🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.96

Radius: 1.54

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.59 AU - 0.65 AU

Year: 320 Days

Day: 38.7 Hours

Environment

Temp: -128 °C

Axial Tilt: 36.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,401,295 km

• M1: 500,704 km (0.104 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.1

Radius: 11

Gravity: 3.16 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.74 AU - 1.04 AU

Year: 551 Days

Day: 7.5 Hours

Environment

Temp: -150 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,401,295 km

• M1: 136,882 km (0.103 R)
• M2: 658,530 km (0.05 R)
• M3: 1,247,197 km (0.057 R)
• M4: 1,717,832 km (0.041 R)
• M5: 2,073,875 km (0.116 R)
• M6: 2,451,460 km (0.099 R)
• M7: 2,844,005 km (0.09 R)
• M8: 3,313,144 km (0.085 R)
• M9: 4,635,739 km (0.082 R)
• M10: 5,069,423 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 634.8

Radius: 11

Gravity: 5.25 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.58 AU - 2.24 AU

Year: 1732 Days

Day: 5.5 Hours

Environment

Temp: -198 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 52,401,295 km

• M1: 136,882 km (0.119 R)
• M2: 639,680 km (0.103 R)
• M3: 1,194,689 km (0.102 R)
• M4: 1,620,444 km (0.06 R)
• M5: 2,414,061 km (0.112 R)
• M6: 3,212,315 km (0.106 R)
• M7: 3,631,189 km (0.098 R)
• M8: 5,027,536 km (0.098 R)
• M9: 5,823,995 km (0.11 R)
• M10: 6,935,507 km (0.053 R)
• M11: 7,281,527 km (0.049 R)
• M12: 8,844,825 km (0.044 R)
• M13: 9,509,488 km (0.097 R)
• M14: 10,412,760 km (0.075 R)
• M15: 11,010,254 km (0.046 R)
• M16: 12,389,546 km (0.109 R)
• M17: 13,303,290 km (0.1 R)
• M18: 14,261,165 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 960.3

Radius: 12.7

Gravity: 5.95 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.74 AU - 2.84 AU

Year: 2273 Days

Day: 5 Hours

Environment

Temp: -201 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 52,401,295 km

• M1: 157,975 km (0.045 R)
• M2: 570,267 km (0.087 R)
• M3: 1,037,461 km (0.108 R)
• M4: 1,494,483 km (0.084 R)
• M5: 1,940,434 km (0.067 R)
• M6: 2,772,198 km (0.066 R)
• M7: 3,210,670 km (0.106 R)
• M8: 4,046,024 km (0.097 R)
• M9: 4,702,160 km (0.113 R)
• M10: 5,330,471 km (0.095 R)
• M11: 5,987,954 km (0.104 R)
• M12: 6,899,603 km (0.118 R)
• M13: 7,495,901 km (0.056 R)
• M14: 8,963,904 km (0.078 R)
• M15: 10,044,001 km (0.045 R)
• M16: 12,899,824 km (0.102 R)
• M17: 13,347,870 km (0.086 R)
• M18: 18,816,570 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 644.3

Radius: 8.6

Gravity: 8.71 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 2.37 AU - 2.53 AU

Year: 2516 Days

Day: 5.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 52,401,295 km

• M1: 107,262 km (0.101 R)
• M2: 401,221 km (0.1 R)
• M3: 911,649 km (0.078 R)
• M4: 1,545,496 km (0.073 R)
• M5: 1,836,763 km (0.098 R)
• M6: 2,461,035 km (0.098 R)
• M7: 2,893,073 km (0.077 R)
• M8: 3,374,928 km (0.068 R)
• M9: 4,166,749 km (0.085 R)
• M10: 6,739,085 km (0.085 R)
• M11: 8,020,540 km (0.104 R)
• M12: 8,503,592 km (0.109 R)
• M13: 10,594,072 km (0.052 R)
• M14: 12,487,981 km (0.047 R)
• M15: 13,093,254 km (0.049 R)
• M16: 13,763,303 km (0.119 R)
• M17: 14,456,091 km (0.057 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 797.2

Radius: 13.6

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 4.99 AU - 5.27 AU

Year: 7622 Days

Day: 9.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 52,401,295 km

• M1: 169,943 km (0.114 R)
• M2: 719,865 km (0.06 R)
• M3: 1,688,661 km (0.104 R)
• M4: 2,468,365 km (0.111 R)
• M5: 3,523,927 km (0.081 R)
• M6: 4,382,170 km (0.086 R)
• M7: 5,189,999 km (0.113 R)
• M8: 6,478,186 km (0.076 R)
• M9: 9,174,688 km (0.039 R)
• M10: 9,915,796 km (0.05 R)
• M11: 10,898,055 km (0.092 R)
• M12: 11,944,044 km (0.112 R)
• M13: 12,659,121 km (0.115 R)
• M14: 13,113,301 km (0.051 R)
• M15: 16,604,017 km (0.081 R)
• M16: 17,635,195 km (0.056 R)
• M17: 18,059,455 km (0.111 R)
• M18: 19,673,766 km (0.107 R)
• M19: 21,223,151 km (0.111 R)
• M20: 23,019,821 km (0.093 R)
• M21: 23,612,229 km (0.116 R)
• M22: 27,007,502 km (0.096 R)
• M23: 30,715,584 km (0.06 R)
• M24: 31,849,387 km (0.067 R)
• M25: 32,373,877 km (0.08 R)
• M26: 33,117,827 km (0.07 R)
• M27: 36,208,369 km (0.116 R)
• M28: 36,664,942 km (0.074 R)
• M29: 37,125,404 km (0.072 R)
• M30: 39,006,298 km (0.102 R)
• M31: 40,213,553 km (0.107 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 361.1

Radius: 6.7

Gravity: 8.04 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 6.35 AU - 10.29 AU

Year: 15743 Days

Day: 21.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 52,401,295 km

• M1: 158,873 km (0.081 R)
• M2: 663,467 km (0.09 R)
• M3: 1,136,196 km (0.092 R)
• M4: 1,611,917 km (0.093 R)
• M5: 1,846,337 km (0.078 R)
• M6: 2,483,773 km (0.087 R)
• M7: 3,987,232 km (0.041 R)
• M8: 4,631,700 km (0.075 R)
• M9: 7,439,652 km (0.106 R)
• M10: 9,124,273 km (0.107 R)
• M11: 10,719,435 km (0.114 R)
• M12: 12,431,882 km (0.049 R)
• M13: 16,679,415 km (0.115 R)
• M14: 18,028,339 km (0.116 R)
• M15: 20,941,907 km (0.112 R)
• M16: 25,488,336 km (0.048 R)
• M17: 29,890,103 km (0.098 R)
• M18: 31,537,475 km (0.116 R)
• M19: 40,162,092 km (0.107 R)
• M20: 46,082,278 km (0.074 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 356 - 19,959 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit