🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.93

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.47 AU - 0.67 AU

Year: 196 Days

Day: 34.7 Hours

Environment

Temp: -4 °C

Axial Tilt: 5.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.09

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.7 AU - 0.9 AU

Year: 327 Days

Day: 34.3 Hours

Environment

Temp: -43 °C

Axial Tilt: 33.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,428,418 km

• M1: 136,732 km (0.11 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.97

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.04 AU - 1.18 AU

Year: 534 Days

Day: 37.2 Hours

Environment

Temp: -88 °C

Axial Tilt: 14.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.65

Radius: 1.22

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 1.65 AU - 2.25 AU

Year: 1243 Days

Day: 19.9 Hours

Environment

Temp: -138 °C

Axial Tilt: 32.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 54,428,418 km

• M1: 28,424 km (0.1 R)
• M2: 1,092,513 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 521.9

Radius: 8.5

Gravity: 7.22 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 1.82 AU - 2.9 AU

Year: 1655 Days

Day: 5.3 Hours

Environment

Temp: -142 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 54,428,418 km

• M1: 105,766 km (0.057 R)
• M2: 418,425 km (0.095 R)
• M3: 742,305 km (0.061 R)
• M4: 1,306,737 km (0.108 R)
• M5: 1,822,102 km (0.082 R)
• M6: 2,155,855 km (0.085 R)
• M7: 2,891,428 km (0.053 R)
• M8: 3,586,310 km (0.071 R)
• M9: 3,904,056 km (0.094 R)
• M10: 4,406,704 km (0.116 R)
• M11: 5,115,649 km (0.075 R)
• M12: 5,584,937 km (0.077 R)
• M13: 6,152,960 km (0.047 R)
• M14: 6,808,947 km (0.078 R)
• M15: 7,141,204 km (0.107 R)
• M16: 7,782,829 km (0.06 R)
• M17: 9,810,030 km (0.069 R)
• M18: 10,234,290 km (0.12 R)
• M19: 11,437,505 km (0.068 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 567.6

Radius: 15

Gravity: 2.52 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 2.79 AU - 4.49 AU

Year: 3171 Days

Day: 11.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 54,428,418 km

• M1: 186,549 km (0.104 R)
• M2: 1,045,988 km (0.079 R)
• M3: 2,286,005 km (0.114 R)
• M4: 3,053,592 km (0.027 R)
• M5: 3,908,693 km (0.108 R)
• M6: 5,036,212 km (0.079 R)
• M7: 5,910,612 km (0.113 R)
• M8: 9,511,582 km (0.11 R)
• M9: 10,338,410 km (0.046 R)
• M10: 11,667,886 km (0.117 R)
• M11: 19,773,697 km (0.058 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 668.6

Radius: 9.5

Gravity: 7.41 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 3.38 AU - 5.04 AU

Year: 3944 Days

Day: 7.7 Hours

Environment

Temp: -181 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 54,428,418 km

• M1: 118,182 km (0.093 R)
• M2: 492,476 km (0.111 R)
• M3: 952,190 km (0.077 R)
• M4: 1,559,408 km (0.1 R)
• M5: 1,937,292 km (0.114 R)
• M6: 2,484,222 km (0.103 R)
• M7: 3,039,829 km (0.109 R)
• M8: 3,864,711 km (0.098 R)
• M9: 4,306,773 km (0.075 R)
• M10: 5,033,071 km (0.1 R)
• M11: 5,895,353 km (0.102 R)
• M12: 6,666,081 km (0.048 R)
• M13: 6,979,788 km (0.052 R)
• M14: 8,015,753 km (0.056 R)
• M15: 8,443,154 km (0.1 R)
• M16: 9,227,795 km (0.074 R)
• M17: 12,011,811 km (0.112 R)
• M18: 13,544,741 km (0.099 R)
• M19: 16,763,339 km (0.09 R)
• M20: 19,425,134 km (0.105 R)
• M21: 20,327,957 km (0.119 R)
• M22: 20,789,766 km (0.102 R)
• M23: 21,258,605 km (0.069 R)
• M24: 22,990,500 km (0.088 R)
• M25: 24,889,495 km (0.101 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 632.2

Radius: 5.3

Gravity: 22.51 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 7.07 AU - 11.19 AU

Year: 12595 Days

Day: 21.3 Hours

Environment

Temp: -198 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 54,428,418 km

• M1: 67,469 km (0.06 R)
• M2: 367,412 km (0.099 R)
• M3: 1,391,709 km (0.097 R)
• M4: 1,638,845 km (0.097 R)
• M5: 2,864,500 km (0.097 R)
• M6: 5,186,708 km (0.092 R)
• M7: 6,383,640 km (0.104 R)
• M8: 8,113,441 km (0.104 R)
• M9: 8,626,112 km (0.081 R)
• M10: 10,563,405 km (0.111 R)
• M11: 13,919,633 km (0.113 R)
• M12: 14,995,242 km (0.114 R)
• M13: 17,692,491 km (0.109 R)
• M14: 19,195,800 km (0.101 R)
• M15: 20,020,234 km (0.112 R)
• M16: 20,356,680 km (0.111 R)
• M17: 21,127,109 km (0.113 R)
• M18: 26,665,671 km (0.08 R)
• M19: 27,899,554 km (0.119 R)
• M20: 29,930,196 km (0.102 R)
• M21: 50,763,045 km (0.08 R)
• M22: 53,940,654 km (0.03 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: 388 - 14,395 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit