🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.93

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.59 AU - 0.69 AU

Year: 326 Days

Day: 22.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 353.4

Radius: 14.7

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.74 AU - 0.78 AU

Year: 421 Days

Day: 9.3 Hours

Environment

Temp: -133 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 42,037,248 km

• M1: 182,958 km (0.119 R)
• M2: 829,819 km (0.053 R)
• M3: 1,626,428 km (0.05 R)
• M4: 2,248,157 km (0.114 R)
• M5: 2,938,551 km (0.056 R)
• M6: 3,826,115 km (0.071 R)
• M7: 4,482,251 km (0.042 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 689.7

Radius: 12.9

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.76 AU - 1.26 AU

Year: 645 Days

Day: 6.8 Hours

Environment

Temp: -159 °C

Axial Tilt: 156.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 42,037,248 km

• M1: 160,369 km (0.067 R)
• M2: 579,093 km (0.113 R)
• M3: 1,123,779 km (0.041 R)
• M4: 1,699,282 km (0.101 R)
• M5: 2,239,181 km (0.1 R)
• M6: 3,068,851 km (0.09 R)
• M7: 4,441,710 km (0.107 R)
• M8: 4,858,340 km (0.068 R)
• M9: 5,371,611 km (0.066 R)
• M10: 6,054,525 km (0.095 R)
• M11: 6,794,735 km (0.075 R)
• M12: 7,372,183 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 140.2

Radius: 11.5

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.39 AU - 1.79 AU

Year: 1275 Days

Day: 9.7 Hours

Environment

Temp: -174 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 42,037,248 km

• M1: 143,016 km (0.12 R)
• M2: 571,913 km (0.097 R)
• M3: 972,985 km (0.073 R)
• M4: 1,448,407 km (0.115 R)
• M5: 1,830,330 km (0.093 R)
• M6: 2,223,772 km (0.098 R)
• M7: 2,652,669 km (0.041 R)
• M8: 3,496,252 km (0.117 R)
• M9: 4,094,643 km (0.113 R)
• M10: 4,494,967 km (0.067 R)
• M11: 4,888,858 km (0.091 R)
• M12: 5,948,460 km (0.109 R)
• M13: 6,385,585 km (0.044 R)
• M14: 6,988,016 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.6

Radius: 10.6

Gravity: 6.78 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 1.91 AU - 2.01 AU

Year: 1745 Days

Day: 8.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 42,037,248 km

• M1: 132,544 km (0.03 R)
• M2: 506,688 km (0.099 R)
• M3: 1,064,987 km (0.102 R)
• M4: 1,874,761 km (0.082 R)
• M5: 2,717,445 km (0.045 R)
• M6: 3,209,473 km (0.025 R)
• M7: 3,690,280 km (0.074 R)
• M8: 4,180,662 km (0.118 R)
• M9: 4,965,453 km (0.077 R)
• M10: 5,427,261 km (0.068 R)
• M11: 5,774,478 km (0.096 R)
• M12: 6,112,120 km (0.109 R)
• M13: 6,643,193 km (0.097 R)
• M14: 9,841,595 km (0.092 R)
• M15: 13,270,378 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 530.5

Radius: 12.8

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 2.05 AU - 2.15 AU

Year: 1935 Days

Day: 14.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,037,248 km

• M1: 159,471 km (0.115 R)
• M2: 827,575 km (0.09 R)
• M3: 1,652,308 km (0.079 R)
• M4: 2,279,124 km (0.038 R)
• M5: 3,384,801 km (0.116 R)
• M6: 4,462,205 km (0.07 R)
• M7: 5,483,660 km (0.09 R)
• M8: 7,151,825 km (0.096 R)
• M9: 7,786,270 km (0.101 R)
• M10: 8,669,945 km (0.114 R)
• M11: 11,244,973 km (0.073 R)
• M12: 11,650,533 km (0.111 R)
• M13: 12,142,410 km (0.099 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.6

Radius: 9.7

Gravity: 6.65 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 3.87 AU - 4.53 AU

Year: 5473 Days

Day: 10.9 Hours

Environment

Temp: -216 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 42,037,248 km

• M1: 122,521 km (0.057 R)
• M2: 779,405 km (0.082 R)
• M3: 1,265,149 km (0.082 R)
• M4: 1,703,321 km (0.049 R)
• M5: 3,318,081 km (0.08 R)
• M6: 3,700,603 km (0.055 R)
• M7: 5,221,265 km (0.06 R)
• M8: 7,724,037 km (0.111 R)
• M9: 8,830,463 km (0.066 R)
• M10: 9,359,441 km (0.098 R)
• M11: 10,981,232 km (0.08 R)
• M12: 13,672,946 km (0.114 R)
• M13: 14,270,739 km (0.026 R)
• M14: 15,930,528 km (0.11 R)
• M15: 16,470,726 km (0.116 R)
• M16: 18,821,357 km (0.115 R)
• M17: 19,155,259 km (0.063 R)
• M18: 22,791,086 km (0.052 R)
• M19: 23,323,654 km (0.103 R)
• M20: 24,571,899 km (0.077 R)
• M21: 25,782,146 km (0.084 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 774.7

Radius: 13.6

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 5.47 AU - 5.99 AU

Year: 8721 Days

Day: 10.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 42,037,248 km

• M1: 169,195 km (0.116 R)
• M2: 1,801,308 km (0.084 R)
• M3: 2,252,944 km (0.084 R)
• M4: 3,582,271 km (0.085 R)
• M5: 4,225,392 km (0.072 R)
• M6: 7,684,095 km (0.032 R)
• M7: 8,145,006 km (0.114 R)
• M8: 10,427,121 km (0.11 R)
• M9: 14,702,928 km (0.101 R)
• M10: 20,027,116 km (0.086 R)
• M11: 25,578,394 km (0.101 R)
• M12: 29,359,779 km (0.111 R)
• M13: 39,850,180 km (0.11 R)
• M14: 42,653,345 km (0.094 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 273.1

Radius: 7.5

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 6.61 AU - 8.35 AU

Year: 13007 Days

Day: 17.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 42,037,248 km

• M1: 94,247 km (0.095 R)
• M2: 341,981 km (0.074 R)
• M3: 702,512 km (0.079 R)
• M4: 1,159,234 km (0.06 R)
• M5: 1,785,899 km (0.037 R)
• M6: 2,879,609 km (0.102 R)
• M7: 3,617,725 km (0.089 R)
• M8: 5,923,178 km (0.058 R)
• M9: 6,373,168 km (0.106 R)
• M10: 6,808,648 km (0.103 R)
• M11: 8,234,764 km (0.046 R)
• M12: 8,795,607 km (0.063 R)
• M13: 10,581,207 km (0.026 R)
• M14: 11,296,135 km (0.103 R)
• M15: 13,634,051 km (0.083 R)
• M16: 13,992,338 km (0.089 R)
• M17: 14,295,872 km (0.11 R)
• M18: 15,814,141 km (0.097 R)
• M19: 16,209,827 km (0.096 R)
• M20: 17,021,096 km (0.094 R)
• M21: 18,216,533 km (0.08 R)
• M22: 19,997,944 km (0.115 R)
• M23: 21,168,398 km (0.06 R)
• M24: 28,676,865 km (0.056 R)
• M25: 29,962,509 km (0.114 R)
• M26: 30,977,231 km (0.085 R)
• M27: 34,158,729 km (0.115 R)
• M28: 34,709,399 km (0.052 R)
• M29: 35,265,903 km (0.11 R)
• M30: 39,089,176 km (0.086 R)
• M31: 40,422,541 km (0.088 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 - 18,893 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit