🌌 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: 4.04

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.51 AU - 0.57 AU

Year: 151 Days

Day: 39.6 Hours

Environment

Temp: 175 °C

Axial Tilt: 38.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.13 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.65

Radius: 1.48

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.93 AU - 1.33 AU

Year: 457 Days

Day: 29.2 Hours

Environment

Temp: -20 °C

Axial Tilt: 44.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 71,743,500 km

• M1: 34,557 km (0.107 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.18 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.72

Radius: 0.88

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.15 AU - 1.21 AU

Year: 488 Days

Day: 17 Hours

Environment

Temp: -25 °C

Axial Tilt: 4.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.88

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 2.4 AU - 2.66 AU

Year: 1532 Days

Day: 36.5 Hours

Environment

Temp: -93 °C

Axial Tilt: 37.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 71,743,500 km

• M1: 517,010 km (0.074 R)
• M2: 1,994,738 km (0.043 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 2.09 AU - 2.99 AU

Year: 1542 Days

Day: 26.5 Hours

Environment

Temp: -105 °C

Axial Tilt: 14.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.37

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 3.06 AU - 4.18 AU

Year: 2623 Days

Day: 43.3 Hours

Environment

Temp: -137 °C

Axial Tilt: 38.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.07 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.34

Radius: 1.12

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 3.77 AU - 4.37 AU

Year: 3127 Days

Day: 38.6 Hours

Environment

Temp: -129 °C

Axial Tilt: 20.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.12 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 6.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 192.9

Radius: 14.5

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 6.08 AU - 6.26 AU

Year: 5836 Days

Day: 5.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 71,743,500 km

• M1: 188,045 km (0.117 R)
• M2: 647,908 km (0.068 R)
• M3: 1,113,307 km (0.098 R)
• M4: 2,662,842 km (0.088 R)
• M5: 3,240,140 km (0.079 R)
• M6: 3,961,052 km (0.109 R)
• M7: 5,938,437 km (0.114 R)
• M8: 7,454,013 km (0.067 R)
• M9: 9,178,428 km (0.088 R)
• M10: 10,467,363 km (0.086 R)
• M11: 15,009,902 km (0.102 R)
• M12: 18,602,944 km (0.119 R)
• M13: 21,551,967 km (0.086 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 840.9

Radius: 5.1

Gravity: 32.33 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 9.48 AU - 15.22 AU

Year: 16527 Days

Day: 15.5 Hours

Environment

Temp: -190 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 71,743,500 km

• M1: 63,429 km (0.062 R)
• M2: 251,773 km (0.079 R)
• M3: 467,643 km (0.117 R)
• M4: 699,220 km (0.068 R)
• M5: 890,855 km (0.096 R)
• M6: 1,903,633 km (0.067 R)
• M7: 2,261,471 km (0.119 R)
• M8: 3,753,411 km (0.099 R)
• M9: 4,250,375 km (0.099 R)
• M10: 4,414,334 km (0.064 R)
• M11: 5,223,808 km (0.116 R)
• M12: 5,923,028 km (0.105 R)
• M13: 6,465,470 km (0.077 R)
• M14: 7,697,110 km (0.088 R)
• M15: 8,916,332 km (0.077 R)
• M16: 10,978,389 km (0.091 R)
• M17: 14,049,035 km (0.054 R)
• M18: 15,858,122 km (0.071 R)
• M19: 18,942,082 km (0.082 R)
• M20: 20,859,030 km (0.065 R)
• M21: 25,827,025 km (0.098 R)
• M22: 28,525,172 km (0.088 R)
• M23: 32,406,788 km (0.092 R)
• M24: 34,473,333 km (0.12 R)
• M25: 37,039,535 km (0.051 R)
• M26: 42,094,896 km (0.062 R)
• M27: 42,852,609 km (0.048 R)
• M28: 43,619,448 km (0.099 R)
• M29: 48,248,305 km (0.073 R)
• M30: 50,425,553 km (0.113 R)
• M31: 52,842,456 km (0.097 R)
• M32: 53,370,237 km (0.102 R)
• M33: 56,610,976 km (0.073 R)
• M34: 57,533,995 km (0.079 R)
• M35: 64,878,801 km (0.063 R)
• M36: 65,686,480 km (0.12 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 242 - 16,441 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit