🌌 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: 0.7 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.63

Radius: 1.85

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.6 AU - 0.8 AU

Year: 217 Days

Day: 35.4 Hours

Environment

Temp: 167 °C

Axial Tilt: 24.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.12 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.29

Radius: 1.39

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.89 AU - 1.35 AU

Year: 440 Days

Day: 12.6 Hours

Environment

Temp: 7 °C

Axial Tilt: 33.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.21

Radius: 1.37

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.48 AU - 2.08 AU

Year: 881 Days

Day: 46.8 Hours

Environment

Temp: -68 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 34,691,579 km

• M1: 838,197 km (0.097 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.43

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.89 AU - 2.05 AU

Year: 1025 Days

Day: 26.7 Hours

Environment

Temp: -69 °C

Axial Tilt: 10 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.11

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 2.31 AU - 3.65 AU

Year: 1908 Days

Day: 33.7 Hours

Environment

Temp: -98 °C

Axial Tilt: 6.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 2.78 AU - 3.32 AU

Year: 1975 Days

Day: 45.4 Hours

Environment

Temp: -99 °C

Axial Tilt: 12.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.01 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 4.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 262.5

Radius: 9.2

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 4.38 AU - 5.56 AU

Year: 4109 Days

Day: 12.8 Hours

Environment

Temp: -134 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 34,691,579 km

• M1: 114,442 km (0.084 R)
• M2: 406,158 km (0.12 R)
• M3: 706,551 km (0.109 R)
• M4: 1,481,617 km (0.115 R)
• M5: 2,696,950 km (0.115 R)
• M6: 3,331,844 km (0.069 R)
• M7: 3,638,220 km (0.077 R)
• M8: 4,629,306 km (0.077 R)
• M9: 4,943,162 km (0.072 R)
• M10: 5,489,793 km (0.081 R)
• M11: 6,289,693 km (0.074 R)
• M12: 9,157,035 km (0.109 R)
• M13: 9,474,033 km (0.119 R)
• M14: 11,012,348 km (0.077 R)
• M15: 11,330,992 km (0.037 R)
• M16: 12,028,417 km (0.1 R)
• M17: 13,328,572 km (0.076 R)
• M18: 14,816,173 km (0.108 R)
• M19: 15,650,032 km (0.1 R)
• M20: 16,411,335 km (0.114 R)
• M21: 17,038,150 km (0.104 R)
• M22: 18,173,299 km (0.107 R)
• M23: 19,185,628 km (0.094 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.9

Radius: 12.3

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 5.2 AU - 7.88 AU

Year: 6203 Days

Day: 10.4 Hours

Environment

Temp: -161 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 34,691,579 km

• M1: 153,039 km (0.087 R)
• M2: 862,881 km (0.05 R)
• M3: 1,291,329 km (0.092 R)
• M4: 2,100,952 km (0.103 R)
• M5: 2,556,628 km (0.055 R)
• M6: 4,114,689 km (0.099 R)
• M7: 5,370,264 km (0.103 R)
• M8: 5,916,297 km (0.086 R)
• M9: 8,265,582 km (0.111 R)
• M10: 10,128,075 km (0.089 R)
• M11: 11,398,311 km (0.109 R)
• M12: 15,518,386 km (0.09 R)
• M13: 16,122,611 km (0.085 R)
• M14: 16,914,433 km (0.104 R)
• M15: 18,150,410 km (0.109 R)
• M16: 18,636,753 km (0.11 R)
• M17: 20,019,486 km (0.119 R)
• M18: 20,735,910 km (0.066 R)
• M19: 21,876,594 km (0.111 R)
• M20: 22,776,874 km (0.077 R)
• M21: 23,414,460 km (0.114 R)

Planet 9 - Gas Giant

Semi-Major Axis: 6.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 616.7

Radius: 15

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 6.06 AU - 7.42 AU

Year: 6489 Days

Day: 12.4 Hours

Environment

Temp: -162 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 34,691,579 km

• M1: 186,549 km (0.116 R)
• M2: 681,717 km (0.054 R)
• M3: 1,214,436 km (0.051 R)
• M4: 1,783,057 km (0.057 R)
• M5: 2,478,687 km (0.075 R)
• M6: 3,479,796 km (0.096 R)
• M7: 3,978,705 km (0.045 R)
• M8: 4,577,844 km (0.086 R)
• M9: 7,639,664 km (0.092 R)
• M10: 8,814,456 km (0.112 R)
• M11: 10,751,300 km (0.08 R)
• M12: 12,021,834 km (0.111 R)
• M13: 12,746,187 km (0.091 R)
• M14: 13,943,270 km (0.093 R)
• M15: 15,095,472 km (0.047 R)
• M16: 15,695,061 km (0.079 R)
• M17: 16,310,357 km (0.107 R)
• M18: 21,526,834 km (0.11 R)
• M19: 23,381,549 km (0.116 R)
• M20: 24,347,951 km (0.071 R)
• M21: 25,173,432 km (0.106 R)
• M22: 27,318,965 km (0.097 R)
• M23: 27,940,843 km (0.093 R)
• M24: 29,770,275 km (0.076 R)
• M25: 34,279,155 km (0.104 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: 250 - 17,134 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit