🌌 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: 3.93

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.46 AU - 0.64 AU

Year: 263 Days

Day: 13.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 36.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 92,906,909 km

• M1: 547,379 km (0.086 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 647.2

Radius: 12.7

Gravity: 4.01 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.66 AU - 0.72 AU

Year: 370 Days

Day: 13.2 Hours

Environment

Temp: -139 °C

Axial Tilt: 42.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 92,906,909 km

• M1: 157,975 km (0.116 R)
• M2: 677,080 km (0.077 R)
• M3: 1,100,891 km (0.057 R)
• M4: 1,688,212 km (0.066 R)
• M5: 2,128,479 km (0.07 R)
• M6: 2,561,714 km (0.085 R)
• M7: 3,106,849 km (0.079 R)
• M8: 4,076,542 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 228.2

Radius: 10

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.74 AU - 1.18 AU

Year: 607 Days

Day: 11.1 Hours

Environment

Temp: -159 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 92,906,909 km

• M1: 124,765 km (0.11 R)
• M2: 479,910 km (0.101 R)
• M3: 935,286 km (0.082 R)
• M4: 1,383,032 km (0.114 R)
• M5: 1,978,731 km (0.064 R)
• M6: 2,538,526 km (0.108 R)
• M7: 3,585,113 km (0.111 R)
• M8: 4,285,231 km (0.068 R)
• M9: 4,955,878 km (0.073 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508.1

Radius: 14.6

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.88 AU - 1.34 AU

Year: 755 Days

Day: 10.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 92,906,909 km

• M1: 181,612 km (0.06 R)
• M2: 684,410 km (0.093 R)
• M3: 1,144,873 km (0.027 R)
• M4: 1,658,592 km (0.086 R)
• M5: 2,119,802 km (0.116 R)
• M6: 3,899,717 km (0.038 R)
• M7: 4,525,635 km (0.097 R)
• M8: 5,115,050 km (0.098 R)
• M9: 6,469,061 km (0.026 R)
• M10: 6,941,940 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 804.7

Radius: 9.1

Gravity: 9.72 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.13 AU - 1.57 AU

Year: 1013 Days

Day: 14.9 Hours

Environment

Temp: -167 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 92,906,909 km

• M1: 113,246 km (0.1 R)
• M2: 583,432 km (0.052 R)
• M3: 1,346,231 km (0.093 R)
• M4: 1,797,269 km (0.054 R)
• M5: 2,148,525 km (0.03 R)
• M6: 2,606,145 km (0.101 R)
• M7: 3,654,975 km (0.115 R)
• M8: 4,344,023 km (0.103 R)
• M9: 5,871,716 km (0.063 R)
• M10: 7,006,715 km (0.117 R)
• M11: 8,362,970 km (0.11 R)
• M12: 9,765,450 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 424.8

Radius: 11.6

Gravity: 3.16 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.16 AU - 1.7 AU

Year: 1104 Days

Day: 13.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 92,906,909 km

• M1: 144,512 km (0.063 R)
• M2: 544,835 km (0.084 R)
• M3: 1,022,651 km (0.081 R)
• M4: 1,652,009 km (0.055 R)
• M5: 2,185,475 km (0.041 R)
• M6: 2,572,635 km (0.043 R)
• M7: 3,082,763 km (0.098 R)
• M8: 3,837,485 km (0.09 R)
• M9: 5,595,559 km (0.081 R)
• M10: 6,118,852 km (0.093 R)
• M11: 6,674,608 km (0.096 R)
• M12: 7,056,083 km (0.12 R)
• M13: 7,428,282 km (0.06 R)
• M14: 8,011,415 km (0.044 R)
• M15: 8,494,466 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 935.4

Radius: 10.2

Gravity: 8.99 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 1.38 AU - 1.56 AU

Year: 1151 Days

Day: 12.8 Hours

Environment

Temp: -177 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 92,906,909 km

• M1: 127,009 km (0.032 R)
• M2: 456,423 km (0.08 R)
• M3: 832,063 km (0.04 R)
• M4: 1,269,338 km (0.031 R)
• M5: 1,683,724 km (0.092 R)
• M6: 2,098,858 km (0.112 R)
• M7: 2,506,961 km (0.105 R)
• M8: 2,844,005 km (0.113 R)
• M9: 4,147,601 km (0.104 R)
• M10: 5,173,693 km (0.111 R)
• M11: 6,037,172 km (0.118 R)
• M12: 6,527,553 km (0.114 R)
• M13: 7,641,310 km (0.093 R)
• M14: 9,176,034 km (0.114 R)
• M15: 9,888,419 km (0.079 R)
• M16: 10,438,491 km (0.095 R)
• M17: 10,974,649 km (0.103 R)
• M18: 11,777,392 km (0.088 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 911.3

Radius: 5.9

Gravity: 26.18 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 9.04 AU - 12.86 AU

Year: 23396 Days

Day: 17.1 Hours

Environment

Temp: -240 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 92,906,909 km

• M1: 83,027 km (0.12 R)
• M2: 1,008,888 km (0.052 R)
• M3: 3,349,197 km (0.115 R)
• M4: 5,454,039 km (0.065 R)
• M5: 5,708,206 km (0.076 R)
• M6: 8,476,515 km (0.102 R)
• M7: 12,827,569 km (0.069 R)
• M8: 15,772,702 km (0.114 R)
• M9: 17,265,539 km (0.106 R)
• M10: 27,006,006 km (0.096 R)
• M11: 29,521,494 km (0.063 R)
• M12: 36,187,127 km (0.089 R)
• M13: 36,934,368 km (0.086 R)
• M14: 46,017,951 km (0.105 R)
• M15: 46,894,744 km (0.077 R)
• M16: 47,426,115 km (0.095 R)
• M17: 54,704,052 km (0.073 R)
• M18: 55,687,807 km (0.115 R)
• M19: 58,709,684 km (0.056 R)
• M20: 80,170,247 km (0.049 R)
• M21: 80,929,905 km (0.082 R)
• M22: 92,073,899 km (0.088 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 285 - 11,255 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit