🌌 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: 4.44

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.47 AU - 0.55 AU

Year: 235 Days

Day: 36.7 Hours

Environment

Temp: -108 °C

Axial Tilt: 16.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 152.1

Radius: 14.3

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.69 AU - 1.05 AU

Year: 524 Days

Day: 11.8 Hours

Environment

Temp: -158 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 78,153,105 km

• M1: 177,872 km (0.106 R)
• M2: 637,885 km (0.053 R)
• M3: 1,149,660 km (0.115 R)
• M4: 1,883,886 km (0.082 R)
• M5: 2,408,077 km (0.042 R)
• M6: 2,889,932 km (0.086 R)
• M7: 3,846,909 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 156.5

Radius: 14.1

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.44 AU - 1.6 AU

Year: 1210 Days

Day: 13.7 Hours

Environment

Temp: -182 °C

Axial Tilt: 114.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 78,153,105 km

• M1: 175,478 km (0.111 R)
• M2: 667,954 km (0.11 R)
• M3: 1,396,945 km (0.093 R)
• M4: 2,185,924 km (0.037 R)
• M5: 3,220,992 km (0.082 R)
• M6: 3,891,789 km (0.098 R)
• M7: 5,022,749 km (0.097 R)
• M8: 5,891,613 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202.4

Radius: 14

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 5.18 AU - 5.78 AU

Year: 8283 Days

Day: 12.5 Hours

Environment

Temp: -226 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 78,153,105 km

• M1: 174,730 km (0.076 R)
• M2: 808,427 km (0.082 R)
• M3: 1,373,907 km (0.076 R)
• M4: 2,046,798 km (0.104 R)
• M5: 3,307,759 km (0.114 R)
• M6: 3,864,412 km (0.116 R)
• M7: 6,009,496 km (0.073 R)
• M8: 7,204,633 km (0.103 R)
• M9: 12,751,423 km (0.107 R)
• M10: 18,920,989 km (0.1 R)

Planet 5 - Ice Giant

Semi-Major Axis: 10.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 640.5

Radius: 6.4

Gravity: 15.64 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 8.72 AU - 12 AU

Year: 21531 Days

Day: 15.6 Hours

Environment

Temp: -224 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 78,153,105 km

• M1: 79,586 km (0.054 R)
• M2: 298,448 km (0.101 R)
• M3: 834,008 km (0.119 R)
• M4: 1,549,086 km (0.05 R)
• M5: 1,811,929 km (0.065 R)
• M6: 2,686,179 km (0.111 R)
• M7: 3,602,167 km (0.081 R)
• M8: 5,038,905 km (0.063 R)
• M9: 5,499,966 km (0.088 R)
• M10: 5,988,702 km (0.034 R)
• M11: 7,194,012 km (0.084 R)
• M12: 7,980,149 km (0.073 R)
• M13: 10,375,360 km (0.057 R)
• M14: 11,120,807 km (0.081 R)
• M15: 14,538,220 km (0.116 R)
• M16: 20,642,113 km (0.11 R)
• M17: 23,143,090 km (0.086 R)
• M18: 30,202,613 km (0.116 R)
• M19: 33,413,732 km (0.084 R)
• M20: 37,991,127 km (0.079 R)
• M21: 40,053,184 km (0.104 R)
• M22: 42,344,126 km (0.116 R)
• M23: 44,720,937 km (0.078 R)
• M24: 45,369,593 km (0.086 R)
• M25: 46,851,660 km (0.108 R)
• M26: 51,846,583 km (0.06 R)
• M27: 55,677,485 km (0.114 R)
• M28: 59,692,842 km (0.045 R)
• M29: 61,670,974 km (0.058 R)
• M30: 68,294,270 km (0.105 R)
• M31: 74,465,183 km (0.081 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 395 - 11,010 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit