Star system
HIP 18857
Economy
Service / Agriculture
Government
Corporate
Allegiance
Empire
Star type
Class G star Scoopable
Coordinates
135.06 / -174 / -74.84
Permit required
No
︎ HIP 18857 A - Class G star
Body distance-Solar masses1.1836Solar radius1.0846︎ HIP 18857 A 1 - High metal content world
Body distance281 LsEarth masses0.5901Radius5,188 kmGravity0.89 gSurface temperature679 K (406°C/763°F)Surface pressure1.52 atmVolcanismAtmosphereHot Sulphur dioxideTerraforming︎ HIP 18857 A 2 - High metal content world
Body distance345 LsEarth masses0.5329Radius5,029 kmGravity0.86 gSurface temperature632 K (358°C/677°F)Surface pressure1.45 atmVolcanismAtmosphereHot Sulphur dioxideTerraforming︎ HIP 18857 A 3 - High metal content world
Body distance513 LsEarth masses0.7636Radius5,610 kmGravity0.99 gSurface temperature1,008 K (735°C/1,354°F)Surface pressure126.20 atmVolcanismAtmosphereHot Thick Carbon dioxideTerraforming︎ HIP 18857 A 4 - High metal content world
Body distance962 LsEarth masses0.9093Radius5,912 kmGravity1.06 gSurface temperature808 K (534°C/994°F)Surface pressure146.22 atmVolcanismAtmosphereHot Thick Carbon dioxideTerraformingTerraforming︎ HIP 18857 A 5 - Water world
Body distance1,738 LsEarth masses0.4145Radius4,655 kmGravity0.78 gSurface temperature248 K (-25°C/-13°F)Surface pressure0.98 atmVolcanismAtmosphereNitrogenTerraformingTerraformable︎ HIP 18857 B - Class F star
Body distance15,341 LsSolar masses1.1719Solar radius1.2079︎ HIP 18857 B 4 - High metal content world
Body distance13,809 LsEarth masses1.0653Radius6,190 kmGravity1.13 gSurface temperature805 K (532°C/990°F)Surface pressure179.52 atmVolcanismRocky magmaAtmosphereHot Thick Carbon dioxideTerraformingTerraformable︎ HIP 18857 B 4 a - Rocky body
Body distance13,807 LsEarth masses0.0280Radius2,079 kmGravity0.26 gSurface temperature619 K (345°C/654°F)Surface pressure2.26 atmVolcanismAtmosphereHot WaterTerraforming︎ HIP 18857 B 2 - High metal content world
Body distance14,747 LsEarth masses0.3757Radius4,516 kmGravity0.75 gSurface temperature408 K (135°C/275°F)Surface pressure0.32 atmVolcanismAtmosphereSulphur dioxideTerraforming︎ HIP 18857 B 1 - High metal content world Landable
Body distance15,347 LsEarth masses0.4850Radius4,886 kmGravity0.83 gSurface temperature542 K (269°C/517°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Technetium: 0.8%︎ Mercury: 1.0%︎ Niobium: 1.5%︎ Arsenic: 2.1%︎ Chromium: 9.9%︎ Manganese: 9.1%︎ Carbon: 13.1%︎ Iron: 22.0%︎ Nickel: 16.6%︎ Phosphorus: 8.4%︎ Sulphur: 15.6%︎ HIP 18857 B 3 - High metal content world
Body distance15,773 LsEarth masses0.4026Radius4,614 kmGravity0.77 gSurface temperature532 K (259°C/498°F)Surface pressure0.86 atmVolcanismAtmosphereHot Carbon dioxideTerraforming︎ HIP 18857 C - Class M star
Body distance65,771 LsSolar masses0.4609Solar radius0.6344︎ HIP 18857 C 6 - Icy body
Body distance64,284 LsEarth masses2.1681Radius9,777 kmGravity0.92 gSurface temperature454 K (181°C/358°F)Surface pressure10,138.07 atmVolcanismMajor Water geysersAtmosphereThick Methane-richTerraforming︎ HIP 18857 C 2 - Icy body
Body distance65,030 LsEarth masses0.7111Radius6,726 kmGravity0.64 gSurface temperature275 K (1°C/35°F)Surface pressure1,312.27 atmVolcanismMajor Water magmaAtmosphereThick Argon-richTerraforming︎ HIP 18857 C 3 - Icy body
Body distance65,116 LsEarth masses0.8346Radius7,061 kmGravity0.68 gSurface temperature174 K (-99°C/-146°F)Surface pressure1,486.35 atmVolcanismMinor Carbon dioxide geysersAtmosphereThick Argon-richTerraforming︎ HIP 18857 C 5 - Icy body
Body distance65,633 LsEarth masses2.8056Radius10,526 kmGravity1.03 gSurface temperature516 K (243°C/470°F)Surface pressure12,638.34 atmVolcanismMajor Water geysersAtmosphereHot Thick Methane-richTerraforming︎ HIP 18857 C 1 - High metal content world
Body distance65,765 LsEarth masses0.8327Radius5,752 kmGravity1.02 gSurface temperature230 K (-43°C/-45°F)Surface pressure1.27 atmVolcanismAtmosphereNitrogenTerraforming︎ HIP 18857 C 1 a - Rocky body Landable
Body distance66,013 LsEarth masses0.0163Radius1,743 kmGravity0.22 gSurface temperature164 K (-109°C/-165°F)Surface pressure0.00 atmVolcanismAtmosphereThin AmmoniaTerraforming︎ Yttrium: 1.1%︎ Molybdenum: 1.3%︎ Tin: 1.2%︎ Chromium: 8.7%︎ Germanium: 5.1%︎ Manganese: 7.9%︎ Carbon: 14.5%︎ Iron: 19.2%︎ Nickel: 14.6%︎ Phosphorus: 9.3%︎ Sulphur: 17.2%︎ HIP 18857 C 4 - Icy body
Body distance65,897 LsEarth masses3.5763Radius11,271 kmGravity1.14 gSurface temperature585 K (312°C/593°F)Surface pressure15,632.77 atmVolcanismMajor Water geysersAtmosphereHot Thick Methane-richTerraforming