🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.63

Radius: 1.85

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.47 AU - 0.55 AU

Year: 232 Days

Day: 46.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 9.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,199,146 km

• M1: 426,653 km (0.092 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.56 AU - 0.62 AU

Year: 288 Days

Day: 21.2 Hours

Environment

Temp: -131 °C

Axial Tilt: 27.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 284.3

Radius: 13.3

Gravity: 1.61 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.72 AU - 0.9 AU

Year: 464 Days

Day: 8.5 Hours

Environment

Temp: -156 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 39,199,146 km

• M1: 165,455 km (0.078 R)
• M2: 598,391 km (0.082 R)
• M3: 1,019,958 km (0.117 R)
• M4: 1,551,779 km (0.095 R)
• M5: 1,967,960 km (0.057 R)
• M6: 3,024,420 km (0.096 R)
• M7: 3,584,215 km (0.051 R)
• M8: 4,088,510 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 404.4

Radius: 10.8

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 1.34 AU - 1.56 AU

Year: 1110 Days

Day: 11.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,199,146 km

• M1: 134,339 km (0.113 R)
• M2: 516,711 km (0.084 R)
• M3: 882,627 km (0.027 R)
• M4: 1,520,363 km (0.093 R)
• M5: 1,957,488 km (0.042 R)
• M6: 2,949,621 km (0.065 R)
• M7: 3,695,367 km (0.093 R)
• M8: 5,406,317 km (0.086 R)
• M9: 6,896,911 km (0.06 R)
• M10: 7,426,188 km (0.083 R)
• M11: 9,124,423 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 650.4

Radius: 11.6

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 1.49 AU - 2.03 AU

Year: 1485 Days

Day: 5.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 39,199,146 km

• M1: 144,212 km (0.061 R)
• M2: 743,651 km (0.057 R)
• M3: 1,183,020 km (0.108 R)
• M4: 1,580,053 km (0.108 R)
• M5: 1,960,181 km (0.109 R)
• M6: 2,341,655 km (0.1 R)
• M7: 3,198,103 km (0.107 R)
• M8: 3,798,739 km (0.112 R)
• M9: 4,606,268 km (0.101 R)
• M10: 5,268,538 km (0.093 R)
• M11: 5,655,847 km (0.043 R)
• M12: 6,225,665 km (0.095 R)
• M13: 7,190,721 km (0.097 R)
• M14: 7,943,198 km (0.094 R)
• M15: 8,310,012 km (0.047 R)
• M16: 9,199,970 km (0.119 R)
• M17: 11,204,581 km (0.081 R)
• M18: 12,440,559 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 325.3

Radius: 11.2

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 2.7 AU - 2.76 AU

Year: 2868 Days

Day: 10.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 39,199,146 km

• M1: 140,472 km (0.08 R)
• M2: 648,058 km (0.032 R)
• M3: 1,038,060 km (0.115 R)
• M4: 1,589,178 km (0.112 R)
• M5: 3,047,458 km (0.076 R)
• M6: 3,535,746 km (0.092 R)
• M7: 4,506,337 km (0.079 R)
• M8: 6,752,997 km (0.041 R)
• M9: 7,161,699 km (0.065 R)
• M10: 7,703,094 km (0.039 R)
• M11: 9,937,188 km (0.118 R)
• M12: 10,978,389 km (0.105 R)
• M13: 11,468,173 km (0.12 R)
• M14: 12,170,236 km (0.06 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 231.5

Radius: 4.3

Gravity: 12.52 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 7.29 AU - 7.45 AU

Year: 12721 Days

Day: 16.2 Hours

Environment

Temp: -226 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 39,199,146 km

• M1: 53,556 km (0.12 R)
• M2: 202,107 km (0.089 R)
• M3: 523,593 km (0.068 R)
• M4: 657,782 km (0.053 R)
• M5: 1,348,326 km (0.096 R)
• M6: 2,577,571 km (0.053 R)
• M7: 3,620,568 km (0.079 R)
• M8: 4,301,986 km (0.076 R)
• M9: 4,491,826 km (0.099 R)
• M10: 4,976,074 km (0.082 R)
• M11: 5,246,248 km (0.061 R)
• M12: 5,750,393 km (0.08 R)
• M13: 6,566,299 km (0.049 R)
• M14: 6,781,870 km (0.112 R)
• M15: 7,113,828 km (0.071 R)
• M16: 7,770,562 km (0.08 R)
• M17: 9,519,062 km (0.113 R)
• M18: 9,982,217 km (0.105 R)
• M19: 12,200,006 km (0.102 R)
• M20: 14,182,925 km (0.093 R)
• M21: 15,219,339 km (0.109 R)
• M22: 15,916,166 km (0.079 R)
• M23: 16,833,650 km (0.101 R)
• M24: 18,416,545 km (0.092 R)
• M25: 21,322,783 km (0.084 R)
• M26: 25,831,064 km (0.09 R)
• M27: 27,279,471 km (0.04 R)
• M28: 32,671,128 km (0.058 R)
• M29: 39,199,130 km (0.098 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 440 - 15,439 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit