🌌 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: 1.97

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.41 AU - 0.65 AU

Year: 253 Days

Day: 29.5 Hours

Environment

Temp: -118 °C

Axial Tilt: 2.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.76

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.5 AU - 0.58 AU

Year: 260 Days

Day: 23.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 31.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 70,617,888 km

• M1: 107,561 km (0.073 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.17

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.55 AU - 0.75 AU

Year: 344 Days

Day: 13.1 Hours

Environment

Temp: -129 °C

Axial Tilt: 32.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.66 AU - 0.66 AU

Year: 352 Days

Day: 13 Hours

Environment

Temp: -136 °C

Axial Tilt: 21.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 391.8

Radius: 11.9

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.84 AU - 1.18 AU

Year: 666 Days

Day: 8.7 Hours

Environment

Temp: -169 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 70,617,888 km

• M1: 147,952 km (0.11 R)
• M2: 518,207 km (0.05 R)
• M3: 918,232 km (0.064 R)
• M4: 1,356,254 km (0.096 R)
• M5: 1,951,504 km (0.118 R)
• M6: 2,367,536 km (0.062 R)
• M7: 2,843,257 km (0.116 R)
• M8: 3,394,525 km (0.111 R)
• M9: 3,934,574 km (0.112 R)
• M10: 4,311,560 km (0.068 R)
• M11: 4,962,311 km (0.107 R)
• M12: 6,328,140 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.4

Radius: 11.9

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.27 AU - 1.57 AU

Year: 1110 Days

Day: 5.9 Hours

Environment

Temp: -178 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 70,617,888 km

• M1: 147,952 km (0.066 R)
• M2: 713,582 km (0.105 R)
• M3: 1,105,528 km (0.09 R)
• M4: 1,807,591 km (0.089 R)
• M5: 2,927,780 km (0.057 R)
• M6: 3,347,103 km (0.112 R)
• M7: 4,511,722 km (0.098 R)
• M8: 5,178,480 km (0.091 R)
• M9: 5,702,222 km (0.076 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280.7

Radius: 13.1

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 2.97 AU - 4.23 AU

Year: 4481 Days

Day: 8.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 70,617,888 km

• M1: 162,912 km (0.116 R)
• M2: 834,307 km (0.112 R)
• M3: 1,352,514 km (0.089 R)
• M4: 2,748,562 km (0.104 R)
• M5: 3,474,560 km (0.115 R)
• M6: 4,858,041 km (0.115 R)
• M7: 6,782,319 km (0.069 R)
• M8: 7,980,448 km (0.092 R)
• M9: 14,893,066 km (0.117 R)
• M10: 15,545,762 km (0.057 R)
• M11: 17,841,640 km (0.069 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 264.2

Radius: 3.7

Gravity: 19.3 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 6.09 AU - 6.23 AU

Year: 10030 Days

Day: 16.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 117.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 70,617,888 km

• M1: 50,714 km (0.077 R)
• M2: 388,206 km (0.066 R)
• M3: 652,546 km (0.038 R)
• M4: 828,922 km (0.03 R)
• M5: 1,017,266 km (0.115 R)
• M6: 1,394,252 km (0.111 R)
• M7: 2,783,418 km (0.111 R)
• M8: 6,276,528 km (0.097 R)
• M9: 6,752,997 km (0.113 R)
• M10: 9,947,361 km (0.099 R)
• M11: 10,927,376 km (0.074 R)
• M12: 12,807,822 km (0.091 R)
• M13: 17,259,854 km (0.074 R)
• M14: 24,328,653 km (0.098 R)
• M15: 34,959,676 km (0.051 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 754.6

Radius: 7

Gravity: 15.4 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 6.74 AU - 10.8 AU

Year: 17038 Days

Day: 21.1 Hours

Environment

Temp: -232 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 70,617,888 km

• M1: 92,601 km (0.069 R)
• M2: 329,863 km (0.097 R)
• M3: 730,935 km (0.077 R)
• M4: 990,787 km (0.082 R)
• M5: 1,506,451 km (0.056 R)
• M6: 2,786,410 km (0.112 R)
• M7: 3,806,518 km (0.078 R)
• M8: 4,400,870 km (0.111 R)
• M9: 4,703,357 km (0.067 R)
• M10: 6,643,641 km (0.045 R)
• M11: 8,133,487 km (0.105 R)
• M12: 11,316,929 km (0.107 R)
• M13: 12,209,879 km (0.065 R)
• M14: 13,011,873 km (0.091 R)
• M15: 13,565,685 km (0.033 R)
• M16: 15,019,028 km (0.113 R)
• M17: 15,245,669 km (0.107 R)
• M18: 18,146,371 km (0.094 R)
• M19: 19,725,975 km (0.095 R)
• M20: 21,586,374 km (0.104 R)
• M21: 22,166,515 km (0.105 R)
• M22: 23,357,912 km (0.118 R)
• M23: 27,978,243 km (0.085 R)
• M24: 32,286,661 km (0.085 R)
• M25: 34,729,594 km (0.074 R)
• M26: 35,659,794 km (0.114 R)
• M27: 40,124,842 km (0.045 R)
• M28: 42,944,762 km (0.099 R)
• M29: 45,577,534 km (0.064 R)
• M30: 47,988,155 km (0.088 R)
• M31: 65,258,331 km (0.054 R)
• M32: 68,315,812 km (0.033 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 370 - 19,420 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit