🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.11

Radius: 0.41

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.5 AU - 0.68 AU

Year: 159 Days

Day: 15 Hours

Environment

Temp: 204 °C

Axial Tilt: 28.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 79,061,302 km

• M1: 9,574 km (0.105 R)
• M2: 68,815 km (0.104 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.72 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.26

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.71 AU - 0.73 AU

Year: 215 Days

Day: 20.2 Hours

Environment

Temp: 182 °C

Axial Tilt: 23.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.89

Radius: 0.95

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.83 AU - 0.89 AU

Year: 280 Days

Day: 17.6 Hours

Environment

Temp: 172 °C

Axial Tilt: 13.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 79,061,302 km

• M1: 152,739 km (0.12 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.09 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.79

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.93 AU - 1.25 AU

Year: 400 Days

Day: 29 Hours

Environment

Temp: 49 °C

Axial Tilt: 49.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.54 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.39

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 1.53 AU - 1.55 AU

Year: 672 Days

Day: 32.8 Hours

Environment

Temp: -14 °C

Axial Tilt: 28.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 6 - Terrestrial

Semi-Major Axis: 3.32 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.45

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 2.71 AU - 3.93 AU

Year: 2126 Days

Day: 25.9 Hours

Environment

Temp: -101 °C

Axial Tilt: 43.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 5.46 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.47

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 4.88 AU - 6.04 AU

Year: 4484 Days

Day: 21.1 Hours

Environment

Temp: -146 °C

Axial Tilt: 33.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 10.57 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 15.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 730.4

Radius: 4.4

Gravity: 37.73 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 13.44 AU - 17.9 AU

Year: 21801 Days

Day: 21.1 Hours

Environment

Temp: -197 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 79,061,302 km

• M1: 54,753 km (0.1 R)
• M2: 219,310 km (0.107 R)
• M3: 712,983 km (0.105 R)
• M4: 1,235,379 km (0.101 R)
• M5: 1,451,399 km (0.099 R)
• M6: 3,288,610 km (0.057 R)
• M7: 3,433,421 km (0.047 R)
• M8: 3,829,855 km (0.12 R)
• M9: 4,188,740 km (0.098 R)
• M10: 5,850,922 km (0.094 R)
• M11: 6,107,183 km (0.077 R)
• M12: 6,550,891 km (0.086 R)
• M13: 8,327,365 km (0.058 R)
• M14: 10,216,637 km (0.087 R)
• M15: 14,973,700 km (0.114 R)
• M16: 15,860,516 km (0.06 R)
• M17: 17,386,414 km (0.066 R)
• M18: 17,915,991 km (0.108 R)
• M19: 19,007,457 km (0.107 R)
• M20: 19,569,346 km (0.062 R)
• M21: 20,046,115 km (0.039 R)
• M22: 20,335,886 km (0.094 R)
• M23: 20,530,513 km (0.032 R)
• M24: 20,824,921 km (0.098 R)
• M25: 24,142,254 km (0.089 R)
• M26: 29,752,922 km (0.076 R)
• M27: 32,992,314 km (0.112 R)
• M28: 36,459,095 km (0.088 R)
• M29: 39,552,630 km (0.074 R)
• M30: 44,595,873 km (0.113 R)
• M31: 49,874,285 km (0.053 R)
• M32: 50,228,532 km (0.112 R)
• M33: 52,571,534 km (0.099 R)
• M34: 56,125,531 km (0.08 R)
• M35: 57,280,277 km (0.115 R)
• M36: 68,831,476 km (0.109 R)
• M37: 71,269,174 km (0.109 R)
• M38: 71,943,860 km (0.093 R)
• M39: 72,395,945 km (0.079 R)
• M40: 75,381,021 km (0.092 R)
• M41: 77,495,138 km (0.065 R)
• M42: 78,208,420 km (0.105 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 511.9

Radius: 6.9

Gravity: 10.75 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 14.7 AU - 19.18 AU

Year: 24505 Days

Day: 19.4 Hours

Environment

Temp: -183 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 79,061,302 km

• M1: 172,038 km (0.09 R)
• M2: 689,646 km (0.026 R)
• M3: 997,369 km (0.099 R)
• M4: 1,555,519 km (0.098 R)
• M5: 1,856,958 km (0.07 R)
• M6: 2,326,546 km (0.119 R)
• M7: 3,002,130 km (0.109 R)
• M8: 9,040,050 km (0.097 R)
• M9: 9,377,243 km (0.107 R)
• M10: 10,810,391 km (0.051 R)
• M11: 13,011,574 km (0.089 R)
• M12: 13,586,927 km (0.079 R)
• M13: 18,456,189 km (0.099 R)
• M14: 20,983,495 km (0.06 R)
• M15: 21,277,754 km (0.096 R)
• M16: 27,641,498 km (0.029 R)
• M17: 31,700,986 km (0.043 R)
• M18: 32,218,445 km (0.099 R)
• M19: 36,000,428 km (0.101 R)
• M20: 44,431,764 km (0.094 R)
• M21: 54,457,664 km (0.112 R)
• M22: 58,623,815 km (0.061 R)
• M23: 59,599,492 km (0.11 R)
• M24: 62,186,638 km (0.093 R)
• M25: 66,945,646 km (0.11 R)
• M26: 68,225,904 km (0.085 R)
• M27: 74,872,986 km (0.097 R)

Kuiper Belt

Range: 31.2 - 54.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 389 - 13,874 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit