🌌 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: 1.57

Radius: 1.2

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.43 AU - 0.71 AU

Year: 278 Days

Day: 41.7 Hours

Environment

Temp: -118 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 242.3

Radius: 8.2

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.64 AU - 1.04 AU

Year: 497 Days

Day: 8.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 77,877,610 km

• M1: 102,325 km (0.102 R)
• M2: 504,893 km (0.083 R)
• M3: 1,055,413 km (0.071 R)
• M4: 2,108,133 km (0.119 R)
• M5: 3,114,179 km (0.094 R)
• M6: 3,478,749 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 410.9

Radius: 13

Gravity: 2.43 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.73 AU - 0.95 AU

Year: 497 Days

Day: 10 Hours

Environment

Temp: -156 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 77,877,610 km

• M1: 161,715 km (0.091 R)
• M2: 708,795 km (0.115 R)
• M3: 1,159,383 km (0.101 R)
• M4: 1,665,772 km (0.116 R)
• M5: 2,092,126 km (0.118 R)
• M6: 3,053,891 km (0.111 R)
• M7: 3,678,163 km (0.094 R)
• M8: 4,224,494 km (0.071 R)
• M9: 4,927,604 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 862.9

Radius: 8.3

Gravity: 12.53 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.82 AU - 1.34 AU

Year: 725 Days

Day: 11.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 77,877,610 km

• M1: 104,270 km (0.036 R)
• M2: 363,074 km (0.079 R)
• M3: 743,651 km (0.119 R)
• M4: 1,339,499 km (0.095 R)
• M5: 1,665,323 km (0.101 R)
• M6: 1,948,662 km (0.085 R)
• M7: 2,424,084 km (0.117 R)
• M8: 3,102,211 km (0.119 R)
• M9: 3,678,612 km (0.036 R)
• M10: 3,992,468 km (0.077 R)
• M11: 4,555,704 km (0.046 R)
• M12: 5,263,152 km (0.11 R)
• M13: 6,144,284 km (0.108 R)
• M14: 6,939,696 km (0.091 R)
• M15: 7,235,002 km (0.109 R)
• M16: 7,562,172 km (0.097 R)
• M17: 7,826,362 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 792.5

Radius: 10.1

Gravity: 7.77 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 3.54 AU - 5.14 AU

Year: 5838 Days

Day: 10.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 77,877,610 km

• M1: 150,346 km (0.028 R)
• M2: 546,182 km (0.102 R)
• M3: 1,199,476 km (0.088 R)
• M4: 1,666,071 km (0.061 R)
• M5: 2,350,332 km (0.111 R)
• M6: 2,701,887 km (0.087 R)
• M7: 3,534,549 km (0.105 R)
• M8: 4,529,674 km (0.043 R)
• M9: 6,309,141 km (0.099 R)
• M10: 7,652,679 km (0.05 R)
• M11: 8,432,084 km (0.108 R)
• M12: 10,286,200 km (0.108 R)
• M13: 12,293,504 km (0.079 R)
• M14: 13,306,880 km (0.065 R)
• M15: 17,590,615 km (0.095 R)
• M16: 19,084,799 km (0.112 R)
• M17: 20,368,947 km (0.085 R)
• M18: 29,307,719 km (0.104 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 119.3

Radius: 7.6

Gravity: 2.07 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 7.09 AU - 7.21 AU

Year: 12345 Days

Day: 18.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 77,877,610 km

• M1: 98,585 km (0.056 R)
• M2: 382,971 km (0.112 R)
• M3: 672,442 km (0.042 R)
• M4: 931,995 km (0.112 R)
• M5: 1,527,245 km (0.104 R)
• M6: 1,902,137 km (0.059 R)
• M7: 3,025,467 km (0.066 R)
• M8: 3,303,271 km (0.117 R)
• M9: 3,619,670 km (0.113 R)
• M10: 4,168,096 km (0.04 R)
• M11: 4,412,389 km (0.085 R)
• M12: 7,133,724 km (0.084 R)
• M13: 8,373,292 km (0.11 R)
• M14: 9,248,140 km (0.115 R)
• M15: 10,095,164 km (0.071 R)
• M16: 10,582,553 km (0.092 R)
• M17: 11,508,863 km (0.11 R)
• M18: 12,090,051 km (0.114 R)
• M19: 12,337,785 km (0.068 R)
• M20: 14,005,203 km (0.098 R)
• M21: 15,817,432 km (0.106 R)
• M22: 18,426,119 km (0.058 R)
• M23: 23,851,585 km (0.101 R)
• M24: 24,320,425 km (0.12 R)
• M25: 26,340,595 km (0.066 R)
• M26: 26,925,672 km (0.118 R)
• M27: 29,086,164 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 696.3

Radius: 6.2

Gravity: 18.11 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 9.56 AU - 10.52 AU

Year: 20541 Days

Day: 22.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 77,877,610 km

• M1: 84,224 km (0.044 R)
• M2: 553,961 km (0.106 R)
• M3: 757,264 km (0.102 R)
• M4: 1,591,572 km (0.051 R)
• M5: 1,954,945 km (0.05 R)
• M6: 2,372,473 km (0.038 R)
• M7: 3,001,980 km (0.078 R)
• M8: 3,355,929 km (0.072 R)
• M9: 3,587,357 km (0.065 R)
• M10: 3,798,440 km (0.088 R)
• M11: 4,763,495 km (0.105 R)
• M12: 5,056,408 km (0.08 R)
• M13: 6,049,439 km (0.109 R)
• M14: 7,950,080 km (0.057 R)
• M15: 10,276,476 km (0.111 R)
• M16: 11,659,808 km (0.109 R)
• M17: 12,057,588 km (0.079 R)
• M18: 16,798,195 km (0.04 R)
• M19: 18,440,331 km (0.048 R)
• M20: 19,716,700 km (0.114 R)
• M21: 20,186,587 km (0.051 R)
• M22: 21,246,488 km (0.072 R)
• M23: 21,740,311 km (0.099 R)
• M24: 22,956,691 km (0.078 R)
• M25: 24,756,503 km (0.118 R)
• M26: 25,193,329 km (0.052 R)
• M27: 26,421,078 km (0.06 R)
• M28: 26,877,202 km (0.041 R)
• M29: 29,725,247 km (0.074 R)
• M30: 33,427,195 km (0.09 R)
• M31: 35,873,121 km (0.118 R)
• M32: 38,581,590 km (0.109 R)
• M33: 47,018,162 km (0.051 R)
• M34: 51,840,749 km (0.095 R)
• M35: 55,666,864 km (0.063 R)
• M36: 57,744,180 km (0.04 R)
• M37: 65,733,604 km (0.104 R)
• M38: 67,415,233 km (0.081 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: 472 - 17,237 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit