🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.28

Radius: 0.6

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.39 AU - 0.63 AU

Year: 235 Days

Day: 27 Hours

Environment

Temp: -113 °C

Axial Tilt: 34.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.43

Radius: 1.15

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.51 AU - 0.57 AU

Year: 256 Days

Day: 28.6 Hours

Environment

Temp: -112 °C

Axial Tilt: 5.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.78

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.48 AU - 0.68 AU

Year: 285 Days

Day: 14.5 Hours

Environment

Temp: -136 °C

Axial Tilt: 42.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.3

Radius: 8.5

Gravity: 4.88 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.59 AU - 0.89 AU

Year: 411 Days

Day: 7.2 Hours

Environment

Temp: -133 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 46,608,252 km

• M1: 105,766 km (0.075 R)
• M2: 378,931 km (0.035 R)
• M3: 723,156 km (0.03 R)
• M4: 1,175,690 km (0.086 R)
• M5: 1,658,143 km (0.032 R)
• M6: 2,067,143 km (0.05 R)
• M7: 2,436,501 km (0.078 R)
• M8: 2,849,690 km (0.094 R)
• M9: 3,341,268 km (0.093 R)
• M10: 3,960,903 km (0.104 R)
• M11: 4,362,872 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 283.9

Radius: 13.2

Gravity: 1.63 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.75 AU - 0.91 AU

Year: 488 Days

Day: 6.4 Hours

Environment

Temp: -150 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 46,608,252 km

• M1: 164,408 km (0.111 R)
• M2: 587,022 km (0.044 R)
• M3: 1,120,638 km (0.082 R)
• M4: 1,538,315 km (0.12 R)
• M5: 1,964,818 km (0.104 R)
• M6: 3,316,286 km (0.026 R)
• M7: 3,742,041 km (0.049 R)
• M8: 4,229,880 km (0.097 R)
• M9: 4,691,539 km (0.066 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 408.8

Radius: 9.2

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.76 AU - 2.15 AU

Year: 1758 Days

Day: 5.9 Hours

Environment

Temp: -182 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 46,608,252 km

• M1: 114,442 km (0.033 R)
• M2: 502,948 km (0.078 R)
• M3: 923,767 km (0.119 R)
• M4: 1,250,489 km (0.032 R)
• M5: 1,636,750 km (0.051 R)
• M6: 2,014,934 km (0.118 R)
• M7: 3,005,421 km (0.04 R)
• M8: 3,906,150 km (0.119 R)
• M9: 4,219,558 km (0.069 R)
• M10: 4,897,385 km (0.111 R)
• M11: 5,844,340 km (0.112 R)
• M12: 6,444,527 km (0.081 R)
• M13: 7,085,404 km (0.088 R)
• M14: 8,181,358 km (0.117 R)
• M15: 10,943,383 km (0.12 R)
• M16: 11,604,756 km (0.026 R)
• M17: 12,036,046 km (0.102 R)
• M18: 12,329,557 km (0.063 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 42.5

Radius: 10.2

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 5.05 AU - 6.81 AU

Year: 9324 Days

Day: 11.9 Hours

Environment

Temp: -222 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 46,608,252 km

• M1: 127,009 km (0.098 R)
• M2: 513,270 km (0.065 R)
• M3: 904,469 km (0.065 R)
• M4: 2,759,034 km (0.068 R)
• M5: 4,645,014 km (0.11 R)
• M6: 7,562,920 km (0.094 R)
• M7: 8,433,281 km (0.092 R)
• M8: 8,993,525 km (0.08 R)
• M9: 12,677,073 km (0.081 R)
• M10: 15,111,479 km (0.04 R)
• M11: 16,187,238 km (0.08 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 668.8

Radius: 6.6

Gravity: 15.35 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 5.54 AU - 6.64 AU

Year: 9704 Days

Day: 23.8 Hours

Environment

Temp: -224 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 46,608,252 km

• M1: 82,129 km (0.104 R)
• M2: 322,982 km (0.113 R)
• M3: 577,448 km (0.112 R)
• M4: 881,131 km (0.093 R)
• M5: 1,264,401 km (0.088 R)
• M6: 1,943,276 km (0.045 R)
• M7: 2,270,896 km (0.108 R)
• M8: 3,172,821 km (0.099 R)
• M9: 3,603,514 km (0.113 R)
• M10: 4,378,580 km (0.116 R)
• M11: 4,610,756 km (0.095 R)
• M12: 5,863,040 km (0.116 R)
• M13: 7,408,236 km (0.048 R)
• M14: 10,385,084 km (0.079 R)
• M15: 11,995,056 km (0.069 R)
• M16: 12,221,548 km (0.09 R)
• M17: 15,904,198 km (0.094 R)
• M18: 18,935,650 km (0.049 R)
• M19: 21,572,013 km (0.084 R)
• M20: 27,756,987 km (0.077 R)
• M21: 28,554,194 km (0.073 R)
• M22: 29,264,335 km (0.112 R)
• M23: 30,508,840 km (0.111 R)
• M24: 31,465,219 km (0.072 R)
• M25: 32,331,840 km (0.073 R)
• M26: 36,548,256 km (0.04 R)
• M27: 38,234,673 km (0.081 R)
• M28: 38,602,833 km (0.115 R)
• M29: 41,116,975 km (0.111 R)
• M30: 41,632,639 km (0.098 R)
• M31: 44,410,521 km (0.118 R)
• M32: 45,089,696 km (0.117 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 395 - 10,637 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit