🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.56 AU - 0.58 AU

Year: 282 Days

Day: 12.8 Hours

Environment

Temp: -115 °C

Axial Tilt: 80.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.16

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.53 AU - 0.73 AU

Year: 328 Days

Day: 13.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 29.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 10,295,528 km

• M1: 203,902 km (0.068 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.37

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.55 AU - 0.79 AU

Year: 360 Days

Day: 13.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 48 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407.3

Radius: 11.9

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.67 AU - 0.81 AU

Year: 418 Days

Day: 8.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 10,295,528 km

• M1: 148,102 km (0.069 R)
• M2: 576,550 km (0.094 R)
• M3: 1,000,810 km (0.12 R)
• M4: 1,693,149 km (0.087 R)
• M5: 2,180,239 km (0.114 R)
• M6: 2,656,858 km (0.049 R)
• M7: 3,057,032 km (0.087 R)
• M8: 3,906,898 km (0.111 R)
• M9: 4,283,436 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 596.5

Radius: 9.5

Gravity: 6.61 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.8 AU - 1.12 AU

Year: 617 Days

Day: 10.2 Hours

Environment

Temp: -166 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 10,295,528 km

• M1: 118,482 km (0.103 R)
• M2: 491,878 km (0.116 R)
• M3: 1,294,022 km (0.109 R)
• M4: 2,039,617 km (0.054 R)
• M5: 2,377,559 km (0.061 R)
• M6: 2,841,462 km (0.052 R)
• M7: 3,277,540 km (0.114 R)
• M8: 3,663,502 km (0.104 R)
• M9: 4,299,293 km (0.09 R)
• M10: 4,604,772 km (0.105 R)
• M11: 5,919,438 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 824.3

Radius: 12.5

Gravity: 5.28 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 1.08 AU - 1.36 AU

Year: 884 Days

Day: 8.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 10,295,528 km

• M1: 158,125 km (0.094 R)
• M2: 604,974 km (0.104 R)
• M3: 998,267 km (0.118 R)
• M4: 1,564,195 km (0.054 R)
• M5: 1,971,401 km (0.054 R)
• M6: 2,518,181 km (0.081 R)
• M7: 2,954,857 km (0.075 R)
• M8: 3,543,226 km (0.066 R)
• M9: 4,062,779 km (0.109 R)
• M10: 4,615,394 km (0.075 R)
• M11: 5,851,521 km (0.077 R)
• M12: 6,715,299 km (0.096 R)
• M13: 7,201,941 km (0.115 R)
• M14: 8,168,343 km (0.073 R)
• M15: 8,750,578 km (0.047 R)
• M16: 10,087,384 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 561.5

Radius: 10.6

Gravity: 5 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 1.49 AU - 2.23 AU

Year: 1664 Days

Day: 12 Hours

Environment

Temp: -178 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 10,295,528 km

• M1: 131,945 km (0.117 R)
• M2: 516,861 km (0.076 R)
• M3: 929,003 km (0.086 R)
• M4: 1,340,247 km (0.109 R)
• M5: 1,713,045 km (0.089 R)
• M6: 3,020,381 km (0.066 R)
• M7: 3,524,526 km (0.093 R)
• M8: 4,320,686 km (0.041 R)
• M9: 4,881,379 km (0.063 R)
• M10: 5,556,065 km (0.114 R)
• M11: 6,219,980 km (0.048 R)
• M12: 6,708,118 km (0.063 R)
• M13: 7,274,346 km (0.095 R)
• M14: 8,770,175 km (0.086 R)
• M15: 9,479,419 km (0.112 R)
• M16: 9,962,321 km (0.091 R)
• M17: 11,510,060 km (0.083 R)
• M18: 12,209,430 km (0.107 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 515.9

Radius: 10.8

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1.63 AU - 2.17 AU

Year: 1718 Days

Day: 6.4 Hours

Environment

Temp: -178 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 10,295,528 km

• M1: 134,339 km (0.076 R)
• M2: 547,379 km (0.086 R)
• M3: 938,128 km (0.112 R)
• M4: 1,358,349 km (0.1 R)
• M5: 2,282,415 km (0.082 R)
• M6: 3,163,097 km (0.099 R)
• M7: 5,052,668 km (0.116 R)
• M8: 5,410,955 km (0.049 R)
• M9: 6,991,756 km (0.117 R)
• M10: 8,830,463 km (0.112 R)
• M11: 9,572,768 km (0.081 R)
• M12: 10,189,560 km (0.088 R)
• M13: 12,463,747 km (0.099 R)
• M14: 13,003,197 km (0.063 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15

Radius: 13.6

Gravity: 0.08 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 4.03 AU - 5.41 AU

Year: 6727 Days

Day: 6.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 10,295,528 km

• M1: 192,383 km (0.106 R)
• M2: 629,807 km (0.112 R)
• M3: 1,528,292 km (0.119 R)
• M4: 3,067,205 km (0.057 R)
• M5: 4,738,363 km (0.079 R)
• M6: 5,218,871 km (0.073 R)
• M7: 6,022,212 km (0.12 R)
• M8: 6,454,101 km (0.088 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 422 - 16,564 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit