🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.61

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.44 AU - 0.66 AU

Year: 263 Days

Day: 27.2 Hours

Environment

Temp: -116 °C

Axial Tilt: 29.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 21,706,677 km

• M1: 211,382 km (0.077 R)
• M2: 588,967 km (0.092 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 830.9

Radius: 9.5

Gravity: 9.21 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.69 AU - 0.75 AU

Year: 394 Days

Day: 5.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 21,706,677 km

• M1: 118,182 km (0.084 R)
• M2: 444,306 km (0.059 R)
• M3: 748,289 km (0.1 R)
• M4: 1,187,657 km (0.118 R)
• M5: 1,705,117 km (0.065 R)
• M6: 2,789,252 km (0.086 R)
• M7: 3,101,762 km (0.12 R)
• M8: 3,437,759 km (0.082 R)
• M9: 3,759,544 km (0.105 R)
• M10: 4,551,066 km (0.11 R)
• M11: 5,111,460 km (0.063 R)
• M12: 5,466,007 km (0.112 R)
• M13: 5,854,363 km (0.05 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 161.5

Radius: 11.6

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.88 AU - 1.42 AU

Year: 796 Days

Day: 8 Hours

Environment

Temp: -169 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 21,706,677 km

• M1: 144,362 km (0.112 R)
• M2: 592,707 km (0.062 R)
• M3: 961,466 km (0.118 R)
• M4: 2,136,108 km (0.051 R)
• M5: 3,707,035 km (0.073 R)
• M6: 4,073,550 km (0.062 R)
• M7: 4,999,561 km (0.052 R)
• M8: 5,385,224 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 768.6

Radius: 9.9

Gravity: 7.84 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.11 AU - 1.25 AU

Year: 828 Days

Day: 10.3 Hours

Environment

Temp: -162 °C

Axial Tilt: 46.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 21,706,677 km

• M1: 123,269 km (0.109 R)
• M2: 533,765 km (0.052 R)
• M3: 956,978 km (0.099 R)
• M4: 1,585,139 km (0.086 R)
• M5: 1,973,196 km (0.08 R)
• M6: 2,479,884 km (0.039 R)
• M7: 2,931,071 km (0.114 R)
• M8: 3,800,085 km (0.047 R)
• M9: 4,352,251 km (0.061 R)
• M10: 4,796,557 km (0.042 R)
• M11: 5,461,519 km (0.072 R)
• M12: 5,836,561 km (0.071 R)
• M13: 7,705,637 km (0.073 R)
• M14: 8,513,016 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 248.9

Radius: 8.6

Gravity: 3.37 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.39 AU - 1.57 AU

Year: 1163 Days

Day: 6.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 21,706,677 km

• M1: 106,962 km (0.083 R)
• M2: 403,914 km (0.103 R)
• M3: 728,542 km (0.093 R)
• M4: 1,058,704 km (0.109 R)
• M5: 1,749,846 km (0.096 R)
• M6: 2,079,410 km (0.106 R)
• M7: 2,418,549 km (0.118 R)
• M8: 2,852,981 km (0.112 R)
• M9: 4,147,003 km (0.026 R)
• M10: 4,638,132 km (0.039 R)
• M11: 6,106,286 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 100.6

Radius: 11.1

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 2.67 AU - 3.37 AU

Year: 3389 Days

Day: 10.2 Hours

Environment

Temp: -194 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 21,706,677 km

• M1: 138,378 km (0.118 R)
• M2: 5,708,356 km (0.07 R)
• M3: 7,549,457 km (0.117 R)
• M4: 8,031,461 km (0.106 R)
• M5: 8,648,552 km (0.084 R)
• M6: 9,236,621 km (0.092 R)
• M7: 10,104,588 km (0.044 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 118.3

Radius: 12.3

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 3.64 AU - 5.2 AU

Year: 6000 Days

Day: 7 Hours

Environment

Temp: -205 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 21,706,677 km

• M1: 187,147 km (0.12 R)
• M2: 725,101 km (0.105 R)
• M3: 1,130,511 km (0.119 R)
• M4: 1,609,075 km (0.104 R)
• M5: 2,184,428 km (0.052 R)
• M6: 5,230,839 km (0.089 R)
• M7: 6,641,397 km (0.049 R)
• M8: 8,585,721 km (0.067 R)
• M9: 9,510,535 km (0.113 R)
• M10: 10,845,397 km (0.057 R)
• M11: 12,428,591 km (0.111 R)
• M12: 13,792,924 km (0.095 R)
• M13: 14,207,160 km (0.112 R)
• M14: 15,352,631 km (0.061 R)
• M15: 17,237,863 km (0.088 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 24.5

Radius: 6.1

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 6.6 AU - 10.48 AU

Year: 16114 Days

Day: 24.9 Hours

Environment

Temp: -226 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 21,706,677 km

• M1: 80,484 km (0.084 R)
• M2: 739,163 km (0.068 R)
• M3: 1,136,345 km (0.07 R)
• M4: 1,577,659 km (0.116 R)
• M5: 3,558,185 km (0.101 R)
• M6: 7,817,835 km (0.035 R)
• M7: 11,486,424 km (0.054 R)
• M8: 13,266,339 km (0.054 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 246 - 12,852 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit