🌌 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: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.59

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.53 AU - 0.61 AU

Year: 282 Days

Day: 24.6 Hours

Environment

Temp: -132 °C

Axial Tilt: 34.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 109.1

Radius: 11.5

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.78 AU - 1.1 AU

Year: 598 Days

Day: 8.4 Hours

Environment

Temp: -148 °C

Axial Tilt: 44 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 55,872,142 km

• M1: 147,055 km (0.117 R)
• M2: 577,149 km (0.098 R)
• M3: 1,204,412 km (0.062 R)
• M4: 1,701,227 km (0.116 R)
• M5: 2,148,225 km (0.118 R)
• M6: 3,019,334 km (0.095 R)
• M7: 3,520,636 km (0.066 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 578.6

Radius: 9.7

Gravity: 6.15 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 2.12 AU - 2.54 AU

Year: 2333 Days

Day: 9.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 55,872,142 km

• M1: 121,773 km (0.107 R)
• M2: 562,787 km (0.065 R)
• M3: 936,183 km (0.059 R)
• M4: 1,348,176 km (0.105 R)
• M5: 1,695,243 km (0.116 R)
• M6: 2,303,658 km (0.068 R)
• M7: 2,717,146 km (0.056 R)
• M8: 3,569,555 km (0.056 R)
• M9: 4,067,716 km (0.113 R)
• M10: 4,611,504 km (0.117 R)
• M11: 5,272,128 km (0.085 R)
• M12: 5,795,571 km (0.051 R)
• M13: 7,142,999 km (0.078 R)
• M14: 8,527,677 km (0.089 R)
• M15: 9,283,595 km (0.065 R)
• M16: 9,976,532 km (0.053 R)
• M17: 10,299,514 km (0.05 R)
• M18: 10,703,728 km (0.12 R)
• M19: 11,233,304 km (0.08 R)
• M20: 11,899,912 km (0.089 R)
• M21: 13,836,157 km (0.109 R)
• M22: 14,464,917 km (0.111 R)
• M23: 17,019,151 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 86.4

Radius: 13.7

Gravity: 0.46 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 2.58 AU - 2.6 AU

Year: 2734 Days

Day: 6.7 Hours

Environment

Temp: -207 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 55,872,142 km

• M1: 170,392 km (0.091 R)
• M2: 682,914 km (0.115 R)
• M3: 1,177,934 km (0.079 R)
• M4: 1,611,169 km (0.11 R)
• M5: 2,601,208 km (0.116 R)
• M6: 3,098,471 km (0.067 R)
• M7: 4,107,658 km (0.088 R)
• M8: 5,173,244 km (0.106 R)
• M9: 9,598,947 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 294.6

Radius: 11.8

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 5.24 AU - 5.28 AU

Year: 7914 Days

Day: 11.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 55,872,142 km

• M1: 146,905 km (0.116 R)
• M2: 583,432 km (0.12 R)
• M3: 1,003,802 km (0.061 R)
• M4: 2,285,706 km (0.106 R)
• M5: 3,184,789 km (0.105 R)
• M6: 3,661,557 km (0.106 R)
• M7: 5,216,927 km (0.068 R)
• M8: 6,126,930 km (0.029 R)
• M9: 6,636,461 km (0.082 R)
• M10: 7,139,708 km (0.038 R)
• M11: 7,704,590 km (0.114 R)
• M12: 9,791,330 km (0.116 R)
• M13: 11,646,045 km (0.077 R)
• M14: 13,458,722 km (0.057 R)
• M15: 14,599,107 km (0.042 R)
• M16: 19,268,355 km (0.089 R)
• M17: 19,948,726 km (0.094 R)
• M18: 21,070,710 km (0.084 R)
• M19: 29,589,860 km (0.047 R)
• M20: 30,040,599 km (0.103 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 50.9

Radius: 3

Gravity: 5.66 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 7.74 AU - 10.47 AU

Year: 18008 Days

Day: 17.9 Hours

Environment

Temp: -230 °C

Axial Tilt: 155.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 55,872,142 km

• M1: 48,919 km (0.108 R)
• M2: 171,140 km (0.094 R)
• M3: 341,682 km (0.083 R)
• M4: 597,943 km (0.106 R)
• M5: 907,760 km (0.109 R)
• M6: 1,534,126 km (0.032 R)
• M7: 2,324,153 km (0.054 R)
• M8: 6,344,296 km (0.116 R)
• M9: 6,899,454 km (0.108 R)
• M10: 7,000,732 km (0.038 R)
• M11: 11,963,043 km (0.075 R)
• M12: 17,009,727 km (0.042 R)
• M13: 18,203,667 km (0.1 R)
• M14: 20,968,086 km (0.101 R)
• M15: 24,154,521 km (0.085 R)
• M16: 24,702,049 km (0.09 R)
• M17: 29,118,627 km (0.088 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 293.1

Radius: 4.9

Gravity: 12.21 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 8.66 AU - 10.36 AU

Year: 19239 Days

Day: 21.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 55,872,142 km

• M1: 75,547 km (0.052 R)
• M2: 311,612 km (0.118 R)
• M3: 570,417 km (0.061 R)
• M4: 881,730 km (0.08 R)
• M5: 1,493,735 km (0.092 R)
• M6: 2,536,881 km (0.11 R)
• M7: 11,120,208 km (0.041 R)
• M8: 11,758,093 km (0.078 R)
• M9: 12,854,047 km (0.111 R)
• M10: 14,016,423 km (0.106 R)
• M11: 23,700,641 km (0.096 R)
• M12: 26,444,565 km (0.1 R)
• M13: 37,835,994 km (0.092 R)
• M14: 50,370,800 km (0.065 R)
• M15: 53,886,948 km (0.116 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 380 - 17,990 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit