🌌 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: 0.36

Radius: 0.66

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.42 AU - 0.7 AU

Year: 275 Days

Day: 14.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 3.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.56 AU - 0.64 AU

Year: 305 Days

Day: 20.7 Hours

Environment

Temp: -131 °C

Axial Tilt: 39.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.66

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.54 AU - 0.7 AU

Year: 320 Days

Day: 29.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 23.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 37,883,857 km

• M1: 129,701 km (0.074 R)
• M2: 882,328 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 944.4

Radius: 10.2

Gravity: 9.08 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.56 AU - 0.93 AU

Year: 418 Days

Day: 14.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 37,883,857 km

• M1: 126,859 km (0.088 R)
• M2: 469,588 km (0.112 R)
• M3: 814,261 km (0.09 R)
• M4: 1,134,550 km (0.091 R)
• M5: 1,784,703 km (0.089 R)
• M6: 2,150,021 km (0.046 R)
• M7: 2,515,638 km (0.058 R)
• M8: 3,385,998 km (0.085 R)
• M9: 3,726,034 km (0.051 R)
• M10: 4,158,522 km (0.073 R)
• M11: 4,504,691 km (0.093 R)
• M12: 5,889,519 km (0.099 R)
• M13: 6,215,941 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 609.6

Radius: 10.6

Gravity: 5.43 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.58 AU - 0.94 AU

Year: 435 Days

Day: 10.5 Hours

Environment

Temp: -148 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,883,857 km

• M1: 131,796 km (0.112 R)
• M2: 472,430 km (0.039 R)
• M3: 857,495 km (0.105 R)
• M4: 1,190,350 km (0.056 R)
• M5: 1,632,861 km (0.104 R)
• M6: 2,184,129 km (0.032 R)
• M7: 2,528,054 km (0.088 R)
• M8: 3,373,282 km (0.108 R)
• M9: 3,887,450 km (0.1 R)
• M10: 4,935,683 km (0.099 R)
• M11: 5,436,536 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.3

Radius: 11.5

Gravity: 6.62 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.85 AU - 0.93 AU

Year: 551 Days

Day: 11 Hours

Environment

Temp: -157 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 37,883,857 km

• M1: 143,016 km (0.08 R)
• M2: 587,920 km (0.114 R)
• M3: 1,140,235 km (0.12 R)
• M4: 1,637,049 km (0.072 R)
• M5: 2,088,536 km (0.047 R)
• M6: 2,622,750 km (0.068 R)
• M7: 2,993,005 km (0.099 R)
• M8: 3,372,834 km (0.11 R)
• M9: 3,784,976 km (0.09 R)
• M10: 4,366,762 km (0.084 R)
• M11: 5,280,655 km (0.081 R)
• M12: 6,989,512 km (0.063 R)
• M13: 7,507,719 km (0.085 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 574.3

Radius: 12.1

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 1.04 AU - 1.26 AU

Year: 809 Days

Day: 11.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 37,883,857 km

• M1: 151,094 km (0.087 R)
• M2: 534,663 km (0.051 R)
• M3: 912,248 km (0.104 R)
• M4: 1,414,897 km (0.094 R)
• M5: 1,812,977 km (0.104 R)
• M6: 2,462,680 km (0.107 R)
• M7: 2,962,337 km (0.073 R)
• M8: 3,354,433 km (0.109 R)
• M9: 3,781,385 km (0.058 R)
• M10: 4,950,343 km (0.045 R)
• M11: 5,487,699 km (0.112 R)
• M12: 6,981,882 km (0.086 R)
• M13: 7,729,273 km (0.072 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 631.9

Radius: 13.2

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1.43 AU - 1.65 AU

Year: 1254 Days

Day: 7.6 Hours

Environment

Temp: -187 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 37,883,857 km

• M1: 164,109 km (0.058 R)
• M2: 601,234 km (0.058 R)
• M3: 1,036,414 km (0.101 R)
• M4: 1,812,677 km (0.088 R)
• M5: 2,805,708 km (0.067 R)
• M6: 3,803,675 km (0.051 R)
• M7: 4,306,175 km (0.098 R)
• M8: 5,006,442 km (0.067 R)
• M9: 5,632,958 km (0.11 R)
• M10: 7,341,665 km (0.083 R)
• M11: 8,124,960 km (0.063 R)
• M12: 10,075,716 km (0.04 R)
• M13: 10,584,498 km (0.081 R)
• M14: 11,379,760 km (0.101 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 419.9

Radius: 12.4

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 5.25 AU - 6.19 AU

Year: 8974 Days

Day: 12.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 37,883,857 km

• M1: 222,751 km (0.116 R)
• M2: 650,152 km (0.117 R)
• M3: 1,162,824 km (0.083 R)
• M4: 1,690,157 km (0.076 R)
• M5: 2,096,465 km (0.112 R)
• M6: 2,949,472 km (0.094 R)
• M7: 3,826,714 km (0.112 R)
• M8: 4,300,789 km (0.097 R)
• M9: 4,842,184 km (0.117 R)
• M10: 8,802,638 km (0.086 R)
• M11: 10,563,554 km (0.107 R)
• M12: 12,228,280 km (0.043 R)
• M13: 13,095,498 km (0.092 R)
• M14: 13,487,594 km (0.118 R)
• M15: 14,354,364 km (0.101 R)
• M16: 14,831,731 km (0.114 R)
• M17: 18,969,160 km (0.061 R)
• M18: 20,131,086 km (0.069 R)
• M19: 22,119,691 km (0.119 R)
• M20: 24,320,126 km (0.115 R)
• M21: 28,774,103 km (0.081 R)
• M22: 37,208,730 km (0.11 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 266 - 17,796 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit