🌌 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: 1.38

Radius: 1.14

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.51 AU - 0.57 AU

Year: 256 Days

Day: 23.3 Hours

Environment

Temp: -130 °C

Axial Tilt: 20.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 397.6

Radius: 9.7

Gravity: 4.23 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.66 AU - 0.8 AU

Year: 403 Days

Day: 10.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 46,943,379 km

• M1: 121,025 km (0.069 R)
• M2: 626,815 km (0.116 R)
• M3: 999,912 km (0.071 R)
• M4: 1,604,736 km (0.091 R)
• M5: 1,975,440 km (0.033 R)
• M6: 2,517,283 km (0.087 R)
• M7: 2,951,416 km (0.065 R)
• M8: 3,347,252 km (0.082 R)
• M9: 3,910,189 km (0.062 R)
• M10: 4,285,081 km (0.094 R)
• M11: 4,615,842 km (0.063 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 484.4

Radius: 10.1

Gravity: 4.75 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.6 AU - 0.94 AU

Year: 436 Days

Day: 10.3 Hours

Environment

Temp: -152 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 46,943,379 km

• M1: 125,662 km (0.036 R)
• M2: 453,730 km (0.074 R)
• M3: 989,889 km (0.088 R)
• M4: 1,304,045 km (0.106 R)
• M5: 2,210,757 km (0.072 R)
• M6: 3,101,164 km (0.096 R)
• M7: 4,583,380 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 470.3

Radius: 8.9

Gravity: 5.94 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 1.42 AU - 1.64 AU

Year: 1222 Days

Day: 10.6 Hours

Environment

Temp: -182 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 46,943,379 km

• M1: 110,702 km (0.076 R)
• M2: 461,061 km (0.099 R)
• M3: 907,161 km (0.112 R)
• M4: 1,330,075 km (0.102 R)
• M5: 1,769,144 km (0.102 R)
• M6: 2,237,236 km (0.066 R)
• M7: 2,748,562 km (0.043 R)
• M8: 3,250,911 km (0.084 R)
• M9: 3,584,066 km (0.098 R)
• M10: 6,194,997 km (0.106 R)
• M11: 6,824,655 km (0.098 R)
• M12: 7,131,181 km (0.106 R)
• M13: 8,370,450 km (0.054 R)
• M14: 9,055,458 km (0.118 R)
• M15: 9,956,037 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 960.9

Radius: 8.6

Gravity: 12.99 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 3.94 AU - 6.42 AU

Year: 7612 Days

Day: 10.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 46,943,379 km

• M1: 111,301 km (0.093 R)
• M2: 795,861 km (0.075 R)
• M3: 1,161,927 km (0.072 R)
• M4: 1,555,668 km (0.069 R)
• M5: 2,103,496 km (0.107 R)
• M6: 2,795,087 km (0.054 R)
• M7: 3,960,454 km (0.108 R)
• M8: 4,479,110 km (0.03 R)
• M9: 5,991,993 km (0.087 R)
• M10: 6,527,703 km (0.118 R)
• M11: 8,502,694 km (0.09 R)
• M12: 13,529,033 km (0.107 R)
• M13: 14,895,161 km (0.114 R)
• M14: 16,694,524 km (0.044 R)
• M15: 22,530,187 km (0.076 R)
• M16: 24,176,661 km (0.08 R)
• M17: 28,890,042 km (0.113 R)
• M18: 29,901,024 km (0.081 R)
• M19: 31,993,599 km (0.11 R)
• M20: 32,639,862 km (0.094 R)
• M21: 36,702,192 km (0.067 R)
• M22: 38,368,862 km (0.108 R)
• M23: 39,837,165 km (0.108 R)
• M24: 44,333,329 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280.9

Radius: 10.2

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 5.56 AU - 5.62 AU

Year: 8534 Days

Day: 6.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 46,943,379 km

• M1: 127,757 km (0.103 R)
• M2: 530,474 km (0.102 R)
• M3: 962,812 km (0.072 R)
• M4: 1,370,017 km (0.105 R)
• M5: 2,049,042 km (0.094 R)
• M6: 2,391,322 km (0.069 R)
• M7: 3,950,581 km (0.108 R)
• M8: 5,013,473 km (0.075 R)
• M9: 6,882,848 km (0.093 R)
• M10: 10,339,158 km (0.072 R)
• M11: 12,388,648 km (0.102 R)
• M12: 14,302,005 km (0.102 R)
• M13: 16,465,789 km (0.112 R)
• M14: 19,108,734 km (0.112 R)
• M15: 20,283,377 km (0.069 R)
• M16: 22,775,827 km (0.06 R)
• M17: 30,070,219 km (0.106 R)

Asteroid Belt

Center: 6.33 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 7.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 438.6

Radius: 7.8

Gravity: 7.21 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 5.7 AU - 8.42 AU

Year: 12112 Days

Day: 23.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 46,943,379 km

• M1: 97,538 km (0.106 R)
• M2: 530,773 km (0.115 R)
• M3: 1,533,528 km (0.11 R)
• M4: 2,319,365 km (0.098 R)
• M5: 2,687,975 km (0.115 R)
• M6: 3,209,024 km (0.104 R)
• M7: 7,555,889 km (0.105 R)
• M8: 8,105,512 km (0.085 R)
• M9: 13,873,557 km (0.11 R)
• M10: 20,418,913 km (0.117 R)
• M11: 30,522,005 km (0.063 R)
• M12: 34,134,345 km (0.071 R)
• M13: 39,255,678 km (0.064 R)
• M14: 46,105,166 km (0.109 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: 426 - 18,221 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit