🌌 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: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.45 AU - 0.73 AU

Year: 297 Days

Day: 12.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.95

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.52 AU - 0.78 AU

Year: 344 Days

Day: 25.3 Hours

Environment

Temp: -138 °C

Axial Tilt: 22.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 169.9

Radius: 8.6

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.94 AU - 0.94 AU

Year: 598 Days

Day: 9.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 52.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 35,330,667 km

• M1: 106,962 km (0.081 R)
• M2: 414,685 km (0.07 R)
• M3: 761,453 km (0.062 R)
• M4: 1,112,859 km (0.114 R)
• M5: 1,429,707 km (0.043 R)
• M6: 1,716,785 km (0.11 R)
• M7: 2,192,506 km (0.092 R)
• M8: 2,488,411 km (0.111 R)
• M9: 3,235,204 km (0.109 R)
• M10: 4,237,360 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.5

Radius: 13.1

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.87 AU - 1.27 AU

Year: 726 Days

Day: 8.9 Hours

Environment

Temp: -170 °C

Axial Tilt: 47.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 35,330,667 km

• M1: 164,707 km (0.051 R)
• M2: 620,682 km (0.047 R)
• M3: 1,251,985 km (0.117 R)
• M4: 1,688,511 km (0.107 R)
• M5: 2,333,727 km (0.091 R)
• M6: 3,621,316 km (0.064 R)
• M7: 6,219,831 km (0.028 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 893.7

Radius: 14.9

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 2.08 AU - 3.02 AU

Year: 2671 Days

Day: 14.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 35,330,667 km

• M1: 185,801 km (0.114 R)
• M2: 877,990 km (0.064 R)
• M3: 1,543,252 km (0.065 R)
• M4: 2,174,405 km (0.082 R)
• M5: 2,877,665 km (0.12 R)
• M6: 6,839,016 km (0.085 R)
• M7: 7,447,281 km (0.102 R)
• M8: 8,058,389 km (0.1 R)
• M9: 8,633,443 km (0.05 R)
• M10: 9,866,129 km (0.101 R)
• M11: 10,967,020 km (0.059 R)
• M12: 12,456,566 km (0.113 R)
• M13: 13,647,814 km (0.05 R)
• M14: 14,813,630 km (0.084 R)
• M15: 15,575,382 km (0.077 R)
• M16: 17,177,276 km (0.118 R)
• M17: 18,189,755 km (0.039 R)
• M18: 19,182,187 km (0.098 R)
• M19: 19,661,648 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 13

Radius: 8.6

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 3.21 AU - 3.57 AU

Year: 4095 Days

Day: 8.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 35,330,667 km

• M1: 127,757 km (0.107 R)
• M2: 412,292 km (0.096 R)
• M3: 1,729,800 km (0.096 R)
• M4: 2,819,022 km (0.079 R)
• M5: 3,491,315 km (0.103 R)
• M6: 4,600,583 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 913.5

Radius: 11.3

Gravity: 7.15 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 4.01 AU - 4.9 AU

Year: 6158 Days

Day: 14.5 Hours

Environment

Temp: -206 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 35,330,667 km

• M1: 141,819 km (0.114 R)
• M2: 524,041 km (0.047 R)
• M3: 1,137,393 km (0.097 R)
• M4: 1,495,530 km (0.1 R)
• M5: 2,686,927 km (0.082 R)
• M6: 3,165,641 km (0.042 R)
• M7: 3,701,051 km (0.097 R)
• M8: 4,244,092 km (0.061 R)
• M9: 5,398,389 km (0.086 R)
• M10: 5,901,786 km (0.095 R)
• M11: 9,121,132 km (0.083 R)
• M12: 10,161,585 km (0.112 R)
• M13: 10,734,994 km (0.085 R)
• M14: 11,431,072 km (0.087 R)
• M15: 12,639,823 km (0.098 R)
• M16: 14,342,097 km (0.088 R)
• M17: 14,941,985 km (0.102 R)
• M18: 16,580,530 km (0.117 R)
• M19: 19,330,588 km (0.093 R)
• M20: 19,767,863 km (0.098 R)
• M21: 31,541,813 km (0.081 R)
• M22: 32,046,557 km (0.093 R)
• M23: 32,659,459 km (0.104 R)
• M24: 36,061,315 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 562.2

Radius: 14.8

Gravity: 2.57 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 4.18 AU - 5.5 AU

Year: 6985 Days

Day: 14 Hours

Environment

Temp: -221 °C

Axial Tilt: 49.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 35,330,667 km

• M1: 186,549 km (0.04 R)
• M2: 1,505,403 km (0.078 R)
• M3: 2,189,814 km (0.114 R)
• M4: 2,920,450 km (0.091 R)
• M5: 5,842,246 km (0.075 R)
• M6: 6,456,046 km (0.071 R)
• M7: 8,723,650 km (0.094 R)
• M8: 9,836,210 km (0.091 R)
• M9: 10,993,349 km (0.094 R)
• M10: 13,357,145 km (0.033 R)
• M11: 14,834,274 km (0.086 R)
• M12: 17,644,620 km (0.086 R)
• M13: 19,070,737 km (0.105 R)
• M14: 19,704,882 km (0.028 R)
• M15: 32,360,712 km (0.079 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 199 - 15,118 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit