🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.49 AU - 0.71 AU

Year: 300 Days

Day: 20.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 36.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,927,098 km

• M1: 77,641 km (0.08 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 433.8

Radius: 9.1

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.79 AU - 1.09 AU

Year: 588 Days

Day: 14.5 Hours

Environment

Temp: -146 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,927,098 km

• M1: 113,246 km (0.101 R)
• M2: 516,262 km (0.062 R)
• M3: 972,835 km (0.091 R)
• M4: 1,300,005 km (0.104 R)
• M5: 1,686,118 km (0.107 R)
• M6: 2,018,823 km (0.028 R)
• M7: 2,734,051 km (0.117 R)
• M8: 3,220,244 km (0.119 R)
• M9: 4,408,948 km (0.119 R)
• M10: 4,705,451 km (0.098 R)
• M11: 5,191,495 km (0.107 R)
• M12: 5,676,192 km (0.107 R)
• M13: 6,027,747 km (0.033 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.5

Radius: 9.7

Gravity: 2.85 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 1.06 AU - 1.28 AU

Year: 817 Days

Day: 10.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 45,927,098 km

• M1: 120,875 km (0.112 R)
• M2: 482,154 km (0.079 R)
• M3: 811,269 km (0.097 R)
• M4: 1,187,807 km (0.084 R)
• M5: 1,542,504 km (0.075 R)
• M6: 2,195,947 km (0.049 R)
• M7: 2,612,428 km (0.048 R)
• M8: 4,405,807 km (0.106 R)
• M9: 4,927,455 km (0.109 R)
• M10: 5,387,468 km (0.048 R)
• M11: 6,057,667 km (0.112 R)
• M12: 6,508,854 km (0.046 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.2

Radius: 13.5

Gravity: 4.54 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.01 AU - 1.55 AU

Year: 935 Days

Day: 9.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,927,098 km

• M1: 167,849 km (0.111 R)
• M2: 671,246 km (0.117 R)
• M3: 1,623,436 km (0.051 R)
• M4: 2,437,548 km (0.104 R)
• M5: 2,868,838 km (0.072 R)
• M6: 3,480,544 km (0.119 R)
• M7: 4,261,445 km (0.11 R)
• M8: 5,369,217 km (0.099 R)
• M9: 6,022,960 km (0.109 R)
• M10: 7,764,728 km (0.059 R)
• M11: 9,212,536 km (0.052 R)
• M12: 9,910,859 km (0.092 R)
• M13: 10,426,822 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.9

Radius: 13.1

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.54 AU - 2.16 AU

Year: 1625 Days

Day: 11.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 45,927,098 km

• M1: 164,707 km (0.08 R)
• M2: 925,263 km (0.084 R)
• M3: 1,831,377 km (0.1 R)
• M4: 3,280,083 km (0.033 R)
• M5: 3,983,193 km (0.039 R)
• M6: 5,370,564 km (0.102 R)
• M7: 6,438,393 km (0.036 R)
• M8: 7,129,984 km (0.071 R)
• M9: 7,668,237 km (0.056 R)
• M10: 9,361,236 km (0.097 R)
• M11: 10,097,856 km (0.05 R)
• M12: 10,527,202 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 149

Radius: 11.1

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 3.69 AU - 4.61 AU

Year: 5459 Days

Day: 7.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 15.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 45,927,098 km

• M1: 203,902 km (0.067 R)
• M2: 557,701 km (0.093 R)
• M3: 1,178,682 km (0.058 R)
• M4: 1,668,465 km (0.067 R)
• M5: 2,359,607 km (0.091 R)
• M6: 3,181,648 km (0.062 R)
• M7: 3,585,861 km (0.085 R)
• M8: 3,945,494 km (0.092 R)
• M9: 5,363,532 km (0.107 R)
• M10: 6,095,814 km (0.05 R)
• M11: 6,836,323 km (0.109 R)
• M12: 7,728,376 km (0.12 R)
• M13: 8,562,683 km (0.099 R)
• M14: 9,706,957 km (0.111 R)
• M15: 10,147,373 km (0.117 R)
• M16: 11,187,378 km (0.048 R)
• M17: 12,254,609 km (0.111 R)
• M18: 12,682,608 km (0.109 R)
• M19: 13,523,648 km (0.12 R)
• M20: 14,686,322 km (0.111 R)
• M21: 17,156,632 km (0.067 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 939.5

Radius: 8.6

Gravity: 12.7 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 4.18 AU - 4.34 AU

Year: 5677 Days

Day: 10.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 45,927,098 km

• M1: 106,962 km (0.1 R)
• M2: 439,369 km (0.072 R)
• M3: 976,575 km (0.095 R)
• M4: 1,749,547 km (0.115 R)
• M5: 2,057,719 km (0.092 R)
• M6: 2,384,889 km (0.078 R)
• M7: 5,255,672 km (0.103 R)
• M8: 5,968,057 km (0.105 R)
• M9: 6,364,492 km (0.101 R)
• M10: 6,849,189 km (0.11 R)
• M11: 8,493,120 km (0.097 R)
• M12: 9,253,825 km (0.088 R)
• M13: 11,757,645 km (0.059 R)
• M14: 13,247,789 km (0.094 R)
• M15: 13,809,230 km (0.12 R)
• M16: 14,800,166 km (0.115 R)
• M17: 16,598,632 km (0.111 R)
• M18: 17,583,883 km (0.099 R)
• M19: 20,549,811 km (0.101 R)
• M20: 21,839,793 km (0.107 R)
• M21: 30,153,246 km (0.071 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 310.5

Radius: 6.1

Gravity: 8.34 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 7.75 AU - 7.75 AU

Year: 13931 Days

Day: 20 Hours

Environment

Temp: -219 °C

Axial Tilt: 177 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 45,927,098 km

• M1: 75,846 km (0.05 R)
• M2: 375,640 km (0.066 R)
• M3: 626,516 km (0.091 R)
• M4: 919,578 km (0.106 R)
• M5: 1,115,103 km (0.119 R)
• M6: 2,398,353 km (0.083 R)
• M7: 3,032,349 km (0.072 R)
• M8: 3,235,952 km (0.059 R)
• M9: 3,645,551 km (0.111 R)
• M10: 3,902,260 km (0.101 R)
• M11: 4,281,940 km (0.093 R)
• M12: 6,672,813 km (0.062 R)
• M13: 7,498,144 km (0.119 R)
• M14: 7,704,290 km (0.091 R)
• M15: 9,445,011 km (0.085 R)
• M16: 10,950,714 km (0.079 R)
• M17: 11,216,400 km (0.109 R)
• M18: 11,815,988 km (0.112 R)
• M19: 12,494,265 km (0.109 R)
• M20: 12,725,992 km (0.108 R)
• M21: 14,748,854 km (0.098 R)
• M22: 17,047,575 km (0.115 R)
• M23: 25,080,233 km (0.077 R)
• M24: 29,341,678 km (0.117 R)
• M25: 33,724,746 km (0.088 R)
• M26: 35,547,296 km (0.093 R)
• M27: 36,247,414 km (0.072 R)
• M28: 39,387,623 km (0.096 R)
• M29: 41,664,802 km (0.07 R)
• M30: 44,835,379 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: 398 - 18,908 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit