🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.31

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.45 AU - 0.67 AU

Year: 275 Days

Day: 13.5 Hours

Environment

Temp: -120 °C

Axial Tilt: 130.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 359.3

Radius: 13.9

Gravity: 1.86 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.62 AU - 0.94 AU

Year: 452 Days

Day: 10.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 14,259,831 km

• M1: 173,833 km (0.076 R)
• M2: 615,595 km (0.09 R)
• M3: 1,179,579 km (0.053 R)
• M4: 1,621,641 km (0.116 R)
• M5: 2,105,740 km (0.079 R)
• M6: 2,604,499 km (0.051 R)
• M7: 3,171,924 km (0.109 R)
• M8: 4,028,072 km (0.118 R)
• M9: 4,694,680 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 873.5

Radius: 8.4

Gravity: 12.38 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.11 AU - 1.21 AU

Year: 820 Days

Day: 14.9 Hours

Environment

Temp: -170 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 14,259,831 km

• M1: 105,167 km (0.075 R)
• M2: 393,592 km (0.083 R)
• M3: 734,825 km (0.057 R)
• M4: 1,118,244 km (0.072 R)
• M5: 1,384,079 km (0.09 R)
• M6: 1,718,730 km (0.108 R)
• M7: 1,987,857 km (0.093 R)
• M8: 2,996,745 km (0.112 R)
• M9: 3,461,246 km (0.108 R)
• M10: 3,988,728 km (0.119 R)
• M11: 4,762,299 km (0.114 R)
• M12: 5,203,912 km (0.108 R)
• M13: 5,473,936 km (0.105 R)
• M14: 5,834,915 km (0.082 R)
• M15: 6,449,912 km (0.096 R)
• M16: 7,344,208 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 745.1

Radius: 14.5

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 1.35 AU - 1.77 AU

Year: 1278 Days

Day: 10.1 Hours

Environment

Temp: -171 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 14,259,831 km

• M1: 180,265 km (0.103 R)
• M2: 639,680 km (0.059 R)
• M3: 1,230,442 km (0.091 R)
• M4: 1,712,148 km (0.092 R)
• M5: 2,790,299 km (0.088 R)
• M6: 3,292,350 km (0.083 R)
• M7: 4,108,257 km (0.034 R)
• M8: 5,443,867 km (0.04 R)
• M9: 7,539,583 km (0.094 R)
• M10: 8,049,113 km (0.038 R)
• M11: 8,696,723 km (0.082 R)
• M12: 9,470,443 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 916.2

Radius: 8.2

Gravity: 13.63 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 1.48 AU - 1.84 AU

Year: 1403 Days

Day: 7.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 14,259,831 km

• M1: 102,026 km (0.107 R)
• M2: 377,585 km (0.109 R)
• M3: 639,082 km (0.052 R)
• M4: 1,070,672 km (0.089 R)
• M5: 1,609,673 km (0.051 R)
• M6: 2,628,435 km (0.113 R)
• M7: 3,608,450 km (0.117 R)
• M8: 4,026,127 km (0.027 R)
• M9: 4,341,031 km (0.119 R)
• M10: 4,793,565 km (0.117 R)
• M11: 5,105,327 km (0.074 R)
• M12: 5,430,552 km (0.08 R)
• M13: 6,390,821 km (0.06 R)
• M14: 8,109,850 km (0.095 R)
• M15: 9,075,804 km (0.119 R)
• M16: 9,816,163 km (0.113 R)
• M17: 11,307,205 km (0.097 R)
• M18: 11,823,767 km (0.058 R)
• M19: 12,087,957 km (0.108 R)
• M20: 13,839,299 km (0.116 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 298 - 19,030 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit