🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.23

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.63 AU - 0.71 AU

Year: 354 Days

Day: 16.1 Hours

Environment

Temp: -127 °C

Axial Tilt: 2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243.6

Radius: 13.8

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.8 AU - 0.84 AU

Year: 479 Days

Day: 11.7 Hours

Environment

Temp: -153 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 53,071,085 km

• M1: 173,234 km (0.112 R)
• M2: 700,716 km (0.096 R)
• M3: 1,218,923 km (0.115 R)
• M4: 1,862,194 km (0.108 R)
• M5: 2,453,704 km (0.091 R)
• M6: 3,616,229 km (0.04 R)
• M7: 4,379,178 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 135.8

Radius: 8.7

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 1.14 AU - 1.18 AU

Year: 807 Days

Day: 5.4 Hours

Environment

Temp: -165 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 53,071,085 km

• M1: 110,254 km (0.102 R)
• M2: 411,245 km (0.107 R)
• M3: 746,942 km (0.034 R)
• M4: 1,044,642 km (0.107 R)
• M5: 1,326,036 km (0.11 R)
• M6: 1,736,233 km (0.093 R)
• M7: 2,039,318 km (0.105 R)
• M8: 2,422,887 km (0.09 R)
• M9: 2,813,786 km (0.095 R)
• M10: 3,290,704 km (0.106 R)
• M11: 3,638,071 km (0.079 R)
• M12: 4,074,148 km (0.089 R)
• M13: 4,558,696 km (0.096 R)
• M14: 4,917,581 km (0.085 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 742.9

Radius: 13.6

Gravity: 4.02 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 1.75 AU - 2.05 AU

Year: 1691 Days

Day: 14.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 53,071,085 km

• M1: 169,644 km (0.053 R)
• M2: 621,430 km (0.095 R)
• M3: 2,526,858 km (0.081 R)
• M4: 2,955,904 km (0.102 R)
• M5: 3,615,930 km (0.077 R)
• M6: 4,707,995 km (0.09 R)
• M7: 5,211,092 km (0.098 R)
• M8: 6,009,496 km (0.081 R)
• M9: 6,628,532 km (0.117 R)
• M10: 7,262,528 km (0.055 R)
• M11: 8,652,442 km (0.064 R)
• M12: 11,024,166 km (0.096 R)
• M13: 11,650,981 km (0.103 R)
• M14: 12,458,062 km (0.091 R)
• M15: 13,138,433 km (0.112 R)

Planet 5 - Ice Giant

Semi-Major Axis: 10.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 193.2

Radius: 3.4

Gravity: 16.71 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 9.88 AU - 11.1 AU

Year: 21937 Days

Day: 18.6 Hours

Environment

Temp: -237 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 53,071,085 km

• M1: 42,336 km (0.094 R)
• M2: 429,495 km (0.109 R)
• M3: 606,919 km (0.109 R)
• M4: 1,040,304 km (0.062 R)
• M5: 1,308,981 km (0.105 R)
• M6: 2,257,881 km (0.101 R)
• M7: 3,617,426 km (0.112 R)
• M8: 4,287,924 km (0.094 R)
• M9: 4,874,497 km (0.104 R)
• M10: 5,761,463 km (0.11 R)
• M11: 6,790,846 km (0.106 R)
• M12: 11,212,510 km (0.107 R)
• M13: 11,902,156 km (0.113 R)
• M14: 20,502,239 km (0.111 R)
• M15: 34,363,229 km (0.114 R)
• M16: 39,740,375 km (0.084 R)
• M17: 41,740,499 km (0.053 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 235 - 11,011 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit