🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.9

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.5 AU - 0.76 AU

Year: 323 Days

Day: 29 Hours

Environment

Temp: -127 °C

Axial Tilt: 33.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 148

Radius: 11.5

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.71 AU - 0.73 AU

Year: 394 Days

Day: 14.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 24,774,723 km

• M1: 144,661 km (0.041 R)
• M2: 778,358 km (0.103 R)
• M3: 1,565,542 km (0.064 R)
• M4: 2,635,166 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 451.4

Radius: 9.7

Gravity: 4.8 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.69 AU - 0.91 AU

Year: 462 Days

Day: 14.1 Hours

Environment

Temp: -149 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 24,774,723 km

• M1: 120,725 km (0.037 R)
• M2: 434,432 km (0.077 R)
• M3: 846,126 km (0.105 R)
• M4: 1,692,550 km (0.096 R)
• M5: 2,031,539 km (0.066 R)
• M6: 2,650,575 km (0.091 R)
• M7: 3,310,750 km (0.102 R)
• M8: 5,031,724 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 870.2

Radius: 14.9

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.9 AU - 1.08 AU

Year: 636 Days

Day: 10.3 Hours

Environment

Temp: -168 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 24,774,723 km

• M1: 185,352 km (0.119 R)
• M2: 722,408 km (0.051 R)
• M3: 1,402,779 km (0.103 R)
• M4: 2,112,472 km (0.111 R)
• M5: 2,727,917 km (0.109 R)
• M6: 3,396,021 km (0.101 R)
• M7: 4,141,916 km (0.056 R)
• M8: 4,627,511 km (0.057 R)
• M9: 5,328,676 km (0.094 R)
• M10: 5,943,673 km (0.102 R)
• M11: 7,031,100 km (0.074 R)
• M12: 7,749,469 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 897.2

Radius: 9.4

Gravity: 10.15 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.96 AU - 1.02 AU

Year: 636 Days

Day: 7.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 24,774,723 km

• M1: 117,434 km (0.117 R)
• M2: 632,500 km (0.085 R)
• M3: 939,923 km (0.059 R)
• M4: 1,302,399 km (0.066 R)
• M5: 1,666,969 km (0.061 R)
• M6: 2,453,555 km (0.111 R)
• M7: 2,788,504 km (0.078 R)
• M8: 3,348,599 km (0.032 R)
• M9: 4,057,094 km (0.077 R)
• M10: 5,000,458 km (0.059 R)
• M11: 5,925,422 km (0.115 R)
• M12: 6,387,380 km (0.113 R)
• M13: 7,406,591 km (0.117 R)
• M14: 7,730,171 km (0.087 R)
• M15: 8,063,176 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.6

Radius: 10.3

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 4.05 AU - 4.37 AU

Year: 5577 Days

Day: 11.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 24,774,723 km

• M1: 128,056 km (0.087 R)
• M2: 1,390,512 km (0.037 R)
• M3: 1,881,193 km (0.091 R)
• M4: 3,468,576 km (0.067 R)
• M5: 4,586,970 km (0.111 R)
• M6: 6,530,396 km (0.085 R)
• M7: 7,343,909 km (0.064 R)
• M8: 9,104,078 km (0.074 R)
• M9: 9,654,747 km (0.088 R)
• M10: 14,939,741 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 147.6

Radius: 5.4

Gravity: 5.06 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 5.8 AU - 6.28 AU

Year: 9585 Days

Day: 24.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 24,774,723 km

• M1: 73,752 km (0.089 R)
• M2: 1,707,510 km (0.11 R)
• M3: 2,360,954 km (0.108 R)
• M4: 2,869,138 km (0.1 R)
• M5: 3,720,499 km (0.09 R)
• M6: 4,831,263 km (0.087 R)
• M7: 9,103,030 km (0.037 R)
• M8: 18,354,911 km (0.113 R)
• M9: 18,544,900 km (0.116 R)
• M10: 23,584,852 km (0.082 R)
• M11: 27,025,304 km (0.029 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 80

Radius: 6.8

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 5.74 AU - 7.4 AU

Year: 10873 Days

Day: 16.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 24,774,723 km

• M1: 92,302 km (0.077 R)
• M2: 313,258 km (0.049 R)
• M3: 1,736,981 km (0.099 R)
• M4: 1,979,928 km (0.085 R)
• M5: 2,334,475 km (0.032 R)
• M6: 6,083,547 km (0.105 R)
• M7: 8,337,389 km (0.077 R)
• M8: 8,736,067 km (0.047 R)
• M9: 11,577,379 km (0.082 R)
• M10: 14,202,074 km (0.073 R)
• M11: 14,928,521 km (0.095 R)
• M12: 17,549,027 km (0.085 R)
• M13: 18,264,254 km (0.104 R)
• M14: 20,201,696 km (0.029 R)
• M15: 21,119,928 km (0.106 R)
• M16: 21,860,587 km (0.074 R)
• M17: 23,896,465 km (0.058 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 397 - 13,419 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit