🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.07

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.53 AU - 0.73 AU

Year: 328 Days

Day: 29.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 4.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.4

Radius: 14.4

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.71 AU - 0.85 AU

Year: 452 Days

Day: 7.8 Hours

Environment

Temp: -149 °C

Axial Tilt: 41.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 81,910,057 km

• M1: 179,218 km (0.068 R)
• M2: 640,578 km (0.05 R)
• M3: 1,140,085 km (0.086 R)
• M4: 1,743,563 km (0.104 R)
• M5: 2,238,583 km (0.113 R)
• M6: 2,868,390 km (0.115 R)
• M7: 3,591,396 km (0.062 R)
• M8: 4,257,855 km (0.051 R)
• M9: 4,728,041 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 34.1

Radius: 12.7

Gravity: 0.21 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.92 AU - 1.08 AU

Year: 656 Days

Day: 10.7 Hours

Environment

Temp: -162 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 81,910,057 km

• M1: 157,975 km (0.104 R)
• M2: 561,441 km (0.104 R)
• M3: 1,044,343 km (0.078 R)
• M4: 1,747,154 km (0.108 R)
• M5: 2,496,340 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 886.2

Radius: 8.7

Gravity: 11.71 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.03 AU - 1.45 AU

Year: 906 Days

Day: 6.9 Hours

Environment

Temp: -165 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 81,910,057 km

• M1: 108,159 km (0.092 R)
• M2: 424,858 km (0.062 R)
• M3: 745,895 km (0.077 R)
• M4: 1,334,862 km (0.072 R)
• M5: 2,018,823 km (0.072 R)
• M6: 2,293,335 km (0.091 R)
• M7: 2,690,518 km (0.066 R)
• M8: 3,078,575 km (0.096 R)
• M9: 3,715,114 km (0.108 R)
• M10: 4,214,322 km (0.111 R)
• M11: 7,335,083 km (0.087 R)
• M12: 7,607,949 km (0.117 R)
• M13: 8,253,464 km (0.11 R)
• M14: 8,823,432 km (0.056 R)
• M15: 9,332,663 km (0.083 R)
• M16: 9,981,469 km (0.048 R)
• M17: 10,440,884 km (0.047 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.3

Radius: 13.1

Gravity: 1.61 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.26 AU - 1.72 AU

Year: 1193 Days

Day: 11.6 Hours

Environment

Temp: -176 °C

Axial Tilt: 56.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 81,910,057 km

• M1: 163,062 km (0.103 R)
• M2: 689,796 km (0.074 R)
• M3: 1,367,474 km (0.093 R)
• M4: 1,848,730 km (0.114 R)
• M5: 2,627,986 km (0.036 R)
• M6: 3,438,657 km (0.088 R)
• M7: 3,917,968 km (0.079 R)
• M8: 4,637,833 km (0.112 R)
• M9: 5,999,623 km (0.102 R)
• M10: 6,508,255 km (0.119 R)
• M11: 7,001,629 km (0.081 R)
• M12: 7,991,518 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 886.7

Radius: 14.6

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 1.74 AU - 2.48 AU

Year: 2011 Days

Day: 8.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 81,910,057 km

• M1: 200,910 km (0.026 R)
• M2: 660,774 km (0.096 R)
• M3: 1,283,699 km (0.107 R)
• M4: 1,886,579 km (0.053 R)
• M5: 2,549,597 km (0.091 R)
• M6: 3,808,014 km (0.11 R)
• M7: 5,260,609 km (0.092 R)
• M8: 6,587,393 km (0.032 R)
• M9: 8,158,170 km (0.12 R)
• M10: 9,508,740 km (0.043 R)
• M11: 10,889,379 km (0.074 R)
• M12: 12,152,583 km (0.086 R)
• M13: 13,467,399 km (0.078 R)
• M14: 15,301,618 km (0.115 R)
• M15: 15,785,268 km (0.091 R)
• M16: 16,630,795 km (0.068 R)
• M17: 17,090,510 km (0.106 R)
• M18: 17,663,918 km (0.072 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 58.9

Radius: 13.4

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 2.24 AU - 2.32 AU

Year: 2258 Days

Day: 13.3 Hours

Environment

Temp: -192 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 81,910,057 km

• M1: 166,951 km (0.083 R)
• M2: 825,331 km (0.086 R)
• M3: 1,336,059 km (0.059 R)
• M4: 1,850,376 km (0.066 R)
• M5: 2,364,394 km (0.037 R)
• M6: 3,253,305 km (0.104 R)
• M7: 4,354,495 km (0.102 R)
• M8: 5,635,352 km (0.114 R)
• M9: 6,205,170 km (0.071 R)
• M10: 6,647,381 km (0.089 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 319.6

Radius: 11.5

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 3.37 AU - 4.77 AU

Year: 5386 Days

Day: 6.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 81,910,057 km

• M1: 250,876 km (0.076 R)
• M2: 777,610 km (0.039 R)
• M3: 1,183,170 km (0.036 R)
• M4: 1,995,037 km (0.042 R)
• M5: 2,635,017 km (0.111 R)
• M6: 5,615,306 km (0.032 R)
• M7: 6,116,758 km (0.067 R)
• M8: 7,973,267 km (0.104 R)
• M9: 12,859,732 km (0.104 R)
• M10: 15,598,121 km (0.072 R)
• M11: 19,634,571 km (0.118 R)
• M12: 20,079,475 km (0.113 R)
• M13: 23,102,250 km (0.115 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 759.6

Radius: 6.2

Gravity: 19.76 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 8.98 AU - 11.32 AU

Year: 21213 Days

Day: 22.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 81,910,057 km

• M1: 78,389 km (0.091 R)
• M2: 586,872 km (0.089 R)
• M3: 834,906 km (0.118 R)
• M4: 1,295,368 km (0.026 R)
• M5: 1,723,816 km (0.038 R)
• M6: 1,971,401 km (0.111 R)
• M7: 2,308,744 km (0.07 R)
• M8: 2,733,602 km (0.055 R)
• M9: 4,461,906 km (0.117 R)
• M10: 5,006,442 km (0.101 R)
• M11: 5,553,671 km (0.081 R)
• M12: 6,227,011 km (0.106 R)
• M13: 8,519,150 km (0.099 R)
• M14: 11,060,519 km (0.109 R)
• M15: 12,122,813 km (0.113 R)
• M16: 13,251,379 km (0.107 R)
• M17: 15,073,033 km (0.085 R)
• M18: 19,205,075 km (0.103 R)
• M19: 19,486,020 km (0.038 R)
• M20: 24,034,095 km (0.086 R)
• M21: 27,312,083 km (0.114 R)
• M22: 29,489,929 km (0.083 R)
• M23: 32,570,149 km (0.107 R)
• M24: 36,141,798 km (0.117 R)
• M25: 37,582,276 km (0.12 R)
• M26: 42,448,695 km (0.093 R)
• M27: 43,085,084 km (0.047 R)
• M28: 43,405,673 km (0.077 R)
• M29: 50,155,529 km (0.117 R)
• M30: 50,510,375 km (0.067 R)
• M31: 51,946,065 km (0.085 R)
• M32: 55,653,998 km (0.115 R)
• M33: 60,733,145 km (0.118 R)
• M34: 65,899,956 km (0.07 R)
• M35: 75,924,809 km (0.114 R)
• M36: 78,282,471 km (0.12 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 181 - 16,743 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit