🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.25

Radius: 1.38

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.58 AU - 0.7 AU

Year: 184 Days

Day: 46.8 Hours

Environment

Temp: 181 °C

Axial Tilt: 22.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 88,794,166 km

• M1: 32,164 km (0.096 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.99

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.1 AU - 1.36 AU

Year: 491 Days

Day: 14.3 Hours

Environment

Temp: 8 °C

Axial Tilt: 136.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 88,794,166 km

• M1: 40,391 km (0.077 R)
• M2: 107,112 km (0.093 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.3 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.15

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.07 AU - 1.53 AU

Year: 533 Days

Day: 29.5 Hours

Environment

Temp: -9 °C

Axial Tilt: 39.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.04

Radius: 1.02

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.74 AU - 2.56 AU

Year: 1135 Days

Day: 17.9 Hours

Environment

Temp: -64 °C

Axial Tilt: 0.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 88,794,166 km

• M1: 24,384 km (0.09 R)
• M2: 147,204 km (0.059 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.48 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 1.94 AU - 3.02 AU

Year: 1406 Days

Day: 20.4 Hours

Environment

Temp: -74 °C

Axial Tilt: 36.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 5

Radius: 1.9

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 2.37 AU - 2.93 AU

Year: 1553 Days

Day: 36.5 Hours

Environment

Temp: -98 °C

Axial Tilt: 38.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 88,794,166 km

• M1: 689,197 km (0.087 R)

Planet 7 - Terrestrial

Semi-Major Axis: 4.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.02

Radius: 1.56

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 3.99 AU - 4.81 AU

Year: 3322 Days

Day: 43.9 Hours

Environment

Temp: -123 °C

Axial Tilt: 1.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 88,794,166 km

• M1: 45,328 km (0.036 R)

Asteroid Belt

Center: 7.19 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 9.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 537.8

Radius: 10.8

Gravity: 4.61 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 8.94 AU - 11 AU

Year: 11330 Days

Day: 10.5 Hours

Environment

Temp: -180 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 88,794,166 km

• M1: 134,339 km (0.104 R)
• M2: 511,924 km (0.119 R)
• M3: 847,771 km (0.09 R)
• M4: 1,467,406 km (0.119 R)
• M5: 4,024,781 km (0.115 R)
• M6: 4,921,620 km (0.104 R)
• M7: 5,302,796 km (0.09 R)
• M8: 5,911,509 km (0.063 R)
• M9: 6,604,148 km (0.072 R)
• M10: 6,989,811 km (0.068 R)
• M11: 8,550,266 km (0.08 R)
• M12: 12,404,655 km (0.105 R)
• M13: 12,933,933 km (0.049 R)
• M14: 13,786,940 km (0.061 R)
• M15: 16,083,417 km (0.117 R)
• M16: 17,504,596 km (0.084 R)
• M17: 18,472,195 km (0.072 R)
• M18: 19,949,923 km (0.1 R)
• M19: 22,788,543 km (0.039 R)
• M20: 24,486,927 km (0.032 R)
• M21: 26,460,572 km (0.113 R)
• M22: 27,043,405 km (0.114 R)
• M23: 29,877,238 km (0.106 R)
• M24: 31,474,195 km (0.026 R)
• M25: 33,577,541 km (0.053 R)
• M26: 33,918,026 km (0.034 R)
• M27: 35,303,153 km (0.119 R)
• M28: 36,725,529 km (0.026 R)
• M29: 37,572,702 km (0.104 R)
• M30: 41,481,694 km (0.094 R)
• M31: 43,198,779 km (0.087 R)
• M32: 44,415,009 km (0.117 R)
• M33: 45,932,231 km (0.11 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 648.2

Radius: 4.6

Gravity: 30.63 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 14.97 AU - 19.65 AU

Year: 25919 Days

Day: 21.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 88,794,166 km

• M1: 57,595 km (0.081 R)
• M2: 368,908 km (0.113 R)
• M3: 592,108 km (0.105 R)
• M4: 1,208,751 km (0.098 R)
• M5: 1,902,586 km (0.091 R)
• M6: 2,453,106 km (0.049 R)
• M7: 2,910,726 km (0.097 R)
• M8: 3,960,454 km (0.075 R)
• M9: 6,631,524 km (0.079 R)
• M10: 12,897,730 km (0.051 R)
• M11: 13,952,545 km (0.111 R)
• M12: 17,822,492 km (0.045 R)
• M13: 18,005,301 km (0.095 R)
• M14: 26,152,999 km (0.049 R)
• M15: 28,082,213 km (0.088 R)
• M16: 28,579,028 km (0.034 R)
• M17: 29,718,066 km (0.101 R)
• M18: 31,150,914 km (0.097 R)
• M19: 36,015,538 km (0.082 R)
• M20: 46,520,450 km (0.116 R)
• M21: 49,522,879 km (0.089 R)
• M22: 55,910,259 km (0.047 R)
• M23: 70,744,833 km (0.025 R)
• M24: 77,345,690 km (0.046 R)
• M25: 81,546,996 km (0.112 R)
• M26: 84,860,589 km (0.063 R)

Kuiper Belt

Range: 30.5 - 57.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 554 - 13,851 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit