🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.8

Radius: 0.91

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.48 AU - 0.68 AU

Year: 285 Days

Day: 23.2 Hours

Environment

Temp: -135 °C

Axial Tilt: 8.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,029,074 km

• M1: 105,018 km (0.07 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.54 AU - 0.78 AU

Year: 346 Days

Day: 47.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 32.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 462.8

Radius: 12.5

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.74 AU - 1.12 AU

Year: 579 Days

Day: 10.1 Hours

Environment

Temp: -148 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 51,029,074 km

• M1: 156,031 km (0.097 R)
• M2: 636,838 km (0.108 R)
• M3: 1,111,512 km (0.096 R)
• M4: 1,661,733 km (0.093 R)
• M5: 2,069,088 km (0.111 R)
• M6: 3,454,963 km (0.117 R)
• M7: 3,952,825 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 617.1

Radius: 11.8

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.84 AU - 1.2 AU

Year: 665 Days

Day: 12.9 Hours

Environment

Temp: -152 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 51,029,074 km

• M1: 146,756 km (0.115 R)
• M2: 627,264 km (0.072 R)
• M3: 1,176,737 km (0.063 R)
• M4: 1,669,662 km (0.039 R)
• M5: 2,438,894 km (0.111 R)
• M6: 2,871,082 km (0.037 R)
• M7: 3,457,356 km (0.068 R)
• M8: 3,919,913 km (0.111 R)
• M9: 4,301,388 km (0.085 R)
• M10: 4,788,777 km (0.12 R)
• M11: 5,243,106 km (0.081 R)
• M12: 6,026,401 km (0.097 R)
• M13: 6,597,416 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 873.4

Radius: 12.6

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.49 AU - 1.59 AU

Year: 1234 Days

Day: 10.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 51,029,074 km

• M1: 157,527 km (0.088 R)
• M2: 562,039 km (0.095 R)
• M3: 1,154,447 km (0.076 R)
• M4: 1,672,355 km (0.084 R)
• M5: 2,367,685 km (0.047 R)
• M6: 3,749,222 km (0.084 R)
• M7: 4,410,444 km (0.097 R)
• M8: 5,355,454 km (0.077 R)
• M9: 6,242,420 km (0.032 R)
• M10: 6,745,966 km (0.08 R)
• M11: 7,224,829 km (0.095 R)
• M12: 7,726,431 km (0.113 R)
• M13: 10,828,193 km (0.057 R)
• M14: 11,988,175 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.7

Radius: 14.4

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 2.47 AU - 3.01 AU

Year: 2928 Days

Day: 13.3 Hours

Environment

Temp: -207 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 51,029,074 km

• M1: 179,966 km (0.041 R)
• M2: 643,720 km (0.07 R)
• M3: 1,865,336 km (0.108 R)
• M4: 2,651,323 km (0.091 R)
• M5: 3,122,556 km (0.1 R)
• M6: 4,104,966 km (0.101 R)
• M7: 5,582,394 km (0.083 R)
• M8: 6,771,996 km (0.063 R)
• M9: 7,292,896 km (0.067 R)
• M10: 7,840,574 km (0.102 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 425.9

Radius: 4.3

Gravity: 23.03 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 6.78 AU - 8.72 AU

Year: 13931 Days

Day: 24.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 51,029,074 km

• M1: 53,556 km (0.045 R)
• M2: 190,438 km (0.077 R)
• M3: 376,239 km (0.113 R)
• M4: 546,032 km (0.089 R)
• M5: 821,592 km (0.116 R)
• M6: 1,148,612 km (0.046 R)
• M7: 1,557,463 km (0.074 R)
• M8: 2,372,772 km (0.111 R)
• M9: 2,635,615 km (0.107 R)
• M10: 3,147,689 km (0.045 R)
• M11: 3,994,263 km (0.089 R)
• M12: 4,575,900 km (0.089 R)
• M13: 4,760,803 km (0.076 R)
• M14: 5,905,077 km (0.093 R)
• M15: 6,050,635 km (0.058 R)
• M16: 6,579,614 km (0.078 R)
• M17: 8,674,133 km (0.106 R)
• M18: 9,150,303 km (0.108 R)
• M19: 11,510,509 km (0.109 R)
• M20: 14,378,151 km (0.108 R)
• M21: 15,591,988 km (0.096 R)
• M22: 16,945,400 km (0.109 R)
• M23: 19,239,034 km (0.079 R)
• M24: 20,294,148 km (0.084 R)
• M25: 23,144,586 km (0.082 R)
• M26: 27,143,935 km (0.107 R)
• M27: 31,358,855 km (0.069 R)
• M28: 33,853,101 km (0.117 R)
• M29: 37,338,731 km (0.088 R)
• M30: 47,592,019 km (0.074 R)
• M31: 51,029,030 km (0.072 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: 306 - 13,113 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit