Star system
HIP 31821
Economy
Terraforming / Refinery
Government
Confederacy
Allegiance
Federation
Star type
Class K star (orange giant) Scoopable
Coordinates
135.25 / -40.31 / -91.22
Permit required
No
︎ HIP 31821 A - Class K star (orange giant)
Body distance-Solar masses0.7930Solar radius0.9411︎ HIP 31821 A 1 - Metal-rich body Landable
Body distance25 LsEarth masses0.1890Radius2,924 kmGravity0.90 gSurface temperature1,159 K (886°C/1,627°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 1.3%︎ Cadmium: 2.9%︎ Mercury: 1.6%︎ Manganese: 15.2%︎ Zinc: 10.0%︎ Zirconium: 4.3%︎ Iron: 36.8%︎ Nickel: 27.9%︎ HIP 31821 A 2 - High metal content world Landable
Body distance46 LsEarth masses0.3978Radius4,585 kmGravity0.77 gSurface temperature881 K (608°C/1,126°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.6%︎ Selenium: 2.5%︎ Tin: 1.5%︎ Tungsten: 1.3%︎ Chromium: 10.3%︎ Germanium: 4.8%︎ Carbon: 13.6%︎ Iron: 23.0%︎ Nickel: 17.4%︎ Phosphorus: 8.7%︎ Sulphur: 16.2%︎ HIP 31821 A 2 a - Rocky body Landable
Body distance46 LsEarth masses0.0196Radius1,849 kmGravity0.23 gSurface temperature881 K (608°C/1,126°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Yttrium: 1.1%︎ Niobium: 1.3%︎ Tin: 1.2%︎ Chromium: 8.6%︎ Manganese: 7.9%︎ Zinc: 5.2%︎ Carbon: 14.5%︎ Iron: 19.2%︎ Nickel: 14.5%︎ Phosphorus: 9.3%︎ Sulphur: 17.2%︎ HIP 31821 A 3 - High metal content world Landable
Body distance64 LsEarth masses0.2053Radius3,740 kmGravity0.60 gSurface temperature762 K (489°C/912°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 2.6%︎ Yttrium: 1.4%︎ Molybdenum: 1.5%︎ Tin: 1.5%︎ Arsenic: 2.2%︎ Manganese: 9.7%︎ Carbon: 14.0%︎ Iron: 23.5%︎ Nickel: 17.8%︎ Phosphorus: 9.0%︎ Sulphur: 16.7%︎ HIP 31821 B - Class M star
Body distance591 LsSolar masses0.3398Solar radius0.5567︎ HIP 31821 AB 1 - Class III gas giant
Body distance1,601 LsRing/belt typeMetal rich (Pristine)
Rocky (Pristine)Earth masses1,419.0900Radius76,061 kmGravity9.97 gSurface temperature401 K (128°C/262°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 31821 AB 1 a - Rocky body Landable
Body distance1,602 LsEarth masses0.0179Radius1,817 kmGravity0.22 gSurface temperature206 K (-67°C/-88°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Antimony: 1.2%︎ Cadmium: 1.5%︎ Tin: 1.1%︎ Arsenic: 2.4%︎ Chromium: 8.5%︎ Manganese: 7.8%︎ Carbon: 15.6%︎ Iron: 19.0%︎ Nickel: 14.4%︎ Phosphorus: 10.0%︎ Sulphur: 18.5%︎ HIP 31821 AB 1 b - Rocky body Landable
Body distance1,604 LsEarth masses0.0081Radius1,405 kmGravity0.17 gSurface temperature193 K (-80°C/-112°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Molybdenum: 1.3%︎ Niobium: 1.3%︎ Germanium: 5.7%︎ Vanadium: 4.8%︎ Zinc: 5.3%︎ Carbon: 16.2%︎ Iron: 19.7%︎ Nickel: 14.9%︎ Phosphorus: 10.4%︎ Sulphur: 19.2%︎ HIP 31821 AB 2 - Gas giant with water-based life
Body distance1,621 LsRing/belt typeRocky (Pristine)Earth masses498.2420Radius75,687 kmGravity3.54 gSurface temperature219 K (-54°C/-66°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 31821 AB 2 a - Rocky body Landable
Body distance1,622 LsEarth masses0.0007Radius639 kmGravity0.07 gSurface temperature174 K (-100°C/-147°F)Surface pressure0.00 atmVolcanismMetallic magmaAtmosphereTerraforming︎ Tellurium: 1.6%︎ Niobium: 1.4%︎ Tin: 1.2%︎ Arsenic: 2.7%︎ Zinc: 5.7%︎ Zirconium: 2.4%︎ Carbon: 17.1%︎ Iron: 20.8%︎ Nickel: 15.7%︎ Phosphorus: 11.0%︎ Sulphur: 20.4%︎ HIP 31821 AB 2 b - Rocky body Landable
Body distance1,623 LsEarth masses0.0005Radius555 kmGravity0.06 gSurface temperature170 K (-103°C/-154°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Cadmium: 1.6%︎ Molybdenum: 1.3%︎ Arsenic: 2.6%︎ Germanium: 5.8%︎ Zinc: 5.5%︎ Carbon: 16.5%︎ Iron: 20.1%︎ Nickel: 15.2%︎ Phosphorus: 10.6%︎ Sulphur: 19.7%︎ HIP 31821 AB 4 - Icy body
Body distance2,385 LsEarth masses7.5835Radius13,924 kmGravity1.59 gSurface temperature166 K (-107°C/-161°F)Surface pressure927.76 atmVolcanismWater geysersAtmosphereThick Argon-richTerraforming︎ HIP 31821 AB 3 - Gas giant with water-based life
Body distance2,462 LsEarth masses758.3440Radius76,582 kmGravity5.26 gSurface temperature239 K (-35°C/-30°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 31821 AB 3 c - Rocky body Landable
Body distance2,476 LsEarth masses0.0145Radius1,698 kmGravity0.20 gSurface temperature181 K (-92°C/-134°F)Surface pressure0.08 atmVolcanismAtmosphereThin Carbon dioxideTerraforming︎ Tellurium: 1.5%︎ Cadmium: 1.5%︎ Molybdenum: 1.3%︎ Chromium: 8.8%︎ Zinc: 5.3%︎ Zirconium: 2.3%︎ Carbon: 16.0%︎ Iron: 19.5%︎ Nickel: 14.7%︎ Phosphorus: 10.2%︎ Sulphur: 19.0%︎ HIP 31821 AB 3 a - Rocky body Landable
Body distance2,480 LsEarth masses0.0106Radius1,531 kmGravity0.18 gSurface temperature151 K (-122°C/-188°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Cadmium: 1.5%︎ Tin: 1.2%︎ Arsenic: 2.5%︎ Manganese: 8.1%︎ Vanadium: 4.8%︎ Carbon: 16.2%︎ Iron: 19.7%︎ Nickel: 14.9%︎ Phosphorus: 10.4%︎ Sulphur: 19.3%︎ HIP 31821 AB 3 b - Rocky body Landable
Body distance2,484 LsEarth masses0.0075Radius1,370 kmGravity0.16 gSurface temperature179 K (-94°C/-138°F)Surface pressure0.05 atmVolcanismAtmosphereThin Carbon dioxideTerraforming︎ Selenium: 2.9%︎ Technetium: 0.7%︎ Niobium: 1.3%︎ Tungsten: 1.0%︎ Chromium: 8.6%︎ Manganese: 7.9%︎ Carbon: 15.6%︎ Iron: 19.0%︎ Nickel: 14.4%︎ Phosphorus: 10.0%︎ Sulphur: 18.6%︎ HIP 31821 AB 3 d - Rocky body Landable
Body distance2,489 LsEarth masses0.0067Radius1,316 kmGravity0.16 gSurface temperature170 K (-103°C/-153°F)Surface pressure0.05 atmVolcanismAtmosphereThin Carbon dioxideTerraforming︎ Antimony: 1.1%︎ Tin: 1.1%︎ Tungsten: 1.0%︎ Chromium: 8.3%︎ Germanium: 5.3%︎ Manganese: 7.6%︎ Carbon: 15.2%︎ Iron: 18.5%︎ Nickel: 14.0%︎ Phosphorus: 9.7%︎ Sulphur: 18.1%︎ HIP 31821 AB 5 - Class III gas giant
Body distance3,160 LsRing/belt typeRocky (Pristine)Earth masses1,386.1200Radius75,241 kmGravity9.95 gSurface temperature360 K (87°C/188°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 31821 AB 5 f - Icy body Landable
Body distance3,129 LsEarth masses0.0350Radius2,827 kmGravity0.18 gSurface temperature109 K (-165°C/-264°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Tellurium: 0.9%︎ Cadmium: 0.9%︎ Molybdenum: 0.8%︎ Chromium: 5.5%︎ Manganese: 5.0%︎ Vanadium: 3.0%︎ Carbon: 22.1%︎ Iron: 12.1%︎ Nickel: 9.2%︎ Phosphorus: 14.2%︎ Sulphur: 26.3%︎ HIP 31821 AB 5 e - Icy body Landable
Body distance3,147 LsEarth masses0.0408Radius2,973 kmGravity0.19 gSurface temperature111 K (-162°C/-259°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 0.8%︎ Selenium: 4.2%︎ Niobium: 0.8%︎ Tungsten: 0.7%︎ Manganese: 5.1%︎ Vanadium: 3.0%︎ Carbon: 22.5%︎ Iron: 12.4%︎ Nickel: 9.3%︎ Phosphorus: 14.4%︎ Sulphur: 26.8%︎ HIP 31821 AB 5 c - Rocky body Landable
Body distance3,153 LsEarth masses0.0239Radius1,999 kmGravity0.24 gSurface temperature131 K (-142°C/-224°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.5%︎ Niobium: 1.3%︎ Tin: 1.1%︎ Chromium: 8.6%︎ Germanium: 5.5%︎ Vanadium: 4.7%︎ Carbon: 15.8%︎ Iron: 19.2%︎ Nickel: 14.5%︎ Phosphorus: 10.1%︎ Sulphur: 18.7%︎ HIP 31821 AB 5 a - Rocky body
Body distance3,156 LsEarth masses0.0057Radius1,248 kmGravity0.15 gSurface temperature222 K (-51°C/-60°F)Surface pressure0.38 atmVolcanismAtmosphereCarbon dioxideTerraforming︎ HIP 31821 AB 5 b - Rocky body Landable
Body distance3,166 LsEarth masses0.0067Radius1,319 kmGravity0.16 gSurface temperature175 K (-98°C/-144°F)Surface pressure0.05 atmVolcanismAtmosphereThin Carbon dioxideTerraforming︎ Polonium: 0.5%︎ Selenium: 3.0%︎ Mercury: 0.9%︎ Tungsten: 1.1%︎ Germanium: 5.7%︎ Manganese: 8.2%︎ Carbon: 16.2%︎ Iron: 19.8%︎ Nickel: 14.9%︎ Phosphorus: 10.4%︎ Sulphur: 19.3%︎ HIP 31821 AB 5 d - Icy body Landable
Body distance3,173 LsEarth masses0.0505Radius3,184 kmGravity0.20 gSurface temperature114 K (-160°C/-255°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 0.8%︎ Niobium: 0.9%︎ Tin: 0.8%︎ Arsenic: 1.6%︎ Manganese: 5.2%︎ Zinc: 3.4%︎ Carbon: 23.0%︎ Iron: 12.6%︎ Nickel: 9.6%︎ Phosphorus: 14.7%︎ Sulphur: 27.4%︎ HIP 31821 AB 6 - Class I gas giant
Body distance4,224 LsEarth masses271.7280Radius61,780 kmGravity2.89 gSurface temperature123 K (-151°C/-239°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 31821 AB 6 a - Icy body Landable
Body distance4,221 LsEarth masses0.0008Radius834 kmGravity0.05 gSurface temperature84 K (-189°C/-308°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 0.7%︎ Niobium: 0.8%︎ Tungsten: 0.7%︎ Chromium: 5.4%︎ Manganese: 4.9%︎ Zinc: 3.2%︎ Carbon: 22.4%︎ Iron: 11.9%︎ Nickel: 9.0%︎ Phosphorus: 14.3%︎ Sulphur: 26.6%︎ HIP 31821 AB 6 b - Icy body Landable
Body distance4,228 LsEarth masses0.0017Radius1,046 kmGravity0.06 gSurface temperature84 K (-189°C/-309°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 0.7%︎ Tin: 0.7%︎ Tungsten: 0.7%︎ Chromium: 5.5%︎ Manganese: 5.1%︎ Zirconium: 1.4%︎ Carbon: 22.8%︎ Iron: 12.2%︎ Nickel: 9.3%︎ Phosphorus: 14.6%︎ Sulphur: 27.1%︎ HIP 31821 AB 6 c - Icy body Landable
Body distance4,231 LsEarth masses0.0015Radius1,013 kmGravity0.06 gSurface temperature83 K (-190°C/-310°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Yttrium: 0.7%︎ Cadmium: 0.9%︎ Mercury: 0.5%︎ Chromium: 5.4%︎ Manganese: 5.0%︎ Zinc: 3.3%︎ Carbon: 22.3%︎ Iron: 12.0%︎ Nickel: 9.1%︎ Phosphorus: 14.3%︎ Sulphur: 26.5%︎ HIP 31821 AB 6 d - Icy body Landable
Body distance4,233 LsEarth masses0.0010Radius896 kmGravity0.05 gSurface temperature83 K (-190°C/-310°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 0.8%︎ Selenium: 4.4%︎ Cadmium: 1.0%︎ Molybdenum: 0.8%︎ Vanadium: 3.1%︎ Zirconium: 1.5%︎ Carbon: 23.5%︎ Iron: 12.5%︎ Nickel: 9.5%︎ Phosphorus: 15.1%︎ Sulphur: 28.0%︎ HIP 31821 AB 6 e - Icy body Landable
Body distance4,238 LsEarth masses0.0044Radius1,440 kmGravity0.09 gSurface temperature83 K (-190°C/-311°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 0.7%︎ Selenium: 4.2%︎ Cadmium: 0.9%︎ Tungsten: 0.7%︎ Chromium: 5.4%︎ Vanadium: 3.0%︎ Carbon: 22.6%︎ Iron: 12.0%︎ Nickel: 9.1%︎ Phosphorus: 14.5%︎ Sulphur: 26.9%︎ HIP 31821 AB 7 - Icy body
Body distance5,660 LsRing/belt typeIcy (Pristine)Earth masses41.8806Radius20,445 kmGravity4.07 gSurface temperature559 K (286°C/546°F)Surface pressure198,163.34 atmVolcanismWater geysersAtmosphereHot Thick Methane-richTerraforming︎ HIP 31821 C - Class K star
Body distance103,371 LsSolar masses0.6367Solar radius0.7767︎ HIP 31821 C 6 - Icy body
Body distance99,827 LsEarth masses1.0446Radius7,838 kmGravity0.69 gSurface temperature134 K (-139°C/-218°F)Surface pressure1,842.52 atmVolcanismWater geysersAtmosphereThick NitrogenTerraforming︎ HIP 31821 C 4 - High metal content world
Body distance102,532 LsEarth masses0.4596Radius4,806 kmGravity0.81 gSurface temperature170 K (-103°C/-154°F)Surface pressure0.77 atmVolcanismAtmosphereNitrogenTerraforming︎ HIP 31821 C 1 - High metal content world Landable
Body distance103,074 LsEarth masses0.0517Radius2,410 kmGravity0.36 gSurface temperature233 K (-40°C/-40°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.4%︎ Cadmium: 1.7%︎ Tin: 1.4%︎ Chromium: 9.9%︎ Germanium: 4.6%︎ Vanadium: 5.4%︎ Carbon: 13.1%︎ Iron: 22.0%︎ Nickel: 16.6%︎ Phosphorus: 8.4%︎ Sulphur: 15.6%︎ HIP 31821 C 2 - High metal content world
Body distance103,467 LsEarth masses0.1324Radius3,245 kmGravity0.51 gSurface temperature250 K (-23°C/-9°F)Surface pressure0.87 atmVolcanismAtmosphereNitrogenTerraformingTerraforming︎ HIP 31821 C 3 - High metal content world Landable
Body distance103,641 LsEarth masses0.0841Radius2,818 kmGravity0.43 gSurface temperature214 K (-59°C/-74°F)Surface pressure0.00 atmVolcanismAtmosphereThin Sulphur dioxideTerraformingTerraformable︎ Antimony: 1.0%︎ Niobium: 1.5%︎ Tin: 1.5%︎ Arsenic: 2.1%︎ Chromium: 10.1%︎ Zinc: 6.1%︎ Carbon: 13.5%︎ Iron: 22.5%︎ Nickel: 17.0%︎ Phosphorus: 8.6%︎ Sulphur: 16.0%︎ HIP 31821 C 5 - Icy body
Body distance103,962 LsEarth masses0.8543Radius7,423 kmGravity0.63 gSurface temperature78 K (-195°C/-319°F)Surface pressure1.08 atmVolcanismCarbon dioxide geysersAtmosphereArgon-richTerraforming