Star system
HIP 21821
Economy
Agriculture / Terraforming
Government
Patronage
Allegiance
Empire
Star type
Class F star Scoopable
Coordinates
138 / -119.97 / -23.69
Permit required
No
︎ HIP 21821 - Class F star
Body distance-Solar masses1.1445Solar radius1.0602︎ HIP 21821 1 - High metal content world Landable
Body distance271 LsEarth masses0.2074Radius3,754 kmGravity0.60 gSurface temperature436 K (163°C/325°F)Surface pressure0.03 atmVolcanismAtmosphereThin Carbon dioxideTerraforming︎ Antimony: 1.0%︎ Cadmium: 1.7%︎ Tungsten: 1.2%︎ Chromium: 9.8%︎ Vanadium: 5.3%︎ Zinc: 5.9%︎ Carbon: 13.0%︎ Iron: 21.8%︎ Nickel: 16.5%︎ Phosphorus: 8.3%︎ Sulphur: 15.5%︎ HIP 21821 2 - High metal content world
Body distance341 LsEarth masses0.2964Radius4,198 kmGravity0.68 gSurface temperature330 K (57°C/135°F)Surface pressure0.33 atmVolcanismAtmosphereSulphur dioxideTerraforming︎ HIP 21821 3 - Water world
Body distance516 LsEarth masses0.2088Radius3,762 kmGravity0.60 gSurface temperature363 K (90°C/193°F)Surface pressure1.14 atmVolcanismAtmosphereNitrogenTerraformingTerraforming︎ HIP 21821 4 - High metal content world
Body distance567 LsEarth masses0.1815Radius3,600 kmGravity0.57 gSurface temperature363 K (90°C/194°F)Surface pressure0.27 atmVolcanismAtmosphereCarbon dioxideTerraformingTerraformable︎ HIP 21821 5 - High metal content world Landable
Body distance855 LsEarth masses0.1291Radius3,231 kmGravity0.50 gSurface temperature221 K (-52°C/-61°F)Surface pressure0.00 atmVolcanismAtmosphereThin Carbon dioxideTerraformingTerraformable︎ Yttrium: 1.3%︎ Mercury: 1.0%︎ Tin: 1.4%︎ Chromium: 9.9%︎ Germanium: 4.6%︎ Zinc: 6.0%︎ Carbon: 13.1%︎ Iron: 22.0%︎ Nickel: 16.6%︎ Phosphorus: 8.4%︎ Sulphur: 15.6%︎ HIP 21821 6 - High metal content world Landable
Body distance1,053 LsEarth masses0.1730Radius3,564 kmGravity0.55 gSurface temperature203 K (-71°C/-95°F)Surface pressure0.03 atmVolcanismAtmosphereThin Carbon dioxide-richTerraforming︎ Ruthenium: 1.3%︎ Tin: 1.4%︎ Tungsten: 1.1%︎ Chromium: 9.4%︎ Manganese: 8.6%︎ Zinc: 5.7%︎ Carbon: 12.7%︎ Iron: 20.8%︎ Nickel: 15.7%︎ Phosphorus: 8.2%︎ Sulphur: 15.2%︎ HIP 21821 7 - High metal content world Landable
Body distance1,055 LsEarth masses0.0877Radius2,887 kmGravity0.43 gSurface temperature182 K (-91°C/-132°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 2.7%︎ Technetium: 0.8%︎ Molybdenum: 1.5%︎ Tungsten: 1.3%︎ Arsenic: 2.2%︎ Chromium: 10.4%︎ Carbon: 14.4%︎ Iron: 23.0%︎ Nickel: 17.4%︎ Phosphorus: 9.2%︎ Sulphur: 17.1%︎ HIP 21821 8 - High metal content world Landable
Body distance1,411 LsEarth masses0.1158Radius3,155 kmGravity0.47 gSurface temperature167 K (-106°C/-158°F)Surface pressure0.05 atmVolcanismAtmosphereThin OxygenTerraforming︎ Tellurium: 1.1%︎ Cadmium: 1.6%︎ Tungsten: 1.1%︎ Chromium: 9.3%︎ Manganese: 8.5%︎ Zinc: 5.6%︎ Carbon: 12.9%︎ Iron: 20.6%︎ Nickel: 15.6%︎ Phosphorus: 8.3%︎ Sulphur: 15.3%︎ HIP 21821 9 - Icy body
Body distance1,866 LsEarth masses0.6645Radius6,877 kmGravity0.57 gSurface temperature177 K (-96°C/-141°F)Surface pressure1,306.22 atmVolcanismMajor Water magmaAtmosphereThick Argon-richTerraforming︎ HIP 21821 10 - Icy body
Body distance2,544 LsEarth masses0.5975Radius6,657 kmGravity0.55 gSurface temperature128 K (-145°C/-229°F)Surface pressure190.22 atmVolcanismWater magmaAtmosphereThick Argon-richTerraforming