🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.53 AU - 0.68 AU

Year: 296 Days

Day: 20.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 43.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 265.8

Radius: 14.8

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.67 AU - 0.91 AU

Year: 446 Days

Day: 9.7 Hours

Environment

Temp: -145 °C

Axial Tilt: 46.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 21,791,810 km

• M1: 184,005 km (0.081 R)
• M2: 727,046 km (0.117 R)
• M3: 1,198,578 km (0.117 R)
• M4: 1,673,851 km (0.111 R)
• M5: 2,457,893 km (0.083 R)
• M6: 3,319,278 km (0.113 R)
• M7: 4,336,992 km (0.064 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 802.5

Radius: 9.5

Gravity: 8.89 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 1.05 AU - 1.39 AU

Year: 857 Days

Day: 7.1 Hours

Environment

Temp: -176 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 21,791,810 km

• M1: 118,182 km (0.119 R)
• M2: 439,070 km (0.085 R)
• M3: 781,948 km (0.06 R)
• M4: 1,171,202 km (0.054 R)
• M5: 1,530,087 km (0.053 R)
• M6: 2,894,868 km (0.073 R)
• M7: 3,319,278 km (0.102 R)
• M8: 4,938,226 km (0.1 R)
• M9: 5,685,916 km (0.114 R)
• M10: 7,381,458 km (0.116 R)
• M11: 7,722,691 km (0.119 R)
• M12: 8,099,827 km (0.087 R)
• M13: 8,675,330 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144

Radius: 10.9

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 1.61 AU - 1.87 AU

Year: 1459 Days

Day: 12.2 Hours

Environment

Temp: -178 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 21,791,810 km

• M1: 139,126 km (0.108 R)
• M2: 491,878 km (0.108 R)
• M3: 2,004,013 km (0.105 R)
• M4: 2,664,188 km (0.081 R)
• M5: 3,256,446 km (0.116 R)
• M6: 4,623,472 km (0.074 R)
• M7: 5,005,545 km (0.103 R)
• M8: 6,919,500 km (0.112 R)
• M9: 7,669,434 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 256.4

Radius: 13.7

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 3.61 AU - 4.31 AU

Year: 5010 Days

Day: 12.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 21,791,810 km

• M1: 170,392 km (0.107 R)
• M2: 708,645 km (0.05 R)
• M3: 1,137,692 km (0.089 R)
• M4: 2,561,564 km (0.118 R)
• M5: 4,476,866 km (0.089 R)
• M6: 6,998,936 km (0.115 R)
• M7: 7,908,940 km (0.081 R)
• M8: 9,146,713 km (0.11 R)
• M9: 10,352,173 km (0.068 R)
• M10: 11,323,811 km (0.041 R)
• M11: 15,208,269 km (0.055 R)
• M12: 18,071,572 km (0.112 R)
• M13: 19,660,601 km (0.116 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 427 - 20,086 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit