Star system
4 Eridani
Economy
Military / Agriculture
Government
Corporate
Allegiance
Independent
Star type
Class A star Scoopable
Coordinates
41.5 / -135.94 / -63.19
Permit required
No
Powerplay
Unoccupied
Powers
︎ 4 Eridani A - Class A star
Body distance-Solar masses1.8672Solar radius2.6597︎ 4 Eridani B - Class A star
Body distance14 LsSolar masses1.8125Solar radius1.3730︎ 4 Eridani C - Class G star
Body distance53 LsSolar masses1.2148Solar radius1.0880︎ 4 Eridani ABC 1 - High metal content world Landable
Body distance170 LsEarth masses5.5238Radius9,859 kmGravity2.31 gSurface temperature911 K (638°C/1,180°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Antimony: 1.0%︎ Cadmium: 1.8%︎ Molybdenum: 1.5%︎ Vanadium: 5.8%︎ Zinc: 6.4%︎ Zirconium: 2.7%︎ Carbon: 13.9%︎ Iron: 23.5%︎ Nickel: 17.8%︎ Phosphorus: 8.9%︎ Sulphur: 16.5%︎ 4 Eridani ABC 2 - High metal content world Landable
Body distance327 LsEarth masses4.7453Radius9,468 kmGravity2.15 gSurface temperature672 K (399°C/751°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Selenium: 2.5%︎ Technetium: 0.8%︎ Mercury: 1.0%︎ Tin: 1.5%︎ Chromium: 10.2%︎ Zinc: 6.2%︎ Carbon: 13.4%︎ Iron: 22.7%︎ Nickel: 17.2%︎ Phosphorus: 8.6%︎ Sulphur: 16.0%︎ 4 Eridani ABC 3 - High metal content world
Body distance511 LsEarth masses5.4363Radius9,817 kmGravity2.29 gSurface temperature1,909 K (1,636°C/2,977°F)Surface pressure742.27 atmVolcanismMajor Silicate vapour geysersAtmosphereHot Thick Carbon dioxideTerraforming︎ 4 Eridani ABC 4 - High metal content world
Body distance955 LsEarth masses5.5308Radius9,862 kmGravity2.31 gSurface temperature1,433 K (1,160°C/2,120°F)Surface pressure753.66 atmVolcanismMajor Silicate vapour geysersAtmosphereHot Thick Carbon dioxideTerraforming︎ 4 Eridani ABC 5 - Class III gas giant
Body distance1,662 LsRing/belt typeMetallic (Low)
Rocky (Low)Earth masses913.7160Radius76,667 kmGravity6.32 gSurface temperature438 K (165°C/329°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ 4 Eridani ABC 5 c - Rocky body Landable
Body distance1,634 LsEarth masses0.0103Radius1,518 kmGravity0.18 gSurface temperature315 K (42°C/107°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Cadmium: 1.5%︎ Molybdenum: 1.2%︎ Germanium: 5.5%︎ Manganese: 7.9%︎ Zinc: 5.2%︎ Carbon: 15.5%︎ Iron: 19.1%︎ Nickel: 14.5%︎ Phosphorus: 9.9%︎ Sulphur: 18.5%︎ 4 Eridani ABC 5 c a - Rocky body Landable
Body distance1,639 LsEarth masses0.0003Radius451 kmGravity0.05 gSurface temperature315 K (42°C/107°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Yttrium: 1.1%︎ Molybdenum: 1.2%︎ Niobium: 1.3%︎ Arsenic: 2.7%︎ Manganese: 7.6%︎ Vanadium: 4.5%︎ Carbon: 17.4%︎ Iron: 18.4%︎ Nickel: 14.0%︎ Phosphorus: 11.1%︎ Sulphur: 20.7%︎ 4 Eridani ABC 5 e - Rocky body Landable
Body distance1,644 LsEarth masses0.0034Radius1,054 kmGravity0.12 gSurface temperature309 K (36°C/97°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 1.5%︎ Niobium: 1.3%︎ Tin: 1.2%︎ Germanium: 5.7%︎ Vanadium: 4.8%︎ Zinc: 5.4%︎ Carbon: 16.1%︎ Iron: 19.7%︎ Nickel: 14.9%︎ Phosphorus: 10.3%︎ Sulphur: 19.1%︎ 4 Eridani ABC 5 a - Rocky body
Body distance1,663 LsEarth masses0.0043Radius1,141 kmGravity0.13 gSurface temperature327 K (53°C/128°F)Surface pressure0.00 atmVolcanismMajor Rocky magmaAtmosphereSulphur dioxideTerraforming︎ 4 Eridani ABC 5 b - Rocky body Landable
Body distance1,664 LsEarth masses0.0020Radius885 kmGravity0.10 gSurface temperature321 K (48°C/119°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 3.0%︎ Yttrium: 1.2%︎ Mercury: 0.9%︎ Niobium: 1.3%︎ Chromium: 8.8%︎ Zinc: 5.3%︎ Carbon: 16.0%︎ Iron: 19.6%︎ Nickel: 14.8%︎ Phosphorus: 10.2%︎ Sulphur: 19.0%︎ 4 Eridani ABC 5 d - Rocky body Landable
Body distance1,667 LsEarth masses0.0038Radius1,091 kmGravity0.13 gSurface temperature312 K (39°C/102°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.5%︎ Mercury: 0.8%︎ Molybdenum: 1.3%︎ Germanium: 5.6%︎ Manganese: 8.0%︎ Vanadium: 4.8%︎ Carbon: 15.9%︎ Iron: 19.4%︎ Nickel: 14.7%︎ Phosphorus: 10.1%︎ Sulphur: 18.9%︎ 4 Eridani ABC 6 - Class IV gas giant
Body distance2,210 LsEarth masses2,687.3100Radius69,452 kmGravity22.64 gSurface temperature831 K (558°C/1,036°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ 4 Eridani ABC 6 d - Rocky body Landable
Body distance2,202 LsEarth masses0.0088Radius1,441 kmGravity0.17 gSurface temperature292 K (19°C/65°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Yttrium: 1.1%︎ Mercury: 0.8%︎ Niobium: 1.3%︎ Chromium: 8.4%︎ Manganese: 7.7%︎ Vanadium: 4.6%︎ Carbon: 15.2%︎ Iron: 18.7%︎ Nickel: 14.2%︎ Phosphorus: 9.7%︎ Sulphur: 18.1%︎ 4 Eridani ABC 6 c - Rocky body Landable
Body distance2,204 LsEarth masses0.0026Radius964 kmGravity0.11 gSurface temperature312 K (39°C/102°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 1.4%︎ Niobium: 1.3%︎ Tungsten: 1.0%︎ Chromium: 8.3%︎ Manganese: 7.7%︎ Zinc: 5.0%︎ Carbon: 15.1%︎ Iron: 18.5%︎ Nickel: 14.0%︎ Phosphorus: 9.7%︎ Sulphur: 18.0%︎ 4 Eridani ABC 6 a - Rocky body Landable
Body distance2,208 LsEarth masses0.0054Radius1,226 kmGravity0.15 gSurface temperature344 K (71°C/160°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Cadmium: 1.5%︎ Tin: 1.1%︎ Chromium: 8.5%︎ Germanium: 5.5%︎ Zinc: 5.2%︎ Carbon: 15.5%︎ Iron: 19.0%︎ Nickel: 14.3%︎ Phosphorus: 9.9%︎ Sulphur: 18.4%︎ 4 Eridani ABC 6 b - Rocky body Landable
Body distance2,237 LsEarth masses0.0031Radius1,019 kmGravity0.12 gSurface temperature324 K (51°C/124°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Yttrium: 1.2%︎ Cadmium: 1.5%︎ Molybdenum: 1.3%︎ Chromium: 8.8%︎ Zinc: 5.3%︎ Zirconium: 2.3%︎ Carbon: 16.0%︎ Iron: 19.6%︎ Nickel: 14.8%︎ Phosphorus: 10.2%︎ Sulphur: 19.0%︎ 4 Eridani ABC 7 - Class Y star (brown dwarf)
Body distance2,739 LsSolar masses0.0117Solar radius0.0633︎ 4 Eridani ABC 7 c - Rocky body Landable
Body distance2,741 LsEarth masses0.0023Radius930 kmGravity0.11 gSurface temperature227 K (-46°C/-52°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.1%︎ Cadmium: 1.4%︎ Tungsten: 1.0%︎ Chromium: 8.3%︎ Germanium: 5.3%︎ Manganese: 7.6%︎ Carbon: 15.1%︎ Iron: 18.5%︎ Nickel: 14.0%︎ Phosphorus: 9.7%︎ Sulphur: 17.9%︎ 4 Eridani ABC 7 f - Rocky body Landable
Body distance2,748 LsEarth masses0.0112Radius1,559 kmGravity0.19 gSurface temperature227 K (-46°C/-52°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 0.7%︎ Cadmium: 1.4%︎ Niobium: 1.3%︎ Chromium: 8.4%︎ Manganese: 7.7%︎ Zinc: 5.1%︎ Carbon: 15.2%︎ Iron: 18.6%︎ Nickel: 14.1%︎ Phosphorus: 9.7%︎ Sulphur: 18.0%︎ 4 Eridani ABC 7 a - Rocky body Landable
Body distance2,752 LsEarth masses0.0056Radius1,245 kmGravity0.15 gSurface temperature227 K (-46°C/-52°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 3.2%︎ Yttrium: 1.2%︎ Niobium: 1.4%︎ Tungsten: 1.1%︎ Zinc: 5.7%︎ Zirconium: 2.4%︎ Carbon: 17.0%︎ Iron: 20.9%︎ Nickel: 15.8%︎ Phosphorus: 10.9%︎ Sulphur: 20.3%︎ 4 Eridani ABC 7 e - Rocky body Landable
Body distance2,756 LsEarth masses0.0026Radius961 kmGravity0.11 gSurface temperature227 K (-46°C/-52°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Antimony: 1.2%︎ Niobium: 1.4%︎ Tin: 1.2%︎ Arsenic: 2.6%︎ Vanadium: 5.0%︎ Zinc: 5.5%︎ Carbon: 16.6%︎ Iron: 20.4%︎ Nickel: 15.4%︎ Phosphorus: 10.7%︎ Sulphur: 19.8%︎ 4 Eridani ABC 7 g - Rocky body Landable
Body distance2,760 LsEarth masses0.0110Radius1,550 kmGravity0.19 gSurface temperature227 K (-46°C/-52°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Niobium: 1.4%︎ Tungsten: 1.1%︎ Germanium: 5.7%︎ Vanadium: 4.9%︎ Zinc: 5.4%︎ Carbon: 16.1%︎ Iron: 19.8%︎ Nickel: 15.0%︎ Phosphorus: 10.3%︎ Sulphur: 19.2%︎ 4 Eridani ABC 7 d - Rocky body Landable
Body distance2,772 LsEarth masses0.0034Radius1,050 kmGravity0.12 gSurface temperature227 K (-46°C/-52°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Ruthenium: 1.1%︎ Cadmium: 1.4%︎ Molybdenum: 1.2%︎ Chromium: 8.3%︎ Germanium: 5.3%︎ Manganese: 7.6%︎ Carbon: 15.0%︎ Iron: 18.5%︎ Nickel: 14.0%︎ Phosphorus: 9.6%︎ Sulphur: 17.9%︎ 4 Eridani ABC 7 b - Rocky body Landable
Body distance2,773 LsEarth masses0.0033Radius1,048 kmGravity0.12 gSurface temperature227 K (-46°C/-52°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 2.9%︎ Yttrium: 1.2%︎ Molybdenum: 1.3%︎ Niobium: 1.3%︎ Chromium: 8.7%︎ Germanium: 5.6%︎ Carbon: 15.8%︎ Iron: 19.4%︎ Nickel: 14.7%︎ Phosphorus: 10.1%︎ Sulphur: 18.8%︎ 4 Eridani ABC 7 h - Icy body Landable
Body distance2,790 LsEarth masses0.0785Radius3,755 kmGravity0.23 gSurface temperature204 K (-69°C/-93°F)Surface pressure0.06 atmVolcanismAtmosphereThin Sulphur dioxideTerraforming︎ Selenium: 4.3%︎ Tellurium: 0.8%︎ Mercury: 0.5%︎ Molybdenum: 0.7%︎ Germanium: 3.0%︎ Manganese: 4.7%︎ Carbon: 23.3%︎ Iron: 11.4%︎ Nickel: 8.6%︎ Phosphorus: 14.9%︎ Sulphur: 27.7%︎ 4 Eridani ABC 8 - Class IV gas giant
Body distance4,029 LsRing/belt typeMetal rich (Low)Earth masses3,090.9000Radius67,272 kmGravity27.76 gSurface temperature880 K (606°C/1,124°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ 4 Eridani ABC 8 c - Rocky body Landable
Body distance4,031 LsEarth masses0.0031Radius1,020 kmGravity0.12 gSurface temperature300 K (27°C/80°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 1.4%︎ Cadmium: 1.5%︎ Molybdenum: 1.2%︎ Chromium: 8.6%︎ Vanadium: 4.7%︎ Zinc: 5.2%︎ Carbon: 15.5%︎ Iron: 19.1%︎ Nickel: 14.4%︎ Phosphorus: 9.9%︎ Sulphur: 18.5%︎ 4 Eridani ABC 8 b - Rocky body Landable
Body distance4,032 LsEarth masses0.0076Radius1,374 kmGravity0.16 gSurface temperature318 K (45°C/112°F)Surface pressure0.00 atmVolcanismMinor Silicate vapour geysersAtmosphereTerraforming︎ Tellurium: 1.4%︎ Cadmium: 1.5%︎ Niobium: 1.3%︎ Chromium: 8.6%︎ Vanadium: 4.7%︎ Zinc: 5.2%︎ Carbon: 15.5%︎ Iron: 19.1%︎ Nickel: 14.4%︎ Phosphorus: 9.9%︎ Sulphur: 18.4%︎ 4 Eridani ABC 8 a - Rocky body Landable
Body distance4,051 LsEarth masses0.0028Radius990 kmGravity0.12 gSurface temperature345 K (72°C/161°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Selenium: 3.1%︎ Yttrium: 1.2%︎ Molybdenum: 1.3%︎ Niobium: 1.4%︎ Manganese: 8.4%︎ Zirconium: 2.4%︎ Carbon: 16.5%︎ Iron: 20.3%︎ Nickel: 15.3%︎ Phosphorus: 10.6%︎ Sulphur: 19.6%︎ 4 Eridani ABC 8 d - Rocky body Landable
Body distance4,055 LsEarth masses0.0053Radius1,223 kmGravity0.14 gSurface temperature284 K (11°C/52°F)Surface pressure0.00 atmVolcanismMinor Water magmaAtmosphereTerraforming︎ Technetium: 0.7%︎ Cadmium: 1.5%︎ Tungsten: 1.1%︎ Chromium: 8.8%︎ Germanium: 5.7%︎ Zirconium: 2.3%︎ Carbon: 16.0%︎ Iron: 19.7%︎ Nickel: 14.9%︎ Phosphorus: 10.3%︎ Sulphur: 19.1%︎ 4 Eridani ABC 8 e - Rocky body
Body distance4,056 LsEarth masses0.0100Radius1,504 kmGravity0.18 gSurface temperature596 K (323°C/614°F)Surface pressure1.11 atmVolcanismAtmosphereHot WaterTerraforming︎ 4 Eridani ABC 8 e a - Rocky body
Body distance4,058 LsEarth masses0.0007Radius621 kmGravity0.07 gSurface temperature835 K (562°C/1,043°F)Surface pressure17.51 atmVolcanismMajor Silicate vapour geysersAtmosphereHot Thick WaterTerraforming︎ 4 Eridani ABC 8 f - Rocky body
Body distance4,060 LsEarth masses0.0033Radius1,040 kmGravity0.12 gSurface temperature519 K (246°C/475°F)Surface pressure0.52 atmVolcanismAtmosphereHot WaterTerraforming︎ 4 Eridani ABC 9 - Gas giant with water-based life
Body distance4,116 LsRing/belt typeMetal rich (Low)Earth masses315.8270Radius72,045 kmGravity2.47 gSurface temperature248 K (-25°C/-13°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ 4 Eridani ABC 9 b - Rocky body
Body distance4,093 LsEarth masses0.0013Radius759 kmGravity0.09 gSurface temperature224 K (-50°C/-57°F)Surface pressure0.00 atmVolcanismMajor Rocky magmaAtmosphereSulphur dioxideTerraforming︎ 4 Eridani ABC 9 c - Rocky body Landable
Body distance4,098 LsEarth masses0.0016Radius830 kmGravity0.10 gSurface temperature222 K (-51°C/-60°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Niobium: 1.4%︎ Tungsten: 1.1%︎ Arsenic: 2.6%︎ Manganese: 8.4%︎ Zirconium: 2.4%︎ Carbon: 16.6%︎ Iron: 20.4%︎ Nickel: 15.4%︎ Phosphorus: 10.6%︎ Sulphur: 19.8%︎ 4 Eridani ABC 9 a - Rocky body Landable
Body distance4,118 LsEarth masses0.0012Radius751 kmGravity0.09 gSurface temperature225 K (-49°C/-55°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Technetium: 0.7%︎ Cadmium: 1.4%︎ Tin: 1.1%︎ Chromium: 8.4%︎ Manganese: 7.7%︎ Zinc: 5.1%︎ Carbon: 15.2%︎ Iron: 18.6%︎ Nickel: 14.1%︎ Phosphorus: 9.7%︎ Sulphur: 18.1%︎ 4 Eridani ABC 10 - Gas giant with water-based life
Body distance4,821 LsRing/belt typeMetal rich (Low)Earth masses91.3414Radius48,018 kmGravity1.61 gSurface temperature176 K (-98°C/-144°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ 4 Eridani ABC 10 d - Rocky body Landable
Body distance4,840 LsEarth masses0.0073Radius1,357 kmGravity0.16 gSurface temperature172 K (-101°C/-149°F)Surface pressure0.00 atmVolcanismAtmosphereThin AmmoniaTerraforming︎ Ruthenium: 1.2%︎ Molybdenum: 1.3%︎ Tin: 1.2%︎ Arsenic: 2.5%︎ Manganese: 8.2%︎ Zinc: 5.4%︎ Carbon: 16.1%︎ Iron: 19.7%︎ Nickel: 14.9%︎ Phosphorus: 10.3%︎ Sulphur: 19.2%︎ 4 Eridani ABC 10 c - Rocky body Landable
Body distance4,860 LsEarth masses0.0068Radius1,325 kmGravity0.16 gSurface temperature173 K (-100°C/-148°F)Surface pressure0.00 atmVolcanismAtmosphereThin AmmoniaTerraforming︎ Technetium: 0.7%︎ Niobium: 1.4%︎ Tin: 1.2%︎ Manganese: 8.3%︎ Vanadium: 4.9%︎ Zirconium: 2.3%︎ Carbon: 16.3%︎ Iron: 20.0%︎ Nickel: 15.1%︎ Phosphorus: 10.4%︎ Sulphur: 19.4%︎ 4 Eridani ABC 10 b - Rocky body Landable
Body distance4,863 LsEarth masses0.0018Radius854 kmGravity0.10 gSurface temperature173 K (-100°C/-149°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 0.7%︎ Cadmium: 1.5%︎ Molybdenum: 1.3%︎ Arsenic: 2.5%︎ Germanium: 5.7%︎ Manganese: 8.1%︎ Carbon: 16.1%︎ Iron: 19.7%︎ Nickel: 14.9%︎ Phosphorus: 10.3%︎ Sulphur: 19.1%︎ 4 Eridani ABC 10 a - Rocky body Landable
Body distance4,864 LsEarth masses0.0017Radius841 kmGravity0.10 gSurface temperature172 K (-101°C/-150°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.1%︎ Cadmium: 1.4%︎ Tungsten: 1.0%︎ Chromium: 8.3%︎ Germanium: 5.3%︎ Manganese: 7.6%︎ Carbon: 15.1%︎ Iron: 18.5%︎ Nickel: 14.0%︎ Phosphorus: 9.7%︎ Sulphur: 17.9%︎ 4 Eridani ABC 11 - High metal content world
Body distance7,260 LsRing/belt typeMetallic (Low)
Rocky (Low)Earth masses26.2210Radius14,511 kmGravity5.06 gSurface temperature528 K (255°C/491°F)Surface pressure392.04 atmVolcanismMajor Silicate vapour geysersAtmosphereHot Thick Methane-richTerraforming︎ 4 Eridani ABC 11 a - Rocky body Landable
Body distance7,285 LsEarth masses0.0002Radius438 kmGravity0.05 gSurface temperature154 K (-119°C/-182°F)Surface pressure0.00 atmVolcanismAtmosphereThin Carbon dioxideTerraforming︎ Yttrium: 1.2%︎ Molybdenum: 1.3%︎ Tungsten: 1.1%︎ Arsenic: 2.6%︎ Germanium: 5.9%︎ Vanadium: 5.0%︎ Carbon: 16.6%︎ Iron: 20.4%︎ Nickel: 15.4%︎ Phosphorus: 10.6%︎ Sulphur: 19.8%