🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.74 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.48 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.74

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 1.35 AU - 1.61 AU

Year: 636 Days

Day: 39 Hours

Environment

Temp: -7 °C

Axial Tilt: 8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.95

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.67 AU - 1.87 AU

Year: 831 Days

Day: 19.8 Hours

Environment

Temp: -31 °C

Axial Tilt: 20.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.73

Radius: 1.25

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 1.62 AU - 2.08 AU

Year: 888 Days

Day: 37.8 Hours

Environment

Temp: -39 °C

Axial Tilt: 23.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 1.85 AU - 2.51 AU

Year: 1137 Days

Day: 27.5 Hours

Environment

Temp: -69 °C

Axial Tilt: 35.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.34

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 1.96 AU - 2.5 AU

Year: 1176 Days

Day: 17.3 Hours

Environment

Temp: -74 °C

Axial Tilt: 13.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 87,374,597 km

• M1: 38,895 km (0.088 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.35

Radius: 1.41

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 2.28 AU - 2.58 AU

Year: 1338 Days

Day: 28.4 Hours

Environment

Temp: -81 °C

Axial Tilt: 15.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 8.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.8

Radius: 11.7

Gravity: 3.98 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 7.72 AU - 8.6 AU

Year: 8231 Days

Day: 5.8 Hours

Environment

Temp: -167 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 87,374,597 km

• M1: 145,708 km (0.046 R)
• M2: 612,154 km (0.071 R)
• M3: 1,143,077 km (0.073 R)
• M4: 1,567,486 km (0.103 R)
• M5: 2,178,295 km (0.05 R)
• M6: 2,576,823 km (0.08 R)
• M7: 2,963,235 km (0.094 R)
• M8: 3,592,892 km (0.036 R)
• M9: 5,609,322 km (0.087 R)
• M10: 6,230,303 km (0.114 R)
• M11: 6,716,944 km (0.106 R)
• M12: 8,665,457 km (0.091 R)
• M13: 9,361,685 km (0.108 R)
• M14: 11,266,365 km (0.032 R)
• M15: 15,637,765 km (0.059 R)
• M16: 18,024,150 km (0.088 R)
• M17: 20,340,822 km (0.116 R)
• M18: 23,094,770 km (0.117 R)
• M19: 26,177,383 km (0.114 R)
• M20: 27,263,165 km (0.047 R)
• M21: 29,427,846 km (0.085 R)
• M22: 30,305,237 km (0.098 R)
• M23: 31,704,726 km (0.117 R)
• M24: 33,146,849 km (0.064 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 155.4

Radius: 10.8

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 7.9 AU - 11.48 AU

Year: 10651 Days

Day: 10.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 87,374,597 km

• M1: 134,339 km (0.084 R)
• M2: 945,758 km (0.111 R)
• M3: 1,647,073 km (0.102 R)
• M4: 3,428,783 km (0.053 R)
• M5: 5,785,398 km (0.108 R)
• M6: 7,980,298 km (0.077 R)
• M7: 8,742,649 km (0.028 R)
• M8: 10,019,617 km (0.102 R)
• M9: 10,457,041 km (0.116 R)
• M10: 11,846,057 km (0.105 R)
• M11: 12,187,140 km (0.085 R)
• M12: 14,100,497 km (0.048 R)
• M13: 16,445,892 km (0.037 R)
• M14: 19,173,361 km (0.112 R)
• M15: 20,609,351 km (0.116 R)
• M16: 22,708,358 km (0.119 R)
• M17: 28,791,457 km (0.1 R)
• M18: 29,143,460 km (0.112 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 428.7

Radius: 6.3

Gravity: 10.8 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 18.93 AU - 20.67 AU

Year: 31110 Days

Day: 15.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 87,374,597 km

• M1: 170,990 km (0.056 R)
• M2: 522,545 km (0.098 R)
• M3: 1,525,898 km (0.107 R)
• M4: 1,953,898 km (0.082 R)
• M5: 2,185,475 km (0.055 R)
• M6: 2,912,072 km (0.11 R)
• M7: 3,272,902 km (0.115 R)
• M8: 6,827,048 km (0.109 R)
• M9: 7,116,371 km (0.111 R)
• M10: 13,672,198 km (0.114 R)
• M11: 16,244,982 km (0.112 R)
• M12: 17,376,541 km (0.042 R)
• M13: 20,186,737 km (0.06 R)
• M14: 22,748,600 km (0.074 R)
• M15: 25,404,561 km (0.094 R)
• M16: 26,216,428 km (0.111 R)
• M17: 27,285,604 km (0.035 R)
• M18: 35,740,427 km (0.119 R)
• M19: 69,843,655 km (0.086 R)
• M20: 84,014,164 km (0.087 R)

Kuiper Belt

Range: 31.1 - 54.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 314 - 18,115 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit