🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.61 AU - 0.69 AU

Year: 338 Days

Day: 16.3 Hours

Environment

Temp: -138 °C

Axial Tilt: 11 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 85,063,974 km

• M1: 453,581 km (0.115 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.96

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.52 AU - 0.82 AU

Year: 354 Days

Day: 13.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 39.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 860.1

Radius: 10.5

Gravity: 7.8 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.81 AU - 0.87 AU

Year: 497 Days

Day: 14.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 85,063,974 km

• M1: 131,197 km (0.085 R)
• M2: 498,161 km (0.063 R)
• M3: 1,084,136 km (0.096 R)
• M4: 1,846,038 km (0.118 R)
• M5: 2,221,828 km (0.118 R)
• M6: 2,712,658 km (0.045 R)
• M7: 3,803,526 km (0.117 R)
• M8: 4,153,435 km (0.094 R)
• M9: 4,726,545 km (0.104 R)
• M10: 5,098,595 km (0.032 R)
• M11: 5,938,587 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 602.4

Radius: 14.2

Gravity: 2.99 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.78 AU - 1.2 AU

Year: 636 Days

Day: 12.8 Hours

Environment

Temp: -160 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 85,063,974 km

• M1: 176,525 km (0.033 R)
• M2: 623,374 km (0.105 R)
• M3: 1,192,295 km (0.083 R)
• M4: 1,928,317 km (0.083 R)
• M5: 2,502,024 km (0.086 R)
• M6: 2,954,408 km (0.088 R)
• M7: 3,539,186 km (0.069 R)
• M8: 3,985,437 km (0.11 R)
• M9: 4,469,536 km (0.07 R)
• M10: 5,364,729 km (0.079 R)
• M11: 6,183,478 km (0.106 R)
• M12: 7,105,151 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 271.6

Radius: 14

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 5.06 AU - 5.5 AU

Year: 7834 Days

Day: 5.9 Hours

Environment

Temp: -223 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 85,063,974 km

• M1: 174,132 km (0.071 R)
• M2: 667,356 km (0.096 R)
• M3: 1,312,721 km (0.044 R)
• M4: 1,819,409 km (0.114 R)
• M5: 3,547,115 km (0.09 R)
• M6: 4,910,999 km (0.07 R)
• M7: 5,511,485 km (0.057 R)
• M8: 6,536,081 km (0.087 R)
• M9: 9,041,995 km (0.05 R)
• M10: 10,466,166 km (0.118 R)
• M11: 15,292,194 km (0.075 R)
• M12: 15,867,697 km (0.099 R)
• M13: 17,432,041 km (0.098 R)
• M14: 25,923,516 km (0.078 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 88.7

Radius: 3.1

Gravity: 9.23 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 7.7 AU - 10.92 AU

Year: 18342 Days

Day: 21 Hours

Environment

Temp: -219 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 85,063,974 km

• M1: 38,596 km (0.085 R)
• M2: 626,366 km (0.081 R)
• M3: 870,061 km (0.056 R)
• M4: 1,078,601 km (0.05 R)
• M5: 1,832,724 km (0.071 R)
• M6: 2,944,684 km (0.114 R)
• M7: 3,759,095 km (0.099 R)
• M8: 4,308,867 km (0.091 R)
• M9: 4,575,750 km (0.09 R)
• M10: 7,918,066 km (0.059 R)
• M11: 8,985,596 km (0.099 R)
• M12: 19,257,136 km (0.076 R)
• M13: 19,400,001 km (0.086 R)
• M14: 19,832,938 km (0.114 R)
• M15: 20,125,102 km (0.104 R)
• M16: 21,398,928 km (0.059 R)
• M17: 23,858,168 km (0.079 R)
• M18: 25,454,975 km (0.117 R)
• M19: 27,481,578 km (0.116 R)

Planet 7 - Ice Giant

Semi-Major Axis: 11.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 655.4

Radius: 6.7

Gravity: 14.6 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 8.88 AU - 13.5 AU

Year: 24169 Days

Day: 24.8 Hours

Environment

Temp: -225 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 85,063,974 km

• M1: 83,326 km (0.104 R)
• M2: 604,076 km (0.113 R)
• M3: 1,064,239 km (0.104 R)
• M4: 1,287,738 km (0.108 R)
• M5: 2,287,202 km (0.115 R)
• M6: 2,664,338 km (0.087 R)
• M7: 3,394,076 km (0.084 R)
• M8: 3,917,519 km (0.119 R)
• M9: 6,934,609 km (0.104 R)
• M10: 7,673,324 km (0.026 R)
• M11: 9,540,305 km (0.101 R)
• M12: 10,898,205 km (0.067 R)
• M13: 11,356,124 km (0.069 R)
• M14: 12,806,775 km (0.117 R)
• M15: 16,154,775 km (0.065 R)
• M16: 17,009,427 km (0.088 R)
• M17: 17,536,610 km (0.116 R)
• M18: 25,528,129 km (0.095 R)
• M19: 28,366,000 km (0.101 R)
• M20: 32,200,343 km (0.109 R)
• M21: 33,142,211 km (0.096 R)
• M22: 34,380,134 km (0.082 R)
• M23: 34,659,283 km (0.117 R)
• M24: 38,578,299 km (0.077 R)
• M25: 41,034,696 km (0.107 R)
• M26: 42,461,261 km (0.12 R)
• M27: 42,944,014 km (0.095 R)
• M28: 53,385,047 km (0.089 R)
• M29: 55,084,030 km (0.051 R)
• M30: 55,850,570 km (0.092 R)
• M31: 58,589,557 km (0.026 R)
• M32: 64,757,777 km (0.069 R)
• M33: 68,438,034 km (0.063 R)
• M34: 71,344,870 km (0.104 R)
• M35: 74,332,788 km (0.109 R)
• M36: 76,212,486 km (0.1 R)
• M37: 82,540,027 km (0.084 R)
• M38: 84,555,110 km (0.112 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 292 - 13,764 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit