🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.69

Radius: 0.86

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.48 AU - 0.72 AU

Year: 296 Days

Day: 22.4 Hours

Environment

Temp: -135 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 732.6

Radius: 9.7

Gravity: 7.79 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.86 AU - 1.12 AU

Year: 626 Days

Day: 6.2 Hours

Environment

Temp: -153 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 79,873,449 km

• M1: 120,725 km (0.05 R)
• M2: 506,090 km (0.07 R)
• M3: 920,924 km (0.043 R)
• M4: 1,659,788 km (0.115 R)
• M5: 3,830,154 km (0.086 R)
• M6: 4,944,210 km (0.086 R)
• M7: 5,431,450 km (0.12 R)
• M8: 6,124,088 km (0.108 R)
• M9: 7,685,142 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 631.3

Radius: 8

Gravity: 9.86 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 1.04 AU - 1.2 AU

Year: 754 Days

Day: 7.7 Hours

Environment

Temp: -157 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 79,873,449 km

• M1: 99,483 km (0.078 R)
• M2: 464,352 km (0.111 R)
• M3: 785,688 km (0.052 R)
• M4: 1,158,486 km (0.08 R)
• M5: 1,430,604 km (0.026 R)
• M6: 1,884,634 km (0.054 R)
• M7: 2,495,891 km (0.101 R)
• M8: 3,155,917 km (0.111 R)
• M9: 3,472,316 km (0.08 R)
• M10: 3,986,783 km (0.078 R)
• M11: 4,534,611 km (0.042 R)
• M12: 4,801,344 km (0.117 R)
• M13: 5,329,873 km (0.073 R)
• M14: 5,608,275 km (0.115 R)
• M15: 6,316,620 km (0.103 R)
• M16: 7,061,019 km (0.034 R)
• M17: 7,534,946 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 549

Radius: 11.1

Gravity: 4.46 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 3.97 AU - 4.71 AU

Year: 5749 Days

Day: 11.1 Hours

Environment

Temp: -216 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 79,873,449 km

• M1: 138,378 km (0.113 R)
• M2: 510,877 km (0.115 R)
• M3: 862,432 km (0.094 R)
• M4: 1,229,395 km (0.045 R)
• M5: 1,640,490 km (0.077 R)
• M6: 2,143,737 km (0.077 R)
• M7: 2,856,721 km (0.025 R)
• M8: 3,634,031 km (0.107 R)
• M9: 4,179,166 km (0.101 R)
• M10: 4,804,336 km (0.118 R)
• M11: 5,292,324 km (0.064 R)
• M12: 6,399,797 km (0.091 R)
• M13: 8,209,034 km (0.117 R)
• M14: 9,150,004 km (0.06 R)
• M15: 9,731,192 km (0.092 R)
• M16: 10,117,753 km (0.067 R)
• M17: 12,305,921 km (0.064 R)
• M18: 12,758,454 km (0.091 R)
• M19: 13,118,088 km (0.033 R)
• M20: 13,803,844 km (0.043 R)
• M21: 14,402,685 km (0.084 R)
• M22: 16,363,613 km (0.117 R)
• M23: 19,157,653 km (0.05 R)
• M24: 22,477,978 km (0.11 R)
• M25: 23,079,062 km (0.082 R)
• M26: 27,420,243 km (0.089 R)
• M27: 28,020,130 km (0.069 R)
• M28: 28,980,548 km (0.032 R)
• M29: 30,053,015 km (0.11 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 115.6

Radius: 6.7

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 6.05 AU - 7.71 AU

Year: 11474 Days

Day: 15.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 79,873,449 km

• M1: 83,326 km (0.107 R)
• M2: 592,108 km (0.073 R)
• M3: 1,201,121 km (0.032 R)
• M4: 1,697,038 km (0.068 R)
• M5: 2,756,490 km (0.115 R)
• M6: 3,426,838 km (0.118 R)
• M7: 3,658,566 km (0.062 R)
• M8: 5,167,110 km (0.097 R)
• M9: 5,444,315 km (0.051 R)
• M10: 6,589,487 km (0.056 R)
• M11: 10,888,032 km (0.06 R)
• M12: 11,530,705 km (0.096 R)
• M13: 11,909,038 km (0.103 R)
• M14: 13,558,205 km (0.072 R)
• M15: 15,638,961 km (0.062 R)
• M16: 17,425,459 km (0.067 R)
• M17: 17,923,770 km (0.118 R)
• M18: 18,303,898 km (0.032 R)
• M19: 19,542,718 km (0.087 R)
• M20: 21,116,188 km (0.07 R)
• M21: 22,551,281 km (0.057 R)
• M22: 23,593,828 km (0.109 R)
• M23: 23,973,956 km (0.084 R)
• M24: 27,663,937 km (0.106 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 695.2

Radius: 3.9

Gravity: 45.71 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 6.67 AU - 7.35 AU

Year: 11801 Days

Day: 21.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 26.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 79,873,449 km

• M1: 53,107 km (0.102 R)
• M2: 195,973 km (0.064 R)
• M3: 361,877 km (0.071 R)
• M4: 677,080 km (0.096 R)
• M5: 1,240,914 km (0.095 R)
• M6: 1,997,431 km (0.085 R)
• M7: 4,784,439 km (0.051 R)
• M8: 7,869,746 km (0.065 R)
• M9: 9,236,023 km (0.07 R)
• M10: 10,752,796 km (0.105 R)
• M11: 12,733,472 km (0.077 R)
• M12: 14,536,874 km (0.095 R)
• M13: 15,150,824 km (0.052 R)
• M14: 18,090,123 km (0.074 R)
• M15: 19,858,220 km (0.083 R)
• M16: 23,269,799 km (0.112 R)
• M17: 26,045,887 km (0.118 R)
• M18: 28,715,610 km (0.073 R)
• M19: 44,119,105 km (0.101 R)
• M20: 47,448,405 km (0.078 R)
• M21: 47,894,656 km (0.079 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 388.4

Radius: 5.6

Gravity: 12.39 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 6 AU - 8.24 AU

Year: 12080 Days

Day: 21.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 79,873,449 km

• M1: 168,298 km (0.12 R)
• M2: 462,407 km (0.093 R)
• M3: 645,365 km (0.081 R)
• M4: 832,363 km (0.111 R)
• M5: 1,014,274 km (0.094 R)
• M6: 1,270,684 km (0.062 R)
• M7: 2,653,567 km (0.08 R)
• M8: 2,966,675 km (0.116 R)
• M9: 3,166,239 km (0.092 R)
• M10: 3,446,137 km (0.09 R)
• M11: 5,100,839 km (0.037 R)
• M12: 8,745,492 km (0.1 R)
• M13: 11,628,093 km (0.094 R)
• M14: 14,510,694 km (0.047 R)
• M15: 15,947,283 km (0.119 R)
• M16: 16,218,204 km (0.104 R)
• M17: 20,902,562 km (0.09 R)
• M18: 27,081,403 km (0.09 R)
• M19: 27,856,769 km (0.075 R)
• M20: 32,605,006 km (0.109 R)
• M21: 37,030,709 km (0.064 R)
• M22: 37,267,971 km (0.089 R)
• M23: 40,068,892 km (0.12 R)
• M24: 40,318,870 km (0.119 R)
• M25: 44,327,943 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 691

Radius: 4.5

Gravity: 34.12 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 8.01 AU - 12.85 AU

Year: 21417 Days

Day: 21.7 Hours

Environment

Temp: -231 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 79,873,449 km

• M1: 60,288 km (0.029 R)
• M2: 223,350 km (0.102 R)
• M3: 376,837 km (0.041 R)
• M4: 838,197 km (0.089 R)
• M5: 1,159,383 km (0.091 R)
• M6: 1,507,947 km (0.099 R)
• M7: 1,697,936 km (0.12 R)
• M8: 3,003,327 km (0.106 R)
• M9: 3,193,167 km (0.064 R)
• M10: 4,332,803 km (0.089 R)
• M11: 5,678,735 km (0.092 R)
• M12: 6,226,563 km (0.093 R)
• M13: 6,762,871 km (0.11 R)
• M14: 7,875,879 km (0.099 R)
• M15: 11,408,932 km (0.057 R)
• M16: 16,532,360 km (0.099 R)
• M17: 16,869,105 km (0.12 R)
• M18: 19,636,366 km (0.109 R)
• M19: 21,774,120 km (0.039 R)
• M20: 23,422,987 km (0.118 R)
• M21: 26,850,873 km (0.084 R)
• M22: 27,668,725 km (0.111 R)
• M23: 28,744,333 km (0.054 R)
• M24: 32,399,907 km (0.096 R)
• M25: 42,947,305 km (0.11 R)
• M26: 50,824,381 km (0.062 R)
• M27: 52,979,338 km (0.11 R)
• M28: 53,527,465 km (0.113 R)
• M29: 59,218,018 km (0.118 R)
• M30: 60,204,167 km (0.112 R)
• M31: 63,227,690 km (0.117 R)
• M32: 65,928,829 km (0.062 R)
• M33: 72,678,086 km (0.116 R)
• M34: 74,035,537 km (0.108 R)
• M35: 79,157,320 km (0.116 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: 498 - 15,769 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit