🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.55 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.6

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.99 AU - 1.21 AU

Year: 417 Days

Day: 39.4 Hours

Environment

Temp: 7 °C

Axial Tilt: 161 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.31 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.56

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 1.21 AU - 1.41 AU

Year: 542 Days

Day: 13.6 Hours

Environment

Temp: -4 °C

Axial Tilt: 41.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.45

Radius: 0.73

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 1.84 AU - 2.76 AU

Year: 1261 Days

Day: 12.3 Hours

Environment

Temp: -74 °C

Axial Tilt: 8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 79,737,666 km

• M1: 195,225 km (0.059 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.47

Radius: 1.17

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 2.15 AU - 3.59 AU

Year: 1758 Days

Day: 42.2 Hours

Environment

Temp: -100 °C

Axial Tilt: 23.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.91 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.79

Radius: 1.26

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 2.62 AU - 3.2 AU

Year: 1795 Days

Day: 17 Hours

Environment

Temp: -100 °C

Axial Tilt: 29.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 7.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 985.8

Radius: 11.6

Gravity: 7.33 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 7.48 AU - 8.42 AU

Year: 8107 Days

Day: 7.9 Hours

Environment

Temp: -156 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 79,737,666 km

• M1: 144,212 km (0.116 R)
• M2: 560,244 km (0.104 R)
• M3: 1,141,133 km (0.114 R)
• M4: 1,724,863 km (0.054 R)
• M5: 2,172,610 km (0.111 R)
• M6: 3,057,032 km (0.097 R)
• M7: 3,545,470 km (0.096 R)
• M8: 4,361,825 km (0.093 R)
• M9: 5,045,338 km (0.108 R)
• M10: 6,739,534 km (0.109 R)
• M11: 7,990,920 km (0.044 R)
• M12: 9,248,888 km (0.115 R)
• M13: 11,541,027 km (0.12 R)
• M14: 18,768,998 km (0.116 R)
• M15: 19,932,570 km (0.065 R)
• M16: 23,095,518 km (0.106 R)
• M17: 24,704,443 km (0.118 R)
• M18: 25,630,005 km (0.054 R)
• M19: 28,044,963 km (0.079 R)
• M20: 29,564,578 km (0.103 R)
• M21: 31,352,423 km (0.113 R)
• M22: 33,884,666 km (0.05 R)
• M23: 36,907,889 km (0.114 R)
• M24: 37,873,244 km (0.118 R)
• M25: 39,228,002 km (0.12 R)
• M26: 40,360,159 km (0.12 R)
• M27: 40,870,288 km (0.112 R)
• M28: 41,384,605 km (0.068 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 638.6

Radius: 12.4

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 7.55 AU - 8.35 AU

Year: 8107 Days

Day: 5.9 Hours

Environment

Temp: -167 °C

Axial Tilt: 117.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 79,737,666 km

• M1: 154,983 km (0.093 R)
• M2: 818,749 km (0.103 R)
• M3: 1,421,778 km (0.09 R)
• M4: 2,292,887 km (0.104 R)
• M5: 3,632,535 km (0.116 R)
• M6: 4,528,178 km (0.077 R)
• M7: 7,276,590 km (0.097 R)
• M8: 9,179,774 km (0.097 R)
• M9: 10,440,735 km (0.053 R)
• M10: 12,850,307 km (0.064 R)
• M11: 13,246,891 km (0.118 R)
• M12: 18,027,890 km (0.084 R)
• M13: 22,271,084 km (0.096 R)
• M14: 24,106,350 km (0.095 R)
• M15: 27,510,450 km (0.08 R)
• M16: 28,265,919 km (0.103 R)
• M17: 28,745,231 km (0.104 R)
• M18: 30,918,290 km (0.034 R)
• M19: 34,163,217 km (0.057 R)
• M20: 39,030,832 km (0.061 R)
• M21: 39,984,818 km (0.079 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 569.2

Radius: 7.7

Gravity: 9.6 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 12.3 AU - 20.06 AU

Year: 23537 Days

Day: 22.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 79,737,666 km

• M1: 229,932 km (0.102 R)
• M2: 943,813 km (0.068 R)
• M3: 1,825,393 km (0.104 R)
• M4: 2,355,418 km (0.095 R)
• M5: 4,465,796 km (0.034 R)
• M6: 6,038,518 km (0.119 R)
• M7: 8,739,358 km (0.105 R)
• M8: 13,784,546 km (0.108 R)
• M9: 16,535,801 km (0.116 R)
• M10: 21,268,329 km (0.074 R)
• M11: 22,068,528 km (0.081 R)
• M12: 28,002,477 km (0.026 R)
• M13: 28,360,316 km (0.048 R)
• M14: 36,313,387 km (0.108 R)
• M15: 42,577,648 km (0.107 R)
• M16: 51,106,672 km (0.101 R)
• M17: 52,721,282 km (0.086 R)
• M18: 53,449,674 km (0.094 R)
• M19: 56,810,539 km (0.074 R)
• M20: 69,027,749 km (0.12 R)
• M21: 73,685,778 km (0.108 R)

Kuiper Belt

Range: 30.3 - 59.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 530 - 16,620 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit