Star system
HIP 28711
Economy
Government
Allegiance
Independent
Star type
Class O star Scoopable
Coordinates
7.88 / 28.75 / -354.06
Permit required
No
︎ HIP 28711 A - Class O star
Body distance-Solar masses115.9020Solar radius19.5475︎ HIP 28711 B - Black hole
Body distance155,897 LsSolar masses15.5859Solar radius0.0001︎ HIP 28711 B 4 - Class III gas giant
Body distance152,614 LsRing/belt typeMetal rich (Pristine)Earth masses1,548.1100Radius73,577 kmGravity11.62 gSurface temperature337 K (64°C/147°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 28711 B 4 a - Icy body
Body distance152,614 LsEarth masses0.0791Radius3,665 kmGravity0.24 gSurface temperature94 K (-179°C/-290°F)Surface pressure2.62 atmVolcanismMajor Water geysersAtmosphereArgonTerraforming︎ HIP 28711 B 3 - Class IV gas giant
Body distance152,623 LsRing/belt typeMetal rich (Pristine)Earth masses3,905.0500Radius61,356 kmGravity42.16 gSurface temperature953 K (680°C/1,256°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 28711 B 3 c - Rocky ice world Landable
Body distance152,618 LsEarth masses0.0363Radius2,399 kmGravity0.26 gSurface temperature129 K (-144°C/-228°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Tellurium: 1.4%︎ Cadmium: 1.4%︎ Molybdenum: 1.2%︎ Vanadium: 4.6%︎ Zinc: 5.1%︎ Zirconium: 2.2%︎ Carbon: 18.2%︎ Iron: 18.6%︎ Nickel: 14.1%︎ Phosphorus: 11.6%︎ Sulphur: 21.6%︎ HIP 28711 B 3 d - Rocky ice world Landable
Body distance152,619 LsEarth masses0.0229Radius2,068 kmGravity0.22 gSurface temperature129 K (-144°C/-228°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Antimony: 1.0%︎ Molybdenum: 1.1%︎ Tin: 1.0%︎ Chromium: 7.7%︎ Manganese: 7.1%︎ Vanadium: 4.2%︎ Carbon: 16.8%︎ Iron: 17.2%︎ Nickel: 13.0%︎ Phosphorus: 10.7%︎ Sulphur: 20.0%︎ HIP 28711 B 3 a - Rocky body
Body distance152,621 LsEarth masses0.0663Radius2,781 kmGravity0.35 gSurface temperature197 K (-76°C/-105°F)Surface pressure0.22 atmVolcanismMinor Metallic magmaAtmosphereSulphur dioxideTerraforming︎ HIP 28711 B 3 e - Rocky ice world Landable
Body distance152,625 LsEarth masses0.0192Radius1,952 kmGravity0.20 gSurface temperature111 K (-162°C/-260°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 3.2%︎ Tellurium: 1.3%︎ Niobium: 1.2%︎ Tungsten: 1.0%︎ Chromium: 8.0%︎ Zinc: 4.8%︎ Carbon: 17.4%︎ Iron: 17.8%︎ Nickel: 13.5%︎ Phosphorus: 11.1%︎ Sulphur: 20.6%︎ HIP 28711 B 3 b - Rocky body
Body distance152,625 LsEarth masses0.0504Radius2,546 kmGravity0.32 gSurface temperature172 K (-101°C/-149°F)Surface pressure0.18 atmVolcanismMajor Rocky magmaAtmosphereSulphur dioxideTerraforming︎ HIP 28711 B 2 - Class III gas giant
Body distance153,698 LsRing/belt typeMetal rich (Pristine)Earth masses2,579.8000Radius68,127 kmGravity22.59 gSurface temperature573 K (300°C/572°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 28711 B 2 a - Icy body Landable
Body distance153,699 LsEarth masses0.0139Radius1,989 kmGravity0.14 gSurface temperature124 K (-149°C/-237°F)Surface pressure0.00 atmVolcanismMajor Water geysersAtmosphereTerraforming︎ Yttrium: 0.9%︎ Molybdenum: 1.0%︎ Tungsten: 0.8%︎ Germanium: 4.2%︎ Vanadium: 3.6%︎ Zinc: 4.0%︎ Carbon: 21.1%︎ Iron: 14.7%︎ Nickel: 11.1%︎ Phosphorus: 13.5%︎ Sulphur: 25.1%︎ HIP 28711 B 2 b - Icy body Landable
Body distance153,700 LsEarth masses0.0394Radius2,788 kmGravity0.21 gSurface temperature108 K (-165°C/-264°F)Surface pressure0.00 atmVolcanismMajor Water geysersAtmosphereTerraforming︎ Ruthenium: 0.9%︎ Selenium: 3.8%︎ Molybdenum: 0.9%︎ Niobium: 1.0%︎ Manganese: 6.0%︎ Vanadium: 3.6%︎ Carbon: 20.6%︎ Iron: 14.5%︎ Nickel: 11.0%︎ Phosphorus: 13.2%︎ Sulphur: 24.5%︎ HIP 28711 B 1 - Class III gas giant
Body distance153,722 LsRing/belt typeIcy (Pristine)
Metal rich (Pristine)Earth masses1,359.5300Radius73,936 kmGravity10.11 gSurface temperature280 K (6°C/43°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HIP 28711 B 1 c - Icy body
Body distance153,721 LsEarth masses0.0201Radius2,371 kmGravity0.14 gSurface temperature240 K (-33°C/-27°F)Surface pressure105.26 atmVolcanismWater geysersAtmosphereThick Carbon dioxide-richTerraforming︎ HIP 28711 B 1 d - Icy body
Body distance153,722 LsEarth masses0.0165Radius2,221 kmGravity0.14 gSurface temperature216 K (-58°C/-72°F)Surface pressure88.03 atmVolcanismMinor Carbon dioxide geysersAtmosphereThick MethaneTerraforming︎ HIP 28711 B 1 e - Icy body Landable
Body distance153,723 LsEarth masses0.0150Radius2,155 kmGravity0.13 gSurface temperature58 K (-215°C/-355°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Selenium: 4.2%︎ Yttrium: 0.7%︎ Cadmium: 0.9%︎ Tungsten: 0.7%︎ Chromium: 5.4%︎ Zinc: 3.3%︎ Carbon: 22.5%︎ Iron: 12.0%︎ Nickel: 9.1%︎ Phosphorus: 14.4%︎ Sulphur: 26.8%︎ HIP 28711 B 1 b - Icy body Landable
Body distance153,723 LsEarth masses0.0264Radius2,591 kmGravity0.16 gSurface temperature81 K (-193°C/-315°F)Surface pressure0.00 atmVolcanismMajor Water geysersAtmosphereTerraforming︎ Selenium: 4.1%︎ Tellurium: 0.9%︎ Cadmium: 0.9%︎ Molybdenum: 0.8%︎ Chromium: 5.3%︎ Manganese: 4.9%︎ Carbon: 22.1%︎ Iron: 11.8%︎ Nickel: 8.9%︎ Phosphorus: 14.1%︎ Sulphur: 26.2%︎ HIP 28711 B 1 a - Icy body Landable
Body distance153,723 LsEarth masses0.0778Radius3,672 kmGravity0.23 gSurface temperature88 K (-185°C/-301°F)Surface pressure0.01 atmVolcanismMajor Water geysersAtmosphereThin ArgonTerraforming︎ Antimony: 0.8%︎ Cadmium: 1.0%︎ Niobium: 0.9%︎ Arsenic: 1.6%︎ Germanium: 3.6%︎ Manganese: 5.1%︎ Carbon: 23.1%︎ Iron: 12.4%︎ Nickel: 9.4%︎ Phosphorus: 14.8%︎ Sulphur: 27.4%