🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.13

Radius: 1.05

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.46 AU - 0.58 AU

Year: 242 Days

Day: 41 Hours

Environment

Temp: -126 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 924.2

Radius: 9.3

Gravity: 10.69 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.64 AU - 0.86 AU

Year: 419 Days

Day: 14.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 27,393,650 km

• M1: 116,238 km (0.089 R)
• M2: 423,512 km (0.118 R)
• M3: 730,636 km (0.07 R)
• M4: 1,444,667 km (0.095 R)
• M5: 2,296,776 km (0.072 R)
• M6: 2,764,120 km (0.041 R)
• M7: 3,152,476 km (0.117 R)
• M8: 3,744,285 km (0.117 R)
• M9: 4,972,184 km (0.047 R)
• M10: 5,721,969 km (0.079 R)
• M11: 6,299,716 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.6

Radius: 13.9

Gravity: 4.41 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.83 AU - 0.89 AU

Year: 515 Days

Day: 11.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 27,393,650 km

• M1: 172,935 km (0.075 R)
• M2: 649,105 km (0.079 R)
• M3: 1,107,174 km (0.068 R)
• M4: 1,699,133 km (0.054 R)
• M5: 2,643,245 km (0.111 R)
• M6: 3,604,860 km (0.069 R)
• M7: 4,095,840 km (0.098 R)
• M8: 4,662,517 km (0.092 R)
• M9: 5,315,362 km (0.068 R)
• M10: 6,010,094 km (0.1 R)
• M11: 6,486,713 km (0.054 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.7

Radius: 11

Gravity: 0.46 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.81 AU - 1.01 AU

Year: 561 Days

Day: 14 Hours

Environment

Temp: -155 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 27,393,650 km

• M1: 136,732 km (0.108 R)
• M2: 489,035 km (0.103 R)
• M3: 842,535 km (0.102 R)
• M4: 1,657,694 km (0.063 R)
• M5: 2,450,563 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 931

Radius: 13.1

Gravity: 5.43 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.88 AU - 1.08 AU

Year: 626 Days

Day: 8.4 Hours

Environment

Temp: -159 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,393,650 km

• M1: 164,258 km (0.05 R)
• M2: 617,091 km (0.093 R)
• M3: 1,189,303 km (0.071 R)
• M4: 1,765,105 km (0.1 R)
• M5: 2,315,476 km (0.104 R)
• M6: 3,599,474 km (0.087 R)
• M7: 4,462,504 km (0.112 R)
• M8: 5,241,461 km (0.056 R)
• M9: 5,797,067 km (0.114 R)
• M10: 6,412,214 km (0.083 R)
• M11: 7,026,911 km (0.083 R)
• M12: 8,349,805 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.7

Radius: 12.6

Gravity: 4.01 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 1.87 AU - 2.55 AU

Year: 2121 Days

Day: 9.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 27,393,650 km

• M1: 161,267 km (0.064 R)
• M2: 681,717 km (0.105 R)
• M3: 1,729,800 km (0.03 R)
• M4: 2,143,588 km (0.113 R)
• M5: 3,051,198 km (0.1 R)
• M6: 3,806,518 km (0.064 R)
• M7: 4,219,408 km (0.07 R)
• M8: 4,745,992 km (0.095 R)
• M9: 5,689,656 km (0.065 R)
• M10: 7,799,135 km (0.069 R)
• M11: 8,532,315 km (0.052 R)
• M12: 9,855,957 km (0.102 R)
• M13: 10,530,793 km (0.035 R)
• M14: 11,775,896 km (0.082 R)
• M15: 12,332,998 km (0.077 R)
• M16: 13,759,115 km (0.085 R)
• M17: 14,693,353 km (0.102 R)
• M18: 15,152,768 km (0.047 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 545.9

Radius: 12.6

Gravity: 3.44 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 3.17 AU - 4.49 AU

Year: 4840 Days

Day: 14.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 27,393,650 km

• M1: 157,527 km (0.117 R)
• M2: 635,342 km (0.119 R)
• M3: 1,109,119 km (0.076 R)
• M4: 1,547,590 km (0.086 R)
• M5: 1,992,943 km (0.074 R)
• M6: 3,380,762 km (0.039 R)
• M7: 3,812,352 km (0.058 R)
• M8: 4,688,248 km (0.048 R)
• M9: 5,147,812 km (0.101 R)
• M10: 8,570,612 km (0.069 R)
• M11: 9,143,272 km (0.059 R)
• M12: 10,665,431 km (0.063 R)
• M13: 11,283,569 km (0.076 R)
• M14: 11,739,394 km (0.099 R)
• M15: 13,585,581 km (0.118 R)
• M16: 15,010,052 km (0.088 R)
• M17: 17,723,757 km (0.049 R)
• M18: 21,643,670 km (0.029 R)
• M19: 26,186,210 km (0.075 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 313 - 11,186 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit