🌌 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: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.95

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.47 AU - 0.77 AU

Year: 315 Days

Day: 18.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 0 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 238.3

Radius: 13.2

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.64 AU - 0.86 AU

Year: 419 Days

Day: 8.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 62,136,421 km

• M1: 164,109 km (0.042 R)
• M2: 579,991 km (0.081 R)
• M3: 1,670,859 km (0.099 R)
• M4: 2,262,668 km (0.101 R)
• M5: 3,058,678 km (0.056 R)
• M6: 3,597,530 km (0.06 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417.1

Radius: 13.6

Gravity: 2.26 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 1.53 AU - 1.87 AU

Year: 1431 Days

Day: 6.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 62,136,421 km

• M1: 169,943 km (0.089 R)
• M2: 1,033,422 km (0.063 R)
• M3: 1,836,015 km (0.095 R)
• M4: 2,474,947 km (0.107 R)
• M5: 3,796,644 km (0.063 R)
• M6: 5,186,109 km (0.104 R)
• M7: 6,073,225 km (0.065 R)
• M8: 7,131,779 km (0.086 R)
• M9: 8,527,527 km (0.112 R)
• M10: 9,554,517 km (0.108 R)
• M11: 10,036,820 km (0.055 R)
• M12: 10,855,270 km (0.039 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 718.8

Radius: 8.6

Gravity: 9.72 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 2.59 AU - 3.77 AU

Year: 3661 Days

Day: 8.1 Hours

Environment

Temp: -204 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 62,136,421 km

• M1: 106,962 km (0.079 R)
• M2: 382,223 km (0.064 R)
• M3: 706,102 km (0.098 R)
• M4: 1,236,277 km (0.091 R)
• M5: 1,523,505 km (0.115 R)
• M6: 1,842,896 km (0.087 R)
• M7: 2,164,232 km (0.109 R)
• M8: 2,460,586 km (0.09 R)
• M9: 2,835,029 km (0.096 R)
• M10: 3,341,867 km (0.107 R)
• M11: 5,852,717 km (0.064 R)
• M12: 6,736,691 km (0.104 R)
• M13: 8,403,960 km (0.106 R)
• M14: 9,922,827 km (0.083 R)
• M15: 12,391,940 km (0.085 R)
• M16: 12,673,483 km (0.084 R)
• M17: 12,959,514 km (0.11 R)
• M18: 15,676,062 km (0.062 R)
• M19: 16,228,078 km (0.063 R)
• M20: 19,752,604 km (0.12 R)
• M21: 20,266,772 km (0.066 R)
• M22: 20,789,915 km (0.07 R)
• M23: 22,205,710 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 331.6

Radius: 8.9

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 4.2 AU - 5.98 AU

Year: 7415 Days

Day: 10.7 Hours

Environment

Temp: -227 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 62,136,421 km

• M1: 111,151 km (0.069 R)
• M2: 728,841 km (0.098 R)
• M3: 1,328,878 km (0.033 R)
• M4: 1,654,253 km (0.11 R)
• M5: 2,338,364 km (0.117 R)
• M6: 2,781,473 km (0.11 R)
• M7: 3,444,940 km (0.104 R)
• M8: 4,505,589 km (0.11 R)
• M9: 5,194,188 km (0.117 R)
• M10: 5,860,197 km (0.08 R)
• M11: 6,549,395 km (0.094 R)
• M12: 9,350,465 km (0.098 R)
• M13: 11,152,671 km (0.102 R)
• M14: 14,355,711 km (0.106 R)
• M15: 17,361,282 km (0.086 R)
• M16: 17,867,970 km (0.114 R)
• M17: 18,254,381 km (0.07 R)
• M18: 23,261,422 km (0.042 R)
• M19: 23,722,333 km (0.062 R)
• M20: 24,504,131 km (0.11 R)
• M21: 26,201,618 km (0.1 R)
• M22: 28,062,616 km (0.051 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 110.4

Radius: 12.3

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 5.08 AU - 5.68 AU

Year: 8057 Days

Day: 12.5 Hours

Environment

Temp: -216 °C

Axial Tilt: 131.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 62,136,421 km

• M1: 153,039 km (0.113 R)
• M2: 1,131,409 km (0.09 R)
• M3: 2,527,007 km (0.103 R)
• M4: 4,092,699 km (0.105 R)
• M5: 4,807,328 km (0.084 R)
• M6: 7,113,828 km (0.12 R)
• M7: 9,280,603 km (0.092 R)
• M8: 11,424,939 km (0.112 R)
• M9: 13,881,486 km (0.108 R)
• M10: 17,394,941 km (0.1 R)
• M11: 18,549,238 km (0.087 R)
• M12: 20,187,485 km (0.083 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 555

Radius: 3.5

Gravity: 45.31 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 6.01 AU - 7.05 AU

Year: 10774 Days

Day: 21.7 Hours

Environment

Temp: -212 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 62,136,421 km

• M1: 43,683 km (0.108 R)
• M2: 198,666 km (0.112 R)
• M3: 380,876 km (0.108 R)
• M4: 549,922 km (0.097 R)
• M5: 776,712 km (0.097 R)
• M6: 887,415 km (0.079 R)
• M7: 1,019,360 km (0.105 R)
• M8: 1,441,375 km (0.044 R)
• M9: 1,823,299 km (0.112 R)
• M10: 2,557,675 km (0.036 R)
• M11: 3,230,117 km (0.092 R)
• M12: 3,959,108 km (0.09 R)
• M13: 4,150,294 km (0.054 R)
• M14: 4,521,745 km (0.103 R)
• M15: 4,822,138 km (0.092 R)
• M16: 6,014,732 km (0.088 R)
• M17: 6,678,947 km (0.074 R)
• M18: 12,400,915 km (0.047 R)
• M19: 14,029,288 km (0.091 R)
• M20: 14,992,699 km (0.099 R)
• M21: 15,930,976 km (0.097 R)
• M22: 16,554,351 km (0.089 R)
• M23: 22,138,540 km (0.08 R)
• M24: 22,481,119 km (0.111 R)
• M25: 25,070,958 km (0.074 R)
• M26: 27,163,533 km (0.107 R)
• M27: 32,017,983 km (0.081 R)
• M28: 32,456,006 km (0.106 R)
• M29: 32,787,066 km (0.082 R)
• M30: 34,247,889 km (0.1 R)
• M31: 38,395,640 km (0.099 R)
• M32: 39,513,884 km (0.088 R)
• M33: 43,264,452 km (0.112 R)
• M34: 45,431,826 km (0.088 R)
• M35: 46,262,842 km (0.119 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 403.3

Radius: 7.6

Gravity: 6.98 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 9.12 AU - 10.1 AU

Year: 19235 Days

Day: 16.1 Hours

Environment

Temp: -223 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 62,136,421 km

• M1: 97,239 km (0.036 R)
• M2: 487,390 km (0.118 R)
• M3: 746,194 km (0.07 R)
• M4: 1,172,399 km (0.049 R)
• M5: 1,978,881 km (0.103 R)
• M6: 2,427,076 km (0.104 R)
• M7: 6,870,432 km (0.102 R)
• M8: 8,618,333 km (0.111 R)
• M9: 8,969,888 km (0.108 R)
• M10: 9,331,167 km (0.085 R)
• M11: 11,048,551 km (0.083 R)
• M12: 14,455,642 km (0.087 R)
• M13: 14,809,441 km (0.106 R)
• M14: 25,748,486 km (0.086 R)
• M15: 35,569,287 km (0.102 R)
• M16: 37,927,698 km (0.111 R)
• M17: 40,249,008 km (0.091 R)
• M18: 41,373,386 km (0.032 R)
• M19: 44,872,330 km (0.093 R)
• M20: 45,928,790 km (0.045 R)
• M21: 48,721,633 km (0.092 R)
• M22: 49,197,803 km (0.03 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 447 - 18,194 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit