🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.47 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 107.8

Radius: 14.1

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.76 AU - 1.12 AU

Year: 598 Days

Day: 11.5 Hours

Environment

Temp: -145 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 39,147,342 km

• M1: 175,777 km (0.07 R)
• M2: 770,728 km (0.079 R)
• M3: 1,777,073 km (0.095 R)
• M4: 2,416,604 km (0.076 R)
• M5: 3,822,226 km (0.113 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 651.4

Radius: 8.2

Gravity: 9.69 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 1.05 AU - 1.25 AU

Year: 809 Days

Day: 14.2 Hours

Environment

Temp: -172 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 39,147,342 km

• M1: 102,026 km (0.067 R)
• M2: 438,471 km (0.094 R)
• M3: 829,221 km (0.037 R)
• M4: 1,090,120 km (0.114 R)
• M5: 1,474,287 km (0.057 R)
• M6: 2,451,460 km (0.081 R)
• M7: 2,758,585 km (0.116 R)
• M8: 3,221,141 km (0.107 R)
• M9: 3,749,371 km (0.115 R)
• M10: 4,924,762 km (0.06 R)
• M11: 5,416,490 km (0.113 R)
• M12: 6,476,541 km (0.117 R)
• M13: 7,202,838 km (0.093 R)
• M14: 7,645,050 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 51.6

Radius: 10.8

Gravity: 0.44 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.5 AU - 1.6 AU

Year: 1266 Days

Day: 5.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 39,147,342 km

• M1: 135,236 km (0.068 R)
• M2: 540,497 km (0.105 R)
• M3: 1,002,306 km (0.079 R)
• M4: 1,505,403 km (0.106 R)
• M5: 4,531,020 km (0.032 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 130.4

Radius: 11.3

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 1.58 AU - 2.54 AU

Year: 1940 Days

Day: 8.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 39,147,342 km

• M1: 152,590 km (0.107 R)
• M2: 1,230,742 km (0.073 R)
• M3: 1,729,800 km (0.108 R)
• M4: 2,756,341 km (0.098 R)
• M5: 5,029,929 km (0.075 R)
• M6: 6,598,164 km (0.102 R)
• M7: 8,521,992 km (0.068 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 145.4

Radius: 4.2

Gravity: 8.24 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 6.47 AU - 7.05 AU

Year: 11530 Days

Day: 23.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 39,147,342 km

• M1: 59,690 km (0.075 R)
• M2: 217,515 km (0.092 R)
• M3: 497,114 km (0.103 R)
• M4: 741,257 km (0.098 R)
• M5: 1,023,997 km (0.059 R)
• M6: 1,480,271 km (0.101 R)
• M7: 3,208,126 km (0.071 R)
• M8: 3,501,787 km (0.08 R)
• M9: 4,314,552 km (0.093 R)
• M10: 5,834,467 km (0.101 R)
• M11: 7,826,063 km (0.047 R)
• M12: 11,286,112 km (0.118 R)
• M13: 13,885,076 km (0.064 R)
• M14: 14,549,739 km (0.066 R)
• M15: 14,889,925 km (0.051 R)
• M16: 15,527,511 km (0.089 R)
• M17: 16,243,486 km (0.091 R)
• M18: 17,999,167 km (0.044 R)
• M19: 19,670,175 km (0.078 R)
• M20: 19,877,368 km (0.09 R)
• M21: 28,345,805 km (0.093 R)
• M22: 29,413,335 km (0.118 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 107.1

Radius: 7.6

Gravity: 1.85 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 6.92 AU - 9.62 AU

Year: 15602 Days

Day: 17.5 Hours

Environment

Temp: -234 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 39,147,342 km

• M1: 94,695 km (0.092 R)
• M2: 384,317 km (0.044 R)
• M3: 1,077,404 km (0.116 R)
• M4: 1,670,709 km (0.051 R)
• M5: 3,106,250 km (0.103 R)
• M6: 6,409,072 km (0.113 R)
• M7: 7,465,383 km (0.114 R)
• M8: 8,074,096 km (0.111 R)
• M9: 9,564,091 km (0.057 R)
• M10: 10,008,546 km (0.109 R)
• M11: 15,121,802 km (0.116 R)
• M12: 16,851,751 km (0.063 R)
• M13: 17,964,311 km (0.08 R)
• M14: 20,995,463 km (0.112 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 152.2

Radius: 5.8

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 6.41 AU - 10.17 AU

Year: 15658 Days

Day: 15.7 Hours

Environment

Temp: -235 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 39,147,342 km

• M1: 72,106 km (0.086 R)
• M2: 929,900 km (0.083 R)
• M3: 1,835,117 km (0.11 R)
• M4: 2,535,684 km (0.054 R)
• M5: 8,179,264 km (0.115 R)
• M6: 11,255,145 km (0.094 R)
• M7: 11,877,173 km (0.086 R)
• M8: 17,090,210 km (0.109 R)
• M9: 20,003,778 km (0.083 R)
• M10: 20,532,158 km (0.078 R)
• M11: 21,616,892 km (0.11 R)
• M12: 24,495,155 km (0.064 R)
• M13: 28,463,089 km (0.116 R)
• M14: 31,807,649 km (0.107 R)
• M15: 33,047,965 km (0.106 R)
• M16: 37,872,047 km (0.058 R)
• M17: 38,913,398 km (0.08 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 255 - 11,732 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit