🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.11

Radius: 0.41

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.52 AU - 0.78 AU

Year: 344 Days

Day: 42.8 Hours

Environment

Temp: -140 °C

Axial Tilt: 19.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 664

Radius: 14

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.75 AU - 1.05 AU

Year: 560 Days

Day: 11 Hours

Environment

Temp: -143 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 26,967,704 km

• M1: 174,132 km (0.116 R)
• M2: 723,754 km (0.105 R)
• M3: 1,294,470 km (0.095 R)
• M4: 1,795,474 km (0.047 R)
• M5: 2,312,334 km (0.097 R)
• M6: 2,928,827 km (0.104 R)
• M7: 4,073,400 km (0.102 R)
• M8: 4,709,790 km (0.103 R)
• M9: 5,619,943 km (0.112 R)
• M10: 6,239,278 km (0.071 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 496.3

Radius: 14.7

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.91 AU - 1.21 AU

Year: 716 Days

Day: 11.7 Hours

Environment

Temp: -163 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 26,967,704 km

• M1: 182,809 km (0.06 R)
• M2: 656,735 km (0.04 R)
• M3: 1,329,177 km (0.07 R)
• M4: 1,850,526 km (0.047 R)
• M5: 2,896,364 km (0.085 R)
• M6: 3,631,788 km (0.08 R)
• M7: 4,307,521 km (0.111 R)
• M8: 5,443,119 km (0.063 R)
• M9: 6,234,641 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 432.4

Radius: 10.4

Gravity: 4 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.04 AU - 1.46 AU

Year: 917 Days

Day: 12.8 Hours

Environment

Temp: -162 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 26,967,704 km

• M1: 129,851 km (0.113 R)
• M2: 519,853 km (0.088 R)
• M3: 844,929 km (0.08 R)
• M4: 1,189,303 km (0.102 R)
• M5: 1,637,648 km (0.086 R)
• M6: 2,506,512 km (0.098 R)
• M7: 2,964,581 km (0.041 R)
• M8: 3,587,806 km (0.098 R)
• M9: 4,035,253 km (0.117 R)
• M10: 4,375,139 km (0.09 R)
• M11: 4,938,375 km (0.09 R)
• M12: 5,438,032 km (0.104 R)
• M13: 5,971,049 km (0.116 R)
• M14: 6,414,009 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 184.6

Radius: 13.4

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 1.54 AU - 1.74 AU

Year: 1378 Days

Day: 7.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 26,967,704 km

• M1: 166,652 km (0.066 R)
• M2: 1,633,908 km (0.074 R)
• M3: 2,389,078 km (0.054 R)
• M4: 3,087,550 km (0.059 R)
• M5: 4,743,748 km (0.081 R)
• M6: 6,696,898 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 752

Radius: 14.3

Gravity: 3.68 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 3.35 AU - 3.53 AU

Year: 4185 Days

Day: 10.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 26,967,704 km

• M1: 177,872 km (0.05 R)
• M2: 981,063 km (0.11 R)
• M3: 1,910,963 km (0.093 R)
• M4: 2,616,616 km (0.082 R)
• M5: 3,412,028 km (0.089 R)
• M6: 4,316,946 km (0.097 R)
• M7: 4,953,933 km (0.107 R)
• M8: 6,295,527 km (0.091 R)
• M9: 7,486,027 km (0.093 R)
• M10: 7,938,261 km (0.07 R)
• M11: 8,482,798 km (0.087 R)
• M12: 9,406,265 km (0.103 R)
• M13: 10,915,857 km (0.112 R)
• M14: 13,023,542 km (0.058 R)
• M15: 14,252,638 km (0.093 R)
• M16: 15,059,270 km (0.108 R)
• M17: 15,557,730 km (0.116 R)
• M18: 16,763,937 km (0.045 R)
• M19: 17,908,062 km (0.076 R)
• M20: 23,672,666 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 433.1

Radius: 12.5

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 3.31 AU - 4.75 AU

Year: 5307 Days

Day: 5.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 26,967,704 km

• M1: 159,471 km (0.119 R)
• M2: 750,383 km (0.083 R)
• M3: 2,127,731 km (0.119 R)
• M4: 2,614,971 km (0.04 R)
• M5: 5,468,401 km (0.116 R)
• M6: 6,151,913 km (0.115 R)
• M7: 7,587,006 km (0.085 R)
• M8: 8,328,413 km (0.096 R)
• M9: 9,590,570 km (0.114 R)
• M10: 11,603,110 km (0.046 R)
• M11: 15,320,767 km (0.095 R)
• M12: 16,679,714 km (0.088 R)
• M13: 18,303,000 km (0.119 R)
• M14: 22,283,500 km (0.097 R)
• M15: 23,655,463 km (0.116 R)
• M16: 24,475,259 km (0.096 R)
• M17: 25,701,213 km (0.085 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: 376 - 12,413 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit