🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.65

Radius: 1.48

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.42 AU - 0.68 AU

Year: 268 Days

Day: 38.3 Hours

Environment

Temp: -118 °C

Axial Tilt: 45.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 35,369,299 km

• M1: 102,475 km (0.067 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.9

Radius: 0.96

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.56 AU - 0.74 AU

Year: 344 Days

Day: 33.5 Hours

Environment

Temp: -132 °C

Axial Tilt: 6.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 35,369,299 km

• M1: 27,526 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 687

Radius: 14.7

Gravity: 3.18 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.58 AU - 0.84 AU

Year: 392 Days

Day: 9.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 35,369,299 km

• M1: 182,809 km (0.073 R)
• M2: 721,511 km (0.116 R)
• M3: 1,317,209 km (0.108 R)
• M4: 2,020,618 km (0.11 R)
• M5: 2,629,033 km (0.094 R)
• M6: 3,438,657 km (0.066 R)
• M7: 3,947,439 km (0.114 R)
• M8: 4,451,135 km (0.075 R)
• M9: 5,118,641 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 344.5

Radius: 14.6

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 1.53 AU - 1.95 AU

Year: 1506 Days

Day: 11.5 Hours

Environment

Temp: -181 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,369,299 km

• M1: 181,612 km (0.074 R)
• M2: 772,823 km (0.1 R)
• M3: 1,421,778 km (0.096 R)
• M4: 2,145,832 km (0.07 R)
• M5: 2,897,412 km (0.056 R)
• M6: 3,472,765 km (0.039 R)
• M7: 4,026,127 km (0.054 R)
• M8: 5,099,791 km (0.101 R)
• M9: 6,072,776 km (0.111 R)
• M10: 7,811,253 km (0.12 R)
• M11: 9,189,648 km (0.106 R)
• M12: 10,567,145 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463.6

Radius: 13.4

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 1.91 AU - 2.43 AU

Year: 2097 Days

Day: 6.8 Hours

Environment

Temp: -198 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 35,369,299 km

• M1: 166,802 km (0.119 R)
• M2: 723,754 km (0.061 R)
• M3: 1,318,256 km (0.096 R)
• M4: 1,811,331 km (0.093 R)
• M5: 3,047,159 km (0.054 R)
• M6: 3,533,352 km (0.061 R)
• M7: 4,034,954 km (0.055 R)
• M8: 4,908,157 km (0.079 R)
• M9: 5,379,240 km (0.066 R)
• M10: 6,166,873 km (0.083 R)
• M11: 6,665,184 km (0.096 R)
• M12: 7,972,220 km (0.114 R)
• M13: 9,443,814 km (0.033 R)
• M14: 13,406,512 km (0.052 R)
• M15: 13,948,206 km (0.079 R)
• M16: 14,591,477 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 863.8

Radius: 9

Gravity: 10.66 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 2.99 AU - 3.49 AU

Year: 3826 Days

Day: 9.5 Hours

Environment

Temp: -213 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 35,369,299 km

• M1: 112,946 km (0.073 R)
• M2: 689,646 km (0.105 R)
• M3: 1,189,602 km (0.096 R)
• M4: 1,890,917 km (0.086 R)
• M5: 2,988,217 km (0.099 R)
• M6: 4,135,484 km (0.066 R)
• M7: 4,609,260 km (0.034 R)
• M8: 4,910,700 km (0.094 R)
• M9: 7,170,226 km (0.1 R)
• M10: 8,250,023 km (0.082 R)
• M11: 10,426,672 km (0.049 R)
• M12: 13,159,377 km (0.1 R)
• M13: 14,663,434 km (0.103 R)
• M14: 15,373,575 km (0.05 R)
• M15: 16,862,522 km (0.111 R)
• M16: 19,991,811 km (0.114 R)
• M17: 20,391,686 km (0.043 R)
• M18: 21,903,522 km (0.119 R)
• M19: 23,488,511 km (0.03 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 432

Radius: 11.3

Gravity: 3.38 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 4.26 AU - 6.32 AU

Year: 7982 Days

Day: 8.5 Hours

Environment

Temp: -216 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 35,369,299 km

• M1: 142,118 km (0.12 R)
• M2: 645,964 km (0.091 R)
• M3: 1,349,822 km (0.109 R)
• M4: 1,954,047 km (0.089 R)
• M5: 2,731,956 km (0.096 R)
• M6: 3,308,207 km (0.107 R)
• M7: 7,049,650 km (0.058 R)
• M8: 8,618,034 km (0.034 R)
• M9: 9,726,255 km (0.101 R)
• M10: 10,879,056 km (0.033 R)
• M11: 13,901,532 km (0.105 R)
• M12: 15,789,008 km (0.119 R)
• M13: 23,258,879 km (0.106 R)
• M14: 25,907,958 km (0.063 R)
• M15: 28,936,567 km (0.106 R)
• M16: 30,440,324 km (0.098 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: 188 - 20,160 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit