🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.49

Radius: 1.82

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.44 AU - 0.64 AU

Year: 260 Days

Day: 34 Hours

Environment

Temp: -120 °C

Axial Tilt: 18.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 31,430,403 km

• M1: 679,623 km (0.106 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.7

Radius: 11.7

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.59 AU - 0.95 AU

Year: 443 Days

Day: 12.3 Hours

Environment

Temp: -140 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 31,430,403 km

• M1: 145,559 km (0.11 R)
• M2: 671,395 km (0.066 R)
• M3: 1,106,725 km (0.06 R)
• M4: 1,495,530 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.1

Radius: 13.1

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.67 AU - 0.97 AU

Year: 487 Days

Day: 13.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 31,430,403 km

• M1: 165,605 km (0.103 R)
• M2: 658,081 km (0.089 R)
• M3: 1,110,615 km (0.094 R)
• M4: 1,562,550 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.9

Radius: 8.8

Gravity: 4.84 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 1.12 AU - 1.44 AU

Year: 950 Days

Day: 7 Hours

Environment

Temp: -172 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 31,430,403 km

• M1: 109,506 km (0.084 R)
• M2: 507,586 km (0.1 R)
• M3: 1,068,578 km (0.09 R)
• M4: 1,561,951 km (0.054 R)
• M5: 2,094,669 km (0.106 R)
• M6: 2,499,332 km (0.076 R)
• M7: 3,242,534 km (0.092 R)
• M8: 4,453,229 km (0.082 R)
• M9: 4,848,916 km (0.096 R)
• M10: 5,597,803 km (0.1 R)
• M11: 6,442,283 km (0.091 R)
• M12: 7,190,422 km (0.068 R)
• M13: 7,736,005 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 110.3

Radius: 13.8

Gravity: 0.58 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.25 AU - 2.07 AU

Year: 1403 Days

Day: 14.5 Hours

Environment

Temp: -183 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,430,403 km

• M1: 171,738 km (0.077 R)
• M2: 1,365,081 km (0.081 R)
• M3: 3,271,257 km (0.111 R)
• M4: 3,755,206 km (0.081 R)
• M5: 4,287,026 km (0.097 R)
• M6: 4,837,098 km (0.055 R)
• M7: 5,626,226 km (0.05 R)
• M8: 6,441,236 km (0.097 R)
• M9: 6,958,994 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 499.4

Radius: 14.3

Gravity: 2.44 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 2.27 AU - 3.45 AU

Year: 3173 Days

Day: 14 Hours

Environment

Temp: -202 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 31,430,403 km

• M1: 178,620 km (0.069 R)
• M2: 714,928 km (0.056 R)
• M3: 2,063,852 km (0.114 R)
• M4: 6,160,291 km (0.082 R)
• M5: 6,683,883 km (0.112 R)
• M6: 7,448,628 km (0.103 R)
• M7: 8,402,763 km (0.032 R)
• M8: 10,097,108 km (0.11 R)
• M9: 11,346,998 km (0.045 R)
• M10: 12,479,903 km (0.069 R)
• M11: 13,733,085 km (0.103 R)
• M12: 14,582,052 km (0.084 R)
• M13: 15,216,647 km (0.118 R)
• M14: 15,768,064 km (0.054 R)
• M15: 16,436,916 km (0.077 R)
• M16: 18,784,855 km (0.106 R)
• M17: 19,595,376 km (0.09 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 390.7

Radius: 9.1

Gravity: 4.72 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 2.91 AU - 4.23 AU

Year: 4425 Days

Day: 6.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 31,430,403 km

• M1: 113,096 km (0.071 R)
• M2: 485,146 km (0.073 R)
• M3: 837,898 km (0.103 R)
• M4: 1,496,727 km (0.053 R)
• M5: 2,528,503 km (0.049 R)
• M6: 2,899,057 km (0.069 R)
• M7: 3,475,159 km (0.098 R)
• M8: 3,811,006 km (0.042 R)
• M9: 4,830,665 km (0.105 R)
• M10: 5,250,287 km (0.091 R)
• M11: 5,640,737 km (0.062 R)
• M12: 5,994,536 km (0.105 R)
• M13: 6,538,474 km (0.098 R)
• M14: 7,431,573 km (0.114 R)
• M15: 7,724,785 km (0.087 R)
• M16: 8,230,576 km (0.046 R)
• M17: 8,579,887 km (0.05 R)
• M18: 9,159,429 km (0.114 R)
• M19: 10,722,727 km (0.087 R)
• M20: 11,097,619 km (0.06 R)
• M21: 12,051,006 km (0.083 R)
• M22: 12,778,052 km (0.112 R)
• M23: 13,437,778 km (0.098 R)
• M24: 13,873,856 km (0.057 R)
• M25: 16,858,184 km (0.116 R)
• M26: 17,308,623 km (0.101 R)
• M27: 19,009,401 km (0.107 R)
• M28: 22,064,788 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 289.8

Radius: 13.9

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 5.31 AU - 5.43 AU

Year: 8163 Days

Day: 12.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 31,430,403 km

• M1: 172,935 km (0.104 R)
• M2: 927,357 km (0.089 R)
• M3: 1,390,662 km (0.109 R)
• M4: 1,915,302 km (0.102 R)
• M5: 2,439,343 km (0.09 R)
• M6: 3,480,694 km (0.083 R)
• M7: 5,750,841 km (0.118 R)
• M8: 6,559,867 km (0.102 R)
• M9: 7,337,776 km (0.093 R)
• M10: 7,804,072 km (0.054 R)
• M11: 8,638,679 km (0.101 R)
• M12: 9,406,565 km (0.089 R)
• M13: 10,088,282 km (0.041 R)
• M14: 11,742,685 km (0.11 R)
• M15: 12,483,045 km (0.066 R)
• M16: 15,178,050 km (0.086 R)
• M17: 16,907,701 km (0.079 R)
• M18: 19,778,334 km (0.098 R)
• M19: 21,619,585 km (0.057 R)
• M20: 25,234,019 km (0.08 R)
• M21: 26,052,170 km (0.091 R)
• M22: 26,635,153 km (0.086 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 306 - 18,218 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit