🌌 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: 3.79

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.52 AU - 0.66 AU

Year: 297 Days

Day: 33.1 Hours

Environment

Temp: -133 °C

Axial Tilt: 44.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,482,051 km

• M1: 306,227 km (0.077 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 513.9

Radius: 13.7

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.93 AU - 1.07 AU

Year: 656 Days

Day: 10.6 Hours

Environment

Temp: -162 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 51,482,051 km

• M1: 172,337 km (0.088 R)
• M2: 727,794 km (0.07 R)
• M3: 1,371,663 km (0.09 R)
• M4: 1,907,522 km (0.066 R)
• M5: 2,511,449 km (0.04 R)
• M6: 3,193,466 km (0.106 R)
• M7: 4,038,544 km (0.102 R)
• M8: 4,629,755 km (0.04 R)
• M9: 5,061,046 km (0.119 R)
• M10: 5,519,264 km (0.112 R)
• M11: 6,060,958 km (0.111 R)
• M12: 6,919,799 km (0.035 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 845.9

Radius: 12.4

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.8 AU - 1.3 AU

Year: 706 Days

Day: 9.3 Hours

Environment

Temp: -171 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 51,482,051 km

• M1: 154,235 km (0.066 R)
• M2: 612,902 km (0.113 R)
• M3: 1,132,456 km (0.105 R)
• M4: 1,574,218 km (0.059 R)
• M5: 2,084,048 km (0.113 R)
• M6: 2,567,847 km (0.036 R)
• M7: 3,295,043 km (0.098 R)
• M8: 4,638,731 km (0.116 R)
• M9: 5,087,973 km (0.045 R)
• M10: 5,509,690 km (0.051 R)
• M11: 6,656,507 km (0.075 R)
• M12: 7,050,099 km (0.083 R)
• M13: 8,176,421 km (0.057 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 216.2

Radius: 11.7

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.94 AU - 1.34 AU

Year: 798 Days

Day: 9.1 Hours

Environment

Temp: -171 °C

Axial Tilt: 43.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 51,482,051 km

• M1: 145,559 km (0.099 R)
• M2: 529,128 km (0.086 R)
• M3: 897,138 km (0.079 R)
• M4: 1,389,615 km (0.12 R)
• M5: 1,953,898 km (0.089 R)
• M6: 2,577,721 km (0.055 R)
• M7: 4,465,347 km (0.117 R)
• M8: 4,835,003 km (0.12 R)
• M9: 5,241,311 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 881.1

Radius: 9.1

Gravity: 10.64 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 1.28 AU - 1.62 AU

Year: 1145 Days

Day: 11.4 Hours

Environment

Temp: -180 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 51,482,051 km

• M1: 113,246 km (0.088 R)
• M2: 432,338 km (0.084 R)
• M3: 813,812 km (0.116 R)
• M4: 1,377,946 km (0.114 R)
• M5: 1,682,078 km (0.115 R)
• M6: 2,042,011 km (0.094 R)
• M7: 2,589,689 km (0.111 R)
• M8: 2,878,113 km (0.087 R)
• M9: 3,443,145 km (0.049 R)
• M10: 3,793,353 km (0.109 R)
• M11: 4,678,823 km (0.044 R)
• M12: 5,029,480 km (0.053 R)
• M13: 5,894,007 km (0.112 R)
• M14: 6,326,793 km (0.082 R)
• M15: 6,903,643 km (0.068 R)
• M16: 8,875,642 km (0.066 R)
• M17: 9,353,457 km (0.077 R)
• M18: 10,823,406 km (0.108 R)
• M19: 11,403,696 km (0.08 R)
• M20: 11,754,802 km (0.094 R)
• M21: 12,112,940 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.1

Radius: 11.9

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 3.67 AU - 4.59 AU

Year: 5506 Days

Day: 9.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 51,482,051 km

• M1: 151,243 km (0.109 R)
• M2: 1,361,041 km (0.066 R)
• M3: 2,134,163 km (0.113 R)
• M4: 3,645,401 km (0.04 R)
• M5: 4,378,580 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 20.1

Radius: 13.6

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 4.28 AU - 6.26 AU

Year: 7936 Days

Day: 5.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 51,482,051 km

• M1: 169,195 km (0.106 R)
• M2: 630,854 km (0.111 R)
• M3: 1,301,053 km (0.09 R)
• M4: 3,035,341 km (0.102 R)
• M5: 4,066,220 km (0.079 R)
• M6: 4,855,648 km (0.115 R)
• M7: 7,740,343 km (0.056 R)
• M8: 9,468,049 km (0.073 R)
• M9: 12,301,732 km (0.074 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 412.4

Radius: 4.3

Gravity: 22.3 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 7.41 AU - 8.23 AU

Year: 14346 Days

Day: 20.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 51,482,051 km

• M1: 53,556 km (0.106 R)
• M2: 268,079 km (0.091 R)
• M3: 1,010,534 km (0.068 R)
• M4: 2,296,477 km (0.085 R)
• M5: 2,473,002 km (0.111 R)
• M6: 4,464,300 km (0.105 R)
• M7: 4,834,255 km (0.039 R)
• M8: 4,994,325 km (0.089 R)
• M9: 5,325,086 km (0.07 R)
• M10: 6,482,076 km (0.039 R)
• M11: 7,495,302 km (0.058 R)
• M12: 9,728,798 km (0.07 R)
• M13: 12,730,180 km (0.062 R)
• M14: 13,853,660 km (0.116 R)
• M15: 15,452,114 km (0.086 R)
• M16: 17,169,497 km (0.027 R)
• M17: 17,392,847 km (0.054 R)
• M18: 19,570,842 km (0.097 R)
• M19: 23,623,897 km (0.102 R)
• M20: 24,741,693 km (0.025 R)
• M21: 26,187,855 km (0.045 R)
• M22: 37,795,453 km (0.053 R)
• M23: 40,624,947 km (0.053 R)
• M24: 41,154,075 km (0.081 R)
• M25: 42,361,479 km (0.116 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 267 - 15,618 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit