🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.58

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.57 AU - 0.77 AU

Year: 360 Days

Day: 15.8 Hours

Environment

Temp: -135 °C

Axial Tilt: 129.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.2

Radius: 8.7

Gravity: 1.63 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 1.47 AU - 1.77 AU

Year: 1353 Days

Day: 6.3 Hours

Environment

Temp: -188 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 72,730,679 km

• M1: 108,159 km (0.112 R)
• M2: 446,849 km (0.108 R)
• M3: 860,637 km (0.056 R)
• M4: 1,341,295 km (0.058 R)
• M5: 2,547,652 km (0.038 R)
• M6: 2,828,447 km (0.116 R)
• M7: 3,757,300 km (0.032 R)
• M8: 4,668,351 km (0.06 R)
• M9: 5,486,951 km (0.12 R)
• M10: 5,865,882 km (0.063 R)
• M11: 6,398,151 km (0.115 R)
• M12: 6,757,186 km (0.027 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 529.1

Radius: 9.5

Gravity: 5.86 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 1.83 AU - 2.95 AU

Year: 2424 Days

Day: 14.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 72,730,679 km

• M1: 118,631 km (0.055 R)
• M2: 463,604 km (0.094 R)
• M3: 815,308 km (0.093 R)
• M4: 1,655,001 km (0.068 R)
• M5: 2,291,839 km (0.05 R)
• M6: 2,821,565 km (0.101 R)
• M7: 3,712,720 km (0.095 R)
• M8: 4,263,390 km (0.094 R)
• M9: 4,889,457 km (0.057 R)
• M10: 5,293,670 km (0.105 R)
• M11: 5,744,558 km (0.035 R)
• M12: 6,642,145 km (0.069 R)
• M13: 6,942,688 km (0.082 R)
• M14: 7,252,505 km (0.115 R)
• M15: 7,689,779 km (0.091 R)
• M16: 8,237,607 km (0.052 R)
• M17: 8,617,137 km (0.077 R)
• M18: 9,208,347 km (0.084 R)
• M19: 10,508,502 km (0.061 R)
• M20: 11,107,044 km (0.111 R)
• M21: 11,926,989 km (0.104 R)
• M22: 12,249,822 km (0.109 R)
• M23: 13,039,848 km (0.072 R)
• M24: 13,469,194 km (0.074 R)
• M25: 15,710,320 km (0.086 R)
• M26: 16,196,513 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 582.8

Radius: 13.6

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 2.18 AU - 3.3 AU

Year: 2975 Days

Day: 12.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 72,730,679 km

• M1: 169,195 km (0.091 R)
• M2: 820,694 km (0.104 R)
• M3: 1,279,361 km (0.106 R)
• M4: 1,742,965 km (0.099 R)
• M5: 2,279,872 km (0.102 R)
• M6: 2,831,888 km (0.053 R)
• M7: 3,600,821 km (0.102 R)
• M8: 4,106,013 km (0.116 R)
• M9: 7,262,977 km (0.11 R)
• M10: 9,694,989 km (0.102 R)
• M11: 12,109,349 km (0.085 R)
• M12: 12,803,783 km (0.111 R)
• M13: 13,848,574 km (0.055 R)
• M14: 15,047,900 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 444.1

Radius: 9.1

Gravity: 5.36 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 2.32 AU - 3.16 AU

