 - High metal content world Landable
Body distance12,795 LsEarth masses0.1717Radius3,527 kmGravity0.56 gSurface temperature351 K (78°C/173°F)Surface pressure0.00 atmVolcanismAtmosphereThin Sulphur dioxideTerraforming︎ Technetium: 0.8%︎ Cadmium: 1.6%︎ Niobium: 1.4%︎ Chromium: 9.5%︎ Manganese: 8.8%︎ Vanadium: 5.2%︎ Carbon: 12.5%︎ Iron: 21.2%︎ Nickel: 16.0%︎ Phosphorus: 8.0%︎ Sulphur: 14.9%︎ 39 Leonis B 1 - High metal content world Landable
Body distance12,806 LsEarth masses0.0047Radius1,100 kmGravity0.16 gSurface temperature688 K (415°C/780°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 2.7%︎ Yttrium: 1.5%︎ Mercury: 1.1%︎ Molybdenum: 1.6%︎ Germanium: 5.2%︎ Zirconium: 2.9%︎ Carbon: 14.7%︎ Iron: 24.8%︎ Nickel: 18.7%︎ Phosphorus: 9.4%︎ Sulphur: 17.5%︎ 39 Leonis B 2 - High metal content world Landable
Body distance12,824 LsEarth masses0.0776Radius2,743 kmGravity0.42 gSurface temperature586 K (313°C/596°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.3%︎ Niobium: 1.5%︎ Tin: 1.4%︎ Chromium: 9.6%︎ Germanium: 4.4%︎ Manganese: 8.8%︎ Carbon: 12.6%︎ Iron: 21.3%︎ Nickel: 16.1%︎ Phosphorus: 8.1%︎ Sulphur: 15.0%︎ 39 Leonis B 5 - High metal content world Landable
Body distance12,901 LsEarth masses0.1460Radius3,355 kmGravity0.53 gSurface temperature325 K (52°C/125°F)Surface pressure0.01 atmVolcanismAtmosphereThin Sulphur dioxideTerraforming︎ Yttrium: 1.3%︎ Mercury: 1.0%︎ Molybdenum: 1.4%︎ Chromium: 9.9%︎ Germanium: 4.6%︎ Zinc: 6.0%︎ Carbon: 13.1%︎ Iron: 22.1%︎ Nickel: 16.7%︎ Phosphorus: 8.4%︎ Sulphur: 15.6%︎ 39 Leonis B 6 - High metal content world
Body distance12,994 LsEarth masses0.7168Radius5,498 kmGravity0.96 gSurface temperature358 K (85°C/185°F)Surface pressure5.22 atmVolcanismAtmosphereThick Ammonia-richTerraforming︎ 39 Leonis B 7 - High metal content world
Body distance13,133 LsEarth masses0.9003Radius5,889 kmGravity1.06 gSurface temperature433 K (160°C/320°F)Surface pressure14.26 atmVolcanismAtmosphereThick Ammonia-richTerraforming