🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.38

Radius: 1.14

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.56 AU - 0.62 AU

Year: 293 Days

Day: 32 Hours

Environment

Temp: -124 °C

Axial Tilt: 22.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 26,181,743 km

• M1: 99,782 km (0.119 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24.4

Radius: 12.9

Gravity: 0.15 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.67 AU - 0.89 AU

Year: 445 Days

Day: 6.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 26,181,743 km

• M1: 165,156 km (0.081 R)
• M2: 868,266 km (0.078 R)
• M3: 1,952,701 km (0.075 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 444.3

Radius: 11.3

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.74 AU - 0.88 AU

Year: 471 Days

Day: 10.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 26,181,743 km

• M1: 140,472 km (0.052 R)
• M2: 574,157 km (0.105 R)
• M3: 951,891 km (0.093 R)
• M4: 1,648,269 km (0.041 R)
• M5: 2,292,887 km (0.115 R)
• M6: 2,777,733 km (0.093 R)
• M7: 3,657,967 km (0.057 R)
• M8: 4,163,309 km (0.09 R)
• M9: 4,993,727 km (0.078 R)
• M10: 5,393,302 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 495.1

Radius: 9

Gravity: 6.11 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 2.27 AU - 3.77 AU

Year: 3389 Days

Day: 10.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 26,181,743 km

• M1: 112,049 km (0.113 R)
• M2: 395,836 km (0.104 R)
• M3: 832,363 km (0.097 R)
• M4: 1,123,181 km (0.114 R)
• M5: 1,452,895 km (0.086 R)
• M6: 1,883,437 km (0.116 R)
• M7: 3,423,098 km (0.1 R)
• M8: 5,640,588 km (0.091 R)
• M9: 6,479,383 km (0.111 R)
• M10: 7,245,025 km (0.062 R)
• M11: 7,745,430 km (0.119 R)
• M12: 8,036,996 km (0.098 R)
• M13: 8,991,131 km (0.071 R)
• M14: 10,960,587 km (0.048 R)
• M15: 13,247,490 km (0.117 R)
• M16: 13,806,387 km (0.075 R)
• M17: 14,871,824 km (0.104 R)
• M18: 16,947,793 km (0.085 R)
• M19: 17,773,873 km (0.093 R)
• M20: 19,565,756 km (0.035 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 584.7

Radius: 13.8

Gravity: 3.07 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 2.44 AU - 3.66 AU

Year: 3439 Days

Day: 9.5 Hours

Environment

Temp: -194 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 26,181,743 km

• M1: 171,589 km (0.05 R)
• M2: 673,639 km (0.101 R)
• M3: 1,257,520 km (0.076 R)
• M4: 1,709,305 km (0.092 R)
• M5: 2,973,557 km (0.099 R)
• M6: 3,698,059 km (0.105 R)
• M7: 4,560,341 km (0.116 R)
• M8: 5,125,073 km (0.119 R)
• M9: 5,789,138 km (0.082 R)
• M10: 7,074,483 km (0.083 R)
• M11: 8,542,188 km (0.09 R)
• M12: 9,074,008 km (0.116 R)
• M13: 12,428,142 km (0.071 R)
• M14: 13,065,878 km (0.06 R)
• M15: 14,210,003 km (0.111 R)
• M16: 15,628,041 km (0.085 R)
• M17: 16,861,924 km (0.119 R)
• M18: 17,700,869 km (0.12 R)
• M19: 19,281,071 km (0.114 R)
• M20: 21,532,070 km (0.067 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 170.8

Radius: 12.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 2.88 AU - 4.44 AU

Year: 4521 Days

Day: 11.9 Hours

Environment

Temp: -203 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 26,181,743 km

• M1: 153,487 km (0.087 R)
• M2: 596,148 km (0.04 R)
• M3: 1,737,130 km (0.103 R)
• M4: 2,408,526 km (0.04 R)
• M5: 4,132,342 km (0.093 R)
• M6: 4,749,882 km (0.062 R)
• M7: 5,547,388 km (0.119 R)
• M8: 5,965,963 km (0.116 R)
• M9: 7,585,809 km (0.099 R)
• M10: 8,806,677 km (0.119 R)
• M11: 14,508,151 km (0.079 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 451.4

Radius: 10.7

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 3.67 AU - 4.13 AU

Year: 4973 Days

Day: 11.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 26,181,743 km

• M1: 133,292 km (0.098 R)
• M2: 511,475 km (0.096 R)
• M3: 1,077,703 km (0.117 R)
• M4: 1,463,217 km (0.104 R)
• M5: 2,336,868 km (0.039 R)
• M6: 2,803,165 km (0.105 R)
• M7: 4,326,670 km (0.12 R)
• M8: 5,510,138 km (0.091 R)
• M9: 5,958,782 km (0.087 R)
• M10: 9,260,557 km (0.101 R)
• M11: 9,694,540 km (0.108 R)
• M12: 12,830,261 km (0.103 R)
• M13: 14,495,435 km (0.093 R)
• M14: 15,298,177 km (0.117 R)
• M15: 16,017,594 km (0.077 R)
• M16: 17,763,700 km (0.039 R)
• M17: 18,807,744 km (0.06 R)
• M18: 19,185,927 km (0.095 R)
• M19: 20,549,362 km (0.108 R)
• M20: 23,323,654 km (0.107 R)
• M21: 24,574,891 km (0.043 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 176 - 16,211 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit