🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.42 AU - 0.62 AU

Year: 238 Days

Day: 26.6 Hours

Environment

Temp: -125 °C

Axial Tilt: 169.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 128.3

Radius: 10.5

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.7 AU - 0.78 AU

Year: 405 Days

Day: 6.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 47.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 34,583,864 km

• M1: 130,749 km (0.076 R)
• M2: 491,130 km (0.066 R)
• M3: 1,006,345 km (0.099 R)
• M4: 1,428,959 km (0.116 R)
• M5: 1,822,401 km (0.098 R)
• M6: 2,266,408 km (0.087 R)
• M7: 2,634,119 km (0.116 R)
• M8: 2,970,864 km (0.068 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 184.7

Radius: 13.1

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.05 AU - 1.43 AU

Year: 878 Days

Day: 9.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 34,583,864 km

• M1: 194,776 km (0.096 R)
• M2: 632,949 km (0.04 R)
• M3: 1,074,711 km (0.059 R)
• M4: 1,514,379 km (0.098 R)
• M5: 1,993,990 km (0.112 R)
• M6: 3,303,719 km (0.083 R)
• M7: 5,139,884 km (0.104 R)
• M8: 5,647,619 km (0.051 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 514.3

Radius: 9.2

Gravity: 6.08 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.07 AU - 1.49 AU

Year: 921 Days

Day: 10 Hours

Environment

Temp: -162 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 34,583,864 km

• M1: 115,490 km (0.074 R)
• M2: 409,898 km (0.035 R)
• M3: 841,189 km (0.107 R)
• M4: 1,158,785 km (0.064 R)
• M5: 1,933,702 km (0.111 R)
• M6: 2,544,809 km (0.103 R)
• M7: 2,883,798 km (0.048 R)
• M8: 3,319,726 km (0.098 R)
• M9: 3,799,038 km (0.111 R)
• M10: 4,604,024 km (0.052 R)
• M11: 4,913,991 km (0.067 R)
• M12: 5,672,452 km (0.11 R)
• M13: 6,009,047 km (0.117 R)
• M14: 6,422,087 km (0.116 R)
• M15: 6,722,330 km (0.09 R)
• M16: 7,259,087 km (0.101 R)
• M17: 7,969,976 km (0.112 R)
• M18: 8,883,271 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443

Radius: 10

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 1.33 AU - 1.95 AU

Year: 1335 Days

Day: 13.2 Hours

Environment

Temp: -174 °C

Axial Tilt: 106.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,583,864 km

• M1: 124,316 km (0.119 R)
• M2: 458,966 km (0.081 R)
• M3: 789,129 km (0.082 R)
• M4: 1,112,859 km (0.068 R)
• M5: 1,544,448 km (0.067 R)
• M6: 2,024,508 km (0.041 R)
• M7: 2,356,615 km (0.103 R)
• M8: 2,725,374 km (0.078 R)
• M9: 3,733,664 km (0.075 R)
• M10: 4,340,283 km (0.072 R)
• M11: 5,184,913 km (0.066 R)
• M12: 5,834,616 km (0.109 R)
• M13: 6,583,204 km (0.084 R)
• M14: 7,902,358 km (0.103 R)
• M15: 8,930,993 km (0.093 R)
• M16: 10,107,580 km (0.105 R)
• M17: 10,637,905 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 347.3

Radius: 9.6

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 2.87 AU - 3.91 AU

Year: 3969 Days

Day: 8.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,583,864 km

• M1: 124,017 km (0.045 R)
• M2: 609,611 km (0.112 R)
• M3: 954,734 km (0.089 R)
• M4: 1,355,506 km (0.088 R)
• M5: 1,751,043 km (0.046 R)
• M6: 2,103,795 km (0.058 R)
• M7: 2,955,156 km (0.12 R)
• M8: 3,350,843 km (0.118 R)
• M9: 5,729,150 km (0.034 R)
• M10: 9,127,864 km (0.092 R)
• M11: 10,122,390 km (0.032 R)
• M12: 11,269,507 km (0.097 R)
• M13: 13,447,203 km (0.034 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 95.5

Radius: 11.2

Gravity: 0.76 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 3.96 AU - 5.04 AU

Year: 6069 Days

Day: 13.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,583,864 km

• M1: 142,866 km (0.118 R)
• M2: 803,939 km (0.102 R)
• M3: 1,179,878 km (0.109 R)
• M4: 1,564,495 km (0.037 R)
• M5: 2,270,447 km (0.102 R)
• M6: 3,293,996 km (0.08 R)
• M7: 4,838,893 km (0.04 R)
• M8: 5,432,347 km (0.099 R)
• M9: 6,281,166 km (0.093 R)
• M10: 8,368,056 km (0.111 R)
• M11: 10,101,895 km (0.09 R)
• M12: 10,995,743 km (0.095 R)
• M13: 11,580,670 km (0.072 R)
• M14: 13,285,936 km (0.081 R)
• M15: 13,637,342 km (0.091 R)
• M16: 14,221,522 km (0.053 R)
• M17: 16,074,590 km (0.081 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 666.8

Radius: 14.2

Gravity: 3.31 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 4.09 AU - 5.05 AU

Year: 6212 Days

Day: 14.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 34,583,864 km

• M1: 176,525 km (0.099 R)
• M2: 774,319 km (0.072 R)
• M3: 1,336,059 km (0.109 R)
• M4: 2,034,980 km (0.119 R)
• M5: 2,855,375 km (0.097 R)
• M6: 3,547,564 km (0.074 R)
• M7: 4,477,464 km (0.096 R)
• M8: 5,415,892 km (0.054 R)
• M9: 6,415,355 km (0.071 R)
• M10: 8,180,012 km (0.12 R)
• M11: 10,340,803 km (0.117 R)
• M12: 13,616,697 km (0.111 R)
• M13: 16,068,906 km (0.062 R)
• M14: 18,058,707 km (0.105 R)
• M15: 19,286,756 km (0.078 R)
• M16: 22,445,515 km (0.057 R)
• M17: 23,544,311 km (0.118 R)
• M18: 25,259,451 km (0.077 R)
• M19: 25,764,493 km (0.092 R)
• M20: 27,056,570 km (0.104 R)
• M21: 27,763,121 km (0.094 R)
• M22: 28,572,745 km (0.115 R)
• M23: 32,858,724 km (0.071 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 550 - 11,156 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit