🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.96

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.45 AU - 0.59 AU

Year: 238 Days

Day: 25.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 16.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 42,256,628 km

• M1: 57,296 km (0.088 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.93

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.53 AU - 0.57 AU

Year: 259 Days

Day: 23.4 Hours

Environment

Temp: -112 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 768.3

Radius: 12.8

Gravity: 4.69 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.67 AU - 0.89 AU

Year: 438 Days

Day: 8.6 Hours

Environment

Temp: -153 °C

Axial Tilt: 46 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,256,628 km

• M1: 159,172 km (0.068 R)
• M2: 602,730 km (0.113 R)
• M3: 1,011,880 km (0.054 R)
• M4: 1,561,652 km (0.103 R)
• M5: 2,409,423 km (0.111 R)
• M6: 2,965,628 km (0.072 R)
• M7: 3,422,949 km (0.084 R)
• M8: 3,927,542 km (0.118 R)
• M9: 4,338,189 km (0.114 R)
• M10: 5,610,818 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.5

Radius: 9.3

Gravity: 10.63 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.79 AU - 1.05 AU

Year: 561 Days

Day: 8.6 Hours

Environment

Temp: -153 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,256,628 km

• M1: 115,789 km (0.084 R)
• M2: 477,816 km (0.095 R)
• M3: 1,164,470 km (0.092 R)
• M4: 1,822,850 km (0.088 R)
• M5: 2,350,482 km (0.062 R)
• M6: 2,894,270 km (0.051 R)
• M7: 3,310,451 km (0.066 R)
• M8: 4,053,504 km (0.073 R)
• M9: 4,754,220 km (0.096 R)
• M10: 5,073,462 km (0.109 R)
• M11: 5,680,530 km (0.081 R)
• M12: 6,157,299 km (0.095 R)
• M13: 6,496,587 km (0.072 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 539.7

Radius: 13.6

Gravity: 2.92 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.9 AU - 1.24 AU

Year: 704 Days

Day: 7.6 Hours

Environment

Temp: -171 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 42,256,628 km

• M1: 169,195 km (0.106 R)
• M2: 688,749 km (0.091 R)
• M3: 1,153,400 km (0.099 R)
• M4: 2,338,514 km (0.113 R)
• M5: 3,471,867 km (0.113 R)
• M6: 4,281,341 km (0.113 R)
• M7: 7,048,752 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 130.7

Radius: 11.9

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 1.63 AU - 1.73 AU

Year: 1385 Days

Day: 7.3 Hours

Environment

Temp: -174 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,256,628 km

• M1: 148,102 km (0.073 R)
• M2: 621,729 km (0.079 R)
• M3: 1,058,106 km (0.091 R)
• M4: 2,494,544 km (0.059 R)
• M5: 2,883,200 km (0.091 R)
• M6: 3,895,229 km (0.101 R)
• M7: 4,719,214 km (0.103 R)
• M8: 5,181,472 km (0.042 R)
• M9: 5,583,741 km (0.104 R)
• M10: 6,294,330 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 745.3

Radius: 13.4

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 1.72 AU - 2.08 AU

Year: 1665 Days

Day: 11.2 Hours

Environment

Temp: -180 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 42,256,628 km

• M1: 167,550 km (0.118 R)
• M2: 623,524 km (0.115 R)
• M3: 1,449,454 km (0.075 R)
• M4: 1,891,964 km (0.069 R)
• M5: 2,870,484 km (0.088 R)
• M6: 3,385,699 km (0.095 R)
• M7: 3,998,452 km (0.056 R)
• M8: 4,466,843 km (0.078 R)
• M9: 5,314,913 km (0.119 R)
• M10: 6,798,475 km (0.108 R)
• M11: 7,580,573 km (0.11 R)
• M12: 8,482,050 km (0.12 R)
• M13: 9,683,321 km (0.089 R)
• M14: 10,994,995 km (0.118 R)
• M15: 11,469,968 km (0.109 R)
• M16: 12,344,068 km (0.074 R)
• M17: 13,018,156 km (0.084 R)
• M18: 13,633,303 km (0.083 R)
• M19: 14,570,533 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 951.4

Radius: 14.5

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 4.45 AU - 5.47 AU

Year: 7024 Days

Day: 14.7 Hours

Environment

Temp: -211 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 42,256,628 km

• M1: 180,565 km (0.108 R)
• M2: 911,350 km (0.095 R)
• M3: 1,397,843 km (0.118 R)
• M4: 1,848,730 km (0.1 R)
• M5: 2,853,131 km (0.045 R)
• M6: 3,320,026 km (0.11 R)
• M7: 3,838,382 km (0.106 R)
• M8: 4,302,584 km (0.104 R)
• M9: 5,439,827 km (0.073 R)
• M10: 8,690,739 km (0.101 R)
• M11: 9,223,457 km (0.106 R)
• M12: 9,730,893 km (0.036 R)
• M13: 10,354,566 km (0.068 R)
• M14: 11,735,504 km (0.088 R)
• M15: 13,823,292 km (0.107 R)
• M16: 20,070,948 km (0.106 R)
• M17: 22,293,823 km (0.117 R)
• M18: 23,126,185 km (0.05 R)
• M19: 25,657,381 km (0.107 R)
• M20: 32,731,416 km (0.086 R)
• M21: 34,573,564 km (0.092 R)
• M22: 39,179,084 km (0.115 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 471 - 18,026 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit