🌌 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: 1.45

Radius: 1.16

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 0.49 AU - 0.55 AU

Year: 238 Days

Day: 31.2 Hours

Environment

Temp: -123 °C

Axial Tilt: 19.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,850,525 km

• M1: 131,347 km (0.095 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.14

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.48 AU - 0.58 AU

Year: 245 Days

Day: 22.8 Hours

Environment

Temp: -111 °C

Axial Tilt: 27.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 251.9

Radius: 10.3

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.85 AU - 1.05 AU

Year: 589 Days

Day: 12.1 Hours

Environment

Temp: -151 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 45,850,525 km

• M1: 128,056 km (0.105 R)
• M2: 634,445 km (0.11 R)
• M3: 1,148,164 km (0.1 R)
• M4: 1,874,162 km (0.116 R)
• M5: 2,505,914 km (0.114 R)
• M6: 3,263,029 km (0.049 R)
• M7: 4,258,154 km (0.109 R)
• M8: 4,840,837 km (0.057 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 250.5

Radius: 14.9

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.99 AU - 1.07 AU

Year: 665 Days

Day: 13.1 Hours

Environment

Temp: -160 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 45,850,525 km

• M1: 185,352 km (0.062 R)
• M2: 941,270 km (0.117 R)
• M3: 1,532,331 km (0.074 R)
• M4: 2,353,773 km (0.064 R)
• M5: 3,054,489 km (0.078 R)
• M6: 3,968,084 km (0.102 R)
• M7: 4,462,056 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 700.3

Radius: 10

Gravity: 7 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 1.13 AU - 1.27 AU

Year: 836 Days

Day: 11.6 Hours

Environment

Temp: -158 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 45,850,525 km

• M1: 126,261 km (0.108 R)
• M2: 495,019 km (0.091 R)
• M3: 884,273 km (0.074 R)
• M4: 1,318,107 km (0.084 R)
• M5: 1,775,577 km (0.083 R)
• M6: 2,232,299 km (0.073 R)
• M7: 2,602,105 km (0.119 R)
• M8: 3,234,456 km (0.08 R)
• M9: 4,027,923 km (0.071 R)
• M10: 4,512,620 km (0.108 R)
• M11: 5,331,219 km (0.073 R)
• M12: 5,816,066 km (0.077 R)
• M13: 6,183,179 km (0.042 R)
• M14: 6,785,011 km (0.062 R)
• M15: 7,809,308 km (0.114 R)
• M16: 8,906,758 km (0.06 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.9

Radius: 9.5

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.62 AU - 1.96 AU

Year: 1523 Days

Day: 7.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 45,850,525 km

• M1: 118,332 km (0.044 R)
• M2: 889,808 km (0.084 R)
• M3: 1,783,955 km (0.074 R)
• M4: 2,182,633 km (0.104 R)
• M5: 2,492,899 km (0.086 R)
• M6: 2,793,740 km (0.1 R)
• M7: 3,090,692 km (0.115 R)
• M8: 4,626,015 km (0.041 R)
• M9: 5,122,979 km (0.071 R)
• M10: 5,655,099 km (0.051 R)
• M11: 7,918,514 km (0.054 R)
• M12: 8,886,712 km (0.031 R)
• M13: 9,354,804 km (0.044 R)
• M14: 10,662,139 km (0.063 R)
• M15: 11,495,998 km (0.077 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.7

Radius: 10.4

Gravity: 6.29 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 2.92 AU - 4.12 AU

Year: 4199 Days

Day: 14.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 45,850,525 km

• M1: 129,701 km (0.091 R)
• M2: 480,209 km (0.111 R)
• M3: 1,169,257 km (0.047 R)
• M4: 2,481,529 km (0.082 R)
• M5: 3,465,883 km (0.111 R)
• M6: 4,355,841 km (0.098 R)
• M7: 5,723,615 km (0.054 R)
• M8: 6,521,719 km (0.11 R)
• M9: 6,931,617 km (0.079 R)
• M10: 7,768,468 km (0.1 R)
• M11: 9,402,974 km (0.12 R)
• M12: 10,343,346 km (0.081 R)
• M13: 12,602,424 km (0.109 R)
• M14: 13,795,766 km (0.037 R)
• M15: 14,525,953 km (0.028 R)
• M16: 15,781,079 km (0.109 R)
• M17: 19,201,485 km (0.118 R)
• M18: 19,718,047 km (0.07 R)
• M19: 22,087,976 km (0.114 R)
• M20: 23,745,072 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 179.7

Radius: 4.4

Gravity: 9.28 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 8.58 AU - 10.18 AU

Year: 18266 Days

Day: 15 Hours

Environment

Temp: -229 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 45,850,525 km

• M1: 54,753 km (0.1 R)
• M2: 312,959 km (0.064 R)
• M3: 466,895 km (0.081 R)
• M4: 720,015 km (0.118 R)
• M5: 1,598,004 km (0.086 R)
• M6: 1,776,475 km (0.114 R)
• M7: 2,227,213 km (0.103 R)
• M8: 2,412,266 km (0.111 R)
• M9: 2,647,882 km (0.081 R)
• M10: 4,600,135 km (0.107 R)
• M11: 5,642,832 km (0.037 R)
• M12: 7,468,075 km (0.065 R)
• M13: 11,836,184 km (0.048 R)
• M14: 14,903,688 km (0.059 R)
• M15: 19,143,890 km (0.118 R)
• M16: 23,766,913 km (0.09 R)
• M17: 24,937,367 km (0.088 R)
• M18: 25,120,774 km (0.089 R)
• M19: 28,179,003 km (0.102 R)
• M20: 30,107,469 km (0.074 R)
• M21: 34,565,037 km (0.117 R)
• M22: 36,535,540 km (0.062 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 249 - 11,910 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit