Star system
21 Eridani
Economy
Government
Allegiance
Independent
Star type
Class K star (orange giant) Scoopable
Coordinates
17.13 / -76.59 / -77
Permit required
No
︎ 21 Eridani A - Class K star (orange giant)
Body distance-Solar masses0.6250Solar radius0.8059︎ 21 Eridani B - Class M star
Body distance8 LsSolar masses0.2109Solar radius0.3992︎ 21 Eridani C - Class M star
Body distance116 LsSolar masses0.3203Solar radius0.5184︎ 21 Eridani D - Class L star (brown dwarf)
Body distance122 LsSolar masses0.1641Solar radius0.3131︎ 21 Eridani ABCD 2 - Class III gas giant
Body distance1,011 LsRing/belt typeRocky (Pristine)Earth masses784.9340Radius77,059 kmGravity5.37 gSurface temperature366 K (92°C/198°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ 21 Eridani ABCD 2 b - Rocky body Landable
Body distance1,010 LsEarth masses0.0020Radius887 kmGravity0.10 gSurface temperature274 K (0°C/33°F)Surface pressure0.00 atmVolcanismMinor Rocky magmaAtmosphereTerraforming︎ Technetium: 0.7%︎ Cadmium: 1.6%︎ Tin: 1.2%︎ Germanium: 5.8%︎ Zinc: 5.5%︎ Zirconium: 2.4%︎ Carbon: 16.6%︎ Iron: 20.4%︎ Nickel: 15.4%︎ Phosphorus: 10.6%︎ Sulphur: 19.8%︎ 21 Eridani ABCD 2 a - Rocky body Landable
Body distance1,053 LsEarth masses0.0025Radius948 kmGravity0.11 gSurface temperature279 K (5°C/42°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Tellurium: 1.4%︎ Cadmium: 1.4%︎ Molybdenum: 1.2%︎ Chromium: 8.3%︎ Germanium: 5.3%︎ Manganese: 7.6%︎ Carbon: 15.0%︎ Iron: 18.4%︎ Nickel: 13.9%︎ Phosphorus: 9.6%︎ Sulphur: 17.9%︎ 21 Eridani ABCD 1 - Class III gas giant
Body distance1,047 LsRing/belt typeMetal rich (Pristine)Earth masses1,595.9100Radius75,025 kmGravity11.52 gSurface temperature536 K (263°C/505°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ 21 Eridani ABCD 1 a - Rocky body Landable
Body distance1,067 LsEarth masses0.0037Radius1,084 kmGravity0.13 gSurface temperature315 K (41°C/107°F)Surface pressure0.00 atmVolcanismMetallic magmaAtmosphereTerraforming︎ Yttrium: 1.1%︎ Mercury: 0.8%︎ Tin: 1.2%︎ Chromium: 8.7%︎ Vanadium: 4.7%︎ Zinc: 5.2%︎ Carbon: 15.7%︎ Iron: 19.2%︎ Nickel: 14.6%︎ Phosphorus: 10.1%︎ Sulphur: 18.7%︎ 21 Eridani ABCD 4 - Class III gas giant
Body distance1,480 LsRing/belt typeMetallic (Pristine)
Metal rich (Pristine)Earth masses288.7500Radius72,381 kmGravity2.24 gSurface temperature253 K (-20°C/-4°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ 21 Eridani ABCD 4 a - Rocky body Landable
Body distance1,479 LsEarth masses0.0017Radius838 kmGravity0.10 gSurface temperature234 K (-40°C/-39°F)Surface pressure0.00 atmVolcanismMetallic magmaAtmosphereTerraforming︎ Tellurium: 1.4%︎ Niobium: 1.3%︎ Tungsten: 1.1%︎ Germanium: 5.5%︎ Manganese: 7.9%︎ Vanadium: 4.7%︎ Carbon: 15.7%︎ Iron: 19.2%︎ Nickel: 14.5%︎ Phosphorus: 10.0%︎ Sulphur: 18.6%︎ 21 Eridani ABCD 3 - Class IV gas giant
Body distance1,486 LsRing/belt typeRocky (Pristine)Earth masses2,822.7300Radius68,728 kmGravity24.29 gSurface temperature813 K (540°C/1,003°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ 21 Eridani ABCD 3 c - Rocky body Landable
Body distance1,468 LsEarth masses0.0028Radius983 kmGravity0.12 gSurface temperature300 K (27°C/81°F)Surface pressure0.00 atmVolcanismMinor Rocky magmaAtmosphereTerraforming︎ Technetium: 0.7%︎ Mercury: 0.9%︎ Molybdenum: 1.3%︎ Arsenic: 2.6%︎ Vanadium: 5.1%︎ Zinc: 5.6%︎ Carbon: 16.8%︎ Iron: 20.6%︎ Nickel: 15.6%︎ Phosphorus: 10.8%︎ Sulphur: 20.0%︎ 21 Eridani ABCD 3 b - Rocky body Landable
Body distance1,481 LsEarth masses0.0012Radius742 kmGravity0.09 gSurface temperature318 K (45°C/113°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Polonium: 0.5%︎ Cadmium: 1.5%︎ Mercury: 0.8%︎ Germanium: 5.6%︎ Manganese: 8.0%︎ Vanadium: 4.8%︎ Carbon: 15.8%︎ Iron: 19.4%︎ Nickel: 14.7%︎ Phosphorus: 10.1%︎ Sulphur: 18.8%︎ 21 Eridani ABCD 3 a - Rocky body Landable
Body distance1,485 LsEarth masses0.0010Radius694 kmGravity0.08 gSurface temperature342 K (69°C/156°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Mercury: 0.8%︎ Niobium: 1.3%︎ Chromium: 8.4%︎ Manganese: 7.7%︎ Vanadium: 4.6%︎ Carbon: 15.3%︎ Iron: 18.7%︎ Nickel: 14.1%︎ Phosphorus: 9.8%︎ Sulphur: 18.1%︎ 21 Eridani ABCD 3 d - Rocky body Landable
Body distance1,486 LsEarth masses0.0016Radius828 kmGravity0.10 gSurface temperature289 K (16°C/61°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.1%︎ Cadmium: 1.4%︎ Niobium: 1.3%︎ Chromium: 8.3%︎ Germanium: 5.3%︎ Manganese: 7.6%︎ Carbon: 15.0%︎ Iron: 18.5%︎ Nickel: 14.0%︎ Phosphorus: 9.6%︎ Sulphur: 17.9%︎ 21 Eridani ABCD 3 e - Rocky body Landable
Body distance1,488 LsEarth masses0.0018Radius855 kmGravity0.10 gSurface temperature275 K (2°C/35°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 0.7%︎ Molybdenum: 1.2%︎ Tin: 1.1%︎ Chromium: 8.4%︎ Germanium: 5.3%︎ Manganese: 7.7%︎ Carbon: 15.2%︎ Iron: 18.6%︎ Nickel: 14.1%︎ Phosphorus: 9.7%︎ Sulphur: 18.0%︎ 21 Eridani ABCD 5 - Class Y star (brown dwarf)
Body distance2,417 LsSolar masses0.0156Solar radius0.0725︎ 21 Eridani ABCD 5 e - Rocky body Landable
Body distance2,379 LsEarth masses0.0769Radius2,916 kmGravity0.37 gSurface temperature179 K (-94°C/-137°F)Surface pressure0.00 atmVolcanismAtmosphereThin Sulphur dioxideTerraforming︎ Yttrium: 1.1%︎ Cadmium: 1.5%︎ Tungsten: 1.1%︎ Germanium: 5.5%︎ Manganese: 7.9%︎ Vanadium: 4.7%︎ Carbon: 15.7%︎ Iron: 19.2%︎ Nickel: 14.5%︎ Phosphorus: 10.0%︎ Sulphur: 18.7%︎ 21 Eridani ABCD 5 b - Rocky body
Body distance2,380 LsEarth masses0.0422Radius2,400 kmGravity0.30 gSurface temperature200 K (-73°C/-99°F)Surface pressure0.00 atmVolcanismMajor Rocky magmaAtmosphereThin Sulphur dioxideTerraforming︎ 21 Eridani ABCD 5 c - Rocky body Landable
Body distance2,381 LsEarth masses0.0235Radius1,985 kmGravity0.24 gSurface temperature192 K (-81°C/-114°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 3.0%︎ Yttrium: 1.2%︎ Niobium: 1.3%︎ Tungsten: 1.1%︎ Manganese: 8.1%︎ Zinc: 5.4%︎ Carbon: 16.0%︎ Iron: 19.7%︎ Nickel: 14.9%︎ Phosphorus: 10.2%︎ Sulphur: 19.0%︎ 21 Eridani ABCD 5 c a - Rocky body Landable
Body distance2,381 LsEarth masses0.0011Radius726 kmGravity0.08 gSurface temperature192 K (-81°C/-114°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Tellurium: 1.5%︎ Tin: 0.9%︎ Tungsten: 1.0%︎ Chromium: 8.0%︎ Germanium: 5.9%︎ Vanadium: 4.4%︎ Carbon: 16.7%︎ Iron: 17.7%︎ Nickel: 13.4%︎ Phosphorus: 10.7%︎ Sulphur: 19.9%︎ 21 Eridani ABCD 5 d - Rocky body Landable
Body distance2,393 LsEarth masses0.0138Radius1,670 kmGravity0.20 gSurface temperature184 K (-89°C/-129°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Yttrium: 1.2%︎ Cadmium: 1.6%︎ Tin: 1.2%︎ Arsenic: 2.7%︎ Germanium: 6.0%︎ Zirconium: 2.4%︎ Carbon: 17.0%︎ Iron: 20.9%︎ Nickel: 15.8%︎ Phosphorus: 10.9%︎ Sulphur: 20.2%︎ 21 Eridani ABCD 5 a - Rocky body Landable
Body distance2,420 LsEarth masses0.0135Radius1,658 kmGravity0.20 gSurface temperature205 K (-68°C/-90°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Polonium: 0.5%︎ Niobium: 1.3%︎ Tin: 1.2%︎ Manganese: 8.0%︎ Vanadium: 4.8%︎ Zinc: 5.3%︎ Carbon: 15.8%︎ Iron: 19.4%︎ Nickel: 14.7%︎ Phosphorus: 10.1%︎ Sulphur: 18.8%︎ 21 Eridani ABCD 6 - Water world
Body distance2,491 LsEarth masses27.0212Radius18,905 kmGravity3.07 gSurface temperature376 K (103°C/218°F)Surface pressure10,827.34 atmVolcanismWater geysersAtmosphereThick Argon-richTerraforming