🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.98

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.58 AU - 0.8 AU

Year: 215 Days

Day: 26.9 Hours

Environment

Temp: 139 °C

Axial Tilt: 33.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 60,925,517 km

• M1: 400,773 km (0.036 R)
• M2: 515,664 km (0.114 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.25

Radius: 1.09

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 1.03 AU - 1.63 AU

Year: 575 Days

Day: 19.2 Hours

Environment

Temp: -38 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.37

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 1.5 AU - 1.84 AU

Year: 809 Days

Day: 24.5 Hours

Environment

Temp: -65 °C

Axial Tilt: 25.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,925,517 km

• M1: 101,876 km (0.062 R)

Asteroid Belt

Center: 4.91 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 8.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.8

Radius: 9.4

Gravity: 2.27 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 7.56 AU - 8.74 AU

Year: 8719 Days

Day: 8.2 Hours

Environment

Temp: -178 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 60,925,517 km

• M1: 118,930 km (0.112 R)
• M2: 478,264 km (0.113 R)
• M3: 898,335 km (0.089 R)
• M4: 1,244,505 km (0.105 R)
• M5: 1,794,426 km (0.035 R)
• M6: 5,764,156 km (0.067 R)
• M7: 6,751,352 km (0.119 R)
• M8: 8,362,671 km (0.119 R)
• M9: 8,978,864 km (0.081 R)
• M10: 10,258,824 km (0.055 R)
• M11: 12,474,518 km (0.112 R)
• M12: 12,822,333 km (0.081 R)
• M13: 17,394,642 km (0.036 R)
• M14: 19,639,956 km (0.055 R)
• M15: 20,383,907 km (0.094 R)
• M16: 21,570,367 km (0.05 R)
• M17: 22,508,196 km (0.091 R)
• M18: 26,778,617 km (0.087 R)

Planet 5 - Ice Giant

Semi-Major Axis: 11.98 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 209

Radius: 5.1

Gravity: 8.04 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 11.7 AU - 12.26 AU

Year: 15539 Days

Day: 21.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 60,925,517 km

• M1: 63,429 km (0.097 R)
• M2: 409,300 km (0.114 R)
• M3: 691,441 km (0.096 R)
• M4: 1,022,501 km (0.094 R)
• M5: 1,792,631 km (0.086 R)
• M6: 2,288,698 km (0.094 R)
• M7: 3,695,666 km (0.039 R)
• M8: 3,898,371 km (0.104 R)
• M9: 4,081,778 km (0.107 R)
• M10: 4,409,696 km (0.083 R)
• M11: 6,946,128 km (0.06 R)
• M12: 8,541,290 km (0.094 R)
• M13: 8,986,643 km (0.108 R)
• M14: 10,415,602 km (0.114 R)
• M15: 10,616,961 km (0.049 R)
• M16: 12,775,658 km (0.043 R)
• M17: 13,122,875 km (0.053 R)
• M18: 14,574,872 km (0.116 R)
• M19: 15,469,617 km (0.105 R)
• M20: 16,197,859 km (0.101 R)
• M21: 16,741,797 km (0.099 R)
• M22: 18,741,172 km (0.11 R)
• M23: 19,798,081 km (0.089 R)
• M24: 20,029,659 km (0.115 R)
• M25: 20,577,038 km (0.091 R)
• M26: 22,445,665 km (0.073 R)
• M27: 24,160,056 km (0.077 R)
• M28: 28,430,627 km (0.1 R)
• M29: 28,725,484 km (0.107 R)
• M30: 37,008,419 km (0.104 R)

Planet 6 - Ice Giant

Semi-Major Axis: 14.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 399.9

Radius: 7.6

Gravity: 6.92 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 12.38 AU - 16.28 AU

Year: 20328 Days

Day: 18.3 Hours

Environment

Temp: -183 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,925,517 km

• M1: 95,144 km (0.118 R)
• M2: 352,602 km (0.093 R)
• M3: 631,453 km (0.118 R)
• M4: 1,121,834 km (0.11 R)
• M5: 1,488,648 km (0.045 R)
• M6: 2,006,855 km (0.108 R)
• M7: 2,990,761 km (0.111 R)
• M8: 3,700,902 km (0.086 R)
• M9: 4,682,563 km (0.089 R)
• M10: 4,987,593 km (0.076 R)
• M11: 8,710,186 km (0.109 R)
• M12: 9,436,484 km (0.056 R)
• M13: 15,917,213 km (0.098 R)
• M14: 16,686,446 km (0.048 R)
• M15: 25,375,389 km (0.052 R)
• M16: 35,229,551 km (0.114 R)
• M17: 43,098,099 km (0.06 R)
• M18: 43,393,555 km (0.076 R)
• M19: 44,891,778 km (0.107 R)
• M20: 49,592,592 km (0.111 R)
• M21: 49,917,070 km (0.07 R)
• M22: 56,180,433 km (0.095 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 214.3

Radius: 4.4

Gravity: 11.07 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 15.37 AU - 18.07 AU

Year: 25620 Days

Day: 19.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 60,925,517 km

• M1: 61,036 km (0.073 R)
• M2: 211,232 km (0.1 R)
• M3: 403,765 km (0.068 R)
• M4: 795,262 km (0.039 R)
• M5: 2,282,265 km (0.06 R)
• M6: 4,827,224 km (0.106 R)
• M7: 7,259,985 km (0.091 R)
• M8: 8,034,602 km (0.087 R)
• M9: 10,404,682 km (0.084 R)
• M10: 16,312,750 km (0.054 R)
• M11: 16,617,481 km (0.063 R)
• M12: 16,771,417 km (0.03 R)
• M13: 21,474,924 km (0.091 R)
• M14: 23,929,675 km (0.11 R)
• M15: 26,251,584 km (0.112 R)
• M16: 36,911,779 km (0.086 R)
• M17: 41,395,227 km (0.094 R)
• M18: 60,560,958 km (0.107 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: 430 - 16,837 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit