🌌 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: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.54 AU - 0.6 AU

Year: 282 Days

Day: 44 Hours

Environment

Temp: -125 °C

Axial Tilt: 25.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 67,279,831 km

• M1: 784,491 km (0.118 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.43

Radius: 0.71

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.56 AU - 0.78 AU

Year: 360 Days

Day: 28.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 45 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504.1

Radius: 13.2

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.72 AU - 0.94 AU

Year: 496 Days

Day: 6.6 Hours

Environment

Temp: -150 °C

Axial Tilt: 101.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 67,279,831 km

• M1: 164,109 km (0.082 R)
• M2: 644,617 km (0.085 R)
• M3: 1,088,474 km (0.103 R)
• M4: 1,517,521 km (0.079 R)
• M5: 1,949,559 km (0.12 R)
• M6: 2,910,875 km (0.05 R)
• M7: 3,529,762 km (0.027 R)
• M8: 3,942,203 km (0.052 R)
• M9: 5,251,035 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 305.8

Radius: 13.7

Gravity: 1.63 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.99 AU - 1.19 AU

Year: 747 Days

Day: 12.2 Hours

Environment

Temp: -162 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 67,279,831 km

• M1: 170,392 km (0.117 R)
• M2: 615,894 km (0.118 R)
• M3: 1,292,974 km (0.107 R)
• M4: 1,859,651 km (0.056 R)
• M5: 2,521,173 km (0.073 R)
• M6: 2,990,761 km (0.065 R)
• M7: 3,812,951 km (0.07 R)
• M8: 4,407,452 km (0.09 R)
• M9: 5,713,741 km (0.06 R)
• M10: 6,251,545 km (0.043 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 405.6

Radius: 9.6

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.59 AU - 1.71 AU

Year: 1390 Days

Day: 7.5 Hours

Environment

Temp: -175 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 67,279,831 km

• M1: 119,379 km (0.072 R)
• M2: 450,140 km (0.1 R)
• M3: 782,846 km (0.069 R)
• M4: 1,308,233 km (0.116 R)
• M5: 1,691,952 km (0.103 R)
• M6: 2,046,200 km (0.106 R)
• M7: 2,415,407 km (0.047 R)
• M8: 2,816,180 km (0.105 R)
• M9: 3,390,337 km (0.095 R)
• M10: 3,991,720 km (0.054 R)
• M11: 4,292,412 km (0.113 R)
• M12: 4,662,517 km (0.074 R)
• M13: 5,015,568 km (0.117 R)
• M14: 6,183,778 km (0.096 R)
• M15: 6,796,680 km (0.049 R)
• M16: 7,154,219 km (0.099 R)
• M17: 8,330,208 km (0.087 R)
• M18: 8,879,830 km (0.111 R)
• M19: 9,719,673 km (0.089 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 251.7

Radius: 10.6

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 1.77 AU - 2.11 AU

Year: 1773 Days

Day: 11.8 Hours

Environment

Temp: -178 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 67,279,831 km

• M1: 140,472 km (0.082 R)
• M2: 618,737 km (0.077 R)
• M3: 1,193,941 km (0.025 R)
• M4: 1,559,857 km (0.108 R)
• M5: 2,021,366 km (0.07 R)
• M6: 2,408,975 km (0.031 R)
• M7: 2,990,162 km (0.116 R)
• M8: 3,364,905 km (0.076 R)
• M9: 5,074,809 km (0.063 R)
• M10: 7,058,177 km (0.087 R)
• M11: 7,881,564 km (0.049 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 196.9

Radius: 9.8

Gravity: 2.05 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 4.11 AU - 5.9 AU

Year: 7334 Days

Day: 9.3 Hours

Environment

Temp: -225 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 67,279,831 km

• M1: 121,922 km (0.053 R)
• M2: 541,544 km (0.067 R)
• M3: 870,061 km (0.056 R)
• M4: 1,748,350 km (0.087 R)
• M5: 2,229,607 km (0.073 R)
• M6: 2,900,852 km (0.118 R)
• M7: 3,763,882 km (0.062 R)
• M8: 4,176,324 km (0.09 R)
• M9: 4,522,942 km (0.071 R)
• M10: 5,015,119 km (0.098 R)
• M11: 6,253,939 km (0.12 R)
• M12: 6,678,049 km (0.118 R)
• M13: 10,709,562 km (0.085 R)
• M14: 11,185,582 km (0.052 R)
• M15: 14,762,767 km (0.104 R)
• M16: 17,990,939 km (0.077 R)
• M17: 18,417,443 km (0.062 R)
• M18: 19,481,084 km (0.111 R)
• M19: 22,006,146 km (0.087 R)
• M20: 23,203,378 km (0.112 R)
• M21: 23,708,719 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 599.8

Radius: 4.2

Gravity: 34 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 7.12 AU - 10.92 AU

Year: 17771 Days

Day: 17.3 Hours

Environment

Temp: -233 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 67,279,831 km

• M1: 55,950 km (0.1 R)
• M2: 283,638 km (0.115 R)
• M3: 574,007 km (0.117 R)
• M4: 768,035 km (0.108 R)
• M5: 1,053,019 km (0.109 R)
• M6: 1,576,014 km (0.032 R)
• M7: 1,726,060 km (0.118 R)
• M8: 2,602,405 km (0.082 R)
• M9: 3,162,798 km (0.051 R)
• M10: 3,918,716 km (0.084 R)
• M11: 4,788,029 km (0.108 R)
• M12: 6,137,552 km (0.07 R)
• M13: 7,121,457 km (0.093 R)
• M14: 8,405,306 km (0.086 R)
• M15: 8,761,798 km (0.059 R)
• M16: 10,346,787 km (0.115 R)
• M17: 11,607,299 km (0.112 R)
• M18: 14,573,376 km (0.117 R)
• M19: 17,103,525 km (0.095 R)
• M20: 18,599,952 km (0.095 R)
• M21: 18,857,560 km (0.087 R)
• M22: 22,426,366 km (0.118 R)
• M23: 23,210,259 km (0.101 R)
• M24: 24,522,681 km (0.095 R)
• M25: 24,936,319 km (0.113 R)
• M26: 26,528,639 km (0.094 R)
• M27: 28,527,416 km (0.112 R)
• M28: 31,832,632 km (0.109 R)
• M29: 36,445,482 km (0.081 R)
• M30: 44,781,375 km (0.066 R)
• M31: 48,087,488 km (0.083 R)
• M32: 50,379,776 km (0.08 R)
• M33: 51,891,163 km (0.11 R)
• M34: 53,605,555 km (0.072 R)
• M35: 54,827,919 km (0.1 R)
• M36: 59,159,974 km (0.041 R)
• M37: 62,171,229 km (0.061 R)
• M38: 64,299,708 km (0.083 R)
• M39: 67,279,847 km (0.112 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 415 - 19,353 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit