🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.5 AU - 0.62 AU

Year: 271 Days

Day: 36.5 Hours

Environment

Temp: -117 °C

Axial Tilt: 18 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 320.1

Radius: 11.4

Gravity: 2.46 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.63 AU - 1.03 AU

Year: 488 Days

Day: 8.3 Hours

Environment

Temp: -153 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 73,938,805 km

• M1: 141,819 km (0.098 R)
• M2: 504,594 km (0.033 R)
• M3: 880,982 km (0.057 R)
• M4: 1,479,673 km (0.033 R)
• M5: 2,186,373 km (0.102 R)
• M6: 2,871,980 km (0.057 R)
• M7: 3,375,526 km (0.114 R)
• M8: 3,851,696 km (0.105 R)
• M9: 4,346,117 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.3

Radius: 11.2

Gravity: 6.5 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.9 AU - 1.14 AU

Year: 665 Days

Day: 7.7 Hours

Environment

Temp: -165 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 73,938,805 km

• M1: 139,276 km (0.103 R)
• M2: 528,230 km (0.101 R)
• M3: 896,540 km (0.105 R)
• M4: 1,587,084 km (0.048 R)
• M5: 1,955,095 km (0.046 R)
• M6: 2,774,891 km (0.101 R)
• M7: 3,149,185 km (0.11 R)
• M8: 3,839,130 km (0.062 R)
• M9: 4,212,826 km (0.065 R)
• M10: 4,677,028 km (0.1 R)
• M11: 5,538,861 km (0.055 R)
• M12: 6,116,907 km (0.103 R)
• M13: 6,820,317 km (0.098 R)
• M14: 7,236,348 km (0.053 R)
• M15: 7,762,783 km (0.081 R)
• M16: 8,265,582 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 518.8

Radius: 14

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 1.35 AU - 1.61 AU

Year: 1163 Days

Day: 14.3 Hours

Environment

Temp: -173 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 73,938,805 km

• M1: 174,132 km (0.06 R)
• M2: 713,731 km (0.109 R)
• M3: 1,209,648 km (0.107 R)
• M4: 1,794,426 km (0.117 R)
• M5: 2,781,922 km (0.08 R)
• M6: 3,463,340 km (0.08 R)
• M7: 4,025,529 km (0.119 R)
• M8: 4,791,470 km (0.097 R)
• M9: 7,486,027 km (0.088 R)
• M10: 8,700,911 km (0.03 R)
• M11: 9,427,359 km (0.116 R)
• M12: 9,924,024 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 322.7

Radius: 8.3

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 1.66 AU - 2.72 AU

Year: 2093 Days

Day: 5.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 73,938,805 km

• M1: 108,458 km (0.098 R)
• M2: 530,624 km (0.032 R)
• M3: 796,609 km (0.035 R)
• M4: 1,926,521 km (0.115 R)
• M5: 3,166,688 km (0.084 R)
• M6: 5,345,730 km (0.103 R)
• M7: 7,696,511 km (0.047 R)
• M8: 8,341,428 km (0.103 R)
• M9: 8,870,855 km (0.112 R)
• M10: 12,796,901 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 11.2

Radius: 10

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 2.8 AU - 3.18 AU

Year: 3338 Days

Day: 8.3 Hours

Environment

Temp: -207 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 73,938,805 km

• M1: 124,765 km (0.099 R)
• M2: 1,489,995 km (0.107 R)
• M3: 3,377,172 km (0.095 R)
• M4: 3,936,818 km (0.048 R)
• M5: 5,052,818 km (0.107 R)
• M6: 5,402,727 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 372.8

Radius: 10

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 5.52 AU - 5.54 AU

Year: 8397 Days

Day: 8.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 73,938,805 km

• M1: 124,465 km (0.077 R)
• M2: 660,175 km (0.12 R)
• M3: 1,549,535 km (0.099 R)
• M4: 2,769,805 km (0.051 R)
• M5: 3,121,360 km (0.058 R)
• M6: 3,502,535 km (0.093 R)
• M7: 4,436,624 km (0.111 R)
• M8: 7,848,054 km (0.096 R)
• M9: 9,265,195 km (0.08 R)
• M10: 9,922,079 km (0.088 R)
• M11: 10,516,132 km (0.088 R)
• M12: 12,441,457 km (0.104 R)
• M13: 13,460,068 km (0.068 R)
• M14: 14,649,371 km (0.078 R)
• M15: 20,475,461 km (0.109 R)
• M16: 23,057,520 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 465.2

Radius: 6.9

Gravity: 9.77 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 6.29 AU - 7.23 AU

Year: 11348 Days

Day: 19.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 73,938,805 km

• M1: 91,255 km (0.114 R)
• M2: 318,643 km (0.097 R)
• M3: 600,037 km (0.08 R)
• M4: 1,201,720 km (0.083 R)
• M5: 1,821,354 km (0.112 R)
• M6: 2,820,817 km (0.032 R)
• M7: 4,539,248 km (0.103 R)
• M8: 5,114,302 km (0.094 R)
• M9: 5,501,761 km (0.108 R)
• M10: 6,048,541 km (0.051 R)
• M11: 6,519,176 km (0.047 R)
• M12: 6,820,616 km (0.097 R)
• M13: 7,210,617 km (0.092 R)
• M14: 7,781,483 km (0.077 R)
• M15: 10,268,099 km (0.103 R)
• M16: 10,780,471 km (0.094 R)
• M17: 12,363,217 km (0.069 R)
• M18: 12,650,894 km (0.106 R)
• M19: 14,032,579 km (0.076 R)
• M20: 16,254,856 km (0.051 R)
• M21: 16,950,636 km (0.12 R)
• M22: 18,178,984 km (0.118 R)
• M23: 22,388,219 km (0.074 R)
• M24: 29,086,314 km (0.038 R)
• M25: 31,800,169 km (0.077 R)
• M26: 32,667,986 km (0.056 R)
• M27: 37,966,892 km (0.079 R)
• M28: 38,943,467 km (0.075 R)
• M29: 40,819,275 km (0.105 R)
• M30: 41,073,891 km (0.077 R)
• M31: 44,750,258 km (0.065 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 518

Radius: 6.2

Gravity: 13.48 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 9.26 AU - 11.78 AU

Year: 22031 Days

Day: 20.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 73,938,805 km

• M1: 77,791 km (0.064 R)
• M2: 1,451,698 km (0.054 R)
• M3: 1,751,193 km (0.069 R)
• M4: 2,566,052 km (0.097 R)
• M5: 3,031,750 km (0.112 R)
• M6: 4,325,024 km (0.026 R)
• M7: 5,949,657 km (0.093 R)
• M8: 6,368,980 km (0.067 R)
• M9: 9,703,067 km (0.114 R)
• M10: 10,165,923 km (0.097 R)
• M11: 10,765,063 km (0.039 R)
• M12: 12,298,890 km (0.117 R)
• M13: 14,339,853 km (0.082 R)
• M14: 15,793,047 km (0.049 R)
• M15: 20,928,293 km (0.086 R)
• M16: 25,411,742 km (0.104 R)
• M17: 26,179,328 km (0.11 R)
• M18: 27,760,877 km (0.046 R)
• M19: 28,928,787 km (0.112 R)
• M20: 31,864,945 km (0.101 R)
• M21: 42,157,727 km (0.089 R)
• M22: 57,031,495 km (0.086 R)
• M23: 57,592,338 km (0.037 R)
• M24: 70,879,770 km (0.081 R)
• M25: 72,180,225 km (0.112 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 516 - 14,217 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit