Star system

Ross 991︎

Economy
Military / Industrial
Government
Democracy
Allegiance
Alliance
Star type
Class M star Scoopable
Coordinates
-18.66 / 64.44 / -12.59
Permit required
No

  • ︎ Ross 991 A - Class M star

    Body distance
    -

    Solar masses
    0.3711
    Solar radius
    0.5520

    • ︎ Ross 991 A 2 - Icy body

      Body distance
      512 Ls

      Earth masses
      0.6498
      Radius
      6,832 km
      Gravity
      0.57 g
      Surface temperature
      106 K (-167°C/-269°F)
      Surface pressure
      3.14 atm
      Volcanism
      Atmosphere
      Methane-rich
      Terraforming

    • ︎ Ross 991 A 1 - Rocky ice world

      Body distance
      513 Ls

      Earth masses
      1.3983
      Radius
      7,791 km
      Gravity
      0.94 g
      Surface temperature
      67 K (-207°C/-340°F)
      Surface pressure
      0.29 atm
      Volcanism
      Rocky magma
      Atmosphere
      Helium
      Terraforming

    • ︎ Ross 991 A 3 - Icy body

      Body distance
      686 Ls

      Earth masses
      0.4729
      Radius
      6,197 km
      Gravity
      0.50 g
      Surface temperature
      79 K (-194°C/-317°F)
      Surface pressure
      796.46 atm
      Volcanism
      Atmosphere
      Thick Argon-rich
      Terraforming

    • ︎ Ross 991 A 4 - Icy body Landable

      Body distance
      895 Ls

      Earth masses
      0.5068
      Radius
      6,330 km
      Gravity
      0.51 g
      Surface temperature
      50 K (-223°C/-369°F)
      Surface pressure
      0.00 atm
      Volcanism
      Atmosphere
      Thin Neon
      Terraforming

      ︎ Technetium: 0.6%︎ Mercury: 0.7%︎ Molybdenum: 1.0%︎ Chromium: 7.0%︎ Germanium: 3.3%︎ Manganese: 6.4%︎ Carbon: 19.0%︎ Iron: 15.6%︎ Nickel: 11.8%︎ Phosphorus: 12.2%︎ Sulphur: 22.6%

    • ︎ Ross 991 A 5 - Icy body Landable

      Body distance
      1,156 Ls

      Earth masses
      0.4426
      Radius
      6,071 km
      Gravity
      0.49 g
      Surface temperature
      44 K (-229°C/-380°F)
      Surface pressure
      0.00 atm
      Volcanism
      Atmosphere
      Thin Neon
      Terraforming

      ︎ Ruthenium: 1.0%︎ Mercury: 0.7%︎ Molybdenum: 1.0%︎ Manganese: 6.5%︎ Vanadium: 3.9%︎ Zinc: 4.3%︎ Carbon: 19.3%︎ Iron: 15.8%︎ Nickel: 12.0%︎ Phosphorus: 12.4%︎ Sulphur: 23.0%

    • ︎ Ross 991 A 6 - Icy body

      Body distance
      2,110 Ls

      Earth masses
      0.6787
      Radius
      6,889 km
      Gravity
      0.58 g
      Surface temperature
      34 K (-239°C/-398°F)
      Surface pressure
      0.13 atm
      Volcanism
      Atmosphere
      Neon-rich
      Terraforming

      • ︎ Ross 991 A 6 a - Icy body Landable

        Body distance
        2,112 Ls

        Earth masses
        0.0538
        Radius
        3,303 km
        Gravity
        0.20 g
        Surface temperature
        34 K (-239°C/-399°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Selenium: 4.3%︎ Yttrium: 0.7%︎ Cadmium: 0.9%︎ Molybdenum: 0.8%︎ Germanium: 3.1%︎ Manganese: 4.9%︎ Carbon: 22.9%︎ Iron: 11.8%︎ Nickel: 8.9%︎ Phosphorus: 14.6%︎ Sulphur: 27.2%

    • ︎ Ross 991 A 7 - Icy body Landable

      Body distance
      2,894 Ls

      Earth masses
      0.4561
      Radius
      6,128 km
      Gravity
      0.49 g
      Surface temperature
      29 K (-244°C/-407°F)
      Surface pressure
      0.00 atm
      Volcanism
      Atmosphere
      Thin Neon
      Terraforming

      ︎ Tellurium: 0.8%︎ Cadmium: 1.2%︎ Molybdenum: 1.0%︎ Chromium: 6.9%︎ Manganese: 6.3%︎ Vanadium: 3.8%︎ Carbon: 18.7%︎ Iron: 15.3%︎ Nickel: 11.6%︎ Phosphorus: 12.0%︎ Sulphur: 22.3%

  • ︎ Ross 991 B - Class M star

    Body distance
    143,440 Ls

    Solar masses
    0.2305
    Solar radius
    0.3690

    • ︎ Ross 991 B 1 - Icy body

      Body distance
      143,446 Ls

      Earth masses
      14.1414
      Radius
      16,156 km
      Gravity
      2.20 g
      Surface temperature
      98 K (-175°C/-283°F)
      Surface pressure
      3.96 atm
      Volcanism
      Water geysers
      Atmosphere
      Helium
      Terraforming

    • ︎ Ross 991 B 3 - Class I gas giant

      Body distance
      144,391 Ls
      Ring/belt type
      Icy (Depleted)

      Earth masses
      242.3960
      Radius
      70,673 km
      Gravity
      1.97 g
      Surface temperature
      56 K (-217°C/-359°F)
      Surface pressure
      0.00 atm
      Volcanism
      Atmosphere
      Terraforming

      • ︎ Ross 991 B 3 g - Icy body Landable

        Body distance
        144,358 Ls

        Earth masses
        0.0045
        Radius
        1,451 km
        Gravity
        0.09 g
        Surface temperature
        27 K (-246°C/-411°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Tellurium: 0.9%︎ Cadmium: 1.0%︎ Molybdenum: 0.8%︎ Arsenic: 1.6%︎ Manganese: 5.1%︎ Vanadium: 3.0%︎ Carbon: 23.3%︎ Iron: 12.4%︎ Nickel: 9.4%︎ Phosphorus: 14.9%︎ Sulphur: 27.7%

      • ︎ Ross 991 B 3 a - Icy body Landable

        Body distance
        144,364 Ls

        Earth masses
        0.0009
        Radius
        859 km
        Gravity
        0.05 g
        Surface temperature
        32 K (-241°C/-402°F)
        Surface pressure
        0.00 atm
        Volcanism
        Major Water geysers
        Atmosphere
        Terraforming

        ︎ Yttrium: 0.7%︎ Molybdenum: 0.8%︎ Tin: 0.7%︎ Manganese: 5.0%︎ Vanadium: 3.0%︎ Zinc: 3.3%︎ Carbon: 23.0%︎ Iron: 12.2%︎ Nickel: 9.2%︎ Phosphorus: 14.7%︎ Sulphur: 27.3%

      • ︎ Ross 991 B 3 c - Icy body Landable

        Body distance
        144,364 Ls

        Earth masses
        0.0022
        Radius
        1,139 km
        Gravity
        0.07 g
        Surface temperature
        30 K (-244°C/-406°F)
        Surface pressure
        0.00 atm
        Volcanism
        Major Water geysers
        Atmosphere
        Terraforming

        ︎ Technetium: 0.4%︎ Cadmium: 0.9%︎ Molybdenum: 0.8%︎ Manganese: 5.0%︎ Vanadium: 3.0%︎ Zinc: 3.3%︎ Carbon: 23.0%︎ Iron: 12.2%︎ Nickel: 9.2%︎ Phosphorus: 14.7%︎ Sulphur: 27.3%

      • ︎ Ross 991 B 3 e - Icy body Landable

        Body distance
        144,370 Ls

        Earth masses
        0.0020
        Radius
        1,101 km
        Gravity
        0.07 g
        Surface temperature
        29 K (-245°C/-408°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Selenium: 4.2%︎ Tellurium: 0.9%︎ Mercury: 0.5%︎ Niobium: 0.8%︎ Chromium: 5.4%︎ Vanadium: 3.0%︎ Carbon: 22.6%︎ Iron: 12.0%︎ Nickel: 9.1%︎ Phosphorus: 14.5%︎ Sulphur: 26.9%

      • ︎ Ross 991 B 3 f - Icy body Landable

        Body distance
        144,385 Ls

        Earth masses
        0.0028
        Radius
        1,243 km
        Gravity
        0.07 g
        Surface temperature
        28 K (-246°C/-410°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Ruthenium: 0.8%︎ Selenium: 4.3%︎ Mercury: 0.5%︎ Tin: 0.7%︎ Germanium: 3.6%︎ Vanadium: 3.0%︎ Carbon: 23.1%︎ Iron: 12.3%︎ Nickel: 9.3%︎ Phosphorus: 14.8%︎ Sulphur: 27.5%

      • ︎ Ross 991 B 3 d - Icy body Landable

        Body distance
        144,392 Ls

        Earth masses
        0.0020
        Radius
        1,111 km
        Gravity
        0.07 g
        Surface temperature
        30 K (-244°C/-406°F)
        Surface pressure
        0.00 atm
        Volcanism
        Major Water geysers
        Atmosphere
        Terraforming

        ︎ Ruthenium: 0.7%︎ Cadmium: 0.9%︎ Tungsten: 0.7%︎ Chromium: 5.3%︎ Manganese: 4.9%︎ Zinc: 3.2%︎ Carbon: 22.4%︎ Iron: 11.9%︎ Nickel: 9.0%︎ Phosphorus: 14.3%︎ Sulphur: 26.6%

      • ︎ Ross 991 B 3 b - Icy body Landable

        Body distance
        144,393 Ls

        Earth masses
        0.0010
        Radius
        872 km
        Gravity
        0.05 g
        Surface temperature
        31 K (-242°C/-404°F)
        Surface pressure
        0.00 atm
        Volcanism
        Water geysers
        Atmosphere
        Terraforming

        ︎ Antimony: 0.7%︎ Selenium: 4.2%︎ Mercury: 0.5%︎ Molybdenum: 0.8%︎ Manganese: 5.0%︎ Zinc: 3.3%︎ Carbon: 22.7%︎ Iron: 12.1%︎ Nickel: 9.1%︎ Phosphorus: 14.5%︎ Sulphur: 27.0%

    • ︎ Ross 991 B 2 - Class I gas giant

      Body distance
      144,465 Ls
      Ring/belt type
      Icy (Depleted)
      Rocky (Depleted)

      Earth masses
      177.9690
      Radius
      67,577 km
      Gravity
      1.58 g
      Surface temperature
      50 K (-223°C/-369°F)
      Surface pressure
      0.00 atm
      Volcanism
      Atmosphere
      Terraforming

      • ︎ Ross 991 B 2 b - Icy body Landable

        Body distance
        144,493 Ls

        Earth masses
        0.0040
        Radius
        1,399 km
        Gravity
        0.08 g
        Surface temperature
        32 K (-241°C/-401°F)
        Surface pressure
        0.00 atm
        Volcanism
        Major Water geysers
        Atmosphere
        Terraforming

        ︎ Tellurium: 0.9%︎ Cadmium: 0.9%︎ Niobium: 0.8%︎ Chromium: 5.4%︎ Vanadium: 3.0%︎ Zinc: 3.3%︎ Carbon: 22.8%︎ Iron: 12.1%︎ Nickel: 9.1%︎ Phosphorus: 14.6%︎ Sulphur: 27.1%

      • ︎ Ross 991 B 2 a - Icy body Landable

        Body distance
        144,493 Ls

        Earth masses
        0.0036
        Radius
        1,354 km
        Gravity
        0.08 g
        Surface temperature
        34 K (-239°C/-398°F)
        Surface pressure
        0.00 atm
        Volcanism
        Major Water geysers
        Atmosphere
        Terraforming

        ︎ Ruthenium: 0.7%︎ Selenium: 4.2%︎ Tin: 0.7%︎ Tungsten: 0.7%︎ Germanium: 3.5%︎ Manganese: 5.0%︎ Carbon: 22.6%︎ Iron: 12.0%︎ Nickel: 9.1%︎ Phosphorus: 14.5%︎ Sulphur: 26.9%

    • ︎ Ross 991 B 4 - Class I gas giant

      Body distance
      144,537 Ls
      Ring/belt type
      Icy (Depleted)
      Metal rich (Depleted)

      Earth masses
      38.6419
      Radius
      47,161 km
      Gravity
      0.71 g
      Surface temperature
      26 K (-247°C/-412°F)
      Surface pressure
      0.00 atm
      Volcanism
      Atmosphere
      Terraforming

      • ︎ Ross 991 B 4 c - Icy body Landable

        Body distance
        144,555 Ls

        Earth masses
        0.0018
        Radius
        1,066 km
        Gravity
        0.06 g
        Surface temperature
        21 K (-252°C/-421°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Yttrium: 0.7%︎ Niobium: 0.8%︎ Tin: 0.7%︎ Chromium: 5.5%︎ Manganese: 5.1%︎ Zirconium: 1.4%︎ Carbon: 22.7%︎ Iron: 12.2%︎ Nickel: 9.3%︎ Phosphorus: 14.5%︎ Sulphur: 27.0%

      • ︎ Ross 991 B 4 b - Icy body Landable

        Body distance
        144,559 Ls

        Earth masses
        0.0004
        Radius
        639 km
        Gravity
        0.04 g
        Surface temperature
        22 K (-252°C/-421°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Ruthenium: 0.7%︎ Selenium: 4.2%︎ Molybdenum: 0.8%︎ Niobium: 0.8%︎ Germanium: 3.5%︎ Manganese: 5.0%︎ Carbon: 22.6%︎ Iron: 12.0%︎ Nickel: 9.1%︎ Phosphorus: 14.5%︎ Sulphur: 26.9%

      • ︎ Ross 991 B 4 a - Icy body Landable

        Body distance
        144,559 Ls

        Earth masses
        0.0008
        Radius
        822 km
        Gravity
        0.05 g
        Surface temperature
        22 K (-251°C/-420°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Ruthenium: 0.8%︎ Niobium: 0.8%︎ Tungsten: 0.7%︎ Manganese: 5.0%︎ Vanadium: 3.0%︎ Zinc: 3.3%︎ Carbon: 23.0%︎ Iron: 12.2%︎ Nickel: 9.2%︎ Phosphorus: 14.7%︎ Sulphur: 27.3%

    • ︎ Ross 991 B 5 - Class I gas giant

      Body distance
      148,848 Ls
      Ring/belt type
      Icy (Depleted)

      Earth masses
      42.8019
      Radius
      46,701 km
      Gravity
      0.80 g
      Surface temperature
      24 K (-249°C/-416°F)
      Surface pressure
      0.00 atm
      Volcanism
      Atmosphere
      Terraforming

      • ︎ Ross 991 B 5 e - Icy body Landable

        Body distance
        148,837 Ls

        Earth masses
        0.0006
        Radius
        725 km
        Gravity
        0.04 g
        Surface temperature
        20 K (-253°C/-424°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Selenium: 4.3%︎ Technetium: 0.4%︎ Tin: 0.7%︎ Tungsten: 0.7%︎ Germanium: 3.6%︎ Vanadium: 3.0%︎ Carbon: 23.2%︎ Iron: 12.3%︎ Nickel: 9.3%︎ Phosphorus: 14.8%︎ Sulphur: 27.6%

      • ︎ Ross 991 B 5 a - Icy body Landable

        Body distance
        148,840 Ls

        Earth masses
        0.0003
        Radius
        600 km
        Gravity
        0.04 g
        Surface temperature
        20 K (-253°C/-424°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Selenium: 4.3%︎ Technetium: 0.4%︎ Molybdenum: 0.8%︎ Niobium: 0.8%︎ Chromium: 5.6%︎ Zirconium: 1.4%︎ Carbon: 22.9%︎ Iron: 12.4%︎ Nickel: 9.3%︎ Phosphorus: 14.7%︎ Sulphur: 27.3%

      • ︎ Ross 991 B 5 f - Icy body Landable

        Body distance
        148,841 Ls

        Earth masses
        0.0015
        Radius
        1,015 km
        Gravity
        0.06 g
        Surface temperature
        20 K (-253°C/-424°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Ruthenium: 0.8%︎ Selenium: 4.4%︎ Cadmium: 1.0%︎ Tin: 0.8%︎ Vanadium: 3.1%︎ Zirconium: 1.5%︎ Carbon: 23.5%︎ Iron: 12.6%︎ Nickel: 9.5%︎ Phosphorus: 15.0%︎ Sulphur: 27.9%

      • ︎ Ross 991 B 5 c - Icy body Landable

        Body distance
        148,846 Ls

        Earth masses
        0.0002
        Radius
        542 km
        Gravity
        0.03 g
        Surface temperature
        20 K (-253°C/-424°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Yttrium: 0.7%︎ Cadmium: 1.0%︎ Mercury: 0.5%︎ Arsenic: 1.6%︎ Chromium: 5.5%︎ Zinc: 3.4%︎ Carbon: 23.2%︎ Iron: 12.3%︎ Nickel: 9.3%︎ Phosphorus: 14.8%︎ Sulphur: 27.6%

      • ︎ Ross 991 B 5 d - Icy body Landable

        Body distance
        148,846 Ls

        Earth masses
        0.0015
        Radius
        1,009 km
        Gravity
        0.06 g
        Surface temperature
        20 K (-253°C/-424°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Yttrium: 0.7%︎ Cadmium: 0.9%︎ Mercury: 0.5%︎ Germanium: 3.5%︎ Manganese: 5.0%︎ Zinc: 3.3%︎ Carbon: 22.8%︎ Iron: 12.1%︎ Nickel: 9.2%︎ Phosphorus: 14.6%︎ Sulphur: 27.2%

      • ︎ Ross 991 B 5 b - Icy body Landable

        Body distance
        148,857 Ls

        Earth masses
        0.0002
        Radius
        526 km
        Gravity
        0.03 g
        Surface temperature
        20 K (-253°C/-424°F)
        Surface pressure
        0.00 atm
        Volcanism
        Atmosphere
        Terraforming

        ︎ Yttrium: 0.7%︎ Cadmium: 0.9%︎ Niobium: 0.8%︎ Chromium: 5.3%︎ Manganese: 4.9%︎ Zinc: 3.2%︎ Carbon: 22.3%︎ Iron: 11.9%︎ Nickel: 9.0%︎ Phosphorus: 14.3%︎ Sulphur: 26.6%