🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.41

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.52 AU - 0.62 AU

Year: 187 Days

Day: 46.5 Hours

Environment

Temp: 31 °C

Axial Tilt: 148.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 64,440,076 km

• M1: 250,726 km (0.109 R)
• M2: 280,197 km (0.083 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.25

Radius: 0.57

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.77 AU - 0.89 AU

Year: 328 Days

Day: 44.4 Hours

Environment

Temp: -27 °C

Axial Tilt: 85.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.16

Radius: 1.58

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.06 AU - 1.06 AU

Year: 473 Days

Day: 14.6 Hours

Environment

Temp: -53 °C

Axial Tilt: 10.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,440,076 km

• M1: 82,728 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 917.8

Radius: 10.7

Gravity: 8.02 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 3.53 AU - 3.83 AU

Year: 3060 Days

Day: 11.8 Hours

Environment

Temp: -146 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 64,440,076 km

• M1: 135,835 km (0.065 R)
• M2: 479,760 km (0.115 R)
• M3: 893,249 km (0.053 R)
• M4: 1,361,490 km (0.099 R)
• M5: 1,952,103 km (0.104 R)
• M6: 2,351,379 km (0.104 R)
• M7: 2,739,287 km (0.102 R)
• M8: 3,335,883 km (0.093 R)
• M9: 4,212,526 km (0.107 R)
• M10: 5,084,084 km (0.099 R)
• M11: 5,792,878 km (0.068 R)
• M12: 6,686,426 km (0.105 R)
• M13: 8,178,516 km (0.08 R)
• M14: 9,960,675 km (0.069 R)
• M15: 11,720,694 km (0.117 R)
• M16: 13,338,595 km (0.069 R)
• M17: 13,777,665 km (0.119 R)
• M18: 17,069,416 km (0.117 R)
• M19: 19,203,879 km (0.091 R)
• M20: 21,377,835 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 211.9

Radius: 13.8

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 7.29 AU - 7.97 AU

Year: 9136 Days

Day: 5.8 Hours

Environment

Temp: -197 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 64,440,076 km

• M1: 171,589 km (0.104 R)
• M2: 1,032,674 km (0.044 R)
• M3: 1,876,705 km (0.065 R)
• M4: 2,937,354 km (0.051 R)
• M5: 3,988,279 km (0.101 R)
• M6: 4,950,642 km (0.12 R)
• M7: 5,645,674 km (0.113 R)
• M8: 6,727,267 km (0.079 R)
• M9: 7,265,819 km (0.055 R)
• M10: 8,583,776 km (0.03 R)
• M11: 9,177,829 km (0.115 R)
• M12: 14,853,124 km (0.107 R)
• M13: 15,594,680 km (0.103 R)
• M14: 17,213,778 km (0.082 R)
• M15: 17,904,621 km (0.074 R)
• M16: 21,209,089 km (0.035 R)
• M17: 24,900,416 km (0.116 R)
• M18: 26,606,280 km (0.116 R)
• M19: 29,264,934 km (0.101 R)

Planet 6 - Ice Giant

Semi-Major Axis: 11.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 169.4

Radius: 7.5

Gravity: 3.01 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 9.49 AU - 14.03 AU

Year: 17481 Days

Day: 23.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 64,440,076 km

• M1: 100,530 km (0.057 R)
• M2: 867,817 km (0.088 R)
• M3: 1,866,832 km (0.112 R)
• M4: 3,229,668 km (0.109 R)
• M5: 4,911,448 km (0.103 R)
• M6: 8,593,799 km (0.094 R)
• M7: 10,832,232 km (0.115 R)
• M8: 12,505,185 km (0.083 R)
• M9: 19,293,787 km (0.098 R)
• M10: 20,216,507 km (0.111 R)
• M11: 24,202,841 km (0.116 R)
• M12: 27,038,319 km (0.054 R)
• M13: 37,093,989 km (0.072 R)
• M14: 40,349,837 km (0.107 R)
• M15: 42,752,079 km (0.071 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 280

Radius: 6.8

Gravity: 6.06 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 12.1 AU - 17.26 AU

Year: 24381 Days

Day: 21.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 64,440,076 km

• M1: 107,561 km (0.119 R)
• M2: 429,495 km (0.032 R)
• M3: 3,505,527 km (0.089 R)
• M4: 4,081,030 km (0.115 R)
• M5: 5,201,219 km (0.115 R)
• M6: 8,128,999 km (0.068 R)
• M7: 12,191,927 km (0.09 R)
• M8: 15,054,183 km (0.063 R)
• M9: 17,353,503 km (0.107 R)
• M10: 18,169,260 km (0.05 R)
• M11: 19,527,160 km (0.076 R)
• M12: 20,769,720 km (0.103 R)
• M13: 22,827,438 km (0.117 R)
• M14: 26,057,406 km (0.12 R)
• M15: 29,009,421 km (0.082 R)
• M16: 33,158,368 km (0.108 R)
• M17: 34,285,738 km (0.074 R)
• M18: 34,923,025 km (0.107 R)
• M19: 35,698,091 km (0.112 R)
• M20: 38,364,673 km (0.078 R)
• M21: 40,026,855 km (0.057 R)
• M22: 40,308,398 km (0.089 R)
• M23: 52,688,819 km (0.093 R)
• M24: 56,313,426 km (0.105 R)
• M25: 59,184,209 km (0.11 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 265 - 16,285 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit