🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.93

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.5 AU - 0.58 AU

Year: 256 Days

Day: 46.5 Hours

Environment

Temp: -113 °C

Axial Tilt: 144.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 659.2

Radius: 14

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.53 AU - 0.85 AU

Year: 370 Days

Day: 13.9 Hours

Environment

Temp: -133 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 55,211,021 km

• M1: 174,132 km (0.045 R)
• M2: 662,270 km (0.075 R)
• M3: 1,130,062 km (0.049 R)
• M4: 2,000,423 km (0.044 R)
• M5: 2,457,893 km (0.092 R)
• M6: 3,372,385 km (0.113 R)
• M7: 4,169,592 km (0.094 R)
• M8: 4,641,573 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 187.8

Radius: 10.8

Gravity: 1.61 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 1.05 AU - 1.13 AU

Year: 735 Days

Day: 14.8 Hours

Environment

Temp: -167 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,211,021 km

• M1: 134,488 km (0.12 R)
• M2: 485,595 km (0.081 R)
• M3: 950,246 km (0.118 R)
• M4: 1,367,624 km (0.088 R)
• M5: 1,729,651 km (0.11 R)
• M6: 2,400,298 km (0.108 R)
• M7: 2,751,404 km (0.03 R)
• M8: 4,392,642 km (0.083 R)
• M9: 4,804,485 km (0.108 R)
• M10: 5,430,702 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.8

Radius: 11.1

Gravity: 4.01 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 1.18 AU - 1.86 AU

Year: 1210 Days

Day: 8.2 Hours

Environment

Temp: -188 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 55,211,021 km

• M1: 138,079 km (0.071 R)
• M2: 487,689 km (0.064 R)
• M3: 858,393 km (0.1 R)
• M4: 1,427,313 km (0.112 R)
• M5: 2,356,914 km (0.117 R)
• M6: 2,732,555 km (0.088 R)
• M7: 3,121,060 km (0.03 R)
• M8: 3,820,430 km (0.077 R)
• M9: 4,674,933 km (0.025 R)
• M10: 5,253,877 km (0.104 R)
• M11: 6,354,170 km (0.074 R)
• M12: 6,737,888 km (0.049 R)
• M13: 7,209,121 km (0.117 R)
• M14: 8,165,201 km (0.089 R)
• M15: 8,565,226 km (0.08 R)
• M16: 9,318,152 km (0.12 R)
• M17: 10,084,392 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129.6

Radius: 11

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.64 AU - 2.04 AU

Year: 1612 Days

Day: 13.4 Hours

Environment

Temp: -193 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,211,021 km

• M1: 136,882 km (0.089 R)
• M2: 713,582 km (0.114 R)
• M3: 1,138,290 km (0.101 R)
• M4: 1,867,430 km (0.116 R)
• M5: 2,337,168 km (0.091 R)
• M6: 3,737,852 km (0.084 R)
• M7: 4,300,789 km (0.104 R)
• M8: 6,055,871 km (0.109 R)
• M9: 7,006,117 km (0.095 R)
• M10: 8,077,088 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 424.5

Radius: 9

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 4.38 AU - 5.52 AU

Year: 7111 Days

Day: 12.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 55,211,021 km

• M1: 111,899 km (0.101 R)
• M2: 399,726 km (0.099 R)
• M3: 895,044 km (0.067 R)
• M4: 1,175,091 km (0.118 R)
• M5: 1,563,447 km (0.101 R)
• M6: 1,949,111 km (0.112 R)
• M7: 3,655,424 km (0.093 R)
• M8: 3,976,012 km (0.052 R)
• M9: 4,753,323 km (0.072 R)
• M10: 5,628,620 km (0.112 R)
• M11: 6,088,933 km (0.106 R)
• M12: 6,980,835 km (0.058 R)
• M13: 9,482,261 km (0.075 R)
• M14: 11,336,227 km (0.077 R)
• M15: 11,872,237 km (0.075 R)
• M16: 12,527,326 km (0.051 R)
• M17: 14,467,311 km (0.11 R)
• M18: 17,611,260 km (0.115 R)
• M19: 18,463,220 km (0.076 R)
• M20: 20,319,879 km (0.052 R)
• M21: 22,525,251 km (0.086 R)
• M22: 24,400,759 km (0.103 R)
• M23: 32,169,227 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 735.2

Radius: 6.6

Gravity: 16.88 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 5.26 AU - 8.72 AU

Year: 11932 Days

Day: 20.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 55,211,021 km

• M1: 86,468 km (0.061 R)
• M2: 392,994 km (0.093 R)
• M3: 1,253,780 km (0.079 R)
• M4: 1,772,585 km (0.081 R)
• M5: 2,784,914 km (0.098 R)
• M6: 3,203,638 km (0.095 R)
• M7: 3,610,395 km (0.062 R)
• M8: 4,907,409 km (0.119 R)
• M9: 5,733,039 km (0.062 R)
• M10: 12,780,894 km (0.068 R)
• M11: 15,082,607 km (0.075 R)
• M12: 17,112,351 km (0.119 R)
• M13: 19,481,682 km (0.083 R)
• M14: 19,980,591 km (0.096 R)
• M15: 21,793,717 km (0.098 R)
• M16: 22,421,579 km (0.099 R)
• M17: 25,644,516 km (0.08 R)
• M18: 29,379,825 km (0.089 R)
• M19: 36,259,681 km (0.063 R)
• M20: 38,554,662 km (0.097 R)
• M21: 42,314,207 km (0.106 R)
• M22: 45,000,087 km (0.116 R)
• M23: 45,289,259 km (0.069 R)
• M24: 45,871,345 km (0.099 R)
• M25: 55,045,733 km (0.09 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 207 - 13,926 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit