🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.18

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.42 AU - 0.68 AU

Year: 263 Days

Day: 17 Hours

Environment

Temp: -112 °C

Axial Tilt: 32.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 27,038,356 km

• M1: 47,423 km (0.084 R)
• M2: 165,455 km (0.065 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.7

Radius: 13.3

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.79 AU - 0.83 AU

Year: 471 Days

Day: 5.1 Hours

Environment

Temp: -146 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 27,038,356 km

• M1: 165,904 km (0.054 R)
• M2: 599,738 km (0.102 R)
• M3: 1,078,301 km (0.115 R)
• M4: 1,530,985 km (0.054 R)
• M5: 2,070,285 km (0.115 R)
• M6: 2,505,615 km (0.045 R)
• M7: 3,615,481 km (0.099 R)
• M8: 4,483,299 km (0.116 R)
• M9: 4,967,248 km (0.026 R)
• M10: 5,880,842 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 962.7

Radius: 14.4

Gravity: 4.64 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.83 AU - 1.05 AU

Year: 588 Days

Day: 13.2 Hours

Environment

Temp: -149 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 27,038,356 km

• M1: 179,069 km (0.077 R)
• M2: 907,760 km (0.09 R)
• M3: 1,409,212 km (0.115 R)
• M4: 2,350,631 km (0.118 R)
• M5: 2,857,319 km (0.098 R)
• M6: 3,570,752 km (0.039 R)
• M7: 4,575,002 km (0.088 R)
• M8: 5,023,197 km (0.103 R)
• M9: 6,106,286 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 234.5

Radius: 12.8

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 2.39 AU - 2.51 AU

Year: 2476 Days

Day: 5.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 27,038,356 km

• M1: 159,172 km (0.105 R)
• M2: 709,692 km (0.087 R)
• M3: 1,287,140 km (0.112 R)
• M4: 1,861,596 km (0.114 R)
• M5: 2,966,675 km (0.061 R)
• M6: 4,123,217 km (0.119 R)
• M7: 4,736,418 km (0.115 R)
• M8: 5,261,656 km (0.101 R)
• M9: 5,803,350 km (0.097 R)
• M10: 6,263,214 km (0.116 R)
• M11: 6,822,261 km (0.099 R)
• M12: 7,601,367 km (0.075 R)
• M13: 8,181,358 km (0.056 R)
• M14: 8,731,429 km (0.09 R)
• M15: 9,618,545 km (0.073 R)
• M16: 10,198,835 km (0.035 R)
• M17: 11,429,726 km (0.101 R)
• M18: 12,266,427 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75.5

Radius: 12.5

Gravity: 0.48 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 2.45 AU - 2.73 AU

Year: 2691 Days

Day: 8.4 Hours

Environment

Temp: -203 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 27,038,356 km

• M1: 155,582 km (0.109 R)
• M2: 569,968 km (0.086 R)
• M3: 1,495,979 km (0.07 R)
• M4: 2,284,060 km (0.116 R)
• M5: 3,041,026 km (0.042 R)
• M6: 5,642,233 km (0.078 R)
• M7: 6,447,519 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24.8

Radius: 8.1

Gravity: 0.38 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 3.42 AU - 4.66 AU

Year: 5243 Days

Day: 10.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 27,038,356 km

• M1: 102,325 km (0.12 R)
• M2: 401,969 km (0.092 R)
• M3: 1,463,067 km (0.101 R)
• M4: 1,735,335 km (0.103 R)
• M5: 3,483,985 km (0.088 R)
• M6: 4,653,691 km (0.053 R)
• M7: 5,750,692 km (0.111 R)
• M8: 6,482,076 km (0.094 R)
• M9: 9,077,300 km (0.072 R)
• M10: 9,418,832 km (0.07 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 104.6

Radius: 13.2

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 4.87 AU - 4.89 AU

Year: 6961 Days

Day: 10.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 27,038,356 km

• M1: 164,258 km (0.048 R)
• M2: 842,984 km (0.118 R)
• M3: 1,600,996 km (0.12 R)
• M4: 2,262,817 km (0.108 R)
• M5: 2,938,102 km (0.054 R)
• M6: 4,038,095 km (0.063 R)
• M7: 5,980,624 km (0.106 R)
• M8: 6,806,404 km (0.072 R)
• M9: 8,617,735 km (0.058 R)
• M10: 10,079,157 km (0.086 R)
• M11: 11,128,286 km (0.115 R)
• M12: 11,951,224 km (0.108 R)
• M13: 15,154,563 km (0.112 R)
• M14: 16,114,234 km (0.057 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 149.6

Radius: 14.5

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 4.98 AU - 6.66 AU

Year: 9066 Days

Day: 5.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 27,038,356 km

• M1: 180,565 km (0.108 R)
• M2: 883,974 km (0.119 R)
• M3: 1,725,013 km (0.066 R)
• M4: 2,391,023 km (0.094 R)
• M5: 3,263,328 km (0.109 R)
• M6: 3,870,247 km (0.118 R)
• M7: 6,276,528 km (0.109 R)
• M8: 7,353,783 km (0.111 R)
• M9: 10,714,648 km (0.034 R)
• M10: 11,375,572 km (0.116 R)
• M11: 12,441,905 km (0.079 R)
• M12: 16,327,710 km (0.1 R)
• M13: 20,890,445 km (0.106 R)
• M14: 24,997,355 km (0.057 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: 324 - 10,528 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit