🌌 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: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.12

Radius: 1.05

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.51 AU - 0.71 AU

Year: 313 Days

Day: 18.7 Hours

Environment

Temp: -129 °C

Axial Tilt: 49.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 42

Radius: 10.2

Gravity: 0.4 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.9 AU - 0.9 AU

Year: 560 Days

Day: 9.3 Hours

Environment

Temp: -156 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 42,974,072 km

• M1: 126,859 km (0.054 R)
• M2: 593,006 km (0.111 R)
• M3: 997,967 km (0.104 R)
• M4: 1,403,976 km (0.102 R)
• M5: 2,492,001 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 298.1

Radius: 8.4

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 1 AU - 1.16 AU

Year: 736 Days

Day: 10.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 42,974,072 km

• M1: 104,419 km (0.085 R)
• M2: 488,287 km (0.113 R)
• M3: 942,018 km (0.113 R)
• M4: 1,310,178 km (0.12 R)
• M5: 1,659,040 km (0.058 R)
• M6: 2,193,404 km (0.027 R)
• M7: 3,539,934 km (0.06 R)
• M8: 3,824,619 km (0.038 R)
• M9: 4,367,211 km (0.114 R)
• M10: 5,153,048 km (0.077 R)
• M11: 5,451,945 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138.5

Radius: 13.7

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 3.07 AU - 3.73 AU

Year: 4113 Days

Day: 5.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 42,974,072 km

• M1: 170,392 km (0.105 R)
• M2: 619,934 km (0.056 R)
• M3: 1,678,039 km (0.113 R)
• M4: 2,579,965 km (0.046 R)
• M5: 3,714,964 km (0.095 R)
• M6: 4,204,299 km (0.072 R)
• M7: 4,881,977 km (0.097 R)
• M8: 6,431,362 km (0.067 R)
• M9: 8,318,090 km (0.095 R)
• M10: 8,748,483 km (0.051 R)
• M11: 11,165,536 km (0.051 R)
• M12: 12,508,177 km (0.101 R)
• M13: 14,128,173 km (0.117 R)
• M14: 14,565,148 km (0.098 R)
• M15: 15,283,367 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.2

Radius: 8.8

Gravity: 3.57 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 3.63 AU - 4.33 AU

Year: 5209 Days

Day: 13.8 Hours

Environment

Temp: -209 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 42,974,072 km

• M1: 109,506 km (0.039 R)
• M2: 449,093 km (0.104 R)
• M3: 763,099 km (0.117 R)
• M4: 1,054,515 km (0.045 R)
• M5: 1,948,811 km (0.091 R)
• M6: 2,344,647 km (0.107 R)
• M7: 2,760,829 km (0.098 R)
• M8: 3,802,778 km (0.096 R)
• M9: 4,180,812 km (0.096 R)
• M10: 5,211,990 km (0.101 R)
• M11: 5,679,483 km (0.068 R)
• M12: 6,231,499 km (0.104 R)
• M13: 6,609,234 km (0.115 R)
• M14: 8,696,274 km (0.09 R)
• M15: 9,773,079 km (0.097 R)
• M16: 10,565,948 km (0.094 R)
• M17: 10,853,326 km (0.115 R)
• M18: 12,055,644 km (0.058 R)
• M19: 14,773,538 km (0.111 R)
• M20: 15,289,202 km (0.079 R)
• M21: 15,604,404 km (0.079 R)
• M22: 17,472,882 km (0.104 R)
• M23: 19,981,040 km (0.115 R)
• M24: 20,803,678 km (0.114 R)
• M25: 22,112,959 km (0.069 R)

Asteroid Belt

Center: 5.02 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Ice Giant

Semi-Major Axis: 6.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 75.3

Radius: 4.5

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 5.44 AU - 6.68 AU

Year: 9786 Days

Day: 22 Hours

Environment

Temp: -213 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,974,072 km

• M1: 81,381 km (0.097 R)
• M2: 345,272 km (0.105 R)
• M3: 1,555,818 km (0.111 R)
• M4: 2,253,542 km (0.096 R)
• M5: 2,695,903 km (0.101 R)
• M6: 3,033,246 km (0.097 R)
• M7: 4,063,527 km (0.099 R)
• M8: 4,393,091 km (0.077 R)
• M9: 5,594,512 km (0.112 R)
• M10: 11,658,910 km (0.117 R)
• M11: 16,735,215 km (0.109 R)
• M12: 17,069,566 km (0.07 R)
• M13: 18,629,273 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 481.3

Radius: 7

Gravity: 9.82 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 5.83 AU - 6.57 AU

Year: 10127 Days

Day: 18 Hours

Environment

Temp: -226 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 42,974,072 km

• M1: 87,365 km (0.101 R)
• M2: 733,329 km (0.075 R)
• M3: 1,048,831 km (0.096 R)
• M4: 3,425,941 km (0.1 R)
• M5: 5,480,219 km (0.079 R)
• M6: 6,728,314 km (0.106 R)
• M7: 8,197,814 km (0.058 R)
• M8: 9,075,504 km (0.117 R)
• M9: 9,396,990 km (0.052 R)
• M10: 10,209,606 km (0.109 R)
• M11: 11,224,627 km (0.114 R)
• M12: 12,138,820 km (0.07 R)
• M13: 12,985,843 km (0.104 R)
• M14: 13,992,786 km (0.084 R)
• M15: 16,908,299 km (0.116 R)
• M16: 19,062,509 km (0.059 R)
• M17: 19,590,140 km (0.101 R)
• M18: 19,973,111 km (0.034 R)
• M19: 31,875,716 km (0.066 R)
• M20: 32,405,442 km (0.061 R)
• M21: 35,936,251 km (0.103 R)
• M22: 37,912,289 km (0.026 R)
• M23: 41,448,633 km (0.093 R)
• M24: 41,700,257 km (0.098 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 325 - 13,183 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit