🌌 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: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.48

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.64 AU - 0.68 AU

Year: 341 Days

Day: 46.7 Hours

Environment

Temp: -135 °C

Axial Tilt: 19.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 47,773,505 km

• M1: 55,650 km (0.109 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 11.9

Radius: 13.2

Gravity: 0.07 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.74 AU - 0.86 AU

Year: 455 Days

Day: 9.9 Hours

Environment

Temp: -148 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (2)

Outer Limit: 47,773,505 km

• M1: 167,400 km (0.104 R)
• M2: 1,059,751 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 617.2

Radius: 13.9

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.87 AU - 1.07 AU

Year: 607 Days

Day: 5.6 Hours

Environment

Temp: -152 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,773,505 km

• M1: 172,935 km (0.092 R)
• M2: 826,079 km (0.083 R)
• M3: 1,309,131 km (0.098 R)
• M4: 1,869,076 km (0.059 R)
• M5: 2,310,240 km (0.069 R)
• M6: 3,047,907 km (0.101 R)
• M7: 4,036,001 km (0.107 R)
• M8: 4,865,671 km (0.109 R)
• M9: 5,591,220 km (0.038 R)
• M10: 6,101,648 km (0.092 R)
• M11: 6,743,274 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 800.2

Radius: 13

Gravity: 4.73 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 1.25 AU - 1.83 AU

Year: 1215 Days

Day: 13.9 Hours

Environment

Temp: -178 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 47,773,505 km

• M1: 161,715 km (0.067 R)
• M2: 629,508 km (0.116 R)
• M3: 1,174,792 km (0.114 R)
• M4: 1,626,278 km (0.039 R)
• M5: 2,319,665 km (0.057 R)
• M6: 2,963,384 km (0.068 R)
• M7: 3,472,167 km (0.105 R)
• M8: 3,887,450 km (0.07 R)
• M9: 4,408,200 km (0.111 R)
• M10: 5,873,212 km (0.109 R)
• M11: 7,510,112 km (0.11 R)
• M12: 7,963,244 km (0.108 R)
• M13: 8,749,381 km (0.026 R)
• M14: 10,443,876 km (0.115 R)
• M15: 10,908,228 km (0.071 R)
• M16: 11,351,636 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 668.9

Radius: 11.3

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 2.3 AU - 3.08 AU

Year: 2805 Days

Day: 11.6 Hours

Environment

Temp: -206 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 47,773,505 km

• M1: 140,472 km (0.084 R)
• M2: 496,216 km (0.078 R)
• M3: 1,629,270 km (0.112 R)
• M4: 1,996,982 km (0.075 R)
• M5: 2,595,074 km (0.034 R)
• M6: 3,085,755 km (0.119 R)
• M7: 4,028,222 km (0.057 R)
• M8: 4,446,647 km (0.042 R)
• M9: 5,225,005 km (0.097 R)
• M10: 6,145,929 km (0.1 R)
• M11: 7,141,653 km (0.091 R)
• M12: 8,209,034 km (0.076 R)
• M13: 8,781,096 km (0.078 R)
• M14: 9,451,893 km (0.097 R)
• M15: 14,120,842 km (0.119 R)
• M16: 15,290,698 km (0.105 R)
• M17: 16,261,737 km (0.118 R)
• M18: 19,422,142 km (0.039 R)
• M19: 20,317,485 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 86.2

Radius: 11.2

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 2.7 AU - 2.9 AU

Year: 2979 Days

Day: 5.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 47,773,505 km

• M1: 140,772 km (0.045 R)
• M2: 640,877 km (0.099 R)
• M3: 1,015,770 km (0.069 R)
• M4: 1,390,961 km (0.058 R)
• M5: 1,869,973 km (0.077 R)
• M6: 2,516,087 km (0.103 R)
• M7: 3,043,419 km (0.087 R)
• M8: 3,523,329 km (0.093 R)
• M9: 4,086,266 km (0.042 R)
• M10: 5,392,704 km (0.085 R)
• M11: 5,969,853 km (0.099 R)
• M12: 6,496,886 km (0.108 R)
• M13: 7,544,071 km (0.114 R)
• M14: 10,399,894 km (0.105 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75.4

Radius: 9.6

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 2.36 AU - 3.4 AU

Year: 3108 Days

Day: 5.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 47,773,505 km

• M1: 119,379 km (0.119 R)
• M2: 761,603 km (0.095 R)
• M3: 1,088,025 km (0.075 R)
• M4: 1,477,279 km (0.104 R)
• M5: 1,806,095 km (0.103 R)
• M6: 2,472,853 km (0.085 R)
• M7: 2,774,741 km (0.107 R)
• M8: 4,273,712 km (0.111 R)
• M9: 4,585,923 km (0.112 R)
• M10: 5,494,431 km (0.106 R)
• M11: 6,518,428 km (0.083 R)
• M12: 7,489,767 km (0.068 R)
• M13: 8,500,600 km (0.059 R)
• M14: 8,968,692 km (0.11 R)
• M15: 9,541,352 km (0.078 R)
• M16: 10,383,738 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 234

Radius: 7.4

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 7.01 AU - 10.89 AU

Year: 17024 Days

Day: 21.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 47,773,505 km

• M1: 204,201 km (0.067 R)
• M2: 793,168 km (0.107 R)
• M3: 2,279,722 km (0.068 R)
• M4: 13,368,664 km (0.112 R)
• M5: 16,167,939 km (0.072 R)
• M6: 17,667,509 km (0.092 R)
• M7: 19,024,660 km (0.061 R)
• M8: 21,271,920 km (0.082 R)
• M9: 26,963,371 km (0.082 R)
• M10: 29,789,723 km (0.05 R)
• M11: 32,144,543 km (0.066 R)
• M12: 35,669,219 km (0.105 R)
• M13: 38,692,891 km (0.096 R)
• M14: 41,883,365 km (0.117 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 225 - 16,908 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit