🌌 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: 2.97

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.48 AU - 0.56 AU

Year: 246 Days

Day: 12.5 Hours

Environment

Temp: -108 °C

Axial Tilt: 15.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 901.8

Radius: 12.5

Gravity: 5.77 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.65 AU - 0.89 AU

Year: 443 Days

Day: 5.2 Hours

Environment

Temp: -149 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 40,757,795 km

• M1: 155,731 km (0.111 R)
• M2: 560,394 km (0.05 R)
• M3: 1,027,887 km (0.034 R)
• M4: 1,887,327 km (0.104 R)
• M5: 2,312,035 km (0.099 R)
• M6: 2,737,641 km (0.061 R)
• M7: 3,169,081 km (0.063 R)
• M8: 4,003,987 km (0.082 R)
• M9: 5,256,420 km (0.092 R)
• M10: 6,146,528 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 754.6

Radius: 10.1

Gravity: 7.4 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.85 AU - 1.05 AU

Year: 607 Days

Day: 7.9 Hours

Environment

Temp: -165 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 40,757,795 km

• M1: 125,662 km (0.117 R)
• M2: 453,730 km (0.09 R)
• M3: 901,776 km (0.086 R)
• M4: 1,519,017 km (0.092 R)
• M5: 1,962,574 km (0.105 R)
• M6: 2,368,284 km (0.096 R)
• M7: 2,728,516 km (0.104 R)
• M8: 3,174,467 km (0.059 R)
• M9: 4,490,180 km (0.112 R)
• M10: 4,995,223 km (0.076 R)
• M11: 6,177,644 km (0.106 R)
• M12: 6,495,390 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 791.2

Radius: 9.7

Gravity: 8.41 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.59 AU - 2.07 AU

Year: 1624 Days

Day: 9.8 Hours

Environment

Temp: -187 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 40,757,795 km

• M1: 120,576 km (0.032 R)
• M2: 486,492 km (0.043 R)
• M3: 1,042,697 km (0.068 R)
• M4: 1,351,318 km (0.061 R)
• M5: 1,742,366 km (0.078 R)
• M6: 2,090,481 km (0.076 R)
• M7: 2,673,015 km (0.109 R)
• M8: 4,789,825 km (0.089 R)
• M9: 5,148,710 km (0.041 R)
• M10: 6,113,616 km (0.048 R)
• M11: 7,032,745 km (0.119 R)
• M12: 7,553,795 km (0.104 R)
• M13: 8,921,867 km (0.095 R)
• M14: 9,272,226 km (0.059 R)
• M15: 9,698,131 km (0.103 R)
• M16: 12,103,365 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 783.4

Radius: 9.2

Gravity: 9.26 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.61 AU - 3.77 AU

Year: 4650 Days

Day: 5.1 Hours

Environment

Temp: -211 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 40,757,795 km

• M1: 114,442 km (0.101 R)
• M2: 437,873 km (0.092 R)
• M3: 1,033,422 km (0.088 R)
• M4: 1,865,037 km (0.109 R)
• M5: 2,210,458 km (0.112 R)
• M6: 2,720,138 km (0.069 R)
• M7: 3,618,922 km (0.119 R)
• M8: 3,997,405 km (0.068 R)
• M9: 4,860,136 km (0.093 R)
• M10: 5,577,757 km (0.09 R)
• M11: 6,784,413 km (0.113 R)
• M12: 7,154,219 km (0.061 R)
• M13: 7,824,866 km (0.095 R)
• M14: 8,536,802 km (0.118 R)
• M15: 10,706,121 km (0.096 R)
• M16: 12,708,190 km (0.103 R)
• M17: 16,882,718 km (0.083 R)
• M18: 18,781,713 km (0.097 R)
• M19: 20,678,764 km (0.117 R)
• M20: 21,457,870 km (0.101 R)
• M21: 22,700,130 km (0.095 R)
• M22: 24,378,170 km (0.072 R)
• M23: 27,299,816 km (0.103 R)
• M24: 28,757,348 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 264.3

Radius: 8.9

Gravity: 3.34 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 3.62 AU - 5.84 AU

Year: 6748 Days

Day: 9.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 40,757,795 km

• M1: 110,702 km (0.097 R)
• M2: 453,282 km (0.105 R)
• M3: 938,427 km (0.098 R)
• M4: 1,317,060 km (0.1 R)
• M5: 2,105,740 km (0.084 R)
• M6: 3,198,851 km (0.113 R)
• M7: 4,706,199 km (0.069 R)
• M8: 5,914,801 km (0.103 R)
• M9: 6,360,303 km (0.104 R)
• M10: 6,796,082 km (0.108 R)
• M11: 8,932,190 km (0.062 R)
• M12: 12,412,285 km (0.078 R)
• M13: 13,646,467 km (0.056 R)
• M14: 15,069,293 km (0.084 R)
• M15: 19,666,884 km (0.057 R)
• M16: 21,202,955 km (0.088 R)
• M17: 21,755,570 km (0.089 R)
• M18: 23,471,158 km (0.114 R)
• M19: 24,968,184 km (0.079 R)
• M20: 25,662,318 km (0.047 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.5

Radius: 12.5

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 4.29 AU - 5.71 AU

Year: 7334 Days

Day: 14.3 Hours

Environment

Temp: -215 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 40,757,795 km

• M1: 155,582 km (0.112 R)
• M2: 1,237,623 km (0.082 R)
• M3: 2,710,265 km (0.091 R)
• M4: 3,118,218 km (0.108 R)
• M5: 4,142,515 km (0.04 R)
• M6: 4,642,172 km (0.095 R)
• M7: 6,002,465 km (0.082 R)
• M8: 7,518,490 km (0.107 R)
• M9: 10,020,365 km (0.115 R)
• M10: 10,644,038 km (0.07 R)
• M11: 16,604,316 km (0.09 R)
• M12: 19,677,655 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 441

Radius: 4.1

Gravity: 26.23 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 7.69 AU - 8.85 AU

Year: 15602 Days

Day: 16.5 Hours

Environment

Temp: -233 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,757,795 km

• M1: 51,013 km (0.105 R)
• M2: 258,056 km (0.077 R)
• M3: 588,518 km (0.091 R)
• M4: 1,908,121 km (0.096 R)
• M5: 4,231,226 km (0.095 R)
• M6: 5,359,942 km (0.08 R)
• M7: 6,756,737 km (0.112 R)
• M8: 7,004,023 km (0.104 R)
• M9: 11,417,010 km (0.069 R)
• M10: 12,125,955 km (0.104 R)
• M11: 15,326,751 km (0.059 R)
• M12: 17,310,568 km (0.085 R)
• M13: 24,180,701 km (0.1 R)
• M14: 25,346,367 km (0.12 R)
• M15: 33,492,869 km (0.095 R)
• M16: 35,802,660 km (0.099 R)
• M17: 50,348,061 km (0.055 R)
• M18: 54,350,851 km (0.089 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 94.7

Radius: 5.5

Gravity: 3.13 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 9.22 AU - 11 AU

Year: 21088 Days

Day: 18.2 Hours

Environment

Temp: -233 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 40,757,795 km

• M1: 68,366 km (0.113 R)
• M2: 379,530 km (0.097 R)
• M3: 1,145,172 km (0.101 R)
• M4: 1,966,763 km (0.096 R)
• M5: 2,196,994 km (0.089 R)
• M6: 4,003,239 km (0.081 R)
• M7: 5,215,879 km (0.114 R)
• M8: 6,838,119 km (0.078 R)
• M9: 8,214,419 km (0.051 R)
• M10: 9,441,122 km (0.12 R)
• M11: 11,713,364 km (0.093 R)
• M12: 15,897,317 km (0.114 R)
• M13: 16,158,964 km (0.119 R)
• M14: 17,579,844 km (0.045 R)
• M15: 19,008,653 km (0.05 R)
• M16: 20,590,501 km (0.111 R)
• M17: 23,166,277 km (0.112 R)
• M18: 30,629,715 km (0.114 R)
• M19: 31,443,827 km (0.071 R)
• M20: 36,293,191 km (0.095 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 310 - 16,059 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit