🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.41 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.41

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.77 AU - 0.87 AU

Year: 265 Days

Day: 33.6 Hours

Environment

Temp: 155 °C

Axial Tilt: 18.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.83 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.04

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.67 AU - 0.99 AU

Year: 270 Days

Day: 15.6 Hours

Environment

Temp: 191 °C

Axial Tilt: 85.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1

Radius: 1

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 1.6 AU - 1.84 AU

Year: 804 Days

Day: 21.1 Hours

Environment

Temp: -38 °C

Axial Tilt: 45.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 99,170,983 km

• M1: 449,242 km (0.114 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 1.87 AU - 2.21 AU

Year: 1039 Days

Day: 19.2 Hours

Environment

Temp: -52 °C

Axial Tilt: 27.3 °

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: 4.08

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.77 AU - 2.69 AU

Year: 1187 Days

Day: 20.8 Hours

Environment

Temp: -66 °C

Axial Tilt: 47.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.28

Radius: 1.39

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 3.2 AU - 5.04 AU

Year: 2981 Days

Day: 40.5 Hours

Environment

Temp: -126 °C

Axial Tilt: 27.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Ice Giant

Semi-Major Axis: 14.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 344.2

Radius: 6.8

Gravity: 7.44 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 14.16 AU - 14.34 AU

Year: 19174 Days

Day: 23.8 Hours

Environment

Temp: -194 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 99,170,983 km

• M1: 97,837 km (0.067 R)
• M2: 393,891 km (0.12 R)
• M3: 676,482 km (0.101 R)
• M4: 9,909,213 km (0.034 R)
• M5: 11,842,467 km (0.088 R)
• M6: 12,269,569 km (0.089 R)
• M7: 24,565,167 km (0.081 R)
• M8: 26,069,673 km (0.07 R)
• M9: 35,771,693 km (0.081 R)
• M10: 37,310,008 km (0.107 R)
• M11: 37,570,608 km (0.075 R)
• M12: 40,380,953 km (0.091 R)
• M13: 47,324,538 km (0.091 R)
• M14: 52,697,346 km (0.063 R)
• M15: 58,287,669 km (0.085 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 748.7

Radius: 4.9

Gravity: 31.18 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 14.43 AU - 18.75 AU

Year: 24086 Days

Day: 19.1 Hours

Environment

Temp: -183 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 99,170,983 km

• M1: 65,075 km (0.06 R)
• M2: 417,378 km (0.093 R)
• M3: 780,901 km (0.047 R)
• M4: 3,576,436 km (0.11 R)
• M5: 3,993,964 km (0.049 R)
• M6: 5,442,371 km (0.071 R)
• M7: 6,536,081 km (0.075 R)
• M8: 9,032,719 km (0.084 R)
• M9: 9,804,644 km (0.114 R)
• M10: 11,683,743 km (0.092 R)
• M11: 14,021,360 km (0.091 R)
• M12: 15,381,803 km (0.056 R)
• M13: 15,547,408 km (0.043 R)
• M14: 19,693,812 km (0.047 R)
• M15: 21,705,903 km (0.076 R)
• M16: 22,654,503 km (0.084 R)
• M17: 37,016,497 km (0.068 R)
• M18: 45,453,817 km (0.109 R)
• M19: 51,121,781 km (0.096 R)
• M20: 51,676,041 km (0.076 R)
• M21: 65,124,441 km (0.037 R)
• M22: 67,533,864 km (0.081 R)
• M23: 77,038,266 km (0.105 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 619.8

Radius: 7.7

Gravity: 10.45 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 15.9 AU - 23.6 AU

Year: 31286 Days

Day: 19.8 Hours

Environment

Temp: -207 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 99,170,983 km

• M1: 96,491 km (0.085 R)
• M2: 344,973 km (0.102 R)
• M3: 599,887 km (0.12 R)
• M4: 1,285,495 km (0.077 R)
• M5: 1,797,269 km (0.101 R)
• M6: 2,045,900 km (0.087 R)
• M7: 3,688,635 km (0.042 R)
• M8: 5,073,612 km (0.062 R)
• M9: 5,882,787 km (0.071 R)
• M10: 8,083,371 km (0.089 R)
• M11: 9,551,824 km (0.105 R)
• M12: 12,704,450 km (0.108 R)
• M13: 25,105,963 km (0.088 R)
• M14: 25,583,779 km (0.059 R)
• M15: 32,360,712 km (0.117 R)
• M16: 32,926,641 km (0.032 R)
• M17: 37,695,073 km (0.048 R)
• M18: 38,479,564 km (0.041 R)
• M19: 41,227,976 km (0.097 R)
• M20: 42,904,370 km (0.071 R)
• M21: 43,415,995 km (0.107 R)
• M22: 47,474,735 km (0.1 R)
• M23: 55,930,605 km (0.096 R)
• M24: 56,745,614 km (0.074 R)
• M25: 73,046,247 km (0.061 R)
• M26: 78,255,095 km (0.088 R)
• M27: 81,861,900 km (0.114 R)
• M28: 85,578,060 km (0.111 R)
• M29: 87,477,504 km (0.065 R)
• M30: 88,300,143 km (0.114 R)
• M31: 90,518,979 km (0.104 R)
• M32: 91,360,616 km (0.045 R)
• M33: 95,357,124 km (0.06 R)

Kuiper Belt

Range: 30.8 - 54.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 446 - 16,104 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit