Star system
TRAPPIST-1
Economy
Government
Allegiance
Independent
Star type
Class M star Scoopable
Coordinates
-21.66 / -35 / 10.03
Permit required
No
Powerplay
Unoccupied
Powers
︎ TRAPPIST-1 - Class M star
Body distance-Solar masses0.0781Solar radius0.1138︎ TRAPPIST-1 1 - High metal content world Landable
Body distance5 LsEarth masses0.8500Radius6,919 kmGravity0.72 gSurface temperature240 K (-33°C/-27°F)Surface pressure0.00 atmVolcanismMinor Silicate vapour geysersAtmosphereTerraforming︎ Antimony: 1.0%︎ Niobium: 1.5%︎ Tungsten: 1.2%︎ Chromium: 9.8%︎ Germanium: 4.7%︎ Vanadium: 5.4%︎ Carbon: 13.4%︎ Iron: 21.8%︎ Nickel: 16.5%︎ Phosphorus: 8.6%︎ Sulphur: 16.0%︎ TRAPPIST-1 1 a - High metal content world Landable
Body distance6 LsEarth masses0.0070Radius1,266 kmGravity0.18 gSurface temperature240 K (-33°C/-27°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Antimony: 1.0%︎ Cadmium: 1.7%︎ Niobium: 1.5%︎ Chromium: 9.8%︎ Germanium: 4.7%︎ Vanadium: 5.3%︎ Carbon: 13.4%︎ Iron: 21.7%︎ Nickel: 16.4%︎ Phosphorus: 8.6%︎ Sulphur: 15.9%︎ TRAPPIST-1 2 - Rocky body
Body distance7 LsEarth masses1.3800Radius6,728 kmGravity1.24 gSurface temperature217 K (-56°C/-68°F)Surface pressure7.18 atmVolcanismMajor Rocky magmaAtmosphereThick Sulphur dioxideTerraforming︎ TRAPPIST-1 3 - High metal content world
Body distance8 LsEarth masses0.4100Radius4,918 kmGravity0.69 gSurface temperature352 K (79°C/174°F)Surface pressure4.33 atmVolcanismAtmosphereOxygenTerraforming︎ TRAPPIST-1 3 a - Rocky body Landable
Body distance8 LsEarth masses0.0030Radius984 kmGravity0.13 gSurface temperature200 K (-73°C/-99°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Ruthenium: 1.3%︎ Molybdenum: 1.4%︎ Tungsten: 1.2%︎ Arsenic: 2.3%︎ Manganese: 8.9%︎ Vanadium: 5.3%︎ Carbon: 14.8%︎ Iron: 21.5%︎ Nickel: 16.2%︎ Phosphorus: 9.5%︎ Sulphur: 17.6%︎ TRAPPIST-1 4 - Earth-like world
Body distance12 LsEarth masses0.6200Radius5,849 kmGravity0.74 gSurface temperature288 K (15°C/59°F)Surface pressure0.88 atmVolcanismRocky magmaAtmosphereSuitable for water-based lifeTerraforming︎ TRAPPIST-1 4 b - Rocky body Landable
Body distance14 LsEarth masses0.0057Radius1,215 kmGravity0.16 gSurface temperature154 K (-119°C/-182°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Cadmium: 1.6%︎ Mercury: 0.9%︎ Chromium: 9.0%︎ Manganese: 8.3%︎ Vanadium: 4.9%︎ Carbon: 13.8%︎ Iron: 20.0%︎ Nickel: 15.1%︎ Phosphorus: 8.8%︎ Sulphur: 16.4%︎ TRAPPIST-1 4 a - Rocky body Landable
Body distance15 LsEarth masses0.0170Radius1,739 kmGravity0.23 gSurface temperature154 K (-119°C/-182°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.6%︎ Selenium: 2.7%︎ Cadmium: 1.7%︎ Tin: 1.4%︎ Manganese: 8.8%︎ Zinc: 5.8%︎ Carbon: 14.7%︎ Iron: 21.3%︎ Nickel: 16.1%︎ Phosphorus: 9.4%︎ Sulphur: 17.5%︎ TRAPPIST-1 5 - High metal content world Landable
Body distance20 LsEarth masses0.6800Radius6,658 kmGravity0.62 gSurface temperature183 K (-90°C/-130°F)Surface pressure0.09 atmVolcanismAtmosphereThin OxygenTerraforming︎ Tellurium: 1.2%︎ Cadmium: 1.6%︎ Niobium: 1.4%︎ Chromium: 9.4%︎ Germanium: 4.5%︎ Manganese: 8.6%︎ Carbon: 12.9%︎ Iron: 20.9%︎ Nickel: 15.8%︎ Phosphorus: 8.2%︎ Sulphur: 15.3%︎ TRAPPIST-1 6 - High metal content world
Body distance23 LsEarth masses1.3400Radius7,180 kmGravity1.06 gSurface temperature283 K (10°C/49°F)Surface pressure10.57 atmVolcanismAtmosphereThick MethaneTerraforming︎ TRAPPIST-1 7 - Icy body Landable
Body distance33 LsEarth masses0.6300Radius4,810 kmGravity1.11 gSurface temperature89 K (-184°C/-299°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.0%︎ Selenium: 3.5%︎ Mercury: 0.7%︎ Niobium: 1.1%︎ Chromium: 7.5%︎ Vanadium: 4.1%︎ Carbon: 18.6%︎ Iron: 16.7%︎ Nickel: 12.6%︎ Phosphorus: 11.9%︎ Sulphur: 22.1%