🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.03

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.39 AU - 0.63 AU

Year: 239 Days

Day: 36.3 Hours

Environment

Temp: -108 °C

Axial Tilt: 41.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.93

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.57 AU - 0.61 AU

Year: 297 Days

Day: 36.3 Hours

Environment

Temp: -120 °C

Axial Tilt: 19 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.48 AU - 0.78 AU

Year: 328 Days

Day: 21.6 Hours

Environment

Temp: -124 °C

Axial Tilt: 36.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 984.4

Radius: 12.6

Gravity: 6.2 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.87 AU - 1.21 AU

Year: 696 Days

Day: 13.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 43,427,664 km

• M1: 157,676 km (0.037 R)
• M2: 608,564 km (0.095 R)
• M3: 1,308,084 km (0.051 R)
• M4: 1,813,425 km (0.074 R)
• M5: 2,238,433 km (0.083 R)
• M6: 2,660,897 km (0.104 R)
• M7: 3,294,744 km (0.049 R)
• M8: 4,183,056 km (0.093 R)
• M9: 4,726,994 km (0.072 R)
• M10: 5,957,286 km (0.07 R)
• M11: 6,433,008 km (0.099 R)
• M12: 6,845,000 km (0.111 R)
• M13: 7,367,396 km (0.072 R)
• M14: 8,014,556 km (0.09 R)
• M15: 8,725,445 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 122.2

Radius: 12.5

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 1.98 AU - 2.88 AU

Year: 2485 Days

Day: 5.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 43,427,664 km

• M1: 156,928 km (0.09 R)
• M2: 732,132 km (0.089 R)
• M3: 1,303,297 km (0.058 R)
• M4: 2,174,405 km (0.074 R)
• M5: 2,672,416 km (0.06 R)
• M6: 4,094,643 km (0.049 R)
• M7: 5,536,468 km (0.108 R)
• M8: 7,919,711 km (0.06 R)
• M9: 9,777,268 km (0.103 R)
• M10: 10,571,034 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 219.3

Radius: 11.9

Gravity: 1.55 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 2.34 AU - 2.76 AU

Year: 2671 Days

Day: 9.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 43,427,664 km

• M1: 150,944 km (0.06 R)
• M2: 627,114 km (0.08 R)
• M3: 1,325,437 km (0.12 R)
• M4: 1,711,400 km (0.109 R)
• M5: 2,349,734 km (0.088 R)
• M6: 3,448,081 km (0.091 R)
• M7: 3,928,440 km (0.109 R)
• M8: 4,415,381 km (0.105 R)
• M9: 5,274,522 km (0.058 R)
• M10: 6,170,763 km (0.057 R)
• M11: 6,831,237 km (0.075 R)
• M12: 7,218,247 km (0.048 R)
• M13: 8,207,238 km (0.086 R)
• M14: 10,933,959 km (0.067 R)
• M15: 11,393,075 km (0.054 R)
• M16: 11,828,404 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 930.7

Radius: 6

Gravity: 25.85 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 5.47 AU - 8.73 AU

Year: 12411 Days

Day: 18.4 Hours

Environment

Temp: -232 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 43,427,664 km

• M1: 74,649 km (0.106 R)
• M2: 425,756 km (0.029 R)
• M3: 800,349 km (0.106 R)
• M4: 1,201,420 km (0.065 R)
• M5: 2,176,799 km (0.076 R)
• M6: 5,580,749 km (0.079 R)
• M7: 6,678,947 km (0.041 R)
• M8: 8,293,556 km (0.038 R)
• M9: 9,139,832 km (0.073 R)
• M10: 9,347,025 km (0.062 R)
• M11: 12,779,548 km (0.088 R)
• M12: 13,104,175 km (0.11 R)
• M13: 13,434,338 km (0.073 R)
• M14: 15,459,594 km (0.119 R)
• M15: 17,679,776 km (0.114 R)
• M16: 19,414,363 km (0.103 R)
• M17: 21,899,333 km (0.11 R)
• M18: 23,313,931 km (0.088 R)
• M19: 24,290,356 km (0.081 R)
• M20: 28,468,924 km (0.117 R)
• M21: 31,310,236 km (0.073 R)
• M22: 39,845,243 km (0.073 R)
• M23: 41,521,487 km (0.051 R)
• M24: 43,244,256 km (0.114 R)
• M25: 45,313,793 km (0.097 R)
• M26: 49,808,611 km (0.093 R)
• M27: 51,099,042 km (0.084 R)
• M28: 53,746,177 km (0.082 R)
• M29: 57,533,546 km (0.104 R)
• M30: 58,418,417 km (0.084 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 266.5

Radius: 3.6

Gravity: 20.56 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 7.23 AU - 8.03 AU

Year: 13826 Days

Day: 21.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 43,427,664 km

• M1: 45,179 km (0.048 R)
• M2: 273,315 km (0.062 R)
• M3: 558,898 km (0.113 R)
• M4: 6,109,577 km (0.1 R)
• M5: 6,952,262 km (0.074 R)
• M6: 9,556,761 km (0.11 R)
• M7: 10,534,981 km (0.092 R)
• M8: 12,860,480 km (0.052 R)
• M9: 19,239,633 km (0.061 R)
• M10: 20,395,575 km (0.112 R)
• M11: 25,574,803 km (0.057 R)
• M12: 25,849,914 km (0.099 R)
• M13: 32,094,428 km (0.115 R)
• M14: 38,547,183 km (0.084 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 400 - 13,367 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit