🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.52

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.48 AU - 0.56 AU

Year: 246 Days

Day: 32.1 Hours

Environment

Temp: -117 °C

Axial Tilt: 24 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,101,959 km

• M1: 55,501 km (0.034 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.33

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.52 AU - 0.62 AU

Year: 282 Days

Day: 26.9 Hours

Environment

Temp: -130 °C

Axial Tilt: 0 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,101,959 km

• M1: 158,723 km (0.067 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 79.7

Radius: 8.5

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.69 AU - 1.05 AU

Year: 532 Days

Day: 14.5 Hours

Environment

Temp: -145 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 45,101,959 km

• M1: 106,663 km (0.088 R)
• M2: 401,670 km (0.083 R)
• M3: 934,239 km (0.088 R)
• M4: 1,373,458 km (0.091 R)
• M5: 1,734,737 km (0.1 R)
• M6: 2,828,297 km (0.083 R)
• M7: 3,225,629 km (0.059 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 31.9

Radius: 10.3

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.98 AU - 1.08 AU

Year: 686 Days

Day: 13.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 45,101,959 km

• M1: 129,103 km (0.093 R)
• M2: 546,182 km (0.116 R)
• M3: 872,455 km (0.113 R)
• M4: 1,354,609 km (0.068 R)
• M5: 1,946,268 km (0.07 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 665.5

Radius: 11.4

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 2.25 AU - 2.99 AU

Year: 2782 Days

Day: 5.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 45,101,959 km

• M1: 141,819 km (0.108 R)
• M2: 616,642 km (0.108 R)
• M3: 1,018,014 km (0.116 R)
• M4: 2,281,218 km (0.073 R)
• M5: 2,869,886 km (0.098 R)
• M6: 3,287,563 km (0.065 R)
• M7: 3,688,784 km (0.065 R)
• M8: 5,658,839 km (0.11 R)
• M9: 6,292,834 km (0.066 R)
• M10: 7,332,091 km (0.106 R)
• M11: 7,734,360 km (0.109 R)
• M12: 9,349,119 km (0.094 R)
• M13: 9,934,346 km (0.097 R)
• M14: 10,660,793 km (0.119 R)
• M15: 12,305,921 km (0.102 R)
• M16: 13,692,843 km (0.04 R)
• M17: 14,983,274 km (0.081 R)
• M18: 15,938,905 km (0.069 R)
• M19: 19,516,837 km (0.081 R)
• M20: 20,171,178 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 854.4

Radius: 13.3

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 3.07 AU - 3.45 AU

Year: 3861 Days

Day: 12.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 45,101,959 km

• M1: 165,455 km (0.069 R)
• M2: 665,711 km (0.034 R)
• M3: 1,215,483 km (0.116 R)
• M4: 1,892,862 km (0.042 R)
• M5: 2,529,700 km (0.117 R)
• M6: 3,006,917 km (0.079 R)
• M7: 4,100,478 km (0.099 R)
• M8: 4,890,205 km (0.099 R)
• M9: 5,778,966 km (0.118 R)
• M10: 7,227,672 km (0.11 R)
• M11: 7,668,237 km (0.091 R)
• M12: 9,981,020 km (0.1 R)
• M13: 11,500,935 km (0.042 R)
• M14: 13,170,148 km (0.057 R)
• M15: 13,675,489 km (0.037 R)
• M16: 15,491,159 km (0.118 R)
• M17: 17,103,076 km (0.09 R)
• M18: 19,272,095 km (0.116 R)
• M19: 19,727,022 km (0.095 R)
• M20: 21,203,553 km (0.115 R)
• M21: 27,359,955 km (0.092 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 53.5

Radius: 5.1

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 4.53 AU - 7.33 AU

Year: 9473 Days

Day: 23.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,101,959 km

• M1: 63,429 km (0.096 R)
• M2: 524,191 km (0.086 R)
• M3: 929,900 km (0.088 R)
• M4: 1,170,155 km (0.07 R)
• M5: 1,906,774 km (0.036 R)
• M6: 3,504,480 km (0.07 R)
• M7: 4,007,278 km (0.06 R)
• M8: 4,578,892 km (0.077 R)
• M9: 5,573,867 km (0.048 R)
• M10: 8,046,121 km (0.057 R)
• M11: 12,118,624 km (0.114 R)
• M12: 12,289,914 km (0.068 R)
• M13: 16,687,942 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 578.5

Radius: 4.6

Gravity: 27.34 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 5.47 AU - 6.77 AU

Year: 9932 Days

Day: 17.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 45,101,959 km

• M1: 69,563 km (0.112 R)
• M2: 761,004 km (0.102 R)
• M3: 1,386,174 km (0.076 R)
• M4: 3,230,416 km (0.111 R)
• M5: 3,739,498 km (0.108 R)
• M6: 8,355,340 km (0.086 R)
• M7: 8,620,577 km (0.067 R)
• M8: 10,740,828 km (0.108 R)
• M9: 12,657,476 km (0.109 R)
• M10: 13,007,385 km (0.102 R)
• M11: 13,849,172 km (0.087 R)
• M12: 14,598,957 km (0.094 R)
• M13: 15,441,492 km (0.06 R)
• M14: 20,382,261 km (0.117 R)
• M15: 22,861,696 km (0.099 R)
• M16: 31,919,548 km (0.059 R)
• M17: 34,564,289 km (0.085 R)
• M18: 36,056,079 km (0.072 R)
• M19: 37,232,367 km (0.085 R)
• M20: 41,550,958 km (0.048 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 481 - 12,256 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit