🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.5 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.74

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.76 AU - 1.22 AU

Year: 415 Days

Day: 31.6 Hours

Environment

Temp: -50 °C

Axial Tilt: 6.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.37

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.77 AU - 2.91 AU

Year: 1510 Days

Day: 20.2 Hours

Environment

Temp: -124 °C

Axial Tilt: 21 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 3.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 841.2

Radius: 11.2

Gravity: 6.71 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.9 AU - 4.08 AU

Year: 3361 Days

Day: 10.8 Hours

Environment

Temp: -151 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 19,664,317 km

• M1: 139,425 km (0.108 R)
• M2: 489,035 km (0.089 R)
• M3: 1,179,280 km (0.085 R)
• M4: 1,754,334 km (0.054 R)
• M5: 2,572,635 km (0.093 R)
• M6: 3,096,078 km (0.107 R)
• M7: 4,177,969 km (0.12 R)
• M8: 4,781,597 km (0.093 R)
• M9: 7,265,819 km (0.051 R)
• M10: 7,762,035 km (0.118 R)
• M11: 8,494,765 km (0.074 R)
• M12: 11,625,550 km (0.095 R)
• M13: 12,491,123 km (0.066 R)
• M14: 13,011,724 km (0.039 R)
• M15: 13,448,250 km (0.119 R)
• M16: 14,146,872 km (0.056 R)
• M17: 15,293,241 km (0.12 R)
• M18: 16,054,544 km (0.118 R)
• M19: 17,301,443 km (0.038 R)
• M20: 17,948,603 km (0.102 R)
• M21: 19,229,011 km (0.075 R)
• M22: 19,987,472 km (0.119 R)
• M23: 21,029,571 km (0.119 R)
• M24: 22,939,936 km (0.069 R)
• M25: 24,741,094 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 692.3

Radius: 9.7

Gravity: 7.36 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 4.43 AU - 4.83 AU

Year: 4202 Days

Day: 13.2 Hours

Environment

Temp: -172 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 19,664,317 km

• M1: 120,725 km (0.074 R)
• M2: 422,614 km (0.059 R)
• M3: 838,795 km (0.115 R)
• M4: 1,437,785 km (0.075 R)
• M5: 2,769,805 km (0.06 R)
• M6: 3,559,981 km (0.102 R)
• M7: 4,813,162 km (0.112 R)
• M8: 5,281,254 km (0.057 R)
• M9: 6,158,496 km (0.074 R)
• M10: 7,064,460 km (0.117 R)
• M11: 10,105,935 km (0.105 R)
• M12: 11,318,575 km (0.099 R)
• M13: 11,913,376 km (0.025 R)
• M14: 17,447,450 km (0.109 R)
• M15: 19,123,096 km (0.088 R)
• M16: 23,299,270 km (0.085 R)
• M17: 26,266,095 km (0.047 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 248.1

Radius: 11.1

Gravity: 2.01 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 3.98 AU - 5.52 AU

Year: 4366 Days

Day: 6.6 Hours

Environment

Temp: -170 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 19,664,317 km

• M1: 138,827 km (0.113 R)
• M2: 548,575 km (0.046 R)
• M3: 1,989,502 km (0.108 R)
• M4: 2,549,597 km (0.029 R)
• M5: 2,963,534 km (0.097 R)
• M6: 5,280,805 km (0.111 R)
• M7: 5,726,307 km (0.115 R)
• M8: 7,702,944 km (0.092 R)
• M9: 8,408,747 km (0.099 R)
• M10: 9,157,035 km (0.114 R)
• M11: 10,747,410 km (0.093 R)
• M12: 11,546,861 km (0.057 R)
• M13: 12,003,135 km (0.119 R)
• M14: 14,420,188 km (0.12 R)
• M15: 15,442,240 km (0.117 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 265 - 16,664 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit