🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.71 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.12

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.19 AU - 1.65 AU

Year: 621 Days

Day: 33.3 Hours

Environment

Temp: -40 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.56

Radius: 0.79

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 1.46 AU - 1.5 AU

Year: 661 Days

Day: 42.3 Hours

Environment

Temp: -43 °C

Axial Tilt: 29.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 103,996,127 km

• M1: 88,412 km (0.082 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.64

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.43 AU - 2.01 AU

Year: 828 Days

Day: 24.2 Hours

Environment

Temp: -62 °C

Axial Tilt: 47 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.24

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 2.05 AU - 2.47 AU

Year: 1247 Days

Day: 18.1 Hours

Environment

Temp: -72 °C

Axial Tilt: 32.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 103,996,127 km

• M1: 68,366 km (0.09 R)
• M2: 983,905 km (0.092 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.01

Radius: 1.32

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 3.38 AU - 3.78 AU

Year: 2487 Days

Day: 15.1 Hours

Environment

Temp: -119 °C

Axial Tilt: 33.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.37 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 7.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 756.9

Radius: 13.6

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 6.4 AU - 7.9 AU

Year: 7018 Days

Day: 10.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 103,996,127 km

• M1: 169,195 km (0.101 R)
• M2: 807,679 km (0.067 R)
• M3: 1,263,803 km (0.1 R)
• M4: 1,741,618 km (0.119 R)
• M5: 2,914,167 km (0.099 R)
• M6: 3,626,103 km (0.109 R)
• M7: 5,128,065 km (0.099 R)
• M8: 6,203,225 km (0.088 R)
• M9: 7,085,853 km (0.094 R)
• M10: 10,288,444 km (0.057 R)
• M11: 13,306,731 km (0.087 R)
• M12: 14,773,987 km (0.036 R)
• M13: 15,704,485 km (0.105 R)
• M14: 16,411,634 km (0.048 R)
• M15: 17,005,688 km (0.118 R)
• M16: 17,545,885 km (0.088 R)
• M17: 18,027,890 km (0.079 R)
• M18: 24,695,467 km (0.059 R)
• M19: 25,917,233 km (0.07 R)
• M20: 29,824,430 km (0.11 R)
• M21: 31,613,172 km (0.057 R)
• M22: 35,842,752 km (0.088 R)
• M23: 38,553,914 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 373.4

Radius: 11.5

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 8.68 AU - 11.3 AU

Year: 11591 Days

Day: 7 Hours

Environment

Temp: -178 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 103,996,127 km

• M1: 143,016 km (0.094 R)
• M2: 799,900 km (0.1 R)
• M3: 1,329,177 km (0.09 R)
• M4: 1,896,003 km (0.087 R)
• M5: 2,324,302 km (0.099 R)
• M6: 3,566,862 km (0.107 R)
• M7: 4,557,050 km (0.047 R)
• M8: 5,116,846 km (0.078 R)
• M9: 7,868,698 km (0.098 R)
• M10: 8,372,394 km (0.103 R)
• M11: 10,555,775 km (0.047 R)
• M12: 15,232,354 km (0.119 R)
• M13: 16,016,098 km (0.1 R)
• M14: 18,310,181 km (0.048 R)
• M15: 19,046,502 km (0.118 R)
• M16: 19,726,125 km (0.07 R)
• M17: 22,607,081 km (0.09 R)
• M18: 23,799,675 km (0.074 R)
• M19: 29,689,642 km (0.049 R)
• M20: 31,640,548 km (0.111 R)
• M21: 35,117,203 km (0.046 R)
• M22: 41,422,304 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 849.9

Radius: 5.1

Gravity: 32.68 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 16.34 AU - 20.22 AU

Year: 28690 Days

Day: 23.6 Hours

Environment

Temp: -203 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 103,996,127 km

• M1: 149,747 km (0.094 R)
• M2: 386,860 km (0.109 R)
• M3: 907,461 km (0.091 R)
• M4: 1,344,586 km (0.071 R)
• M5: 1,766,601 km (0.112 R)
• M6: 3,533,352 km (0.054 R)
• M7: 5,034,716 km (0.061 R)
• M8: 5,811,578 km (0.093 R)
• M9: 5,994,536 km (0.097 R)
• M10: 8,098,331 km (0.097 R)
• M11: 10,379,100 km (0.087 R)
• M12: 10,580,908 km (0.096 R)
• M13: 12,592,850 km (0.077 R)
• M14: 20,028,911 km (0.099 R)
• M15: 21,736,271 km (0.112 R)
• M16: 26,801,057 km (0.115 R)
• M17: 29,136,130 km (0.093 R)
• M18: 29,807,974 km (0.089 R)
• M19: 33,032,407 km (0.12 R)
• M20: 34,803,496 km (0.102 R)
• M21: 35,559,713 km (0.114 R)
• M22: 37,735,614 km (0.099 R)
• M23: 40,163,588 km (0.066 R)
• M24: 40,494,947 km (0.117 R)
• M25: 45,867,754 km (0.071 R)
• M26: 50,339,534 km (0.111 R)
• M27: 56,119,846 km (0.077 R)
• M28: 76,083,233 km (0.099 R)
• M29: 76,845,135 km (0.064 R)
• M30: 82,321,315 km (0.089 R)
• M31: 85,290,982 km (0.119 R)
• M32: 90,019,621 km (0.101 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 395 - 12,280 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit