Star system
Siris
Economy
Extraction / Colony
Government
Dictatorship
Allegiance
Independent
Star type
Class M star Scoopable
Coordinates
131.06 / -73.59 / -11.25
Permit required
No
︎ Siris - Class M star
Body distance-Solar masses0.4102Solar radius0.6109︎ Siris 1 - High metal content world Landable
Body distance7 LsEarth masses0.6682Radius5,385 kmGravity0.94 gSurface temperature860 K (587°C/1,089°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Ruthenium: 1.4%︎ Molybdenum: 1.4%︎ Niobium: 1.5%︎ Manganese: 9.1%︎ Vanadium: 5.4%︎ Zinc: 6.0%︎ Carbon: 13.0%︎ Iron: 21.9%︎ Nickel: 16.6%︎ Phosphorus: 8.3%︎ Sulphur: 15.5%︎ Siris 2 - High metal content world
Body distance12 LsEarth masses2.1298Radius7,576 kmGravity1.51 gSurface temperature708 K (435°C/814°F)Surface pressure3.07 atmVolcanismMinor Metallic magmaAtmosphereHot Sulphur dioxideTerraforming︎ Siris 3 - Class I gas giant
Body distance836 LsRing/belt typeIcy (Low)
Rocky (Low)Earth masses358.2340Radius74,132 kmGravity2.65 gSurface temperature123 K (-151°C/-239°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Siris 3 f - Icy body Landable
Body distance827 LsEarth masses0.0022Radius1,147 kmGravity0.07 gSurface temperature73 K (-200°C/-328°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 0.8%︎ Selenium: 4.4%︎ Molybdenum: 0.8%︎ Tungsten: 0.7%︎ Vanadium: 3.1%︎ Zirconium: 1.5%︎ Carbon: 23.5%︎ Iron: 12.7%︎ Nickel: 9.6%︎ Phosphorus: 15.1%︎ Sulphur: 28.0%︎ Siris 3 e - Icy body Landable
Body distance831 LsEarth masses0.0017Radius1,048 kmGravity0.06 gSurface temperature74 K (-200°C/-327°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 4.3%︎ Technetium: 0.4%︎ Niobium: 0.9%︎ Tungsten: 0.7%︎ Vanadium: 3.1%︎ Zinc: 3.4%︎ Carbon: 23.1%︎ Iron: 12.4%︎ Nickel: 9.4%︎ Phosphorus: 14.8%︎ Sulphur: 27.5%︎ Siris 3 a - Icy body Landable
Body distance836 LsEarth masses0.0014Radius980 kmGravity0.06 gSurface temperature78 K (-195°C/-320°F)Surface pressure0.00 atmVolcanismCarbon dioxide geysersAtmosphereTerraforming︎ Antimony: 0.7%︎ Mercury: 0.5%︎ Tin: 0.7%︎ Germanium: 3.5%︎ Manganese: 5.1%︎ Zinc: 3.3%︎ Carbon: 22.8%︎ Iron: 12.3%︎ Nickel: 9.3%︎ Phosphorus: 14.6%︎ Sulphur: 27.1%︎ Siris 3 b - Icy body Landable
Body distance837 LsEarth masses0.0006Radius724 kmGravity0.04 gSurface temperature77 K (-197°C/-322°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 4.3%︎ Tellurium: 0.9%︎ Tin: 0.7%︎ Tungsten: 0.7%︎ Arsenic: 1.6%︎ Manganese: 5.1%︎ Carbon: 23.0%︎ Iron: 12.4%︎ Nickel: 9.3%︎ Phosphorus: 14.7%︎ Sulphur: 27.3%︎ Siris 3 c - Icy body Landable
Body distance838 LsEarth masses0.0012Radius944 kmGravity0.06 gSurface temperature75 K (-198°C/-324°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 0.8%︎ Cadmium: 0.9%︎ Niobium: 0.8%︎ Chromium: 5.5%︎ Vanadium: 3.0%︎ Zinc: 3.3%︎ Carbon: 22.7%︎ Iron: 12.2%︎ Nickel: 9.2%︎ Phosphorus: 14.5%︎ Sulphur: 27.0%︎ Siris 3 d - Icy body Landable
Body distance839 LsEarth masses0.0008Radius806 kmGravity0.05 gSurface temperature74 K (-199°C/-326°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.3%︎ Selenium: 4.2%︎ Cadmium: 0.9%︎ Niobium: 0.8%︎ Chromium: 5.5%︎ Vanadium: 3.0%︎ Carbon: 22.6%︎ Iron: 12.2%︎ Nickel: 9.2%︎ Phosphorus: 14.5%︎ Sulphur: 26.9%︎ Siris 4 - Class I gas giant
Body distance1,099 LsEarth masses338.5100Radius73,646 kmGravity2.54 gSurface temperature110 K (-164°C/-262°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Siris 4 b - Icy body
Body distance1,100 LsEarth masses0.0055Radius1,553 kmGravity0.09 gSurface temperature112 K (-161°C/-258°F)Surface pressure0.42 atmVolcanismAtmosphereMethaneTerraforming︎ Siris 4 a - Icy body
Body distance1,101 LsEarth masses0.0051Radius1,516 kmGravity0.09 gSurface temperature202 K (-71°C/-95°F)Surface pressure38.83 atmVolcanismMajor Water magmaAtmosphereThick MethaneTerraforming︎ Siris 4 c - Icy body
Body distance1,105 LsEarth masses0.0087Radius1,799 kmGravity0.11 gSurface temperature115 K (-158°C/-253°F)Surface pressure0.56 atmVolcanismAtmosphereMethaneTerraforming︎ Siris 5 - Class I gas giant
Body distance1,517 LsRing/belt typeIcy (Low)
Rocky (Low)Earth masses79.0714Radius55,134 kmGravity1.06 gSurface temperature63 K (-210°C/-345°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Siris 5 d - Icy body Landable
Body distance1,506 LsEarth masses0.0346Radius2,862 kmGravity0.17 gSurface temperature51 K (-222°C/-367°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 4.2%︎ Yttrium: 0.7%︎ Mercury: 0.5%︎ Niobium: 0.8%︎ Chromium: 5.3%︎ Manganese: 4.8%︎ Carbon: 22.4%︎ Iron: 11.7%︎ Nickel: 8.8%︎ Phosphorus: 14.3%︎ Sulphur: 26.6%︎ Siris 5 b - Icy body Landable
Body distance1,516 LsEarth masses0.0019Radius1,097 kmGravity0.07 gSurface temperature52 K (-221°C/-365°F)Surface pressure0.00 atmVolcanismMajor Water magmaAtmosphereTerraforming︎ Technetium: 0.5%︎ Mercury: 0.6%︎ Molybdenum: 0.8%︎ Arsenic: 1.7%︎ Manganese: 5.3%︎ Zirconium: 1.5%︎ Carbon: 23.7%︎ Iron: 12.9%︎ Nickel: 9.7%︎ Phosphorus: 15.2%︎ Sulphur: 28.2%︎ Siris 5 a - Icy body Landable
Body distance1,517 LsEarth masses0.0007Radius769 kmGravity0.05 gSurface temperature53 K (-220°C/-364°F)Surface pressure0.00 atmVolcanismMajor Water geysersAtmosphereTerraforming︎ Ruthenium: 0.8%︎ Mercury: 0.5%︎ Molybdenum: 0.8%︎ Germanium: 3.6%︎ Vanadium: 3.1%︎ Zinc: 3.4%︎ Carbon: 23.2%︎ Iron: 12.5%︎ Nickel: 9.5%︎ Phosphorus: 14.9%︎ Sulphur: 27.6%︎ Siris 5 c - Icy body Landable
Body distance1,519 LsEarth masses0.0012Radius948 kmGravity0.06 gSurface temperature52 K (-221°C/-366°F)Surface pressure0.00 atmVolcanismAtmosphereThin ArgonTerraforming︎ Polonium: 0.3%︎ Mercury: 0.5%︎ Tungsten: 0.7%︎ Chromium: 5.4%︎ Manganese: 5.0%︎ Zinc: 3.3%︎ Carbon: 22.5%︎ Iron: 12.1%︎ Nickel: 9.1%︎ Phosphorus: 14.4%︎ Sulphur: 26.7%︎ Siris 6 - Icy body
Body distance2,128 LsRing/belt typeIcy (Low)
Rocky (Low)Earth masses5.3421Radius13,329 kmGravity1.22 gSurface temperature44 K (-229°C/-380°F)Surface pressure0.74 atmVolcanismMajor Water geysersAtmosphereHeliumTerraforming︎ Siris 6 a - Icy body Landable
Body distance2,132 LsEarth masses0.0002Radius537 kmGravity0.03 gSurface temperature43 K (-230°C/-382°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 4.2%︎ Tellurium: 0.9%︎ Molybdenum: 0.8%︎ Tungsten: 0.7%︎ Germanium: 3.5%︎ Manganese: 5.0%︎ Carbon: 22.5%︎ Iron: 12.1%︎ Nickel: 9.2%︎ Phosphorus: 14.4%︎ Sulphur: 26.8%