Year: 2975 Days

Day: 6 Hours

Environment

Temp: -201 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 72,730,679 km

• M1: 114,891 km (0.073 R)
• M2: 439,818 km (0.095 R)
• M3: 963,410 km (0.101 R)
• M4: 1,280,408 km (0.057 R)
• M5: 1,689,259 km (0.1 R)
• M6: 2,082,552 km (0.084 R)
• M7: 2,508,008 km (0.077 R)
• M8: 2,864,500 km (0.061 R)
• M9: 3,357,575 km (0.049 R)
• M10: 3,754,458 km (0.108 R)
• M11: 4,222,998 km (0.056 R)
• M12: 4,907,857 km (0.092 R)
• M13: 5,492,935 km (0.078 R)
• M14: 5,968,057 km (0.115 R)
• M15: 8,372,394 km (0.109 R)
• M16: 8,733,374 km (0.035 R)
• M17: 9,381,282 km (0.045 R)
• M18: 12,172,180 km (0.116 R)
• M19: 12,980,607 km (0.115 R)
• M20: 13,643,775 km (0.097 R)
• M21: 15,918,261 km (0.091 R)
• M22: 17,250,280 km (0.115 R)
• M23: 18,269,640 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 86.6

Radius: 10.6

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 3.76 AU - 4.34 AU

Year: 5347 Days

Day: 11.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 72,730,679 km

• M1: 132,245 km (0.083 R)
• M2: 462,257 km (0.057 R)
• M3: 811,419 km (0.064 R)
• M4: 1,152,801 km (0.092 R)
• M5: 1,711,998 km (0.051 R)
• M6: 2,328,940 km (0.036 R)
• M7: 2,703,982 km (0.092 R)
• M8: 3,560,579 km (0.072 R)
• M9: 4,732,828 km (0.104 R)
• M10: 5,362,336 km (0.057 R)
• M11: 9,749,443 km (0.086 R)
• M12: 11,025,513 km (0.119 R)
• M13: 12,053,250 km (0.059 R)
• M14: 13,102,230 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 686.6

Radius: 11.4

Gravity: 5.28 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 4.46 AU - 5.36 AU

Year: 7137 Days

Day: 8.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 72,730,679 km

• M1: 142,417 km (0.086 R)
• M2: 782,098 km (0.036 R)
• M3: 1,589,627 km (0.044 R)
• M4: 1,982,621 km (0.03 R)
• M5: 2,791,795 km (0.119 R)
• M6: 3,643,157 km (0.044 R)
• M7: 4,743,300 km (0.112 R)
• M8: 5,204,959 km (0.081 R)
• M9: 6,019,519 km (0.067 R)
• M10: 7,589,100 km (0.084 R)
• M11: 8,020,839 km (0.1 R)
• M12: 10,479,630 km (0.12 R)
• M13: 13,402,922 km (0.043 R)
• M14: 15,924,544 km (0.075 R)
• M15: 17,096,493 km (0.105 R)
• M16: 19,032,290 km (0.11 R)
• M17: 22,603,789 km (0.079 R)
• M18: 26,064,587 km (0.093 R)
• M19: 31,642,792 km (0.108 R)
• M20: 33,386,654 km (0.118 R)
• M21: 35,410,714 km (0.082 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 993.9

Radius: 5.3

Gravity: 35.38 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 7.46 AU - 9.02 AU

Year: 15517 Days

Day: 17 Hours

Environment

Temp: -229 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 72,730,679 km

• M1: 65,973 km (0.078 R)
• M2: 316,100 km (0.06 R)
• M3: 489,634 km (0.091 R)
• M4: 778,059 km (0.07 R)
• M5: 1,147,715 km (0.05 R)
• M6: 2,027,799 km (0.082 R)
• M7: 9,876,003 km (0.114 R)
• M8: 11,068,746 km (0.064 R)
• M9: 12,024,078 km (0.115 R)
• M10: 12,758,754 km (0.116 R)
• M11: 14,688,267 km (0.112 R)
• M12: 15,372,378 km (0.116 R)
• M13: 15,605,003 km (0.063 R)
• M14: 20,206,184 km (0.104 R)
• M15: 20,485,484 km (0.111 R)
• M16: 27,414,558 km (0.113 R)
• M17: 36,302,167 km (0.104 R)
• M18: 40,130,975 km (0.065 R)
• M19: 43,288,537 km (0.08 R)
• M20: 47,095,654 km (0.091 R)
• M21: 52,335,319 km (0.11 R)
• M22: 58,703,102 km (0.037 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: 516 - 16,194 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit