Star system
HR 3991
Economy
Extraction / Refinery
Government
Corporate
Allegiance
Federation
Star type
Class F star Scoopable
Coordinates
71.81 / 51 / -20.59
Permit required
No
Powerplay
Exploited
Powers
Felicia Winters (Controlling)
︎ HR 3991 - Class F star
Body distance-Solar masses1.5703Solar radius1.3490︎ HR 3991 1 - High metal content world
Body distance384 LsEarth masses0.9989Radius6,080 kmGravity1.10 gSurface temperature439 K (165°C/330°F)Surface pressure1.64 atmVolcanismMajor Rocky magmaAtmosphereSulphur dioxideTerraforming︎ HR 3991 2 - High metal content world
Body distance671 LsEarth masses0.2057Radius3,742 kmGravity0.60 gSurface temperature318 K (45°C/114°F)Surface pressure0.22 atmVolcanismAtmosphereSulphur dioxideTerraforming︎ HR 3991 3 - High metal content world
Body distance1,967 LsEarth masses1.4239Radius6,752 kmGravity1.27 gSurface temperature204 K (-69°C/-92°F)Surface pressure1.91 atmVolcanismMinor Silicate vapour geysersAtmosphereNitrogenTerraforming︎ HR 3991 4 - Rocky ice world
Body distance2,753 LsEarth masses1.1701Radius7,036 kmGravity0.96 gSurface temperature392 K (118°C/245°F)Surface pressure1,493.01 atmVolcanismMajor Rocky magmaAtmosphereThick Ammonia-richTerraforming︎ HR 3991 4 a - Icy body
Body distance2,748 LsEarth masses0.0604Radius3,146 kmGravity0.25 gSurface temperature330 K (57°C/134°F)Surface pressure19.79 atmVolcanismAtmosphereThick Carbon dioxideTerraforming︎ HR 3991 5 - Rocky ice world
Body distance3,715 LsEarth masses0.8765Radius6,496 kmGravity0.84 gSurface temperature346 K (73°C/164°F)Surface pressure1,143.74 atmVolcanismRocky magmaAtmosphereThick Methane-richTerraforming︎ HR 3991 6 - Rocky ice world
Body distance4,714 LsEarth masses0.6101Radius5,820 kmGravity0.73 gSurface temperature108 K (-165°C/-266°F)Surface pressure1.85 atmVolcanismAtmosphereArgon-richTerraforming