🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.64

Radius: 0.84

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.4 AU - 0.62 AU

Year: 130 Days

Day: 22.6 Hours

Environment

Temp: 209 °C

Axial Tilt: 12 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.05

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.62 AU - 2.1 AU

Year: 904 Days

Day: 17.7 Hours

Environment

Temp: -47 °C

Axial Tilt: 34.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.91

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 1.53 AU - 2.29 AU

Year: 941 Days

Day: 44.8 Hours

Environment

Temp: -45 °C

Axial Tilt: 14.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 85,401,713 km

• M1: 47,123 km (0.094 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.86

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 2.82 AU - 3.6 AU

Year: 2050 Days

Day: 29.5 Hours

Environment

Temp: -97 °C

Axial Tilt: 5.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.1

Radius: 1.35

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 2.61 AU - 4.09 AU

Year: 2186 Days

Day: 19.2 Hours

Environment

Temp: -112 °C

Axial Tilt: 18.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 6.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 955

Radius: 9.7

Gravity: 10.15 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 6.61 AU - 6.85 AU

Year: 6223 Days

Day: 6.4 Hours

Environment

Temp: -161 °C

Axial Tilt: 46.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 85,401,713 km

• M1: 123,119 km (0.043 R)
• M2: 558,000 km (0.116 R)
• M3: 903,721 km (0.107 R)
• M4: 1,313,769 km (0.08 R)
• M5: 1,906,026 km (0.069 R)
• M6: 2,289,595 km (0.118 R)
• M7: 2,610,932 km (0.105 R)
• M8: 3,171,325 km (0.054 R)
• M9: 3,883,411 km (0.114 R)
• M10: 5,072,565 km (0.05 R)
• M11: 5,560,254 km (0.068 R)
• M12: 6,012,488 km (0.101 R)
• M13: 7,176,060 km (0.096 R)
• M14: 11,155,513 km (0.095 R)
• M15: 14,403,433 km (0.101 R)
• M16: 16,734,018 km (0.098 R)
• M17: 17,746,646 km (0.101 R)
• M18: 21,890,357 km (0.052 R)
• M19: 22,369,370 km (0.067 R)
• M20: 23,265,760 km (0.092 R)
• M21: 29,057,890 km (0.096 R)
• M22: 30,420,129 km (0.085 R)
• M23: 38,915,044 km (0.09 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 409.8

Radius: 14.1

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 7.31 AU - 8.25 AU

Year: 7735 Days

Day: 14.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 85,401,713 km

• M1: 210,185 km (0.112 R)
• M2: 1,715,888 km (0.08 R)
• M3: 2,309,941 km (0.12 R)
• M4: 5,018,859 km (0.111 R)
• M5: 6,347,138 km (0.11 R)
• M6: 7,379,513 km (0.081 R)
• M7: 9,218,520 km (0.111 R)
• M8: 9,733,436 km (0.099 R)
• M9: 11,492,557 km (0.096 R)
• M10: 13,131,402 km (0.105 R)
• M11: 15,274,092 km (0.063 R)
• M12: 16,057,985 km (0.113 R)
• M13: 19,675,112 km (0.087 R)
• M14: 20,171,478 km (0.071 R)
• M15: 21,635,891 km (0.119 R)
• M16: 26,197,729 km (0.068 R)
• M17: 27,233,844 km (0.077 R)
• M18: 27,850,785 km (0.089 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 151.2

Radius: 8.5

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 9.39 AU - 9.83 AU

Year: 10619 Days

Day: 13.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 41.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 85,401,713 km

• M1: 107,561 km (0.037 R)
• M2: 400,174 km (0.058 R)
• M3: 786,735 km (0.101 R)
• M4: 1,286,691 km (0.096 R)
• M5: 1,780,514 km (0.069 R)
• M6: 2,072,230 km (0.076 R)
• M7: 4,655,187 km (0.087 R)
• M8: 6,371,074 km (0.096 R)
• M9: 7,094,529 km (0.105 R)
• M10: 7,726,431 km (0.079 R)
• M11: 8,433,430 km (0.03 R)
• M12: 9,428,555 km (0.111 R)
• M13: 11,555,538 km (0.084 R)
• M14: 12,280,938 km (0.114 R)
• M15: 13,662,923 km (0.059 R)
• M16: 14,639,947 km (0.102 R)
• M17: 15,662,747 km (0.099 R)
• M18: 19,283,166 km (0.096 R)
• M19: 20,581,077 km (0.085 R)
• M20: 21,073,553 km (0.047 R)
• M21: 22,598,254 km (0.042 R)
• M22: 23,047,198 km (0.085 R)
• M23: 23,808,501 km (0.07 R)
• M24: 26,938,238 km (0.116 R)
• M25: 28,732,216 km (0.028 R)

Planet 9 - Gas Giant

Semi-Major Axis: 10.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49

Radius: 8.6

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 9.57 AU - 11.67 AU

Year: 12336 Days

Day: 10 Hours

Environment

Temp: -173 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 85,401,713 km

• M1: 106,962 km (0.083 R)
• M2: 580,739 km (0.061 R)
• M3: 910,752 km (0.11 R)
• M4: 1,251,536 km (0.099 R)
• M5: 2,034,232 km (0.098 R)
• M6: 2,579,366 km (0.07 R)
• M7: 3,218,449 km (0.059 R)
• M8: 4,259,351 km (0.072 R)
• M9: 4,644,266 km (0.108 R)
• M10: 5,101,587 km (0.093 R)
• M11: 7,461,044 km (0.071 R)
• M12: 9,949,754 km (0.069 R)
• M13: 10,466,316 km (0.094 R)
• M14: 11,211,014 km (0.077 R)
• M15: 12,667,200 km (0.108 R)
• M16: 13,657,089 km (0.052 R)
• M17: 14,345,089 km (0.082 R)
• M18: 15,056,128 km (0.111 R)
• M19: 19,453,558 km (0.107 R)
• M20: 21,285,982 km (0.096 R)
• M21: 22,010,185 km (0.072 R)

Planet 10 - Ice Giant

Semi-Major Axis: 16.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 738.9

Radius: 4.5

Gravity: 36.49 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 14.64 AU - 17.44 AU

Year: 22898 Days

Day: 15.4 Hours

Environment

Temp: -181 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 85,401,713 km

• M1: 78,389 km (0.059 R)
• M2: 545,434 km (0.056 R)
• M3: 749,037 km (0.12 R)
• M4: 1,206,507 km (0.092 R)
• M5: 1,405,622 km (0.12 R)
• M6: 2,116,062 km (0.077 R)
• M7: 3,810,108 km (0.066 R)
• M8: 5,079,745 km (0.079 R)
• M9: 6,244,514 km (0.109 R)
• M10: 9,732,389 km (0.102 R)
• M11: 10,344,693 km (0.067 R)
• M12: 11,310,646 km (0.102 R)
• M13: 15,695,659 km (0.046 R)
• M14: 16,794,156 km (0.113 R)
• M15: 17,142,270 km (0.091 R)
• M16: 18,124,380 km (0.098 R)
• M17: 20,200,051 km (0.086 R)
• M18: 21,396,385 km (0.112 R)
• M19: 23,602,355 km (0.104 R)
• M20: 30,860,994 km (0.085 R)
• M21: 47,112,857 km (0.118 R)
• M22: 50,640,674 km (0.027 R)
• M23: 50,821,538 km (0.113 R)
• M24: 63,946,956 km (0.088 R)
• M25: 72,308,879 km (0.076 R)
• M26: 77,948,719 km (0.072 R)
• M27: 79,647,253 km (0.096 R)

Kuiper Belt

Range: 30.8 - 49.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 173 - 15,875 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit