🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.65

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.59 AU - 0.73 AU

Year: 201 Days

Day: 23 Hours

Environment

Temp: 138 °C

Axial Tilt: 27.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 51,580,659 km

• M1: 113,395 km (0.114 R)
• M2: 457,470 km (0.095 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.71

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.64 AU - 0.74 AU

Year: 215 Days

Day: 17.4 Hours

Environment

Temp: 108 °C

Axial Tilt: 0.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 51,580,659 km

• M1: 97,837 km (0.079 R)
• M2: 122,521 km (0.04 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.77 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.63 AU - 0.91 AU

Year: 253 Days

Day: 40 Hours

Environment

Temp: 81 °C

Axial Tilt: 3.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 2.84 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.96

Radius: 0.98

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 2.34 AU - 3.34 AU

Year: 1794 Days

Day: 19.9 Hours

Environment

Temp: -114 °C

Axial Tilt: 39.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,580,659 km

• M1: 260,899 km (0.071 R)

Asteroid Belt

Center: 4.24 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 5.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 479.9

Radius: 11.8

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 4.81 AU - 6.45 AU

Year: 5006 Days

Day: 5.1 Hours

Environment

Temp: -148 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 51,580,659 km

• M1: 146,756 km (0.066 R)
• M2: 589,416 km (0.07 R)
• M3: 1,123,630 km (0.052 R)
• M4: 2,239,630 km (0.097 R)
• M5: 2,694,407 km (0.044 R)
• M6: 3,687,588 km (0.102 R)
• M7: 5,142,277 km (0.084 R)
• M8: 6,539,372 km (0.077 R)
• M9: 7,144,196 km (0.101 R)
• M10: 8,764,042 km (0.113 R)
• M11: 10,445,671 km (0.025 R)
• M12: 11,543,570 km (0.045 R)
• M13: 12,144,056 km (0.112 R)
• M14: 12,862,874 km (0.081 R)
• M15: 13,813,568 km (0.09 R)
• M16: 17,303,387 km (0.109 R)
• M17: 23,105,092 km (0.096 R)
• M18: 26,520,860 km (0.05 R)

Planet 6 - Gas Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 208.1

Radius: 14.6

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 5.91 AU - 7.03 AU

Year: 6167 Days

Day: 6.7 Hours

Environment

Temp: -151 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 51,580,659 km

• M1: 181,612 km (0.088 R)
• M2: 734,974 km (0.116 R)
• M3: 1,317,359 km (0.087 R)
• M4: 1,922,482 km (0.053 R)
• M5: 3,514,503 km (0.089 R)
• M6: 4,539,547 km (0.052 R)
• M7: 5,465,409 km (0.081 R)
• M8: 6,140,843 km (0.117 R)
• M9: 7,179,950 km (0.103 R)
• M10: 7,758,295 km (0.08 R)
• M11: 10,430,861 km (0.044 R)
• M12: 12,086,461 km (0.051 R)
• M13: 15,488,316 km (0.096 R)
• M14: 15,967,628 km (0.12 R)
• M15: 17,695,483 km (0.117 R)
• M16: 23,069,338 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 662.9

Radius: 14.6

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 8.75 AU - 9.19 AU

Year: 10067 Days

Day: 8.4 Hours

Environment

Temp: -164 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 51,580,659 km

• M1: 181,612 km (0.061 R)
• M2: 887,863 km (0.065 R)
• M3: 1,721,722 km (0.117 R)
• M4: 3,572,547 km (0.106 R)
• M5: 4,680,020 km (0.055 R)
• M6: 6,147,575 km (0.118 R)
• M7: 7,244,726 km (0.048 R)
• M8: 9,975,036 km (0.087 R)
• M9: 11,764,377 km (0.088 R)
• M10: 12,735,416 km (0.115 R)
• M11: 15,364,001 km (0.12 R)
• M12: 16,246,179 km (0.09 R)
• M13: 17,233,824 km (0.111 R)
• M14: 17,963,413 km (0.116 R)
• M15: 19,173,660 km (0.115 R)
• M16: 22,609,175 km (0.046 R)
• M17: 32,955,513 km (0.089 R)
• M18: 36,287,955 km (0.115 R)
• M19: 37,245,382 km (0.098 R)
• M20: 38,961,419 km (0.07 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 662.5

Radius: 3.8

Gravity: 45.88 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 14.05 AU - 17.25 AU

Year: 23201 Days

Day: 15.5 Hours

Environment

Temp: -191 °C

Axial Tilt: 2.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 51,580,659 km

• M1: 47,273 km (0.084 R)
• M2: 321,935 km (0.065 R)
• M3: 531,521 km (0.094 R)
• M4: 672,442 km (0.119 R)
• M5: 872,455 km (0.09 R)
• M6: 3,856,783 km (0.046 R)
• M7: 4,390,698 km (0.08 R)
• M8: 11,924,745 km (0.095 R)
• M9: 12,061,478 km (0.119 R)
• M10: 14,317,863 km (0.107 R)
• M11: 16,669,392 km (0.102 R)
• M12: 25,695,529 km (0.102 R)
• M13: 43,358,998 km (0.105 R)
• M14: 53,597,177 km (0.054 R)
• M15: 58,381,467 km (0.105 R)
• M16: 65,333,728 km (0.117 R)
• M17: 67,695,879 km (0.05 R)
• M18: 77,952,458 km (0.11 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 104.4

Radius: 7.1

Gravity: 2.07 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 13.51 AU - 22.47 AU

Year: 28594 Days

Day: 22.8 Hours

Environment

Temp: -204 °C

Axial Tilt: 5.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 51,580,659 km

• M1: 204,051 km (0.103 R)
• M2: 494,122 km (0.085 R)
• M3: 1,839,605 km (0.049 R)
• M4: 2,239,779 km (0.078 R)
• M5: 2,891,577 km (0.057 R)
• M6: 4,268,626 km (0.078 R)
• M7: 6,035,676 km (0.085 R)
• M8: 12,242,043 km (0.117 R)
• M9: 18,752,542 km (0.113 R)
• M10: 19,227,814 km (0.041 R)
• M11: 30,717,080 km (0.071 R)
• M12: 31,266,703 km (0.058 R)
• M13: 34,702,517 km (0.118 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 541 - 14,457 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit