🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.73

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.42 AU - 0.68 AU

Year: 268 Days

Day: 22 Hours

Environment

Temp: -127 °C

Axial Tilt: 47.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 30,260,946 km

• M1: 60,587 km (0.083 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.56

Radius: 0.79

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.53 AU - 0.69 AU

Year: 313 Days

Day: 44.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 25.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 316

Radius: 13.8

Gravity: 1.66 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.54 AU - 0.82 AU

Year: 368 Days

Day: 13.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 30,260,946 km

• M1: 171,589 km (0.078 R)
• M2: 733,030 km (0.11 R)
• M3: 2,456,696 km (0.067 R)
• M4: 3,431,626 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 557.7

Radius: 14.9

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.62 AU - 1 AU

Year: 478 Days

Day: 6.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 30,260,946 km

• M1: 185,352 km (0.067 R)
• M2: 719,715 km (0.052 R)
• M3: 1,183,020 km (0.102 R)
• M4: 2,110,976 km (0.063 R)
• M5: 2,732,405 km (0.106 R)
• M6: 3,582,719 km (0.094 R)
• M7: 4,884,071 km (0.086 R)
• M8: 5,594,063 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 720

Radius: 14.7

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.87 AU - 1.37 AU

Year: 778 Days

Day: 12.3 Hours

Environment

Temp: -168 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 30,260,946 km

• M1: 182,809 km (0.087 R)
• M2: 690,693 km (0.083 R)
• M3: 1,289,384 km (0.106 R)
• M4: 2,275,384 km (0.052 R)
• M5: 2,798,079 km (0.103 R)
• M6: 3,401,407 km (0.112 R)
• M7: 4,106,462 km (0.066 R)
• M8: 6,976,198 km (0.091 R)
• M9: 7,474,658 km (0.104 R)
• M10: 7,972,819 km (0.089 R)
• M11: 8,467,688 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.9

Radius: 13.4

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 4.55 AU - 6.07 AU

Year: 8027 Days

Day: 6.2 Hours

Environment

Temp: -227 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 30,260,946 km

• M1: 166,652 km (0.103 R)
• M2: 670,049 km (0.111 R)
• M3: 1,238,072 km (0.088 R)
• M4: 1,738,178 km (0.111 R)
• M5: 2,238,433 km (0.079 R)
• M6: 2,681,093 km (0.113 R)
• M7: 3,652,133 km (0.1 R)
• M8: 4,732,529 km (0.103 R)
• M9: 5,819,357 km (0.09 R)
• M10: 6,738,935 km (0.041 R)
• M11: 7,674,670 km (0.098 R)
• M12: 12,036,046 km (0.107 R)
• M13: 12,850,008 km (0.1 R)
• M14: 13,816,411 km (0.082 R)
• M15: 14,769,798 km (0.099 R)
• M16: 19,684,686 km (0.086 R)
• M17: 22,147,366 km (0.112 R)
• M18: 24,124,452 km (0.083 R)
• M19: 25,330,809 km (0.047 R)
• M20: 27,306,997 km (0.086 R)
• M21: 29,384,163 km (0.115 R)
• M22: 32,383,750 km (0.089 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 270

Radius: 12.5

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 5.13 AU - 5.93 AU

Year: 8531 Days

Day: 9.9 Hours

Environment

Temp: -213 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 30,260,946 km

• M1: 155,432 km (0.114 R)
• M2: 754,272 km (0.117 R)
• M3: 1,235,379 km (0.068 R)
• M4: 2,355,418 km (0.106 R)
• M5: 2,744,822 km (0.079 R)
• M6: 3,548,013 km (0.027 R)
• M7: 4,255,012 km (0.118 R)
• M8: 6,453,203 km (0.076 R)
• M9: 11,319,323 km (0.076 R)
• M10: 13,909,760 km (0.111 R)
• M11: 15,314,184 km (0.105 R)
• M12: 16,140,862 km (0.07 R)
• M13: 19,816,781 km (0.081 R)
• M14: 20,869,801 km (0.079 R)
• M15: 21,886,019 km (0.113 R)
• M16: 24,570,702 km (0.109 R)
• M17: 25,703,607 km (0.11 R)
• M18: 27,726,320 km (0.072 R)
• M19: 29,401,367 km (0.084 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 70.3

Radius: 7.4

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 8.25 AU - 8.33 AU

Year: 15658 Days

Day: 20.4 Hours

Environment

Temp: -227 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 30,260,946 km

• M1: 92,003 km (0.078 R)
• M2: 850,913 km (0.114 R)
• M3: 1,396,646 km (0.103 R)
• M4: 3,366,251 km (0.101 R)
• M5: 3,931,432 km (0.089 R)
• M6: 4,634,542 km (0.104 R)
• M7: 5,562,348 km (0.088 R)
• M8: 6,383,042 km (0.117 R)
• M9: 8,964,054 km (0.098 R)
• M10: 12,119,971 km (0.118 R)
• M11: 18,619,549 km (0.113 R)
• M12: 20,026,966 km (0.117 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: 161 - 14,031 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit