Star system
HR 8977
Economy
Terraforming / Military
Government
Communism
Allegiance
Independent
Star type
Class F star Scoopable
Coordinates
-123.81 / -57.72 / -40.44
Permit required
No
︎ HR 8977 - Class F star
Body distance-Solar masses1.6094Solar radius1.3138︎ HR 8977 2 - High metal content world
Body distance2,128 LsEarth masses1.8752Radius7,324 kmGravity1.42 gSurface temperature268 K (-5°C/23°F)Surface pressure1.95 atmVolcanismMinor Metallic magmaAtmosphereNitrogenTerraformingTerraforming︎ HR 8977 1 - Class IV gas giant
Body distance2,178 LsRing/belt typeMetal rich (Pristine)
Rocky (Pristine)Earth masses3,689.2600Radius64,977 kmGravity35.51 gSurface temperature1,037 K (764°C/1,406°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HR 8977 1 b - Rocky body Landable
Body distance2,175 LsEarth masses0.0035Radius1,060 kmGravity0.12 gSurface temperature291 K (18°C/65°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.2%︎ Molybdenum: 1.3%︎ Tin: 1.2%︎ Arsenic: 2.5%︎ Chromium: 8.7%︎ Germanium: 5.6%︎ Carbon: 16.1%︎ Iron: 19.4%︎ Nickel: 14.7%︎ Phosphorus: 10.3%︎ Sulphur: 19.1%︎ HR 8977 1 a - Rocky body Landable
Body distance2,178 LsEarth masses0.0027Radius974 kmGravity0.11 gSurface temperature330 K (57°C/135°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Tellurium: 1.4%︎ Mercury: 0.8%︎ Tin: 1.1%︎ Chromium: 8.3%︎ Manganese: 7.7%︎ Vanadium: 4.6%︎ Carbon: 15.4%︎ Iron: 18.6%︎ Nickel: 14.0%︎ Phosphorus: 9.9%︎ Sulphur: 18.3%︎ HR 8977 1 c - Rocky body Landable
Body distance2,178 LsEarth masses0.0025Radius957 kmGravity0.11 gSurface temperature276 K (3°C/37°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Antimony: 1.1%︎ Niobium: 1.3%︎ Tin: 1.1%︎ Chromium: 8.3%︎ Manganese: 7.6%︎ Vanadium: 4.5%︎ Carbon: 15.4%︎ Iron: 18.5%︎ Nickel: 14.0%︎ Phosphorus: 9.8%︎ Sulphur: 18.3%︎ HR 8977 1 d - Rocky body
Body distance2,181 LsEarth masses0.0030Radius1,017 kmGravity0.12 gSurface temperature520 K (247°C/477°F)Surface pressure0.49 atmVolcanismAtmosphereHot WaterTerraforming︎ HR 8977 4 - Class I gas giant
Body distance3,802 LsRing/belt typeMetal rich (Pristine)Earth masses56.5001Radius48,416 kmGravity0.98 gSurface temperature146 K (-127°C/-196°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HR 8977 4 b - Rocky body
Body distance3,803 LsEarth masses0.0031Radius1,028 kmGravity0.12 gSurface temperature279 K (6°C/43°F)Surface pressure2.82 atmVolcanismMinor Metallic magmaAtmosphereCarbon dioxideTerraforming︎ HR 8977 4 a - Rocky body
Body distance3,811 LsEarth masses0.0015Radius804 kmGravity0.09 gSurface temperature260 K (-13°C/9°F)Surface pressure1.70 atmVolcanismMetallic magmaAtmosphereCarbon dioxideTerraforming︎ HR 8977 3 - Class III gas giant
Body distance3,809 LsRing/belt typeMetal rich (Pristine)
Rocky (Pristine)Earth masses1,826.2700Radius73,144 kmGravity13.87 gSurface temperature488 K (214°C/418°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ HR 8977 3 c - Rocky body Landable
Body distance3,803 LsEarth masses0.0125Radius1,618 kmGravity0.19 gSurface temperature179 K (-94°C/-137°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Polonium: 0.5%︎ Cadmium: 1.5%︎ Tungsten: 1.1%︎ Manganese: 8.2%︎ Zinc: 5.4%︎ Zirconium: 2.3%︎ Carbon: 16.4%︎ Iron: 19.8%︎ Nickel: 14.9%︎ Phosphorus: 10.5%︎ Sulphur: 19.5%︎ HR 8977 3 b a - Rocky body Landable
Body distance3,803 LsEarth masses0.0005Radius564 kmGravity0.06 gSurface temperature191 K (-82°C/-116°F)Surface pressure0.00 atmVolcanismMajor Silicate vapour geysersAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Selenium: 3.4%︎ Molybdenum: 1.2%︎ Tungsten: 1.0%︎ Arsenic: 2.9%︎ Zinc: 5.2%︎ Carbon: 18.2%︎ Iron: 19.1%︎ Nickel: 14.4%︎ Phosphorus: 11.7%︎ Sulphur: 21.7%︎ HR 8977 3 b - Rocky body Landable
Body distance3,804 LsEarth masses0.0337Radius2,233 kmGravity0.27 gSurface temperature191 K (-82°C/-116°F)Surface pressure0.00 atmVolcanismAtmosphereTerraforming︎ Ruthenium: 1.1%︎ Niobium: 1.3%︎ Tungsten: 1.0%︎ Chromium: 8.3%︎ Manganese: 7.6%︎ Zinc: 5.0%︎ Carbon: 15.3%︎ Iron: 18.5%︎ Nickel: 14.0%︎ Phosphorus: 9.8%︎ Sulphur: 18.1%︎ HR 8977 3 a - Rocky body Landable
Body distance3,809 LsEarth masses0.0146Radius1,701 kmGravity0.20 gSurface temperature210 K (-63°C/-81°F)Surface pressure0.00 atmVolcanismMinor Metallic magmaAtmosphereTerraforming︎ Ruthenium: 1.2%︎ Cadmium: 1.5%︎ Molybdenum: 1.2%︎ Germanium: 5.5%︎ Manganese: 7.9%︎ Vanadium: 4.7%︎ Carbon: 15.8%︎ Iron: 19.0%︎ Nickel: 14.4%︎ Phosphorus: 10.1%︎ Sulphur: 18.8%