🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.51 AU - 0.65 AU

Year: 290 Days

Day: 18.2 Hours

Environment

Temp: -134 °C

Axial Tilt: 36.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 43.4

Radius: 11.5

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.8 AU - 0.9 AU

Year: 514 Days

Day: 8.7 Hours

Environment

Temp: -147 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 32,331,496 km

• M1: 143,016 km (0.087 R)
• M2: 519,254 km (0.11 R)
• M3: 996,471 km (0.1 R)
• M4: 1,683,126 km (0.065 R)
• M5: 2,278,824 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 966.3

Radius: 13

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 1.75 AU - 2.29 AU

Year: 1883 Days

Day: 12.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 32,331,496 km

• M1: 162,912 km (0.099 R)
• M2: 658,231 km (0.116 R)
• M3: 1,069,924 km (0.114 R)
• M4: 1,533,827 km (0.095 R)
• M5: 2,085,095 km (0.03 R)
• M6: 3,121,360 km (0.095 R)
• M7: 3,541,131 km (0.084 R)
• M8: 4,312,607 km (0.112 R)
• M9: 5,401,830 km (0.109 R)
• M10: 6,062,304 km (0.03 R)
• M11: 6,585,747 km (0.074 R)
• M12: 7,082,562 km (0.078 R)
• M13: 8,371,497 km (0.042 R)
• M14: 10,350,677 km (0.103 R)
• M15: 10,758,630 km (0.057 R)
• M16: 14,375,607 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 181.5

Radius: 8.1

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 4.55 AU - 5.33 AU

Year: 7203 Days

Day: 5.8 Hours

Environment

Temp: -213 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 32,331,496 km

• M1: 101,876 km (0.097 R)
• M2: 445,652 km (0.084 R)
• M3: 739,612 km (0.058 R)
• M4: 1,077,703 km (0.097 R)
• M5: 2,128,628 km (0.053 R)
• M6: 2,546,006 km (0.104 R)
• M7: 3,625,205 km (0.044 R)
• M8: 4,222,101 km (0.096 R)
• M9: 4,808,973 km (0.059 R)
• M10: 6,742,526 km (0.075 R)
• M11: 7,151,676 km (0.038 R)
• M12: 7,813,347 km (0.094 R)
• M13: 8,159,068 km (0.083 R)
• M14: 9,296,460 km (0.116 R)
• M15: 10,536,178 km (0.031 R)
• M16: 10,788,250 km (0.108 R)
• M17: 11,702,593 km (0.111 R)
• M18: 14,238,875 km (0.107 R)
• M19: 16,212,669 km (0.087 R)
• M20: 16,549,115 km (0.056 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 301.5

Radius: 6.9

Gravity: 6.33 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 6.35 AU - 6.39 AU

Year: 10547 Days

Day: 24.7 Hours

Environment

Temp: -212 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 32,331,496 km

• M1: 109,805 km (0.073 R)
• M2: 420,071 km (0.106 R)
• M3: 1,286,542 km (0.082 R)
• M4: 2,253,542 km (0.06 R)
• M5: 2,838,620 km (0.098 R)
• M6: 4,685,256 km (0.096 R)
• M7: 6,740,730 km (0.072 R)
• M8: 8,896,286 km (0.118 R)
• M9: 10,775,235 km (0.084 R)
• M10: 12,522,090 km (0.117 R)
• M11: 14,154,502 km (0.071 R)
• M12: 15,734,405 km (0.075 R)
• M13: 18,388,869 km (0.027 R)
• M14: 27,931,718 km (0.11 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 91.3

Radius: 3.5

Gravity: 7.45 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 6.69 AU - 8.29 AU

Year: 13447 Days

Day: 24 Hours

Environment

Temp: -228 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 32,331,496 km

• M1: 121,773 km (0.082 R)
• M2: 303,983 km (0.043 R)
• M3: 425,157 km (0.09 R)
• M4: 1,123,779 km (0.095 R)
• M5: 2,512,197 km (0.074 R)
• M6: 2,757,837 km (0.044 R)
• M7: 3,096,676 km (0.11 R)
• M8: 3,744,435 km (0.114 R)
• M9: 4,329,063 km (0.091 R)
• M10: 4,812,414 km (0.094 R)
• M11: 5,444,465 km (0.115 R)
• M12: 5,706,112 km (0.093 R)
• M13: 7,039,777 km (0.096 R)
• M14: 7,670,182 km (0.102 R)
• M15: 8,148,297 km (0.095 R)
• M16: 8,413,833 km (0.095 R)
• M17: 9,450,546 km (0.061 R)
• M18: 9,659,385 km (0.109 R)
• M19: 11,300,623 km (0.057 R)
• M20: 13,908,563 km (0.109 R)
• M21: 15,581,815 km (0.111 R)
• M22: 17,074,802 km (0.103 R)
• M23: 25,581,385 km (0.081 R)
• M24: 25,905,414 km (0.112 R)
• M25: 26,314,116 km (0.09 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 59

Radius: 7.9

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 8.99 AU - 9.79 AU

Year: 18876 Days

Day: 19.9 Hours

Environment

Temp: -234 °C

Axial Tilt: 46 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 32,331,496 km

• M1: 116,088 km (0.103 R)
• M2: 614,099 km (0.039 R)
• M3: 2,303,508 km (0.115 R)
• M4: 3,256,147 km (0.056 R)
• M5: 4,630,503 km (0.065 R)
• M6: 5,668,413 km (0.07 R)
• M7: 5,973,892 km (0.035 R)
• M8: 8,081,576 km (0.039 R)
• M9: 9,156,138 km (0.115 R)
• M10: 9,449,649 km (0.116 R)
• M11: 12,029,314 km (0.091 R)
• M12: 12,330,904 km (0.115 R)
• M13: 14,247,851 km (0.038 R)
• M14: 14,699,487 km (0.078 R)
• M15: 15,277,234 km (0.039 R)
• M16: 16,850,405 km (0.029 R)
• M17: 19,963,387 km (0.082 R)
• M18: 22,214,386 km (0.066 R)
• M19: 24,629,345 km (0.049 R)
• M20: 24,953,224 km (0.032 R)
• M21: 26,870,620 km (0.091 R)
• M22: 30,808,933 km (0.112 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 310 - 17,372 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit