Star system
HIP 77857
Economy
Government
Allegiance
Independent
Star type
Class B star Scoopable
Coordinates
386.47 / 49.47 / 713.97
Permit required
No
︎ HIP 77857 - Class B star
Body distance-Solar masses15.8086Solar radius6.1622︎ HIP 77857 2 - High metal content world
Body distance1,069 LsRing/belt typeRocky (Pristine)Earth masses12.5316Radius12,134 kmGravity3.46 gSurface temperature2,516 K (2,243°C/4,069°F)Surface pressure32,191.66 atmVolcanismMajor Silicate vapour geysersAtmosphereHot Thick WaterTerraforming︎ HIP 77857 1 b - Rocky body Landable
Body distance1,085 LsEarth masses0.0443Radius2,442 kmGravity0.30 gSurface temperature341 K (68°C/154°F)Surface pressure0.00 atmVolcanismMinor Rocky magmaAtmosphereTerraforming︎ Tellurium: 1.4%︎ Cadmium: 1.5%︎ Molybdenum: 1.2%︎ Manganese: 7.9%︎ Vanadium: 4.7%︎ Zinc: 5.2%︎ Carbon: 15.7%︎ Iron: 19.1%︎ Nickel: 14.5%︎ Phosphorus: 10.1%︎ Sulphur: 18.7%︎ HIP 77857 1 a - Rocky body Landable
Body distance1,087 LsEarth masses0.0624Radius2,727 kmGravity0.34 gSurface temperature351 K (78°C/172°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Polonium: 0.5%︎ Cadmium: 1.5%︎ Molybdenum: 1.2%︎ Chromium: 8.6%︎ Germanium: 5.5%︎ Zinc: 5.2%︎ Carbon: 15.6%︎ Iron: 19.0%︎ Nickel: 14.4%︎ Phosphorus: 10.0%︎ Sulphur: 18.5%︎ HIP 77857 4 - High metal content world
Body distance1,337 LsRing/belt typeMetal rich (Pristine)Earth masses8.8270Radius11,141 kmGravity2.89 gSurface temperature2,266 K (1,992°C/3,618°F)Surface pressure20,802.86 atmVolcanismMajor Silicate vapour geysersAtmosphereHot Thick WaterTerraforming︎ HIP 77857 3 - Helium-rich gas giant
Body distance1,342 LsRing/belt typeMetallic (Pristine)
Rocky (Pristine)Earth masses3,035.0900Radius63,984 kmGravity30.13 gSurface temperature941 K (668°C/1,235°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 77857 5 a - Helium-rich gas giant
Body distance1,801 LsRing/belt typeMetal rich (Pristine)
Rocky (Pristine)Earth masses227.8740Radius70,059 kmGravity1.89 gSurface temperature274 K (1°C/33°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 77857 5 a a - Rocky body
Body distance1,801 LsEarth masses0.0004Radius508 kmGravity0.06 gSurface temperature754 K (481°C/897°F)Surface pressure11.55 atmVolcanismMajor Rocky magmaAtmosphereHot Thick Sulphur dioxideTerraforming︎ HIP 77857 6 a - Helium-rich gas giant
Body distance2,205 LsRing/belt typeRocky (Pristine)Earth masses840.9290Radius77,540 kmGravity5.68 gSurface temperature376 K (103°C/217°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 77857 6 a a - Rocky body Landable
Body distance2,204 LsEarth masses0.0016Radius831 kmGravity0.09 gSurface temperature282 K (9°C/48°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Selenium: 3.3%︎ Tellurium: 1.6%︎ Niobium: 1.3%︎ Tungsten: 1.0%︎ Vanadium: 4.6%︎ Zinc: 5.1%︎ Carbon: 17.9%︎ Iron: 18.6%︎ Nickel: 14.1%︎ Phosphorus: 11.4%︎ Sulphur: 21.2%︎ HIP 77857 8 - Class II gas giant
Body distance3,203 LsRing/belt typeRocky (Pristine)Earth masses148.8580Radius58,884 kmGravity1.74 gSurface temperature205 K (-68°C/-90°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 77857 8 a - Rocky body Landable
Body distance3,203 LsEarth masses0.0009Radius686 kmGravity0.08 gSurface temperature199 K (-74°C/-101°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Antimony: 1.2%︎ Cadmium: 1.5%︎ Niobium: 1.3%︎ Chromium: 8.5%︎ Germanium: 5.4%︎ Vanadium: 4.7%︎ Carbon: 15.6%︎ Iron: 19.0%︎ Nickel: 14.4%︎ Phosphorus: 10.0%︎ Sulphur: 18.5%︎ HIP 77857 7 g - Rocky body Landable
Body distance3,253 LsEarth masses0.0287Radius2,121 kmGravity0.26 gSurface temperature217 K (-57°C/-70°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Molybdenum: 1.2%︎ Tungsten: 1.0%︎ Chromium: 8.5%︎ Germanium: 5.4%︎ Zinc: 5.2%︎ Carbon: 15.6%︎ Iron: 19.0%︎ Nickel: 14.4%︎ Phosphorus: 10.0%︎ Sulphur: 18.5%︎ HIP 77857 7 b - Rocky body
Body distance3,277 LsEarth masses0.0090Radius1,452 kmGravity0.17 gSurface temperature1,002 K (729°C/1,344°F)Surface pressure93.30 atmVolcanismAtmosphereHot Thick WaterTerraforming︎ HIP 77857 7 a - Rocky body Landable
Body distance3,278 LsEarth masses0.0312Radius2,176 kmGravity0.27 gSurface temperature284 K (11°C/51°F)Surface pressure0.00 atmVolcanismMinor Silicate vapour geysersAtmosphereTerraforming︎ Polonium: 0.5%︎ Cadmium: 1.5%︎ Molybdenum: 1.2%︎ Chromium: 8.6%︎ Germanium: 5.4%︎ Zinc: 5.2%︎ Carbon: 15.5%︎ Iron: 19.1%︎ Nickel: 14.5%︎ Phosphorus: 10.0%︎ Sulphur: 18.5%︎ HIP 77857 7 c - Rocky body
Body distance3,282 LsEarth masses0.0103Radius1,517 kmGravity0.18 gSurface temperature887 K (614°C/1,137°F)Surface pressure44.43 atmVolcanismAtmosphereHot Thick WaterTerraforming︎ HIP 77857 7 f - Rocky body Landable
Body distance3,282 LsEarth masses0.0306Radius2,167 kmGravity0.27 gSurface temperature227 K (-46°C/-52°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Cadmium: 1.5%︎ Tin: 1.1%︎ Chromium: 8.6%︎ Vanadium: 4.7%︎ Zinc: 5.2%︎ Carbon: 15.6%︎ Iron: 19.1%︎ Nickel: 14.4%︎ Phosphorus: 10.0%︎ Sulphur: 18.6%︎ HIP 77857 7 e - Rocky body Landable
Body distance3,286 LsEarth masses0.0093Radius1,467 kmGravity0.18 gSurface temperature242 K (-31°C/-25°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Tellurium: 1.4%︎ Molybdenum: 1.2%︎ Tin: 1.1%︎ Chromium: 8.3%︎ Germanium: 5.3%︎ Manganese: 7.6%︎ Carbon: 15.1%︎ Iron: 18.4%︎ Nickel: 13.9%︎ Phosphorus: 9.7%︎ Sulphur: 18.0%︎ HIP 77857 7 d - Rocky body Landable
Body distance3,286 LsEarth masses0.0107Radius1,537 kmGravity0.18 gSurface temperature242 K (-31°C/-25°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Cadmium: 1.5%︎ Niobium: 1.3%︎ Arsenic: 2.5%︎ Germanium: 5.6%︎ Manganese: 8.1%︎ Carbon: 16.0%︎ Iron: 19.6%︎ Nickel: 14.8%︎ Phosphorus: 10.3%︎ Sulphur: 19.1%︎ HIP 77857 1 - Class Y star (brown dwarf)
Body distance1,091 LsSolar masses0.0117Solar radius0.0600︎ HIP 77857 5 - Class Y star (brown dwarf)
Body distance1,782 LsSolar masses0.0156Solar radius0.0803︎ HIP 77857 6 - Class T star (brown dwarf)
Body distance2,231 LsSolar masses0.0391Solar radius0.1239︎ HIP 77857 7 - Class Y star (brown dwarf)
Body distance3,277 LsSolar masses0.0313Solar radius0.1156