🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.47 AU - 0.67 AU

Year: 282 Days

Day: 18.3 Hours

Environment

Temp: -134 °C

Axial Tilt: 3.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 420.8

Radius: 13.8

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.61 AU - 0.97 AU

Year: 461 Days

Day: 9.5 Hours

Environment

Temp: -152 °C

Axial Tilt: 101.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 9,279,979 km

• M1: 171,589 km (0.08 R)
• M2: 694,134 km (0.099 R)
• M3: 1,216,979 km (0.063 R)
• M4: 1,886,429 km (0.119 R)
• M5: 2,421,242 km (0.1 R)
• M6: 2,943,488 km (0.103 R)
• M7: 3,495,055 km (0.081 R)
• M8: 4,337,889 km (0.097 R)
• M9: 4,938,076 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 379.2

Radius: 13.7

Gravity: 2.02 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.9 AU - 1.16 AU

Year: 686 Days

Day: 10.3 Hours

Environment

Temp: -163 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 9,279,979 km

• M1: 170,392 km (0.104 R)
• M2: 646,263 km (0.091 R)
• M3: 1,110,465 km (0.108 R)
• M4: 1,628,373 km (0.117 R)
• M5: 2,085,095 km (0.115 R)
• M6: 3,301,475 km (0.069 R)
• M7: 3,869,798 km (0.062 R)
• M8: 4,385,611 km (0.103 R)
• M9: 5,303,843 km (0.086 R)
• M10: 6,555,379 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 198.9

Radius: 11.7

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.95 AU - 1.17 AU

Year: 716 Days

Day: 11.2 Hours

Environment

Temp: -163 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 9,279,979 km

• M1: 145,559 km (0.112 R)
• M2: 657,333 km (0.113 R)
• M3: 1,296,116 km (0.062 R)
• M4: 1,719,179 km (0.112 R)
• M5: 2,167,224 km (0.074 R)
• M6: 4,402,815 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.9

Radius: 10.7

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 1.3 AU - 1.86 AU

Year: 1303 Days

Day: 7.4 Hours

Environment

Temp: -176 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 9,279,979 km

• M1: 133,142 km (0.041 R)
• M2: 482,154 km (0.083 R)
• M3: 879,037 km (0.115 R)
• M4: 1,352,814 km (0.106 R)
• M5: 1,917,994 km (0.094 R)
• M6: 2,384,590 km (0.044 R)
• M7: 2,903,994 km (0.094 R)
• M8: 3,409,934 km (0.067 R)
• M9: 4,943,761 km (0.118 R)
• M10: 6,615,966 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 548.9

Radius: 11.5

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.83 AU - 2.43 AU

Year: 2039 Days

Day: 13 Hours

Environment

Temp: -192 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 9,279,979 km

• M1: 143,016 km (0.085 R)
• M2: 555,606 km (0.065 R)
• M3: 1,084,884 km (0.12 R)
• M4: 1,929,962 km (0.06 R)
• M5: 2,418,100 km (0.075 R)
• M6: 2,943,488 km (0.038 R)
• M7: 3,820,430 km (0.07 R)
• M8: 4,281,940 km (0.115 R)
• M9: 4,969,342 km (0.068 R)
• M10: 6,235,688 km (0.103 R)
• M11: 6,798,475 km (0.083 R)
• M12: 7,451,021 km (0.099 R)
• M13: 7,850,597 km (0.109 R)
• M14: 8,507,481 km (0.052 R)
• M15: 10,415,752 km (0.064 R)
• M16: 11,025,513 km (0.115 R)
• M17: 13,286,684 km (0.075 R)
• M18: 14,263,559 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 863.4

Radius: 11

Gravity: 7.14 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 2.59 AU - 2.95 AU

Year: 3024 Days

Day: 10.6 Hours

Environment

Temp: -204 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 9,279,979 km

• M1: 136,882 km (0.084 R)
• M2: 486,343 km (0.073 R)
• M3: 868,565 km (0.079 R)
• M4: 1,255,276 km (0.069 R)
• M5: 1,621,043 km (0.107 R)
• M6: 2,208,214 km (0.117 R)
• M7: 3,870,396 km (0.113 R)
• M8: 5,096,351 km (0.056 R)
• M9: 6,744,022 km (0.077 R)
• M10: 7,301,124 km (0.084 R)
• M11: 7,989,873 km (0.112 R)
• M12: 8,472,625 km (0.043 R)
• M13: 8,829,266 km (0.101 R)
• M14: 11,398,610 km (0.101 R)
• M15: 12,599,432 km (0.1 R)
• M16: 13,931,900 km (0.119 R)
• M17: 14,734,343 km (0.111 R)
• M18: 16,596,986 km (0.061 R)
• M19: 17,156,781 km (0.059 R)
• M20: 21,566,478 km (0.062 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 38.4

Radius: 10.9

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 2.85 AU - 3.37 AU

Year: 3598 Days

Day: 12.6 Hours

Environment

Temp: -206 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 9,279,979 km

• M1: 138,378 km (0.102 R)
• M2: 527,632 km (0.088 R)
• M3: 898,634 km (0.074 R)
• M4: 1,707,360 km (0.094 R)
• M5: 2,201,033 km (0.067 R)
• M6: 2,824,707 km (0.081 R)
• M7: 4,310,214 km (0.037 R)
• M8: 4,782,494 km (0.112 R)
• M9: 5,402,129 km (0.097 R)
• M10: 5,851,072 km (0.087 R)
• M11: 7,706,534 km (0.103 R)
• M12: 8,050,310 km (0.075 R)
• M13: 8,663,362 km (0.072 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: 226 - 10,773 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit