🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.77

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.47 AU - 0.69 AU

Year: 281 Days

Day: 19.6 Hours

Environment

Temp: -134 °C

Axial Tilt: 31.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.52

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.54 AU - 0.64 AU

Year: 288 Days

Day: 20 Hours

Environment

Temp: -131 °C

Axial Tilt: 39.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.4

Radius: 14.9

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 0.84 AU - 1.12 AU

Year: 617 Days

Day: 7.1 Hours

Environment

Temp: -159 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 38,603,871 km

• M1: 187,596 km (0.093 R)
• M2: 839,693 km (0.092 R)
• M3: 1,325,288 km (0.086 R)
• M4: 2,434,257 km (0.03 R)
• M5: 3,028,908 km (0.065 R)
• M6: 3,505,677 km (0.109 R)
• M7: 4,045,725 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 167.8

Radius: 13.1

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.54 AU - 2.14 AU

Year: 1587 Days

Day: 7.3 Hours

Environment

Temp: -196 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 38,603,871 km

• M1: 162,912 km (0.088 R)
• M2: 715,078 km (0.116 R)
• M3: 1,203,066 km (0.101 R)
• M4: 1,653,954 km (0.066 R)
• M5: 2,330,585 km (0.119 R)
• M6: 3,238,046 km (0.074 R)
• M7: 3,832,099 km (0.083 R)
• M8: 4,920,124 km (0.118 R)
• M9: 5,670,058 km (0.043 R)
• M10: 7,103,056 km (0.095 R)
• M11: 7,796,592 km (0.114 R)
• M12: 8,258,850 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.3

Radius: 12.4

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 2.61 AU - 2.99 AU

Year: 2979 Days

Day: 9.3 Hours

Environment

Temp: -196 °C

Axial Tilt: 46.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 38,603,871 km

• M1: 154,983 km (0.12 R)
• M2: 616,792 km (0.06 R)
• M3: 1,095,056 km (0.097 R)
• M4: 1,751,043 km (0.061 R)
• M5: 2,191,459 km (0.111 R)
• M6: 2,856,871 km (0.065 R)
• M7: 3,577,932 km (0.112 R)
• M8: 4,330,858 km (0.102 R)
• M9: 5,323,590 km (0.085 R)
• M10: 6,994,299 km (0.085 R)
• M11: 7,605,406 km (0.112 R)
• M12: 8,145,903 km (0.03 R)
• M13: 9,246,794 km (0.11 R)
• M14: 9,713,988 km (0.069 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 677.2

Radius: 14.7

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 2.36 AU - 3.5 AU

Year: 3189 Days

Day: 9.3 Hours

Environment

Temp: -198 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 38,603,871 km

• M1: 182,809 km (0.114 R)
• M2: 1,067,082 km (0.098 R)
• M3: 1,576,462 km (0.056 R)
• M4: 2,157,052 km (0.117 R)
• M5: 2,767,561 km (0.085 R)
• M6: 4,064,724 km (0.084 R)
• M7: 4,909,952 km (0.097 R)
• M8: 5,789,438 km (0.082 R)
• M9: 6,366,137 km (0.113 R)
• M10: 8,228,930 km (0.067 R)
• M11: 8,959,865 km (0.106 R)
• M12: 9,471,041 km (0.093 R)
• M13: 10,834,925 km (0.117 R)
• M14: 11,331,590 km (0.119 R)
• M15: 12,061,328 km (0.067 R)
• M16: 12,959,664 km (0.054 R)
• M17: 15,504,922 km (0.092 R)
• M18: 15,977,202 km (0.069 R)
• M19: 18,135,600 km (0.079 R)
• M20: 19,135,064 km (0.082 R)
• M21: 20,419,810 km (0.098 R)
• M22: 21,761,404 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 669.5

Radius: 13.1

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 3.04 AU - 3.22 AU

Year: 3521 Days

Day: 10.3 Hours

Environment

Temp: -214 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 38,603,871 km

• M1: 162,912 km (0.119 R)
• M2: 611,257 km (0.117 R)
• M3: 1,113,457 km (0.108 R)
• M4: 1,670,410 km (0.103 R)
• M5: 2,155,855 km (0.068 R)
• M6: 2,639,804 km (0.107 R)
• M7: 3,196,607 km (0.052 R)
• M8: 3,913,480 km (0.08 R)
• M9: 4,687,948 km (0.086 R)
• M10: 5,301,898 km (0.06 R)
• M11: 6,965,875 km (0.085 R)
• M12: 7,569,503 km (0.104 R)
• M13: 10,140,192 km (0.063 R)
• M14: 11,255,445 km (0.102 R)
• M15: 11,865,206 km (0.027 R)
• M16: 12,867,661 km (0.068 R)
• M17: 14,375,159 km (0.074 R)
• M18: 15,727,823 km (0.063 R)
• M19: 16,270,115 km (0.047 R)
• M20: 18,625,234 km (0.073 R)
• M21: 23,366,888 km (0.091 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 545

Radius: 7.5

Gravity: 9.69 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 6.53 AU - 7.89 AU

Year: 12309 Days

Day: 23.7 Hours

Environment

Temp: -233 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 38,603,871 km

• M1: 94,995 km (0.053 R)
• M2: 395,238 km (0.06 R)
• M3: 771,177 km (0.088 R)
• M4: 1,140,833 km (0.115 R)
• M5: 1,468,154 km (0.097 R)
• M6: 1,873,713 km (0.061 R)
• M7: 2,148,076 km (0.097 R)
• M8: 2,630,978 km (0.076 R)
• M9: 3,426,090 km (0.113 R)
• M10: 4,284,782 km (0.07 R)
• M11: 4,764,393 km (0.102 R)
• M12: 5,724,811 km (0.114 R)
• M13: 6,047,494 km (0.112 R)
• M14: 10,982,578 km (0.088 R)
• M15: 12,886,660 km (0.099 R)
• M16: 16,676,273 km (0.104 R)
• M17: 17,113,996 km (0.108 R)
• M18: 21,747,940 km (0.116 R)
• M19: 22,801,259 km (0.107 R)
• M20: 23,796,234 km (0.099 R)
• M21: 24,072,541 km (0.106 R)
• M22: 25,390,499 km (0.116 R)
• M23: 29,845,374 km (0.098 R)
• M24: 30,166,710 km (0.116 R)
• M25: 30,816,563 km (0.032 R)
• M26: 33,624,964 km (0.039 R)
• M27: 34,440,871 km (0.12 R)
• M28: 35,870,278 km (0.106 R)
• M29: 36,112,178 km (0.085 R)
• M30: 39,745,013 km (0.103 R)
• M31: 40,788,308 km (0.119 R)
• M32: 47,144,871 km (0.052 R)
• M33: 47,435,390 km (0.062 R)
• M34: 50,557,498 km (0.093 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 110.4

Radius: 3.9

Gravity: 7.26 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 7.51 AU - 11.07 AU

Year: 18003 Days

Day: 15.8 Hours

Environment

Temp: -227 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 38,603,871 km

• M1: 98,435 km (0.11 R)
• M2: 1,131,708 km (0.112 R)
• M3: 3,950,132 km (0.113 R)
• M4: 5,223,359 km (0.096 R)
• M5: 6,052,431 km (0.076 R)
• M6: 10,061,055 km (0.11 R)
• M7: 12,441,008 km (0.119 R)
• M8: 15,482,781 km (0.039 R)
• M9: 16,641,566 km (0.116 R)
• M10: 27,137,353 km (0.072 R)
• M11: 37,119,720 km (0.118 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 215 - 12,711 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit