🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.81

Radius: 0.92

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.43 AU - 0.63 AU

Year: 253 Days

Day: 28.7 Hours

Environment

Temp: -118 °C

Axial Tilt: 9.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.6

Radius: 9

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 0.8 AU - 0.84 AU

Year: 487 Days

Day: 14.6 Hours

Environment

Temp: -155 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 50,842,419 km

• M1: 111,899 km (0.103 R)
• M2: 424,858 km (0.099 R)
• M3: 1,451,249 km (0.066 R)
• M4: 2,113,220 km (0.077 R)
• M5: 2,422,738 km (0.079 R)
• M6: 3,013,350 km (0.069 R)
• M7: 3,640,015 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 827.2

Radius: 11.7

Gravity: 6.04 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.4 AU - 1.42 AU

Year: 1098 Days

Day: 13.5 Hours

Environment

Temp: -177 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 50,842,419 km

• M1: 145,858 km (0.074 R)
• M2: 607,966 km (0.111 R)
• M3: 1,573,321 km (0.085 R)
• M4: 1,955,843 km (0.116 R)
• M5: 2,401,195 km (0.046 R)
• M6: 2,900,852 km (0.087 R)
• M7: 3,638,220 km (0.099 R)
• M8: 4,336,094 km (0.093 R)
• M9: 4,849,365 km (0.107 R)
• M10: 5,653,004 km (0.049 R)
• M11: 7,071,491 km (0.059 R)
• M12: 8,295,800 km (0.11 R)
• M13: 9,031,074 km (0.083 R)
• M14: 10,310,285 km (0.045 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 893.4

Radius: 11.1

Gravity: 7.25 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 1.78 AU - 1.92 AU

Year: 1651 Days

Day: 13.5 Hours

Environment

Temp: -185 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 50,842,419 km

• M1: 147,653 km (0.105 R)
• M2: 530,923 km (0.117 R)
• M3: 1,071,869 km (0.069 R)
• M4: 1,496,128 km (0.039 R)
• M5: 1,987,109 km (0.106 R)
• M6: 2,722,831 km (0.1 R)
• M7: 3,330,049 km (0.097 R)
• M8: 3,736,356 km (0.061 R)
• M9: 4,213,873 km (0.111 R)
• M10: 4,629,007 km (0.073 R)
• M11: 5,823,995 km (0.097 R)
• M12: 6,239,877 km (0.111 R)
• M13: 7,186,532 km (0.069 R)
• M14: 7,665,694 km (0.05 R)
• M15: 9,429,752 km (0.086 R)
• M16: 9,867,326 km (0.116 R)
• M17: 10,424,578 km (0.098 R)
• M18: 11,299,576 km (0.071 R)
• M19: 11,870,741 km (0.115 R)
• M20: 12,865,716 km (0.083 R)
• M21: 13,829,276 km (0.12 R)
• M22: 14,394,906 km (0.108 R)
• M23: 14,750,649 km (0.101 R)

Asteroid Belt

Center: 3.48 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 5.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.1

Radius: 13

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 4.1 AU - 6.12 AU

Year: 7578 Days

Day: 13 Hours

Environment

Temp: -214 °C

Axial Tilt: 148.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 50,842,419 km

• M1: 164,258 km (0.039 R)
• M2: 885,919 km (0.048 R)
• M3: 1,478,775 km (0.115 R)
• M4: 1,907,971 km (0.118 R)
• M5: 2,570,989 km (0.058 R)
• M6: 3,218,149 km (0.1 R)
• M7: 4,163,309 km (0.103 R)
• M8: 6,707,819 km (0.113 R)
• M9: 9,015,815 km (0.056 R)
• M10: 12,831,309 km (0.1 R)
• M11: 13,470,989 km (0.102 R)
• M12: 15,806,810 km (0.06 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 59.2

Radius: 8.6

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 5.17 AU - 6.27 AU

Year: 8974 Days

Day: 8.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 50,842,419 km

• M1: 106,962 km (0.1 R)
• M2: 719,865 km (0.108 R)
• M3: 1,732,343 km (0.116 R)
• M4: 2,602,554 km (0.076 R)
• M5: 4,363,919 km (0.089 R)
• M6: 5,223,658 km (0.073 R)
• M7: 8,546,676 km (0.044 R)
• M8: 8,955,527 km (0.116 R)
• M9: 10,072,275 km (0.071 R)
• M10: 12,320,881 km (0.079 R)
• M11: 13,978,275 km (0.104 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 372.4

Radius: 7.6

Gravity: 6.45 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 7.37 AU - 8.61 AU

Year: 14816 Days

Day: 20.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 50,842,419 km

• M1: 96,939 km (0.075 R)
• M2: 470,784 km (0.108 R)
• M3: 936,034 km (0.117 R)
• M4: 1,220,569 km (0.116 R)
• M5: 2,054,128 km (0.074 R)
• M6: 2,644,292 km (0.059 R)
• M7: 2,968,022 km (0.08 R)
• M8: 3,222,039 km (0.06 R)
• M9: 3,617,725 km (0.104 R)
• M10: 4,243,044 km (0.096 R)
• M11: 5,229,942 km (0.036 R)
• M12: 9,006,689 km (0.12 R)
• M13: 11,056,031 km (0.072 R)
• M14: 12,905,060 km (0.068 R)
• M15: 15,771,356 km (0.099 R)
• M16: 16,765,733 km (0.069 R)
• M17: 17,204,354 km (0.038 R)
• M18: 19,036,030 km (0.043 R)
• M19: 19,917,610 km (0.063 R)
• M20: 22,547,989 km (0.089 R)
• M21: 23,900,205 km (0.058 R)
• M22: 24,831,302 km (0.038 R)
• M23: 25,305,677 km (0.068 R)
• M24: 27,364,742 km (0.118 R)
• M25: 28,383,503 km (0.105 R)
• M26: 37,709,734 km (0.099 R)
• M27: 47,420,730 km (0.086 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 247 - 19,783 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit