🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.65

Radius: 1.48

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.52 AU - 0.66 AU

Year: 297 Days

Day: 33.9 Hours

Environment

Temp: -129 °C

Axial Tilt: 1.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.9

Radius: 12.4

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.79 AU - 0.87 AU

Year: 496 Days

Day: 5.1 Hours

Environment

Temp: -147 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,777,225 km

• M1: 154,535 km (0.076 R)
• M2: 584,778 km (0.035 R)
• M3: 978,520 km (0.088 R)
• M4: 1,678,189 km (0.111 R)
• M5: 2,159,296 km (0.057 R)
• M6: 2,732,405 km (0.12 R)
• M7: 4,010,270 km (0.108 R)
• M8: 5,035,913 km (0.08 R)
• M9: 5,469,298 km (0.078 R)
• M10: 5,945,019 km (0.043 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 194.3

Radius: 8.2

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.3 AU - 1.44 AU

Year: 1052 Days

Day: 8.2 Hours

Environment

Temp: -178 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 52,777,225 km

• M1: 102,026 km (0.05 R)
• M2: 414,087 km (0.081 R)
• M3: 691,142 km (0.108 R)
• M4: 1,246,449 km (0.063 R)
• M5: 1,618,350 km (0.108 R)
• M6: 1,992,644 km (0.111 R)
• M7: 2,305,602 km (0.118 R)
• M8: 2,651,323 km (0.043 R)
• M9: 3,321,372 km (0.113 R)
• M10: 3,887,450 km (0.104 R)
• M11: 5,043,692 km (0.079 R)
• M12: 5,522,705 km (0.078 R)
• M13: 5,809,783 km (0.047 R)
• M14: 6,472,950 km (0.117 R)
• M15: 6,772,146 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 534.7

Radius: 11.4

Gravity: 4.11 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.3 AU - 1.92 AU

Year: 1340 Days

Day: 14.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,777,225 km

• M1: 141,819 km (0.115 R)
• M2: 829,371 km (0.1 R)
• M3: 1,304,493 km (0.071 R)
• M4: 1,737,729 km (0.108 R)
• M5: 2,189,814 km (0.074 R)
• M6: 3,051,049 km (0.067 R)
• M7: 3,423,846 km (0.099 R)
• M8: 7,868,549 km (0.112 R)
• M9: 10,022,609 km (0.065 R)
• M10: 11,285,963 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 654.9

Radius: 14

Gravity: 3.34 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 2.24 AU - 2.96 AU

Year: 2750 Days

Day: 6.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 46.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 52,777,225 km

• M1: 174,132 km (0.1 R)
• M2: 708,645 km (0.072 R)
• M3: 1,726,210 km (0.091 R)
• M4: 2,432,461 km (0.085 R)
• M5: 3,521,833 km (0.038 R)
• M6: 4,177,969 km (0.035 R)
• M7: 4,823,783 km (0.045 R)
• M8: 5,266,743 km (0.086 R)
• M9: 6,316,471 km (0.112 R)
• M10: 6,935,058 km (0.113 R)
• M11: 7,501,436 km (0.086 R)
• M12: 8,098,630 km (0.12 R)
• M13: 8,592,453 km (0.112 R)
• M14: 9,246,794 km (0.109 R)
• M15: 15,438,500 km (0.108 R)
• M16: 16,148,342 km (0.106 R)
• M17: 17,361,730 km (0.066 R)
• M18: 17,797,808 km (0.085 R)
• M19: 19,150,023 km (0.042 R)
• M20: 19,910,579 km (0.104 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 582.4

Radius: 5.5

Gravity: 19.25 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 6.62 AU - 8.92 AU

Year: 14208 Days

Day: 20.5 Hours

Environment

Temp: -233 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 52,777,225 km

• M1: 74,051 km (0.073 R)
• M2: 455,376 km (0.042 R)
• M3: 911,350 km (0.106 R)
• M4: 1,273,527 km (0.067 R)
• M5: 2,720,587 km (0.094 R)
• M6: 5,326,731 km (0.064 R)
• M7: 6,978,741 km (0.081 R)
• M8: 8,081,875 km (0.11 R)
• M9: 10,081,251 km (0.102 R)
• M10: 10,965,823 km (0.062 R)
• M11: 11,544,318 km (0.112 R)
• M12: 18,331,873 km (0.076 R)
• M13: 21,021,044 km (0.091 R)
• M14: 21,197,270 km (0.027 R)
• M15: 24,445,040 km (0.119 R)
• M16: 26,957,835 km (0.1 R)
• M17: 31,328,188 km (0.107 R)
• M18: 36,148,081 km (0.09 R)
• M19: 36,911,180 km (0.085 R)
• M20: 45,878,825 km (0.057 R)
• M21: 46,324,477 km (0.109 R)
• M22: 49,681,752 km (0.077 R)
• M23: 54,682,510 km (0.059 R)
• M24: 55,351,212 km (0.079 R)
• M25: 56,025,450 km (0.042 R)
• M26: 56,534,681 km (0.12 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 435.9

Radius: 5.1

Gravity: 16.76 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 6.71 AU - 9.03 AU

Year: 14483 Days

Day: 24.6 Hours

Environment

Temp: -216 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 52,777,225 km

• M1: 64,177 km (0.107 R)
• M2: 819,796 km (0.115 R)
• M3: 2,343,002 km (0.088 R)
• M4: 7,180,099 km (0.039 R)
• M5: 8,502,993 km (0.047 R)
• M6: 10,401,839 km (0.072 R)
• M7: 12,687,545 km (0.093 R)
• M8: 13,244,348 km (0.075 R)
• M9: 15,635,521 km (0.109 R)
• M10: 26,650,113 km (0.051 R)
• M11: 27,255,834 km (0.086 R)
• M12: 28,077,725 km (0.082 R)
• M13: 28,285,666 km (0.101 R)
• M14: 37,350,400 km (0.091 R)
• M15: 38,748,541 km (0.097 R)
• M16: 42,875,797 km (0.119 R)
• M17: 44,549,049 km (0.069 R)
• M18: 47,139,785 km (0.108 R)
• M19: 48,025,255 km (0.114 R)
• M20: 50,134,286 km (0.077 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 385 - 11,369 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit