🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.05

Radius: 1.02

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.56 AU - 0.62 AU

Year: 288 Days

Day: 29.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 18.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 22,835,610 km

• M1: 31,416 km (0.109 R)
• M2: 111,750 km (0.091 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.36

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.63 AU - 0.67 AU

Year: 333 Days

Day: 25.1 Hours

Environment

Temp: -127 °C

Axial Tilt: 47.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 22,835,610 km

• M1: 430,692 km (0.052 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.9

Radius: 12.7

Gravity: 5.62 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.83 AU - 1.13 AU

Year: 617 Days

Day: 8.5 Hours

Environment

Temp: -148 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 22,835,610 km

• M1: 157,975 km (0.061 R)
• M2: 650,601 km (0.079 R)
• M3: 1,207,853 km (0.034 R)
• M4: 1,610,870 km (0.098 R)
• M5: 2,269,699 km (0.063 R)
• M6: 2,792,843 km (0.108 R)
• M7: 3,330,647 km (0.031 R)
• M8: 3,821,328 km (0.105 R)
• M9: 6,089,531 km (0.071 R)
• M10: 6,849,039 km (0.104 R)
• M11: 7,307,557 km (0.032 R)
• M12: 7,763,232 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 951.7

Radius: 9.9

Gravity: 9.71 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.24 AU - 1.34 AU

Year: 932 Days

Day: 9.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 22,835,610 km

• M1: 123,119 km (0.106 R)
• M2: 581,188 km (0.086 R)
• M3: 981,212 km (0.083 R)
• M4: 1,355,357 km (0.104 R)
• M5: 1,750,295 km (0.052 R)
• M6: 2,688,274 km (0.074 R)
• M7: 3,450,774 km (0.085 R)
• M8: 3,803,227 km (0.117 R)
• M9: 4,179,615 km (0.119 R)
• M10: 4,598,938 km (0.085 R)
• M11: 4,931,793 km (0.066 R)
• M12: 7,108,442 km (0.116 R)
• M13: 7,428,881 km (0.064 R)
• M14: 8,125,558 km (0.113 R)
• M15: 8,949,842 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.7

Radius: 12.6

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 2.61 AU - 4.21 AU

Year: 4004 Days

Day: 5.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 22,835,610 km

• M1: 166,502 km (0.112 R)
• M2: 853,157 km (0.111 R)
• M3: 1,592,469 km (0.039 R)
• M4: 2,128,927 km (0.115 R)
• M5: 2,755,892 km (0.119 R)
• M6: 3,403,052 km (0.092 R)
• M7: 4,149,546 km (0.092 R)
• M8: 5,425,316 km (0.057 R)
• M9: 6,419,993 km (0.093 R)
• M10: 8,929,198 km (0.057 R)
• M11: 12,150,638 km (0.113 R)
• M12: 13,977,976 km (0.096 R)
• M13: 14,957,394 km (0.09 R)
• M14: 15,510,606 km (0.054 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 457.6

Radius: 11.4

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 3.2 AU - 3.7 AU

Year: 4074 Days

Day: 5.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 22,835,610 km

• M1: 144,212 km (0.072 R)
• M2: 891,753 km (0.035 R)
• M3: 1,368,073 km (0.059 R)
• M4: 2,241,275 km (0.103 R)
• M5: 3,177,758 km (0.089 R)
• M6: 3,666,195 km (0.112 R)
• M7: 5,491,588 km (0.117 R)
• M8: 6,340,556 km (0.068 R)
• M9: 7,149,432 km (0.06 R)
• M10: 7,562,771 km (0.042 R)
• M11: 8,025,776 km (0.088 R)
• M12: 10,428,468 km (0.096 R)
• M13: 13,323,186 km (0.099 R)
• M14: 13,804,144 km (0.104 R)
• M15: 14,497,081 km (0.086 R)
• M16: 15,213,056 km (0.114 R)
• M17: 16,494,960 km (0.118 R)
• M18: 21,748,987 km (0.08 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 22.2

Radius: 6.1

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 8.51 AU - 10.25 AU

Year: 18266 Days

Day: 16.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 22,835,610 km

• M1: 75,846 km (0.067 R)
• M2: 335,099 km (0.111 R)
• M3: 2,122,345 km (0.065 R)
• M4: 4,268,626 km (0.107 R)
• M5: 4,918,628 km (0.086 R)
• M6: 12,995,717 km (0.083 R)
• M7: 13,469,493 km (0.109 R)
• M8: 14,251,441 km (0.079 R)
• M9: 17,340,338 km (0.114 R)
• M10: 20,783,931 km (0.102 R)
• M11: 22,092,763 km (0.087 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 413 - 20,041 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit