🌌 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: 3.03

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.45 AU - 0.69 AU

Year: 278 Days

Day: 15 Hours

Environment

Temp: -132 °C

Axial Tilt: 0.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 71,019,485 km

• M1: 37,250 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.1

Radius: 11.9

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.69 AU - 1.03 AU

Year: 515 Days

Day: 10.8 Hours

Environment

Temp: -157 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 71,019,485 km

• M1: 148,700 km (0.091 R)
• M2: 552,764 km (0.118 R)
• M3: 1,061,696 km (0.106 R)
• M4: 1,576,014 km (0.094 R)
• M5: 2,712,060 km (0.062 R)
• M6: 3,366,999 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 477.6

Radius: 14.3

Gravity: 2.34 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.58 AU - 1.8 AU

Year: 1419 Days

Day: 7.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,019,485 km

• M1: 177,872 km (0.113 R)
• M2: 670,049 km (0.089 R)
• M3: 1,250,040 km (0.116 R)
• M4: 2,983,580 km (0.033 R)
• M5: 4,251,871 km (0.069 R)
• M6: 4,846,821 km (0.098 R)
• M7: 6,317,219 km (0.089 R)
• M8: 8,338,436 km (0.068 R)
• M9: 9,452,491 km (0.12 R)
• M10: 10,030,088 km (0.107 R)
• M11: 10,502,668 km (0.04 R)
• M12: 11,526,666 km (0.09 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 13.5

Radius: 12

Gravity: 0.09 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 1.94 AU - 2.28 AU

Year: 1979 Days

Day: 9.3 Hours

Environment

Temp: -182 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 71,019,485 km

• M1: 149,299 km (0.047 R)
• M2: 670,647 km (0.108 R)
• M3: 1,421,030 km (0.112 R)
• M4: 1,977,235 km (0.057 R)
• M5: 2,595,523 km (0.086 R)
• M6: 3,235,353 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 197.3

Radius: 9.4

Gravity: 2.23 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 2.91 AU - 3.01 AU

Year: 3288 Days

Day: 7.5 Hours

Environment

Temp: -205 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 71,019,485 km

• M1: 116,836 km (0.109 R)
• M2: 441,912 km (0.112 R)
• M3: 809,175 km (0.107 R)
• M4: 1,942,828 km (0.09 R)
• M5: 2,421,092 km (0.115 R)
• M6: 2,787,158 km (0.057 R)
• M7: 3,127,942 km (0.077 R)
• M8: 3,597,530 km (0.087 R)
• M9: 4,321,882 km (0.114 R)
• M10: 4,617,338 km (0.115 R)
• M11: 5,249,389 km (0.103 R)
• M12: 7,217,948 km (0.113 R)
• M13: 8,128,251 km (0.04 R)
• M14: 8,891,200 km (0.042 R)
• M15: 9,404,021 km (0.073 R)
• M16: 11,467,574 km (0.025 R)
• M17: 12,624,864 km (0.114 R)
• M18: 14,990,903 km (0.053 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 846.4

Radius: 14.2

Gravity: 4.2 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 3.45 AU - 4.17 AU

Year: 4802 Days

Day: 10.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 71,019,485 km

• M1: 266,434 km (0.117 R)
• M2: 910,303 km (0.045 R)
• M3: 1,532,929 km (0.092 R)
• M4: 2,198,939 km (0.038 R)
• M5: 5,253,728 km (0.09 R)
• M6: 5,714,040 km (0.067 R)
• M7: 6,232,846 km (0.118 R)
• M8: 6,951,065 km (0.117 R)
• M9: 9,275,666 km (0.079 R)
• M10: 10,796,628 km (0.073 R)
• M11: 12,227,681 km (0.117 R)
• M12: 15,232,654 km (0.071 R)
• M13: 16,355,535 km (0.095 R)
• M14: 17,532,721 km (0.056 R)
• M15: 23,040,615 km (0.112 R)
• M16: 25,160,716 km (0.109 R)
• M17: 29,695,776 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221.3

Radius: 12.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 3.76 AU - 4.12 AU

Year: 5050 Days

Day: 8.3 Hours

Environment

Temp: -212 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 71,019,485 km

• M1: 160,369 km (0.117 R)
• M2: 972,685 km (0.112 R)
• M3: 1,396,347 km (0.06 R)
• M4: 1,874,611 km (0.044 R)
• M5: 3,528,116 km (0.108 R)
• M6: 4,366,911 km (0.095 R)
• M7: 6,609,832 km (0.102 R)
• M8: 7,258,339 km (0.086 R)
• M9: 9,137,588 km (0.053 R)
• M10: 10,996,341 km (0.102 R)
• M11: 11,738,646 km (0.099 R)
• M12: 12,426,497 km (0.074 R)
• M13: 14,700,833 km (0.087 R)
• M14: 15,398,707 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 980

Radius: 6.4

Gravity: 23.93 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 6.89 AU - 9.45 AU

Year: 15078 Days

Day: 20 Hours

Environment

Temp: -231 °C

Axial Tilt: 22.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 71,019,485 km

• M1: 79,586 km (0.052 R)
• M2: 314,305 km (0.098 R)
• M3: 755,469 km (0.09 R)
• M4: 2,318,019 km (0.102 R)
• M5: 3,672,927 km (0.083 R)
• M6: 4,352,700 km (0.091 R)
• M7: 4,551,964 km (0.116 R)
• M8: 6,458,140 km (0.04 R)
• M9: 7,304,714 km (0.118 R)
• M10: 8,735,917 km (0.11 R)
• M11: 9,434,539 km (0.084 R)
• M12: 11,126,342 km (0.099 R)
• M13: 14,501,419 km (0.06 R)
• M14: 23,894,221 km (0.049 R)
• M15: 24,100,516 km (0.107 R)
• M16: 25,042,983 km (0.107 R)
• M17: 30,975,286 km (0.103 R)
• M18: 33,744,193 km (0.104 R)
• M19: 35,188,710 km (0.102 R)
• M20: 39,624,437 km (0.087 R)
• M21: 40,788,907 km (0.105 R)
• M22: 43,645,628 km (0.07 R)
• M23: 51,794,822 km (0.085 R)
• M24: 53,361,860 km (0.045 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 376 - 15,942 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit