🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.7

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.43 AU - 0.63 AU

Year: 253 Days

Day: 33.9 Hours

Environment

Temp: -123 °C

Axial Tilt: 10.6 °

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: 3.96

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.47 AU - 0.73 AU

Year: 305 Days

Day: 21.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 43.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 214.6

Radius: 8.8

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.86 AU - 0.96 AU

Year: 569 Days

Day: 7.4 Hours

Environment

Temp: -150 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,904,446 km

• M1: 109,506 km (0.103 R)
• M2: 499,806 km (0.101 R)
• M3: 1,071,719 km (0.072 R)
• M4: 1,643,033 km (0.09 R)
• M5: 2,309,941 km (0.107 R)
• M6: 2,705,926 km (0.108 R)
• M7: 3,340,520 km (0.099 R)
• M8: 3,812,502 km (0.107 R)
• M9: 4,134,287 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 33.3

Radius: 8.9

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 1.01 AU - 1.63 AU

Year: 995 Days

Day: 12 Hours

Environment

Temp: -170 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 31,904,446 km

• M1: 110,852 km (0.1 R)
• M2: 588,518 km (0.12 R)
• M3: 1,022,202 km (0.103 R)
• M4: 1,710,951 km (0.052 R)
• M5: 2,232,898 km (0.108 R)
• M6: 2,741,680 km (0.115 R)
• M7: 3,023,971 km (0.092 R)
• M8: 3,345,906 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 98.2

Radius: 9.1

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 1.43 AU - 2.11 AU

Year: 1545 Days

Day: 11.4 Hours

Environment

Temp: -181 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 31,904,446 km

• M1: 113,694 km (0.1 R)
• M2: 643,720 km (0.074 R)
• M3: 959,820 km (0.092 R)
• M4: 1,595,611 km (0.085 R)
• M5: 2,138,502 km (0.11 R)
• M6: 2,510,103 km (0.081 R)
• M7: 2,924,489 km (0.098 R)
• M8: 3,209,473 km (0.109 R)
• M9: 3,685,344 km (0.042 R)
• M10: 4,281,940 km (0.11 R)
• M11: 4,714,427 km (0.11 R)
• M12: 5,007,639 km (0.089 R)
• M13: 5,649,115 km (0.099 R)
• M14: 6,324,699 km (0.046 R)
• M15: 6,783,964 km (0.033 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508.1

Radius: 11.9

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.89 AU - 2.13 AU

Year: 1869 Days

Day: 7.9 Hours

Environment

Temp: -184 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 31,904,446 km

• M1: 147,952 km (0.075 R)
• M2: 603,627 km (0.034 R)
• M3: 1,000,062 km (0.055 R)
• M4: 1,881,792 km (0.051 R)
• M5: 2,521,921 km (0.056 R)
• M6: 3,180,152 km (0.116 R)
• M7: 3,624,756 km (0.106 R)
• M8: 5,279,159 km (0.104 R)
• M9: 6,070,233 km (0.072 R)
• M10: 6,784,114 km (0.082 R)
• M11: 7,416,464 km (0.08 R)
• M12: 8,059,136 km (0.1 R)
• M13: 9,845,485 km (0.079 R)
• M14: 10,761,472 km (0.064 R)
• M15: 13,199,170 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 797.4

Radius: 9.2

Gravity: 9.42 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 3.7 AU - 4.08 AU

Year: 5033 Days

Day: 13.6 Hours

Environment

Temp: -202 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 31,904,446 km

• M1: 114,442 km (0.119 R)
• M2: 404,662 km (0.077 R)
• M3: 1,320,351 km (0.116 R)
• M4: 1,985,762 km (0.069 R)
• M5: 2,695,155 km (0.069 R)
• M6: 3,478,599 km (0.112 R)
• M7: 4,847,270 km (0.097 R)
• M8: 6,285,055 km (0.083 R)
• M9: 6,777,083 km (0.11 R)
• M10: 7,294,691 km (0.095 R)
• M11: 7,617,823 km (0.1 R)
• M12: 7,912,979 km (0.034 R)
• M13: 8,409,046 km (0.089 R)
• M14: 10,022,309 km (0.101 R)
• M15: 10,603,198 km (0.117 R)
• M16: 10,971,657 km (0.111 R)
• M17: 11,588,898 km (0.103 R)
• M18: 12,996,465 km (0.083 R)
• M19: 13,418,779 km (0.11 R)
• M20: 13,795,916 km (0.097 R)
• M21: 14,969,511 km (0.086 R)
• M22: 16,027,467 km (0.106 R)
• M23: 19,091,381 km (0.095 R)
• M24: 24,149,584 km (0.039 R)
• M25: 24,707,884 km (0.082 R)
• M26: 27,027,548 km (0.081 R)
• M27: 28,240,188 km (0.07 R)
• M28: 28,770,812 km (0.093 R)
• M29: 31,809,145 km (0.031 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: 263 - 17,466 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit