🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.47 AU - 0.73 AU

Year: 300 Days

Day: 35.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 10.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 78,334,983 km

• M1: 21,991 km (0.084 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.28

Radius: 0.6

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.52 AU - 0.78 AU

Year: 338 Days

Day: 36 Hours

Environment

Temp: -135 °C

Axial Tilt: 44.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 18.3

Radius: 8.5

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1 AU - 1.06 AU

Year: 675 Days

Day: 10 Hours

Environment

Temp: -150 °C

Axial Tilt: 125.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 78,334,983 km

• M1: 107,112 km (0.094 R)
• M2: 463,155 km (0.101 R)
• M3: 746,493 km (0.118 R)
• M4: 1,129,763 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313.8

Radius: 8

Gravity: 4.9 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 1.65 AU - 2.13 AU

Year: 1678 Days

Day: 6.2 Hours

Environment

Temp: -197 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,334,983 km

• M1: 102,774 km (0.108 R)
• M2: 357,389 km (0.081 R)
• M3: 610,659 km (0.086 R)
• M4: 948,600 km (0.093 R)
• M5: 1,331,571 km (0.051 R)
• M6: 3,102,809 km (0.092 R)
• M7: 3,556,241 km (0.11 R)
• M8: 3,887,899 km (0.089 R)
• M9: 5,165,614 km (0.11 R)
• M10: 5,697,136 km (0.119 R)
• M11: 7,953,072 km (0.079 R)
• M12: 8,916,482 km (0.071 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32.5

Radius: 12.4

Gravity: 0.21 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 2.39 AU - 2.75 AU

Year: 2660 Days

Day: 14.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 61 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 78,334,983 km

• M1: 154,235 km (0.073 R)
• M2: 704,905 km (0.11 R)
• M3: 1,329,027 km (0.116 R)
• M4: 3,410,831 km (0.045 R)
• M5: 4,621,377 km (0.095 R)
• M6: 6,137,851 km (0.096 R)
• M7: 7,135,519 km (0.059 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 410.7

Radius: 11

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 4.01 AU - 6.33 AU

Year: 7590 Days

Day: 9.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 78,334,983 km

• M1: 136,732 km (0.105 R)
• M2: 594,053 km (0.114 R)
• M3: 953,686 km (0.077 R)
• M4: 1,329,626 km (0.078 R)
• M5: 3,958,060 km (0.119 R)
• M6: 4,983,554 km (0.078 R)
• M7: 7,371,585 km (0.113 R)
• M8: 7,814,544 km (0.094 R)
• M9: 13,599,942 km (0.119 R)
• M10: 15,547,707 km (0.108 R)
• M11: 17,286,034 km (0.113 R)
• M12: 18,135,750 km (0.101 R)
• M13: 19,219,437 km (0.095 R)
• M14: 21,590,264 km (0.109 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 200.4

Radius: 7.3

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 5.53 AU - 7.25 AU

Year: 10430 Days

Day: 16.4 Hours

Environment

Temp: -232 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 78,334,983 km

• M1: 96,191 km (0.106 R)
• M2: 784,342 km (0.052 R)
• M3: 1,339,799 km (0.079 R)
• M4: 1,811,780 km (0.107 R)
• M5: 2,613,624 km (0.092 R)
• M6: 3,610,395 km (0.112 R)
• M7: 4,759,307 km (0.111 R)
• M8: 12,170,236 km (0.102 R)
• M9: 12,424,402 km (0.114 R)
• M10: 12,890,699 km (0.103 R)
• M11: 13,639,287 km (0.073 R)
• M12: 18,415,498 km (0.091 R)
• M13: 20,920,514 km (0.114 R)
• M14: 24,521,185 km (0.083 R)
• M15: 28,604,010 km (0.075 R)
• M16: 29,967,445 km (0.05 R)
• M17: 31,755,738 km (0.095 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 577.3

Radius: 4.9

Gravity: 24.04 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 10.38 AU - 11.12 AU

Year: 22758 Days

Day: 16.1 Hours

Environment

Temp: -224 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 78,334,983 km

• M1: 60,886 km (0.062 R)
• M2: 346,768 km (0.067 R)
• M3: 589,416 km (0.056 R)
• M4: 775,515 km (0.085 R)
• M5: 976,575 km (0.088 R)
• M6: 1,226,254 km (0.104 R)
• M7: 1,405,173 km (0.099 R)
• M8: 2,029,894 km (0.055 R)
• M9: 2,415,407 km (0.06 R)
• M10: 2,649,977 km (0.099 R)
• M11: 2,823,061 km (0.115 R)
• M12: 6,154,905 km (0.115 R)
• M13: 6,459,636 km (0.09 R)
• M14: 8,880,728 km (0.051 R)
• M15: 11,322,764 km (0.092 R)
• M16: 11,846,506 km (0.115 R)
• M17: 13,370,010 km (0.082 R)
• M18: 14,329,082 km (0.058 R)
• M19: 14,633,215 km (0.068 R)
• M20: 20,967,189 km (0.108 R)
• M21: 22,666,920 km (0.083 R)
• M22: 25,330,061 km (0.115 R)
• M23: 28,076,080 km (0.041 R)
• M24: 31,014,182 km (0.116 R)
• M25: 31,779,524 km (0.086 R)
• M26: 33,480,602 km (0.087 R)
• M27: 36,214,952 km (0.12 R)
• M28: 40,893,326 km (0.099 R)
• M29: 47,623,734 km (0.085 R)
• M30: 49,501,038 km (0.06 R)
• M31: 50,545,530 km (0.068 R)
• M32: 51,782,555 km (0.101 R)
• M33: 58,078,980 km (0.113 R)
• M34: 60,220,473 km (0.116 R)
• M35: 60,615,412 km (0.109 R)
• M36: 66,959,409 km (0.057 R)
• M37: 67,595,947 km (0.06 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: 439 - 12,755 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit