🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.53 AU - 0.55 AU

Year: 119 Days

Day: 15.2 Hours

Environment

Temp: 395 °C

Axial Tilt: 36.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.42 AU - 2.28 AU

Year: 753 Days

Day: 36.9 Hours

Environment

Temp: 97 °C

Axial Tilt: 6.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 2.56 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.89

Radius: 0.95

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 2.32 AU - 2.8 AU

Year: 1226 Days

Day: 13.5 Hours

Environment

Temp: -10 °C

Axial Tilt: 29.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 3.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.15

Radius: 1.77

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 3.07 AU - 4.33 AU

Year: 2130 Days

Day: 26.1 Hours

Environment

Temp: -58 °C

Axial Tilt: 31.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.53

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 4.02 AU - 5.18 AU

Year: 2952 Days

Day: 26.6 Hours

Environment

Temp: -78 °C

Axial Tilt: 18.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 105,002,272 km

• M1: 42,635 km (0.101 R)

Planet 6 - Terrestrial

Semi-Major Axis: 5.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 4.57 AU - 6.27 AU

Year: 3776 Days

Day: 32.3 Hours

Environment

Temp: -91 °C

Axial Tilt: 27.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 5.31 AU - 6.09 AU

Year: 4072 Days

Day: 31.6 Hours

Environment

Temp: -95 °C

Axial Tilt: 47.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Terrestrial

Semi-Major Axis: 7.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.75

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 6.12 AU - 9.44 AU

Year: 6493 Days

Day: 33.5 Hours

Environment

Temp: -120 °C

Axial Tilt: 5.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 13.94 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 20.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 226.7

Radius: 7.5

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 20.03 AU - 20.15 AU

Year: 26944 Days

Day: 17.9 Hours

Environment

Temp: -169 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 105,002,272 km

• M1: 93,349 km (0.089 R)
• M2: 419,472 km (0.038 R)
• M3: 661,821 km (0.088 R)
• M4: 1,001,857 km (0.092 R)
• M5: 2,794,937 km (0.115 R)
• M6: 5,225,753 km (0.076 R)
• M7: 6,664,436 km (0.063 R)
• M8: 7,316,682 km (0.093 R)
• M9: 7,589,250 km (0.076 R)
• M10: 8,058,538 km (0.118 R)
• M11: 8,497,309 km (0.046 R)
• M12: 9,965,013 km (0.113 R)
• M13: 10,527,950 km (0.106 R)
• M14: 10,875,765 km (0.111 R)
• M15: 11,778,888 km (0.119 R)
• M16: 12,472,274 km (0.077 R)
• M17: 13,596,950 km (0.08 R)
• M18: 16,430,185 km (0.06 R)
• M19: 16,977,264 km (0.025 R)
• M20: 17,215,424 km (0.082 R)
• M21: 18,776,029 km (0.098 R)
• M22: 19,287,803 km (0.11 R)
• M23: 20,518,246 km (0.1 R)
• M24: 20,788,569 km (0.088 R)
• M25: 30,632,109 km (0.063 R)
• M26: 33,784,884 km (0.113 R)
• M27: 35,698,689 km (0.111 R)
• M28: 38,634,697 km (0.069 R)
• M29: 40,868,493 km (0.099 R)
• M30: 61,731,711 km (0.099 R)
• M31: 63,624,274 km (0.115 R)
• M32: 64,007,394 km (0.118 R)

Planet 10 - Ice Giant

Semi-Major Axis: 22.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 675

Radius: 6.3

Gravity: 17.01 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 22.06 AU - 23.62 AU

Year: 32662 Days

Day: 22.2 Hours

Environment

Temp: -177 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 105,002,272 km

• M1: 78,389 km (0.056 R)
• M2: 1,022,501 km (0.106 R)
• M3: 1,797,718 km (0.055 R)
• M4: 2,260,424 km (0.036 R)
• M5: 2,637,410 km (0.114 R)
• M6: 2,883,050 km (0.081 R)
• M7: 7,256,993 km (0.033 R)
• M8: 8,834,652 km (0.105 R)
• M9: 10,902,543 km (0.042 R)
• M10: 11,252,303 km (0.047 R)
• M11: 11,609,692 km (0.099 R)
• M12: 11,974,562 km (0.036 R)
• M13: 13,914,846 km (0.115 R)
• M14: 14,410,015 km (0.12 R)
• M15: 20,762,838 km (0.087 R)
• M16: 25,694,481 km (0.104 R)
• M17: 34,847,328 km (0.109 R)
• M18: 37,157,718 km (0.091 R)
• M19: 47,979,627 km (0.113 R)
• M20: 51,809,931 km (0.113 R)
• M21: 61,163,239 km (0.058 R)
• M22: 61,382,998 km (0.074 R)
• M23: 75,048,315 km (0.058 R)
• M24: 80,720,318 km (0.078 R)
• M25: 81,781,416 km (0.092 R)
• M26: 82,583,261 km (0.083 R)
• M27: 84,747,194 km (0.069 R)
• M28: 95,248,515 km (0.028 R)

Kuiper Belt

Range: 36.6 - 53.6 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 250 - 13,579 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit