🌌 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: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.14

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.47 AU - 0.59 AU

Year: 163 Days

Day: 47.3 Hours

Environment

Temp: 87 °C

Axial Tilt: 38.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 37,881,645 km

• M1: 141,968 km (0.086 R)
• M2: 467,194 km (0.119 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.57 AU - 0.69 AU

Year: 211 Days

Day: 41.8 Hours

Environment

Temp: 38 °C

Axial Tilt: 2.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 37,881,645 km

• M1: 35,754 km (0.116 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.57 AU - 0.75 AU

Year: 226 Days

Day: 22.1 Hours

Environment

Temp: 10 °C

Axial Tilt: 12.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.56

Radius: 1.46

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.59 AU - 0.75 AU

Year: 231 Days

Day: 26.5 Hours

Environment

Temp: 12 °C

Axial Tilt: 2.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.32

Radius: 0.63

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.21 AU - 1.27 AU

Year: 582 Days

Day: 43.1 Hours

Environment

Temp: -62 °C

Axial Tilt: 35.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.94

Radius: 1.3

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 1.55 AU - 2.11 AU

Year: 1044 Days

Day: 32.6 Hours

Environment

Temp: -102 °C

Axial Tilt: 22.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 2.41 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 736.5

Radius: 14

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 2.41 AU - 3.57 AU

Year: 2181 Days

Day: 11.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 37,881,645 km

• M1: 187,895 km (0.109 R)
• M2: 762,201 km (0.086 R)
• M3: 1,479,224 km (0.077 R)
• M4: 2,134,462 km (0.087 R)
• M5: 2,737,791 km (0.114 R)
• M6: 4,271,618 km (0.092 R)
• M7: 4,857,144 km (0.062 R)
• M8: 6,749,108 km (0.051 R)
• M9: 10,840,311 km (0.108 R)
• M10: 12,509,075 km (0.089 R)
• M11: 13,846,629 km (0.088 R)
• M12: 15,325,105 km (0.109 R)
• M13: 17,214,825 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 885.6

Radius: 11

Gravity: 7.32 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 8.72 AU - 10.98 AU

Year: 13038 Days

Day: 12.6 Hours

Environment

Temp: -196 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 37,881,645 km

• M1: 136,882 km (0.094 R)
• M2: 570,117 km (0.073 R)
• M3: 964,607 km (0.075 R)
• M4: 1,307,186 km (0.097 R)
• M5: 2,351,230 km (0.05 R)
• M6: 5,255,224 km (0.099 R)
• M7: 9,819,903 km (0.117 R)
• M8: 10,998,735 km (0.089 R)
• M9: 11,713,364 km (0.077 R)
• M10: 12,395,380 km (0.03 R)
• M11: 12,842,977 km (0.075 R)
• M12: 15,318,224 km (0.089 R)
• M13: 17,530,926 km (0.038 R)
• M14: 18,506,154 km (0.104 R)
• M15: 20,921,711 km (0.094 R)
• M16: 28,085,205 km (0.104 R)
• M17: 31,028,842 km (0.083 R)
• M18: 32,939,207 km (0.079 R)
• M19: 40,802,670 km (0.091 R)
• M20: 41,937,519 km (0.119 R)
• M21: 49,992,916 km (0.064 R)
• M22: 50,965,152 km (0.12 R)
• M23: 51,620,241 km (0.057 R)
• M24: 57,594,432 km (0.119 R)
• M25: 59,202,011 km (0.118 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 197.1

Radius: 13

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 7.6 AU - 12.16 AU

Year: 13098 Days

Day: 11.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 37,881,645 km

• M1: 165,156 km (0.096 R)
• M2: 702,960 km (0.1 R)
• M3: 3,036,837 km (0.095 R)
• M4: 4,518,304 km (0.039 R)
• M5: 5,194,786 km (0.119 R)
• M6: 5,651,060 km (0.072 R)
• M7: 7,110,387 km (0.097 R)
• M8: 8,639,427 km (0.079 R)
• M9: 9,548,533 km (0.103 R)
• M10: 11,813,893 km (0.09 R)
• M11: 15,758,640 km (0.06 R)
• M12: 19,401,946 km (0.088 R)
• M13: 33,015,203 km (0.089 R)
• M14: 33,847,715 km (0.038 R)
• M15: 34,375,197 km (0.06 R)
• M16: 35,772,142 km (0.116 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 336 - 15,448 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit