🌌 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: 2.91

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.43 AU - 0.67 AU

Year: 268 Days

Day: 34.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 25,132,326 km

• M1: 48,769 km (0.032 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 76.5

Radius: 13

Gravity: 0.45 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.64 AU - 0.74 AU

Year: 376 Days

Day: 11.3 Hours

Environment

Temp: -141 °C

Axial Tilt: 150.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 25,132,326 km

• M1: 162,164 km (0.097 R)
• M2: 807,380 km (0.051 R)
• M3: 1,240,615 km (0.102 R)
• M4: 1,986,061 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 762

Radius: 10.1

Gravity: 7.47 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.81 AU - 0.85 AU

Year: 496 Days

Day: 14.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 25,132,326 km

• M1: 125,662 km (0.049 R)
• M2: 486,642 km (0.106 R)
• M3: 993,330 km (0.09 R)
• M4: 1,318,556 km (0.085 R)
• M5: 2,078,064 km (0.03 R)
• M6: 3,519,589 km (0.084 R)
• M7: 4,458,166 km (0.078 R)
• M8: 4,906,062 km (0.106 R)
• M9: 6,394,262 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 720.3

Radius: 10.1

Gravity: 7.06 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 1.01 AU - 1.61 AU

Year: 984 Days

Day: 7.1 Hours

Environment

Temp: -163 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 25,132,326 km

• M1: 127,607 km (0.119 R)
• M2: 550,670 km (0.072 R)
• M3: 1,303,446 km (0.077 R)
• M4: 1,908,270 km (0.073 R)
• M5: 2,654,764 km (0.084 R)
• M6: 3,481,591 km (0.113 R)
• M7: 3,813,549 km (0.045 R)
• M8: 4,183,056 km (0.117 R)
• M9: 5,281,104 km (0.099 R)
• M10: 5,680,082 km (0.052 R)
• M11: 7,117,867 km (0.08 R)
• M12: 8,141,415 km (0.09 R)
• M13: 8,593,500 km (0.042 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 39.7

Radius: 11.1

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.46 AU - 2.06 AU

Year: 1532 Days

Day: 11.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 25,132,326 km

• M1: 138,079 km (0.06 R)
• M2: 529,576 km (0.115 R)
• M3: 1,255,276 km (0.083 R)
• M4: 1,638,545 km (0.076 R)
• M5: 2,068,639 km (0.067 R)
• M6: 3,021,279 km (0.064 R)
• M7: 4,087,313 km (0.08 R)
• M8: 4,785,935 km (0.107 R)
• M9: 5,279,309 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 944.5

Radius: 10

Gravity: 9.45 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 2.72 AU - 4.44 AU

Year: 4444 Days

Day: 12.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 5.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 25,132,326 km

• M1: 133,740 km (0.076 R)
• M2: 449,392 km (0.118 R)
• M3: 825,631 km (0.065 R)
• M4: 1,462,469 km (0.109 R)
• M5: 1,862,793 km (0.084 R)
• M6: 2,653,717 km (0.118 R)
• M7: 3,787,070 km (0.108 R)
• M8: 4,783,242 km (0.085 R)
• M9: 6,037,471 km (0.081 R)
• M10: 7,251,757 km (0.053 R)
• M11: 7,751,414 km (0.042 R)
• M12: 8,661,118 km (0.117 R)
• M13: 9,430,650 km (0.11 R)
• M14: 9,939,731 km (0.089 R)
• M15: 10,466,914 km (0.097 R)
• M16: 12,867,362 km (0.101 R)
• M17: 13,282,795 km (0.084 R)
• M18: 15,322,263 km (0.12 R)
• M19: 18,203,219 km (0.067 R)
• M20: 18,661,138 km (0.118 R)
• M21: 19,668,380 km (0.086 R)
• M22: 20,499,845 km (0.108 R)
• M23: 21,644,867 km (0.057 R)
• M24: 22,831,926 km (0.094 R)
• M25: 24,140,160 km (0.112 R)
• M26: 25,742,502 km (0.105 R)
• M27: 27,499,978 km (0.091 R)
• M28: 29,965,949 km (0.079 R)
• M29: 30,604,732 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 378

Radius: 12.5

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 3.36 AU - 4.5 AU

Year: 5111 Days

Day: 13.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 25,132,326 km

• M1: 155,432 km (0.097 R)
• M2: 550,371 km (0.115 R)
• M3: 958,623 km (0.081 R)
• M4: 1,350,121 km (0.103 R)
• M5: 1,889,571 km (0.109 R)
• M6: 2,539,274 km (0.088 R)
• M7: 3,488,174 km (0.117 R)
• M8: 4,088,360 km (0.045 R)
• M9: 4,829,917 km (0.115 R)
• M10: 5,741,566 km (0.102 R)
• M11: 8,468,137 km (0.049 R)
• M12: 9,792,228 km (0.03 R)
• M13: 12,099,625 km (0.119 R)
• M14: 12,610,801 km (0.114 R)
• M15: 13,039,698 km (0.088 R)
• M16: 16,887,954 km (0.108 R)
• M17: 17,468,244 km (0.111 R)
• M18: 21,773,521 km (0.108 R)
• M19: 22,951,156 km (0.11 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: 240 - 18,798 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit