🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.58 AU - 0.64 AU

Year: 303 Days

Day: 18.4 Hours

Environment

Temp: -133 °C

Axial Tilt: 47.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510.2

Radius: 13.1

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.87 AU - 0.97 AU

Year: 561 Days

Day: 13.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,444,295 km

• M1: 163,361 km (0.12 R)
• M2: 639,232 km (0.034 R)
• M3: 1,060,799 km (0.112 R)
• M4: 1,670,559 km (0.036 R)
• M5: 2,166,028 km (0.106 R)
• M6: 2,576,674 km (0.093 R)
• M7: 3,017,838 km (0.086 R)
• M8: 3,509,566 km (0.115 R)
• M9: 4,234,817 km (0.116 R)
• M10: 4,656,234 km (0.038 R)
• M11: 5,333,164 km (0.071 R)
• M12: 5,808,437 km (0.099 R)
• M13: 6,275,182 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 178.5

Radius: 14.4

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 2.22 AU - 2.36 AU

Year: 2203 Days

Day: 5.6 Hours

Environment

Temp: -189 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,444,295 km

• M1: 181,462 km (0.084 R)
• M2: 758,611 km (0.107 R)
• M3: 1,276,967 km (0.095 R)
• M4: 1,787,545 km (0.084 R)
• M5: 2,588,642 km (0.058 R)
• M6: 3,141,705 km (0.119 R)
• M7: 3,665,148 km (0.059 R)
• M8: 4,129,051 km (0.079 R)
• M9: 5,680,231 km (0.095 R)
• M10: 7,719,400 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 150.6

Radius: 14.8

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 2.48 AU - 4.1 AU

Year: 3794 Days

Day: 13.7 Hours

Environment

Temp: -212 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 42,444,295 km

• M1: 184,005 km (0.053 R)
• M2: 906,413 km (0.065 R)
• M3: 1,408,464 km (0.075 R)
• M4: 1,924,726 km (0.075 R)
• M5: 2,814,534 km (0.051 R)
• M6: 3,339,174 km (0.046 R)
• M7: 5,682,026 km (0.083 R)
• M8: 6,377,507 km (0.102 R)
• M9: 7,291,999 km (0.106 R)
• M10: 8,564,029 km (0.087 R)
• M11: 9,317,703 km (0.092 R)
• M12: 11,103,154 km (0.084 R)
• M13: 11,658,312 km (0.108 R)
• M14: 12,624,714 km (0.117 R)
• M15: 13,188,847 km (0.114 R)
• M16: 14,024,052 km (0.036 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 194.4

Radius: 9.5

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 3.85 AU - 6.05 AU

Year: 7002 Days

Day: 11.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,444,295 km

• M1: 151,991 km (0.051 R)
• M2: 785,538 km (0.06 R)
• M3: 2,652,071 km (0.056 R)
• M4: 3,715,712 km (0.085 R)
• M5: 4,276,106 km (0.112 R)
• M6: 6,182,431 km (0.113 R)
• M7: 8,274,408 km (0.117 R)
• M8: 10,841,956 km (0.091 R)
• M9: 18,746,857 km (0.115 R)
• M10: 20,913,932 km (0.075 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 882.5

Radius: 5.7

Gravity: 27.16 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 6.32 AU - 8.56 AU

Year: 12903 Days

Day: 17.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 42,444,295 km

• M1: 70,909 km (0.04 R)
• M2: 267,032 km (0.084 R)
• M3: 449,242 km (0.086 R)
• M4: 1,168,659 km (0.109 R)
• M5: 1,640,041 km (0.068 R)
• M6: 2,075,222 km (0.064 R)
• M7: 3,173,120 km (0.082 R)
• M8: 4,389,052 km (0.105 R)
• M9: 4,645,463 km (0.038 R)
• M10: 5,014,371 km (0.114 R)
• M11: 6,646,484 km (0.114 R)
• M12: 9,420,328 km (0.052 R)
• M13: 11,266,664 km (0.12 R)
• M14: 12,946,499 km (0.044 R)
• M15: 13,744,155 km (0.115 R)
• M16: 15,510,158 km (0.113 R)
• M17: 16,181,403 km (0.088 R)
• M18: 16,639,472 km (0.096 R)
• M19: 18,147,119 km (0.111 R)
• M20: 21,431,690 km (0.071 R)
• M21: 23,600,710 km (0.106 R)
• M22: 31,803,311 km (0.112 R)
• M23: 32,280,977 km (0.054 R)
• M24: 32,763,579 km (0.078 R)
• M25: 34,115,346 km (0.056 R)
• M26: 37,061,227 km (0.054 R)
• M27: 37,457,512 km (0.109 R)
• M28: 38,124,269 km (0.118 R)
• M29: 40,870,886 km (0.078 R)
• M30: 41,293,799 km (0.061 R)
• M31: 48,151,366 km (0.112 R)
• M32: 49,576,286 km (0.071 R)
• M33: 52,178,391 km (0.093 R)
• M34: 53,850,147 km (0.118 R)
• M35: 60,894,711 km (0.041 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 303.2

Radius: 6.4

Gravity: 7.4 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 6.92 AU - 9.22 AU

Year: 14576 Days

Day: 19.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 42,444,295 km

• M1: 79,736 km (0.102 R)
• M2: 278,850 km (0.064 R)
• M3: 613,650 km (0.079 R)
• M4: 932,444 km (0.104 R)
• M5: 1,503,459 km (0.11 R)
• M6: 2,177,098 km (0.08 R)
• M7: 2,713,556 km (0.085 R)
• M8: 4,018,947 km (0.099 R)
• M9: 4,323,229 km (0.069 R)
• M10: 4,583,679 km (0.095 R)
• M11: 4,885,118 km (0.045 R)
• M12: 5,135,844 km (0.091 R)
• M13: 5,527,941 km (0.102 R)
• M14: 6,558,071 km (0.109 R)
• M15: 8,268,723 km (0.116 R)
• M16: 9,905,324 km (0.069 R)
• M17: 10,616,512 km (0.029 R)
• M18: 11,037,929 km (0.105 R)
• M19: 14,179,933 km (0.031 R)
• M20: 15,280,675 km (0.111 R)
• M21: 17,797,808 km (0.092 R)
• M22: 24,445,040 km (0.115 R)
• M23: 33,690,039 km (0.079 R)
• M24: 34,370,560 km (0.097 R)
• M25: 36,111,879 km (0.114 R)
• M26: 37,184,496 km (0.109 R)
• M27: 41,428,288 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 115.9

Radius: 5.2

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 9.5 AU - 10.6 AU

Year: 20257 Days

Day: 24.7 Hours

Environment

Temp: -238 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 42,444,295 km

• M1: 64,776 km (0.066 R)
• M2: 262,095 km (0.106 R)
• M3: 435,180 km (0.072 R)
• M4: 607,667 km (0.061 R)
• M5: 1,186,162 km (0.083 R)
• M6: 1,672,205 km (0.053 R)
• M7: 2,299,469 km (0.055 R)
• M8: 2,676,456 km (0.068 R)
• M9: 3,204,536 km (0.079 R)
• M10: 3,434,169 km (0.114 R)
• M11: 5,458,078 km (0.084 R)
• M12: 8,333,499 km (0.113 R)
• M13: 8,505,686 km (0.058 R)
• M14: 8,901,971 km (0.087 R)
• M15: 9,082,087 km (0.068 R)
• M16: 10,712,105 km (0.116 R)
• M17: 12,193,274 km (0.094 R)
• M18: 13,866,077 km (0.093 R)
• M19: 14,414,802 km (0.04 R)
• M20: 19,639,358 km (0.106 R)
• M21: 20,331,099 km (0.103 R)
• M22: 22,008,091 km (0.117 R)
• M23: 22,838,060 km (0.11 R)
• M24: 27,971,810 km (0.088 R)
• M25: 29,740,057 km (0.063 R)
• M26: 30,244,202 km (0.077 R)
• M27: 33,065,169 km (0.042 R)
• M28: 40,565,707 km (0.081 R)
• M29: 40,936,859 km (0.082 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 548 - 16,561 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit