🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.57

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.6 AU - 0.74 AU

Year: 202 Days

Day: 17.7 Hours

Environment

Temp: 135 °C

Axial Tilt: 8.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.7 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.67 AU - 0.74 AU

Year: 216 Days

Day: 42.8 Hours

Environment

Temp: 160 °C

Axial Tilt: 9.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 12,322,073 km

• M1: 111,301 km (0.086 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.44

Radius: 1.16

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.81 AU - 0.89 AU

Year: 289 Days

Day: 25.3 Hours

Environment

Temp: 130 °C

Axial Tilt: 7.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 12,322,073 km

• M1: 116,836 km (0.119 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.32 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.98

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 1.15 AU - 1.49 AU

Year: 560 Days

Day: 14.5 Hours

Environment

Temp: -5 °C

Axial Tilt: 16.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.35

Radius: 0.66

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.69 AU - 2.31 AU

Year: 1044 Days

Day: 43 Hours

Environment

Temp: -76 °C

Axial Tilt: 0.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 12,322,073 km

• M1: 137,480 km (0.037 R)
• M2: 658,530 km (0.063 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.48

Radius: 1.17

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 2.27 AU - 2.33 AU

Year: 1287 Days

Day: 28.2 Hours

Environment

Temp: -77 °C

Axial Tilt: 25.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.96 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 5.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 541.8

Radius: 13.2

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 4.89 AU - 6.33 AU

Year: 4903 Days

Day: 7.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 12,322,073 km

• M1: 164,258 km (0.11 R)
• M2: 839,244 km (0.12 R)
• M3: 1,338,751 km (0.055 R)
• M4: 1,984,117 km (0.036 R)
• M5: 2,466,270 km (0.071 R)
• M6: 3,118,966 km (0.089 R)
• M7: 4,151,341 km (0.078 R)
• M8: 4,672,839 km (0.057 R)
• M9: 5,318,354 km (0.034 R)
• M10: 5,935,146 km (0.095 R)
• M11: 7,047,406 km (0.077 R)
• M12: 9,642,032 km (0.115 R)
• M13: 10,305,049 km (0.051 R)
• M14: 14,349,877 km (0.05 R)
• M15: 14,995,391 km (0.102 R)
• M16: 19,805,561 km (0.111 R)
• M17: 20,673,977 km (0.074 R)
• M18: 21,358,986 km (0.088 R)
• M19: 23,876,867 km (0.112 R)
• M20: 26,028,982 km (0.116 R)
• M21: 26,506,499 km (0.064 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 990.9

Radius: 14.6

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 4.58 AU - 7.4 AU

Year: 5409 Days

Day: 12.3 Hours

Environment

Temp: -152 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 12,322,073 km

• M1: 181,612 km (0.097 R)
• M2: 863,180 km (0.047 R)
• M3: 1,491,940 km (0.067 R)
• M4: 2,439,044 km (0.092 R)
• M5: 3,149,334 km (0.077 R)
• M6: 4,141,467 km (0.118 R)
• M7: 5,303,843 km (0.065 R)
• M8: 7,313,391 km (0.089 R)
• M9: 9,700,674 km (0.11 R)
• M10: 12,997,063 km (0.055 R)
• M11: 14,283,305 km (0.077 R)
• M12: 15,347,994 km (0.108 R)
• M13: 16,274,902 km (0.075 R)
• M14: 17,173,536 km (0.083 R)
• M15: 20,141,558 km (0.116 R)
• M16: 22,016,319 km (0.078 R)
• M17: 22,797,968 km (0.103 R)
• M18: 24,833,097 km (0.072 R)
• M19: 31,959,939 km (0.085 R)
• M20: 34,192,837 km (0.112 R)
• M21: 34,714,485 km (0.081 R)
• M22: 35,773,638 km (0.06 R)

Planet 9 - Gas Giant

Semi-Major Axis: 6.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.2

Radius: 14.4

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 6.25 AU - 7.03 AU

Year: 6313 Days

Day: 5.3 Hours

Environment

Temp: -161 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 12,322,073 km

• M1: 191,934 km (0.099 R)
• M2: 652,097 km (0.105 R)
• M3: 1,384,379 km (0.039 R)
• M4: 2,243,818 km (0.104 R)
• M5: 2,801,968 km (0.118 R)
• M6: 5,809,633 km (0.119 R)
• M7: 6,680,293 km (0.095 R)
• M8: 7,768,767 km (0.081 R)
• M9: 8,258,251 km (0.048 R)
• M10: 9,727,452 km (0.119 R)
• M11: 10,855,420 km (0.108 R)
• M12: 11,925,793 km (0.111 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 233 - 12,412 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit