🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.14

Radius: 1.77

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.43 AU - 0.59 AU

Year: 235 Days

Day: 19.3 Hours

Environment

Temp: -108 °C

Axial Tilt: 10.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.59

Radius: 1.46

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.53 AU - 0.67 AU

Year: 300 Days

Day: 30.3 Hours

Environment

Temp: -136 °C

Axial Tilt: 32.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.9

Radius: 1.72

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.59 AU - 0.73 AU

Year: 346 Days

Day: 37.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 26.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 359.6

Radius: 13.1

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.92 AU - 1.16 AU

Year: 685 Days

Day: 6.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 72,889,270 km

• M1: 162,912 km (0.077 R)
• M2: 575,802 km (0.074 R)
• M3: 1,485,208 km (0.043 R)
• M4: 2,052,034 km (0.051 R)
• M5: 3,088,448 km (0.08 R)
• M6: 4,134,137 km (0.077 R)
• M7: 4,808,524 km (0.07 R)
• M8: 5,237,870 km (0.039 R)
• M9: 6,101,200 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811.4

Radius: 13.2

Gravity: 4.66 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 2.53 AU - 3.41 AU

Year: 3305 Days

Day: 9 Hours

Environment

Temp: -196 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 72,889,270 km

• M1: 164,408 km (0.084 R)
• M2: 704,157 km (0.065 R)
• M3: 1,464,713 km (0.09 R)
• M4: 1,999,525 km (0.074 R)
• M5: 3,049,403 km (0.089 R)
• M6: 3,491,465 km (0.071 R)
• M7: 4,347,613 km (0.042 R)
• M8: 5,522,705 km (0.09 R)
• M9: 6,014,582 km (0.072 R)
• M10: 7,735,257 km (0.11 R)
• M11: 8,352,498 km (0.074 R)
• M12: 10,120,446 km (0.094 R)
• M13: 10,609,331 km (0.062 R)
• M14: 12,171,582 km (0.115 R)
• M15: 14,951,410 km (0.115 R)
• M16: 16,019,987 km (0.092 R)
• M17: 17,081,683 km (0.092 R)
• M18: 17,775,967 km (0.115 R)
• M19: 19,657,160 km (0.089 R)
• M20: 20,227,278 km (0.117 R)
• M21: 21,268,180 km (0.101 R)
• M22: 22,481,568 km (0.089 R)
• M23: 23,598,466 km (0.079 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 24

Radius: 7.5

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 6.95 AU - 7.25 AU

Year: 12215 Days

Day: 16.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 72,889,270 km

• M1: 93,199 km (0.109 R)
• M2: 1,234,332 km (0.094 R)
• M3: 1,862,942 km (0.109 R)
• M4: 2,348,836 km (0.077 R)
• M5: 4,488,086 km (0.1 R)
• M6: 5,012,426 km (0.119 R)
• M7: 13,396,789 km (0.073 R)
• M8: 13,707,204 km (0.113 R)
• M9: 14,949,614 km (0.102 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 954.2

Radius: 3.7

Gravity: 69.7 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 7.61 AU - 9.31 AU

Year: 15888 Days

Day: 16.9 Hours

Environment

Temp: -223 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 72,889,270 km

• M1: 46,076 km (0.116 R)
• M2: 202,406 km (0.109 R)
• M3: 403,914 km (0.07 R)
• M4: 720,613 km (0.079 R)
• M5: 842,984 km (0.111 R)
• M6: 979,417 km (0.084 R)
• M7: 1,130,362 km (0.115 R)
• M8: 1,993,242 km (0.077 R)
• M9: 3,360,267 km (0.105 R)
• M10: 3,646,747 km (0.11 R)
• M11: 5,214,832 km (0.108 R)
• M12: 5,404,373 km (0.103 R)
• M13: 6,998,488 km (0.091 R)
• M14: 7,852,691 km (0.082 R)
• M15: 11,263,224 km (0.085 R)
• M16: 12,566,221 km (0.076 R)
• M17: 12,907,155 km (0.07 R)
• M18: 14,480,326 km (0.077 R)
• M19: 18,001,261 km (0.081 R)
• M20: 18,785,603 km (0.113 R)
• M21: 21,954,535 km (0.061 R)
• M22: 22,151,406 km (0.097 R)
• M23: 23,356,865 km (0.091 R)
• M24: 24,079,872 km (0.068 R)
• M25: 28,383,354 km (0.094 R)
• M26: 29,206,291 km (0.113 R)
• M27: 29,683,658 km (0.117 R)
• M28: 33,171,981 km (0.117 R)
• M29: 39,916,302 km (0.111 R)
• M30: 40,062,759 km (0.118 R)
• M31: 40,356,569 km (0.113 R)
• M32: 41,396,424 km (0.045 R)
• M33: 41,847,611 km (0.08 R)
• M34: 52,619,555 km (0.079 R)
• M35: 53,681,550 km (0.108 R)
• M36: 62,500,046 km (0.095 R)
• M37: 67,769,481 km (0.113 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 555 - 16,279 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit