🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.44 AU - 0.6 AU

Year: 242 Days

Day: 47.9 Hours

Environment

Temp: -123 °C

Axial Tilt: 6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203

Radius: 14.8

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.68 AU - 1.06 AU

Year: 524 Days

Day: 14.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 55,070,685 km

• M1: 184,155 km (0.116 R)
• M2: 815,608 km (0.099 R)
• M3: 1,468,752 km (0.092 R)
• M4: 2,112,472 km (0.075 R)
• M5: 2,584,602 km (0.045 R)
• M6: 3,301,475 km (0.079 R)
• M7: 3,828,060 km (0.047 R)
• M8: 4,397,878 km (0.073 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 128

Radius: 14.3

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.89 AU - 1.23 AU

Year: 705 Days

Day: 7.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 55,070,685 km

• M1: 177,872 km (0.084 R)
• M2: 629,957 km (0.095 R)
• M3: 1,655,151 km (0.033 R)
• M4: 2,159,894 km (0.049 R)
• M5: 2,852,831 km (0.086 R)
• M6: 3,358,921 km (0.079 R)
• M7: 4,436,624 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 206.5

Radius: 10

Gravity: 2.07 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.53 AU - 1.73 AU

Year: 1344 Days

Day: 8.8 Hours

Environment

Temp: -183 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 55,070,685 km

• M1: 124,465 km (0.118 R)
• M2: 496,067 km (0.117 R)
• M3: 886,367 km (0.095 R)
• M4: 1,728,454 km (0.103 R)
• M5: 2,865,248 km (0.113 R)
• M6: 3,276,941 km (0.072 R)
• M7: 3,843,468 km (0.118 R)
• M8: 5,065,683 km (0.118 R)
• M9: 5,766,250 km (0.087 R)
• M10: 6,488,209 km (0.102 R)
• M11: 7,291,849 km (0.098 R)
• M12: 7,659,261 km (0.101 R)
• M13: 8,063,325 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 824.9

Radius: 13.2

Gravity: 4.73 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 5.18 AU - 6.6 AU

Year: 9230 Days

Day: 13.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 55,070,685 km

• M1: 164,707 km (0.096 R)
• M2: 591,510 km (0.119 R)
• M3: 1,166,115 km (0.103 R)
• M4: 1,669,961 km (0.109 R)
• M5: 2,337,916 km (0.115 R)
• M6: 3,340,969 km (0.12 R)
• M7: 3,941,455 km (0.082 R)
• M8: 4,409,696 km (0.074 R)
• M9: 5,008,238 km (0.038 R)
• M10: 5,425,915 km (0.082 R)
• M11: 6,222,673 km (0.104 R)
• M12: 7,336,878 km (0.053 R)
• M13: 9,419,280 km (0.106 R)
• M14: 11,099,713 km (0.089 R)
• M15: 11,646,344 km (0.11 R)
• M16: 13,212,783 km (0.084 R)
• M17: 15,113,424 km (0.118 R)
• M18: 18,372,414 km (0.114 R)
• M19: 19,138,355 km (0.096 R)
• M20: 24,280,632 km (0.053 R)
• M21: 27,118,803 km (0.048 R)
• M22: 31,999,284 km (0.099 R)
• M23: 34,128,361 km (0.093 R)
• M24: 42,126,760 km (0.101 R)
• M25: 43,593,568 km (0.118 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 21.5

Radius: 4.4

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 7.63 AU - 10.25 AU

Year: 17259 Days

Day: 17.7 Hours

Environment

Temp: -230 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 55,070,685 km

• M1: 55,202 km (0.037 R)
• M2: 218,114 km (0.093 R)
• M3: 381,774 km (0.089 R)
• M4: 1,605,784 km (0.074 R)
• M5: 2,967,274 km (0.107 R)
• M6: 3,194,812 km (0.106 R)
• M7: 14,197,287 km (0.117 R)
• M8: 14,692,306 km (0.057 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 224.1

Radius: 4.4

Gravity: 11.58 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 9.32 AU - 11.4 AU

Year: 21531 Days

Day: 19.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 55,070,685 km

• M1: 57,446 km (0.066 R)
• M2: 263,591 km (0.049 R)
• M3: 648,507 km (0.075 R)
• M4: 988,543 km (0.085 R)
• M5: 1,249,591 km (0.041 R)
• M6: 1,555,070 km (0.117 R)
• M7: 1,709,604 km (0.102 R)
• M8: 2,579,067 km (0.051 R)
• M9: 2,909,828 km (0.054 R)
• M10: 3,049,852 km (0.098 R)
• M11: 3,343,363 km (0.093 R)
• M12: 4,520,997 km (0.109 R)
• M13: 5,271,231 km (0.088 R)
• M14: 6,370,027 km (0.093 R)
• M15: 7,182,343 km (0.119 R)
• M16: 9,510,834 km (0.07 R)
• M17: 17,815,461 km (0.037 R)
• M18: 18,285,647 km (0.111 R)
• M19: 19,912,374 km (0.107 R)
• M20: 22,078,402 km (0.099 R)
• M21: 22,987,209 km (0.055 R)
• M22: 40,698,550 km (0.103 R)
• M23: 43,738,677 km (0.077 R)
• M24: 47,672,353 km (0.109 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: 294 - 13,999 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit