Star system
HD 391
Economy
Government
Allegiance
Independent
Star type
Class M star (red giant) Scoopable
Coordinates
-1080.47 / -2593.28 / -116.63
Permit required
No
︎ HD 391 - Class M star (red giant)
Body distance-Solar masses0.4063Solar radius77.3691︎ HD 391 1 e - Rocky body Landable
Body distance884 LsEarth masses0.0012Radius752 kmGravity0.09 gSurface temperature892 K (619°C/1,146°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.5%︎ Molybdenum: 1.2%︎ Tin: 1.1%︎ Chromium: 8.4%︎ Manganese: 7.7%︎ Vanadium: 4.6%︎ Carbon: 15.4%︎ Iron: 18.7%︎ Nickel: 14.2%︎ Phosphorus: 9.8%︎ Sulphur: 18.3%︎ HD 391 1 d - Rocky body Landable
Body distance885 LsEarth masses0.0012Radius742 kmGravity0.09 gSurface temperature894 K (621°C/1,149°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Selenium: 3.0%︎ Cadmium: 1.5%︎ Mercury: 0.9%︎ Chromium: 8.8%︎ Vanadium: 4.8%︎ Carbon: 16.0%︎ Iron: 19.6%︎ Nickel: 14.8%︎ Phosphorus: 10.3%︎ Sulphur: 19.1%︎ HD 391 1 c - Rocky body Landable
Body distance891 LsEarth masses0.0004Radius507 kmGravity0.06 gSurface temperature895 K (622°C/1,152°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 0.7%︎ Mercury: 0.8%︎ Tin: 1.1%︎ Chromium: 8.7%︎ Manganese: 8.0%︎ Zirconium: 2.2%︎ Carbon: 15.8%︎ Iron: 19.3%︎ Nickel: 14.6%︎ Phosphorus: 10.1%︎ Sulphur: 18.8%︎ HD 391 1 - Class IV gas giant
Body distance893 LsRing/belt typeRocky (Pristine)Earth masses628.3990Radius75,706 kmGravity4.46 gSurface temperature961 K (688°C/1,270°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HD 391 1 b - Rocky body Landable
Body distance896 LsEarth masses0.0004Radius520 kmGravity0.06 gSurface temperature897 K (624°C/1,155°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.1%︎ Cadmium: 1.4%︎ Niobium: 1.3%︎ Chromium: 8.3%︎ Germanium: 5.3%︎ Manganese: 7.6%︎ Carbon: 15.1%︎ Iron: 18.4%︎ Nickel: 13.9%︎ Phosphorus: 9.7%︎ Sulphur: 17.9%︎ HD 391 1 a - Rocky body Landable
Body distance897 LsEarth masses0.0008Radius650 kmGravity0.08 gSurface temperature899 K (626°C/1,158°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Selenium: 3.0%︎ Mercury: 0.9%︎ Tungsten: 1.1%︎ Manganese: 8.2%︎ Vanadium: 4.9%︎ Carbon: 16.2%︎ Iron: 19.8%︎ Nickel: 15.0%︎ Phosphorus: 10.4%︎ Sulphur: 19.3%︎ HD 391 2 e - Rocky body Landable
Body distance1,275 LsEarth masses0.0003Radius464 kmGravity0.05 gSurface temperature738 K (464°C/868°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.5%︎ Mercury: 0.8%︎ Molybdenum: 1.2%︎ Chromium: 8.4%︎ Germanium: 5.3%︎ Manganese: 7.7%︎ Carbon: 15.3%︎ Iron: 18.7%︎ Nickel: 14.1%︎ Phosphorus: 9.8%︎ Sulphur: 18.2%︎ HD 391 2 b - Rocky body Landable
Body distance1,277 LsEarth masses0.0002Radius419 kmGravity0.05 gSurface temperature738 K (464°C/868°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 1.4%︎ Molybdenum: 1.2%︎ Tungsten: 1.0%︎ Chromium: 8.6%︎ Germanium: 5.4%︎ Vanadium: 4.7%︎ Carbon: 15.6%︎ Iron: 19.0%︎ Nickel: 14.4%︎ Phosphorus: 10.0%︎ Sulphur: 18.6%︎ HD 391 2 - High metal content world
Body distance1,278 LsEarth masses3.9179Radius8,995 kmGravity1.97 gSurface temperature2,629 K (2,356°C/4,272°F)Surface pressure666.85 atmVolcanismMajor Silicate vapour geysersAtmosphereHot Thick Carbon dioxideTerraforming︎ HD 391 2 d - Rocky body Landable
Body distance1,279 LsEarth masses0.0005Radius574 kmGravity0.07 gSurface temperature738 K (464°C/868°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Niobium: 1.4%︎ Tungsten: 1.1%︎ Germanium: 5.6%︎ Vanadium: 4.9%︎ Zinc: 5.4%︎ Carbon: 16.1%︎ Iron: 19.8%︎ Nickel: 15.0%︎ Phosphorus: 10.3%︎ Sulphur: 19.2%︎ HD 391 2 c - Rocky body Landable
Body distance1,279 LsEarth masses0.0002Radius375 kmGravity0.04 gSurface temperature738 K (464°C/868°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Mercury: 0.8%︎ Niobium: 1.3%︎ Arsenic: 2.4%︎ Chromium: 8.6%︎ Manganese: 7.9%︎ Carbon: 15.6%︎ Iron: 19.1%︎ Nickel: 14.4%︎ Phosphorus: 10.0%︎ Sulphur: 18.6%︎ HD 391 2 a - Rocky body Landable
Body distance1,279 LsEarth masses0.0002Radius394 kmGravity0.05 gSurface temperature738 K (464°C/868°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Molybdenum: 1.2%︎ Tin: 1.1%︎ Arsenic: 2.4%︎ Chromium: 8.6%︎ Manganese: 7.9%︎ Carbon: 15.6%︎ Iron: 19.0%︎ Nickel: 14.4%︎ Phosphorus: 10.0%︎ Sulphur: 18.6%︎ HD 391 2 f - Rocky body Landable
Body distance1,280 LsEarth masses0.0003Radius483 kmGravity0.06 gSurface temperature738 K (464°C/868°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 0.7%︎ Molybdenum: 1.2%︎ Tungsten: 1.0%︎ Chromium: 8.4%︎ Germanium: 5.3%︎ Manganese: 7.7%︎ Carbon: 15.2%︎ Iron: 18.6%︎ Nickel: 14.1%︎ Phosphorus: 9.8%︎ Sulphur: 18.1%︎ HD 391 2 g - Rocky body Landable
Body distance1,284 LsEarth masses0.0002Radius419 kmGravity0.05 gSurface temperature738 K (464°C/868°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Selenium: 3.0%︎ Cadmium: 1.5%︎ Tungsten: 1.1%︎ Manganese: 8.1%︎ Vanadium: 4.8%︎ Carbon: 16.1%︎ Iron: 19.7%︎ Nickel: 14.9%︎ Phosphorus: 10.3%︎ Sulphur: 19.2%︎ HD 391 3 f - Rocky body Landable
Body distance1,688 LsEarth masses0.0017Radius838 kmGravity0.10 gSurface temperature641 K (368°C/695°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Selenium: 3.1%︎ Cadmium: 1.6%︎ Tungsten: 1.1%︎ Germanium: 5.8%︎ Vanadium: 5.0%︎ Carbon: 16.5%︎ Iron: 20.2%︎ Nickel: 15.3%︎ Phosphorus: 10.6%︎ Sulphur: 19.7%︎ HD 391 3 d - Rocky body Landable
Body distance1,690 LsEarth masses0.0004Radius520 kmGravity0.06 gSurface temperature641 K (368°C/695°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.5%︎ Molybdenum: 1.3%︎ Tin: 1.2%︎ Manganese: 8.3%︎ Vanadium: 4.9%︎ Zirconium: 2.3%︎ Carbon: 16.4%︎ Iron: 20.0%︎ Nickel: 15.1%︎ Phosphorus: 10.5%︎ Sulphur: 19.5%︎ HD 391 3 e - Rocky body Landable
Body distance1,690 LsEarth masses0.0004Radius502 kmGravity0.06 gSurface temperature641 K (368°C/695°F)Surface pressure0.00 atmVolcanismMinor Silicate vapour geysersAtmosphereTerraforming︎ Tellurium: 1.5%︎ Molybdenum: 1.3%︎ Niobium: 1.3%︎ Arsenic: 2.5%︎ Germanium: 5.6%︎ Manganese: 8.1%︎ Carbon: 16.0%︎ Iron: 19.6%︎ Nickel: 14.8%︎ Phosphorus: 10.3%︎ Sulphur: 19.1%︎ HD 391 3 c - Rocky body Landable
Body distance1,691 LsEarth masses0.0004Radius508 kmGravity0.06 gSurface temperature642 K (368°C/695°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 0.7%︎ Cadmium: 1.5%︎ Molybdenum: 1.2%︎ Chromium: 8.6%︎ Manganese: 7.9%︎ Zirconium: 2.2%︎ Carbon: 15.7%︎ Iron: 19.1%︎ Nickel: 14.5%︎ Phosphorus: 10.0%︎ Sulphur: 18.6%︎ HD 391 3 - Class III gas giant
Body distance1,693 LsEarth masses19.2296Radius32,518 kmGravity0.74 gSurface temperature633 K (359°C/679°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HD 391 3 a - Rocky body Landable
Body distance1,693 LsEarth masses0.0002Radius415 kmGravity0.05 gSurface temperature642 K (368°C/695°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Molybdenum: 1.2%︎ Niobium: 1.3%︎ Chromium: 8.6%︎ Germanium: 5.4%︎ Vanadium: 4.7%︎ Carbon: 15.6%︎ Iron: 19.0%︎ Nickel: 14.4%︎ Phosphorus: 10.0%︎ Sulphur: 18.6%︎ HD 391 3 b - Rocky body Landable
Body distance1,694 LsEarth masses0.0008Radius647 kmGravity0.08 gSurface temperature642 K (368°C/695°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 0.7%︎ Mercury: 0.9%︎ Tungsten: 1.1%︎ Manganese: 8.3%︎ Vanadium: 4.9%︎ Zirconium: 2.3%︎ Carbon: 16.4%︎ Iron: 20.2%︎ Nickel: 15.2%︎ Phosphorus: 10.5%︎ Sulphur: 19.4%︎ HD 391 4 - High metal content world
Body distance2,423 LsRing/belt typeMetal rich (Pristine)Earth masses2.8018Radius8,199 kmGravity1.69 gSurface temperature1,839 K (1,566°C/2,851°F)Surface pressure396.27 atmVolcanismMinor Metallic magmaAtmosphereHot Thick Carbon dioxideTerraforming