🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 465.4

Radius: 13.9

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.57 AU - 0.69 AU

Year: 333 Days

Day: 11.7 Hours

Environment

Temp: -150 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 75,887,749 km

• M1: 172,935 km (0.075 R)
• M2: 608,115 km (0.048 R)
• M3: 1,078,451 km (0.049 R)
• M4: 1,673,402 km (0.115 R)
• M5: 2,177,846 km (0.08 R)
• M6: 2,649,079 km (0.061 R)
• M7: 3,088,897 km (0.057 R)
• M8: 3,790,361 km (0.066 R)
• M9: 4,253,367 km (0.094 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 80.3

Radius: 13.9

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.61 AU - 0.73 AU

Year: 366 Days

Day: 9.2 Hours

Environment

Temp: -166 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 75,887,749 km

• M1: 173,384 km (0.079 R)
• M2: 612,454 km (0.034 R)
• M3: 1,198,429 km (0.096 R)
• M4: 1,701,526 km (0.094 R)
• M5: 2,484,821 km (0.028 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 481

Radius: 12.3

Gravity: 3.18 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.63 AU - 0.71 AU

Year: 366 Days

Day: 6.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 43.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 75,887,749 km

• M1: 153,039 km (0.109 R)
• M2: 1,066,782 km (0.093 R)
• M3: 1,555,818 km (0.06 R)
• M4: 2,307,996 km (0.088 R)
• M5: 3,852,893 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 790

Radius: 14.1

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.84 AU - 1.06 AU

Year: 617 Days

Day: 13.9 Hours

Environment

Temp: -171 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 75,887,749 km

• M1: 175,478 km (0.074 R)
• M2: 820,395 km (0.111 R)
• M3: 1,267,393 km (0.1 R)
• M4: 1,768,247 km (0.109 R)
• M5: 2,274,037 km (0.066 R)
• M6: 2,923,142 km (0.072 R)
• M7: 3,585,562 km (0.086 R)
• M8: 4,033,009 km (0.036 R)
• M9: 4,629,007 km (0.107 R)
• M10: 5,371,760 km (0.109 R)
• M11: 6,511,397 km (0.062 R)
• M12: 7,247,568 km (0.044 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 275.3

Radius: 10.7

Gravity: 2.4 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.35 AU - 1.39 AU

Year: 1069 Days

Day: 13 Hours

Environment

Temp: -188 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 75,887,749 km

• M1: 133,142 km (0.079 R)
• M2: 526,734 km (0.034 R)
• M3: 972,835 km (0.084 R)
• M4: 1,312,871 km (0.08 R)
• M5: 1,851,124 km (0.119 R)
• M6: 4,928,502 km (0.088 R)
• M7: 6,234,940 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 437.6

Radius: 13.2

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 1.42 AU - 1.66 AU

Year: 1274 Days

Day: 10.8 Hours

Environment

Temp: -198 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 75,887,749 km

• M1: 164,109 km (0.103 R)
• M2: 594,053 km (0.104 R)
• M3: 1,016,966 km (0.108 R)
• M4: 1,435,092 km (0.037 R)
• M5: 2,010,296 km (0.066 R)
• M6: 2,557,824 km (0.041 R)
• M7: 3,163,097 km (0.12 R)
• M8: 3,693,721 km (0.084 R)
• M9: 4,453,529 km (0.094 R)
• M10: 5,066,281 km (0.111 R)
• M11: 6,963,781 km (0.097 R)
• M12: 7,418,558 km (0.108 R)
• M13: 8,124,960 km (0.093 R)
• M14: 8,575,548 km (0.117 R)
• M15: 9,555,863 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 51.2

Radius: 9.4

Gravity: 0.58 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 3.75 AU - 4.35 AU

Year: 5435 Days

Day: 14.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 75,887,749 km

• M1: 117,883 km (0.104 R)
• M2: 545,583 km (0.068 R)
• M3: 901,626 km (0.082 R)
• M4: 1,283,699 km (0.094 R)
• M5: 2,101,551 km (0.112 R)
• M6: 2,744,822 km (0.112 R)
• M7: 3,340,221 km (0.051 R)
• M8: 5,474,983 km (0.091 R)
• M9: 6,226,413 km (0.061 R)
• M10: 7,306,659 km (0.089 R)
• M11: 9,737,924 km (0.104 R)
• M12: 10,667,226 km (0.118 R)
• M13: 12,170,684 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 830.2

Radius: 6.8

Gravity: 17.95 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 7.21 AU - 10.85 AU

Year: 18095 Days

Day: 23.4 Hours

Environment

Temp: -240 °C

Axial Tilt: 113.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 75,887,749 km

• M1: 84,672 km (0.12 R)
• M2: 859,141 km (0.051 R)
• M3: 1,371,364 km (0.032 R)
• M4: 2,959,943 km (0.098 R)
• M5: 4,935,982 km (0.093 R)
• M6: 6,069,485 km (0.106 R)
• M7: 7,462,989 km (0.099 R)
• M8: 12,220,949 km (0.084 R)
• M9: 12,627,706 km (0.033 R)
• M10: 13,684,166 km (0.039 R)
• M11: 14,196,838 km (0.095 R)
• M12: 16,294,798 km (0.094 R)
• M13: 18,414,152 km (0.098 R)
• M14: 18,948,814 km (0.062 R)
• M15: 20,425,345 km (0.025 R)
• M16: 21,288,675 km (0.079 R)
• M17: 33,229,128 km (0.057 R)
• M18: 39,187,611 km (0.111 R)
• M19: 42,033,112 km (0.087 R)
• M20: 43,427,813 km (0.1 R)
• M21: 48,636,811 km (0.092 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: 294 - 19,477 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit