🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.91

Radius: 0.96

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.51 AU - 0.61 AU

Year: 275 Days

Day: 16.4 Hours

Environment

Temp: -128 °C

Axial Tilt: 44.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 50,799,113 km

• M1: 22,440 km (0.069 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139

Radius: 14

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.56 AU - 0.8 AU

Year: 368 Days

Day: 6.4 Hours

Environment

Temp: -141 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 50,799,113 km

• M1: 174,282 km (0.102 R)
• M2: 690,693 km (0.066 R)
• M3: 1,490,892 km (0.073 R)
• M4: 2,151,367 km (0.061 R)
• M5: 2,593,877 km (0.088 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 405.6

Radius: 13.2

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.88 AU - 0.92 AU

Year: 560 Days

Day: 13.9 Hours

Environment

Temp: -163 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 50,799,113 km

• M1: 166,203 km (0.063 R)
• M2: 1,299,258 km (0.11 R)
• M3: 1,722,769 km (0.067 R)
• M4: 2,438,595 km (0.04 R)
• M5: 3,174,616 km (0.108 R)
• M6: 3,620,268 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.6

Radius: 14.4

Gravity: 2.4 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 1.08 AU - 1.22 AU

Year: 809 Days

Day: 12.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 50,799,113 km

• M1: 179,218 km (0.028 R)
• M2: 680,072 km (0.078 R)
• M3: 1,182,721 km (0.079 R)
• M4: 2,113,668 km (0.069 R)
• M5: 3,413,823 km (0.108 R)
• M6: 4,354,644 km (0.1 R)
• M7: 5,664,075 km (0.095 R)
• M8: 6,300,015 km (0.057 R)
• M9: 6,855,472 km (0.038 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 389.5

Radius: 10.1

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 2.18 AU - 2.72 AU

Year: 2516 Days

Day: 11.4 Hours

Environment

Temp: -201 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 50,799,113 km

• M1: 125,662 km (0.064 R)
• M2: 541,095 km (0.066 R)
• M3: 1,028,485 km (0.066 R)
• M4: 1,462,918 km (0.112 R)
• M5: 1,829,432 km (0.085 R)
• M6: 2,295,131 km (0.092 R)
• M7: 2,823,959 km (0.071 R)
• M8: 3,366,401 km (0.113 R)
• M9: 3,867,255 km (0.111 R)
• M10: 4,241,100 km (0.059 R)
• M11: 5,105,626 km (0.099 R)
• M12: 7,071,791 km (0.106 R)
• M13: 8,438,068 km (0.096 R)
• M14: 9,938,235 km (0.106 R)
• M15: 10,860,805 km (0.113 R)
• M16: 11,230,611 km (0.107 R)
• M17: 12,152,284 km (0.084 R)
• M18: 12,999,606 km (0.056 R)
• M19: 13,885,674 km (0.108 R)
• M20: 14,632,018 km (0.072 R)
• M21: 15,404,990 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 973.2

Radius: 11.4

Gravity: 7.49 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 2.33 AU - 3.09 AU

Year: 2927 Days

Day: 12.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 50,799,113 km

• M1: 141,968 km (0.086 R)
• M2: 760,406 km (0.116 R)
• M3: 1,478,625 km (0.096 R)
• M4: 2,688,274 km (0.119 R)
• M5: 4,310,513 km (0.096 R)
• M6: 4,772,471 km (0.103 R)
• M7: 5,267,341 km (0.098 R)
• M8: 5,933,800 km (0.076 R)
• M9: 6,418,646 km (0.072 R)
• M10: 7,467,926 km (0.11 R)
• M11: 7,965,787 km (0.099 R)
• M12: 8,450,335 km (0.059 R)
• M13: 9,516,818 km (0.117 R)
• M14: 11,005,167 km (0.094 R)
• M15: 11,432,718 km (0.115 R)
• M16: 11,827,208 km (0.095 R)
• M17: 12,230,524 km (0.047 R)
• M18: 12,970,435 km (0.068 R)
• M19: 15,159,650 km (0.086 R)
• M20: 15,905,096 km (0.104 R)
• M21: 20,194,067 km (0.026 R)
• M22: 22,432,350 km (0.075 R)
• M23: 22,843,744 km (0.094 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 263.4

Radius: 5.5

Gravity: 8.71 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 8.4 AU - 9.52 AU

Year: 17594 Days

Day: 23.6 Hours

Environment

Temp: -228 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 50,799,113 km

• M1: 68,516 km (0.115 R)
• M2: 288,125 km (0.095 R)
• M3: 623,374 km (0.1 R)
• M4: 1,424,471 km (0.108 R)
• M5: 1,730,698 km (0.078 R)
• M6: 2,743,625 km (0.1 R)
• M7: 3,513,904 km (0.077 R)
• M8: 4,847,121 km (0.072 R)
• M9: 8,371,347 km (0.116 R)
• M10: 10,434,601 km (0.087 R)
• M11: 11,526,815 km (0.079 R)
• M12: 13,367,168 km (0.111 R)
• M13: 15,739,940 km (0.085 R)
• M14: 16,374,235 km (0.034 R)
• M15: 17,996,325 km (0.031 R)
• M16: 22,337,954 km (0.119 R)
• M17: 24,702,648 km (0.036 R)
• M18: 26,434,093 km (0.094 R)
• M19: 30,460,071 km (0.079 R)
• M20: 31,113,515 km (0.05 R)
• M21: 41,668,841 km (0.111 R)
• M22: 45,940,758 km (0.12 R)
• M23: 46,799,899 km (0.032 R)
• M24: 47,088,623 km (0.106 R)
• M25: 49,143,349 km (0.084 R)
• M26: 50,041,984 km (0.116 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 293 - 12,904 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit