🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.33

Radius: 1.4

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.4 AU - 0.64 AU

Year: 238 Days

Day: 44.2 Hours

Environment

Temp: -121 °C

Axial Tilt: 20.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 484.7

Radius: 9

Gravity: 5.98 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.78 AU - 1.1 AU

Year: 579 Days

Day: 11.1 Hours

Environment

Temp: -154 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 21,023,988 km

• M1: 112,049 km (0.06 R)
• M2: 484,697 km (0.095 R)
• M3: 806,931 km (0.113 R)
• M4: 1,312,871 km (0.084 R)
• M5: 1,926,821 km (0.112 R)
• M6: 2,230,654 km (0.087 R)
• M7: 2,816,479 km (0.109 R)
• M8: 4,365,266 km (0.072 R)
• M9: 4,816,303 km (0.09 R)
• M10: 5,954,294 km (0.065 R)
• M11: 6,265,009 km (0.069 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 534.9

Radius: 11.4

Gravity: 4.12 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.88 AU - 1.22 AU

Year: 684 Days

Day: 10 Hours

Environment

Temp: -152 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 21,023,988 km

• M1: 141,819 km (0.059 R)
• M2: 529,726 km (0.114 R)
• M3: 1,636,601 km (0.073 R)
• M4: 2,112,172 km (0.081 R)
• M5: 2,958,747 km (0.111 R)
• M6: 3,919,315 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407.5

Radius: 11.9

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.94 AU - 1.54 AU

Year: 878 Days

Day: 11.8 Hours

Environment

Temp: -161 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 21,023,988 km

• M1: 148,102 km (0.107 R)
• M2: 618,737 km (0.086 R)
• M3: 1,148,463 km (0.069 R)
• M4: 1,728,753 km (0.083 R)
• M5: 2,446,224 km (0.109 R)
• M6: 3,225,928 km (0.118 R)
• M7: 3,971,973 km (0.055 R)
• M8: 4,649,053 km (0.093 R)
• M9: 5,583,591 km (0.119 R)
• M10: 6,353,422 km (0.11 R)
• M11: 7,236,797 km (0.038 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 84.7

Radius: 11.3

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.33 AU - 1.41 AU

Year: 1020 Days

Day: 12 Hours

Environment

Temp: -172 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 21,023,988 km

• M1: 140,472 km (0.112 R)
• M2: 558,000 km (0.051 R)
• M3: 1,124,826 km (0.109 R)
• M4: 2,025,406 km (0.116 R)
• M5: 2,384,291 km (0.111 R)
• M6: 2,885,743 km (0.069 R)
• M7: 3,537,840 km (0.094 R)
• M8: 3,974,516 km (0.104 R)
• M9: 4,599,087 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.7

Radius: 12

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.87 AU - 2.09 AU

Year: 1771 Days

Day: 12.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 21,023,988 km

• M1: 149,299 km (0.104 R)
• M2: 523,443 km (0.078 R)
• M3: 1,029,533 km (0.119 R)
• M4: 1,672,205 km (0.067 R)
• M5: 2,319,216 km (0.025 R)
• M6: 3,083,063 km (0.095 R)
• M7: 3,565,067 km (0.063 R)
• M8: 4,151,341 km (0.071 R)
• M9: 4,642,471 km (0.114 R)
• M10: 5,517,917 km (0.031 R)
• M11: 7,164,840 km (0.076 R)
• M12: 8,044,326 km (0.089 R)
• M13: 8,994,273 km (0.065 R)
• M14: 9,657,440 km (0.088 R)
• M15: 11,476,550 km (0.111 R)
• M16: 12,068,060 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711.9

Radius: 14.7

Gravity: 3.29 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 2.83 AU - 2.99 AU

Year: 3156 Days

Day: 9.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 21,023,988 km

• M1: 185,501 km (0.066 R)
• M2: 694,134 km (0.08 R)
• M3: 1,224,459 km (0.081 R)
• M4: 1,970,204 km (0.095 R)
• M5: 2,636,363 km (0.093 R)
• M6: 3,285,768 km (0.103 R)
• M7: 3,999,349 km (0.082 R)
• M8: 5,325,235 km (0.098 R)
• M9: 9,676,589 km (0.113 R)
• M10: 12,090,949 km (0.099 R)
• M11: 14,185,319 km (0.116 R)
• M12: 14,732,099 km (0.107 R)
• M13: 16,349,102 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 301.4

Radius: 9.7

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 3.04 AU - 4.2 AU

Year: 4379 Days

Day: 8.2 Hours

Environment

Temp: -210 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 21,023,988 km

• M1: 120,725 km (0.114 R)
• M2: 492,327 km (0.1 R)
• M3: 927,806 km (0.055 R)
• M4: 1,877,154 km (0.089 R)
• M5: 2,432,312 km (0.075 R)
• M6: 5,273,175 km (0.112 R)
• M7: 5,914,352 km (0.074 R)
• M8: 10,040,411 km (0.067 R)
• M9: 12,334,045 km (0.065 R)
• M10: 13,003,197 km (0.08 R)
• M11: 16,772,165 km (0.08 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: 374 - 12,736 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit