🌌 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: 1.09

Radius: 1.04

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.63 AU - 0.63 AU

Year: 323 Days

Day: 14.7 Hours

Environment

Temp: -141 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 91.6

Radius: 14.8

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.58 AU - 0.82 AU

Year: 378 Days

Day: 10.9 Hours

Environment

Temp: -143 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 39,103,967 km

• M1: 184,903 km (0.11 R)
• M2: 760,556 km (0.12 R)
• M3: 1,254,079 km (0.093 R)
• M4: 2,132,817 km (0.095 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 980.4

Radius: 12.6

Gravity: 6.18 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.91 AU - 0.91 AU

Year: 561 Days

Day: 6.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 46.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 39,103,967 km

• M1: 156,629 km (0.109 R)
• M2: 602,730 km (0.11 R)
• M3: 1,046,886 km (0.119 R)
• M4: 1,489,546 km (0.079 R)
• M5: 1,925,474 km (0.09 R)
• M6: 2,325,948 km (0.067 R)
• M7: 2,793,890 km (0.05 R)
• M8: 3,738,600 km (0.075 R)
• M9: 4,142,066 km (0.065 R)
• M10: 5,531,980 km (0.102 R)
• M11: 6,000,520 km (0.055 R)
• M12: 7,212,413 km (0.057 R)
• M13: 7,726,880 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 922.5

Radius: 8.3

Gravity: 13.39 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.23 AU - 1.61 AU

Year: 1093 Days

Day: 6.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 135.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 39,103,967 km

• M1: 103,372 km (0.102 R)
• M2: 369,357 km (0.105 R)
• M3: 696,079 km (0.117 R)
• M4: 972,985 km (0.109 R)
• M5: 1,278,314 km (0.054 R)
• M6: 1,566,738 km (0.101 R)
• M7: 1,970,952 km (0.062 R)
• M8: 2,492,151 km (0.099 R)
• M9: 2,961,739 km (0.118 R)
• M10: 3,520,187 km (0.106 R)
• M11: 4,414,184 km (0.111 R)
• M12: 4,826,925 km (0.116 R)
• M13: 5,905,226 km (0.055 R)
• M14: 6,620,155 km (0.099 R)
• M15: 6,961,387 km (0.11 R)
• M16: 8,964,054 km (0.071 R)
• M17: 9,382,180 km (0.043 R)
• M18: 11,117,815 km (0.11 R)
• M19: 11,392,027 km (0.11 R)
• M20: 11,989,671 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488.5

Radius: 13

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 1.29 AU - 1.63 AU

Year: 1139 Days

Day: 13.1 Hours

Environment

Temp: -179 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 39,103,967 km

• M1: 163,062 km (0.119 R)
• M2: 809,773 km (0.097 R)
• M3: 1,222,813 km (0.098 R)
• M4: 2,004,911 km (0.09 R)
• M5: 2,420,194 km (0.113 R)
• M6: 3,047,159 km (0.116 R)
• M7: 3,631,040 km (0.119 R)
• M8: 4,061,133 km (0.062 R)
• M9: 5,326,731 km (0.108 R)
• M10: 5,741,566 km (0.09 R)
• M11: 6,863,102 km (0.106 R)
• M12: 7,746,627 km (0.038 R)
• M13: 8,307,020 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.5

Radius: 13

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 2.74 AU - 3.18 AU

Year: 3288 Days

Day: 12.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 39,103,967 km

• M1: 162,762 km (0.053 R)
• M2: 742,753 km (0.09 R)
• M3: 1,431,203 km (0.061 R)
• M4: 2,541,518 km (0.118 R)
• M5: 3,301,176 km (0.117 R)
• M6: 3,854,688 km (0.065 R)
• M7: 5,184,763 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 325.1

Radius: 4

Gravity: 20.32 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 6.52 AU - 7.04 AU

Year: 11399 Days

Day: 22.2 Hours

Environment

Temp: -227 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 39,103,967 km

• M1: 62,532 km (0.032 R)
• M2: 1,194,539 km (0.073 R)
• M3: 3,497,299 km (0.09 R)
• M4: 4,199,960 km (0.105 R)
• M5: 4,814,508 km (0.111 R)
• M6: 8,547,125 km (0.103 R)
• M7: 9,253,675 km (0.11 R)
• M8: 12,693,828 km (0.091 R)
• M9: 15,007,210 km (0.115 R)
• M10: 15,196,002 km (0.102 R)
• M11: 16,967,241 km (0.086 R)
• M12: 24,810,807 km (0.054 R)
• M13: 29,361,574 km (0.118 R)
• M14: 33,251,418 km (0.12 R)
• M15: 40,069,790 km (0.101 R)
• M16: 40,798,930 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 82.6

Radius: 4.1

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 9.76 AU - 10.76 AU

Year: 21220 Days

Day: 21.1 Hours

Environment

Temp: -223 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 39,103,967 km

• M1: 51,162 km (0.074 R)
• M2: 428,448 km (0.039 R)
• M3: 564,283 km (0.118 R)
• M4: 955,033 km (0.105 R)
• M5: 2,332,081 km (0.073 R)
• M6: 2,683,935 km (0.115 R)
• M7: 4,262,791 km (0.108 R)
• M8: 5,110,413 km (0.079 R)
• M9: 6,303,456 km (0.113 R)
• M10: 7,094,679 km (0.119 R)
• M11: 7,398,063 km (0.077 R)
• M12: 7,829,504 km (0.026 R)
• M13: 8,071,703 km (0.063 R)
• M14: 9,956,187 km (0.075 R)
• M15: 10,240,573 km (0.11 R)
• M16: 12,493,666 km (0.119 R)
• M17: 15,180,893 km (0.102 R)
• M18: 18,798,319 km (0.096 R)
• M19: 21,741,507 km (0.12 R)
• M20: 22,381,038 km (0.118 R)
• M21: 31,565,001 km (0.062 R)
• M22: 33,958,717 km (0.11 R)
• M23: 34,172,492 km (0.101 R)
• M24: 35,693,603 km (0.059 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: 547 - 15,470 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit