🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.97

Radius: 0.99

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.58 AU - 0.62 AU

Year: 305 Days

Day: 44.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 19.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 618.7

Radius: 8

Gravity: 9.67 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.63 AU - 0.75 AU

Year: 376 Days

Day: 10.9 Hours

Environment

Temp: -131 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 26,982,214 km

• M1: 99,483 km (0.12 R)
• M2: 513,569 km (0.058 R)
• M3: 772,075 km (0.11 R)
• M4: 1,493,884 km (0.086 R)
• M5: 1,971,700 km (0.045 R)
• M6: 2,356,316 km (0.056 R)
• M7: 2,810,196 km (0.113 R)
• M8: 3,343,812 km (0.077 R)
• M9: 4,136,381 km (0.107 R)
• M10: 4,556,153 km (0.045 R)
• M11: 4,974,129 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 96.7

Radius: 9

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.6 AU - 0.84 AU

Year: 401 Days

Day: 9.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 49.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 26,982,214 km

• M1: 115,938 km (0.109 R)
• M2: 463,305 km (0.108 R)
• M3: 794,963 km (0.079 R)
• M4: 1,260,212 km (0.092 R)
• M5: 2,499,182 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 627.9

Radius: 10.5

Gravity: 5.7 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.41 AU - 1.59 AU

Year: 1205 Days

Day: 14 Hours

Environment

Temp: -174 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 26,982,214 km

• M1: 130,599 km (0.12 R)
• M2: 571,913 km (0.05 R)
• M3: 921,672 km (0.103 R)
• M4: 1,737,130 km (0.094 R)
• M5: 2,355,867 km (0.108 R)
• M6: 2,898,608 km (0.079 R)
• M7: 3,462,892 km (0.117 R)
• M8: 4,048,866 km (0.071 R)
• M9: 4,427,798 km (0.117 R)
• M10: 4,944,359 km (0.052 R)
• M11: 6,120,797 km (0.109 R)
• M12: 8,399,322 km (0.091 R)
• M13: 9,398,636 km (0.103 R)
• M14: 9,880,939 km (0.058 R)
• M15: 10,222,172 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.7

Radius: 10.7

Gravity: 8.16 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 1.24 AU - 2.04 AU

Year: 1378 Days

Day: 14.1 Hours

Environment

Temp: -191 °C

Axial Tilt: 43.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 26,982,214 km

• M1: 167,699 km (0.03 R)
• M2: 527,781 km (0.12 R)
• M3: 1,371,064 km (0.094 R)
• M4: 1,899,743 km (0.11 R)
• M5: 3,213,362 km (0.096 R)
• M6: 4,728,340 km (0.081 R)
• M7: 5,553,671 km (0.076 R)
• M8: 6,597,116 km (0.082 R)
• M9: 9,416,438 km (0.115 R)
• M10: 10,070,779 km (0.047 R)
• M11: 10,790,046 km (0.084 R)
• M12: 14,140,140 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.9

Radius: 11.8

Gravity: 1.85 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 1.38 AU - 1.92 AU

Year: 1390 Days

Day: 9.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 26,982,214 km

• M1: 147,354 km (0.044 R)
• M2: 824,135 km (0.09 R)
• M3: 1,454,690 km (0.071 R)
• M4: 1,884,784 km (0.115 R)
• M5: 3,034,144 km (0.074 R)
• M6: 3,587,656 km (0.117 R)
• M7: 4,671,493 km (0.094 R)
• M8: 6,570,189 km (0.102 R)
• M9: 7,335,681 km (0.07 R)
• M10: 7,911,184 km (0.087 R)
• M11: 8,439,265 km (0.073 R)
• M12: 9,071,465 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 106.8

Radius: 3.6

Gravity: 8.24 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 5.18 AU - 7.68 AU

Year: 10696 Days

Day: 20.9 Hours

Environment

Temp: -212 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 26,982,214 km

• M1: 47,123 km (0.093 R)
• M2: 376,837 km (0.053 R)
• M3: 523,742 km (0.073 R)
• M4: 1,012,778 km (0.093 R)
• M5: 1,141,282 km (0.078 R)
• M6: 1,420,282 km (0.12 R)
• M7: 1,630,467 km (0.069 R)
• M8: 2,434,556 km (0.093 R)
• M9: 2,632,773 km (0.1 R)
• M10: 3,156,066 km (0.106 R)
• M11: 4,526,532 km (0.116 R)
• M12: 7,511,010 km (0.104 R)
• M13: 8,219,356 km (0.086 R)
• M14: 9,323,986 km (0.085 R)
• M15: 9,443,665 km (0.05 R)
• M16: 11,545,964 km (0.085 R)
• M17: 11,776,494 km (0.065 R)
• M18: 12,246,979 km (0.081 R)
• M19: 19,227,515 km (0.102 R)
• M20: 20,680,559 km (0.086 R)
• M21: 22,849,728 km (0.053 R)
• M22: 25,475,769 km (0.106 R)
• M23: 25,945,208 km (0.078 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: 342 - 13,947 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit