Star system
Groombridge 1618
Economy
Agriculture / Industrial
Government
Democracy
Allegiance
Federation
Star type
Class K star Scoopable
Coordinates
-2.34 / 12.63 / -9.34
Permit required
No
Powerplay
Fortified
Powers
︎ Groombridge 1618 A - Class K star
Body distance-Solar masses0.5156Solar radius0.6482︎ Groombridge 1618 A 1 - High metal content world Landable
Body distance26 LsEarth masses0.5226Radius4,999 kmGravity0.85 gSurface temperature506 K (233°C/452°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 1.2%︎ Cadmium: 1.8%︎ Niobium: 1.5%︎ Chromium: 10.2%︎ Germanium: 4.8%︎ Zirconium: 2.6%︎ Carbon: 13.5%︎ Iron: 22.6%︎ Nickel: 17.1%︎ Phosphorus: 8.6%︎ Sulphur: 16.1%︎ Groombridge 1618 A 2 - Earth-like world
Body distance169 LsEarth masses1.3542Radius6,654 kmGravity1.24 gSurface temperature262 K (-11°C/12°F)Surface pressure2.31 atmVolcanismAtmosphereSuitable for water-based lifeTerraformingTerraformed︎ Groombridge 1618 A 3 - Earth-like world
Body distance170 LsEarth masses0.7744Radius5,633 kmGravity0.99 gSurface temperature261 K (-12°C/10°F)Surface pressure3.01 atmVolcanismAtmosphereSuitable for water-based lifeTerraforming︎ Groombridge 1618 A 4 - High metal content world
Body distance932 LsEarth masses1.5877Radius6,970 kmGravity1.33 gSurface temperature216 K (-57°C/-70°F)Surface pressure15.98 atmVolcanismMajor Rocky magmaAtmosphereThick MethaneTerraforming︎ Groombridge 1618 A 5 - Icy body
Body distance1,413 LsEarth masses7.4660Radius13,728 kmGravity1.61 gSurface temperature66 K (-207°C/-340°F)Surface pressure1.37 atmVolcanismMajor Water geysersAtmosphereHeliumTerraforming︎ Groombridge 1618 A 6 - Icy body
Body distance2,413 LsRing/belt typeIcy (Low)Earth masses1.9960Radius9,761 kmGravity0.85 gSurface temperature51 K (-223°C/-369°F)Surface pressure0.34 atmVolcanismMajor Water geysersAtmosphereNeon-richTerraforming︎ Groombridge 1618 B - Class L star (brown dwarf)
Body distance24,290 LsSolar masses0.1172Solar radius0.2682︎ Groombridge 1618 B 3 - Icy body Landable
Body distance24,131 LsEarth masses0.0862Radius3,618 kmGravity0.27 gSurface temperature60 K (-213°C/-351°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 0.7%︎ Niobium: 1.1%︎ Tungsten: 0.9%︎ Chromium: 7.0%︎ Germanium: 3.3%︎ Manganese: 6.4%︎ Carbon: 18.9%︎ Iron: 15.5%︎ Nickel: 11.8%︎ Phosphorus: 12.1%︎ Sulphur: 22.5%︎ Groombridge 1618 B 1 - Icy body Landable
Body distance24,211 LsEarth masses0.0574Radius3,174 kmGravity0.23 gSurface temperature74 K (-199°C/-326°F)Surface pressure0.02 atmVolcanismAtmosphereThin ArgonTerraforming︎ Antimony: 0.7%︎ Selenium: 3.6%︎ Molybdenum: 1.0%︎ Niobium: 1.1%︎ Chromium: 7.2%︎ Germanium: 3.4%︎ Carbon: 19.4%︎ Iron: 16.0%︎ Nickel: 12.1%︎ Phosphorus: 12.4%︎ Sulphur: 23.1%︎ Groombridge 1618 B 2 - Icy body
Body distance24,415 LsEarth masses0.0768Radius3,487 kmGravity0.26 gSurface temperature141 K (-132°C/-205°F)Surface pressure5.24 atmVolcanismAtmosphereThick MethaneTerraforming︎ Groombridge 1618 B 4 - Icy body Landable
Body distance24,489 LsEarth masses0.0592Radius3,207 kmGravity0.23 gSurface temperature52 K (-221°C/-366°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 0.7%︎ Niobium: 1.1%︎ Tin: 1.1%︎ Germanium: 3.5%︎ Zinc: 4.6%︎ Zirconium: 1.9%︎ Carbon: 20.4%︎ Iron: 16.8%︎ Nickel: 12.7%︎ Phosphorus: 13.0%︎ Sulphur: 24.2%︎ Groombridge 1618 B 7 - Icy body Landable
Body distance24,509 LsEarth masses0.1683Radius4,480 kmGravity0.34 gSurface temperature40 K (-233°C/-387°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Yttrium: 0.9%︎ Cadmium: 1.2%︎ Tungsten: 0.9%︎ Chromium: 7.1%︎ Germanium: 3.3%︎ Vanadium: 3.9%︎ Carbon: 19.3%︎ Iron: 15.9%︎ Nickel: 12.0%︎ Phosphorus: 12.4%︎ Sulphur: 23.0%︎ Groombridge 1618 B 5 - Icy body Landable
Body distance24,530 LsEarth masses0.0810Radius3,548 kmGravity0.26 gSurface temperature49 K (-225°C/-372°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 0.7%︎ Niobium: 1.1%︎ Tin: 1.0%︎ Manganese: 6.7%︎ Zinc: 4.4%︎ Zirconium: 1.9%︎ Carbon: 19.7%︎ Iron: 16.2%︎ Nickel: 12.3%︎ Phosphorus: 12.6%︎ Sulphur: 23.4%︎ Groombridge 1618 B 6 - Icy body Landable
Body distance24,694 LsEarth masses0.3371Radius5,574 kmGravity0.44 gSurface temperature44 K (-230°C/-381°F)Surface pressure0.00 atmVolcanismAtmosphereThin NeonTerraforming︎ Antimony: 0.7%︎ Selenium: 3.6%︎ Cadmium: 1.2%︎ Tin: 1.0%︎ Manganese: 6.6%︎ Vanadium: 3.9%︎ Carbon: 19.4%︎ Iron: 16.0%︎ Nickel: 12.1%︎ Phosphorus: 12.4%︎ Sulphur: 23.1%︎ Groombridge 1618 B 9 - Icy body Landable
Body distance25,055 LsEarth masses0.1350Radius4,177 kmGravity0.31 gSurface temperature36 K (-238°C/-396°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 0.9%︎ Cadmium: 1.3%︎ Tin: 1.1%︎ Germanium: 3.4%︎ Manganese: 6.7%︎ Zirconium: 1.9%︎ Carbon: 19.8%︎ Iron: 16.3%︎ Nickel: 12.3%︎ Phosphorus: 12.7%︎ Sulphur: 23.6%︎ Groombridge 1618 B 8 - Icy body Landable
Body distance25,074 LsEarth masses0.1380Radius4,206 kmGravity0.32 gSurface temperature36 K (-238°C/-396°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 3.5%︎ Yttrium: 0.9%︎ Cadmium: 1.2%︎ Niobium: 1.1%︎ Chromium: 6.9%︎ Manganese: 6.4%︎ Carbon: 18.7%︎ Iron: 15.4%︎ Nickel: 11.7%︎ Phosphorus: 12.0%︎ Sulphur: 22.3%