🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.83

Radius: 0.93

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.57 AU - 0.77 AU

Year: 195 Days

Day: 26.7 Hours

Environment

Temp: 215 °C

Axial Tilt: 20.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 61,108,839 km

• M1: 169,046 km (0.074 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.18

Radius: 1.37

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.13 AU - 1.29 AU

Year: 474 Days

Day: 13.3 Hours

Environment

Temp: 12 °C

Axial Tilt: 36.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 61,108,839 km

• M1: 163,959 km (0.064 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.12

Radius: 0.43

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 1.8 AU - 2.26 AU

Year: 1031 Days

Day: 28.6 Hours

Environment

Temp: -61 °C

Axial Tilt: 10.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,108,839 km

• M1: 569,070 km (0.059 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.28

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 2.06 AU - 3.36 AU

Year: 1590 Days

Day: 45.8 Hours

Environment

Temp: -90 °C

Axial Tilt: 22.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,108,839 km

• M1: 321,935 km (0.079 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.44 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.91

Radius: 0.96

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 2.78 AU - 4.1 AU

Year: 2274 Days

Day: 41.7 Hours

Environment

Temp: -108 °C

Axial Tilt: 17.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 5.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 80.4

Radius: 14

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 4.88 AU - 6.1 AU

Year: 4585 Days

Day: 12.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 61,108,839 km

• M1: 177,124 km (0.118 R)
• M2: 1,062,743 km (0.094 R)
• M3: 1,550,732 km (0.11 R)
• M4: 3,135,871 km (0.041 R)
• M5: 6,199,635 km (0.108 R)
• M6: 7,884,107 km (0.116 R)
• M7: 8,637,183 km (0.066 R)
• M8: 10,253,737 km (0.109 R)
• M9: 10,975,098 km (0.085 R)
• M10: 12,596,440 km (0.074 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 186.6

Radius: 14.5

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 6.05 AU - 8.83 AU

Year: 7234 Days

Day: 8.9 Hours

Environment

Temp: -159 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 61,108,839 km

• M1: 180,265 km (0.103 R)
• M2: 786,586 km (0.117 R)
• M3: 1,292,526 km (0.115 R)
• M4: 1,957,039 km (0.09 R)
• M5: 2,946,629 km (0.096 R)
• M6: 3,439,105 km (0.065 R)
• M7: 4,160,167 km (0.101 R)
• M8: 6,515,286 km (0.093 R)
• M9: 8,240,449 km (0.06 R)
• M10: 8,743,248 km (0.08 R)
• M11: 9,343,135 km (0.075 R)
• M12: 10,583,750 km (0.109 R)
• M13: 11,528,910 km (0.094 R)
• M14: 13,587,675 km (0.092 R)
• M15: 19,537,183 km (0.068 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 358.5

Radius: 13.3

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 7.37 AU - 11.63 AU

Year: 10437 Days

Day: 5.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 61,108,839 km

• M1: 324,478 km (0.096 R)
• M2: 1,693,747 km (0.092 R)
• M3: 3,246,872 km (0.104 R)
• M4: 4,222,549 km (0.095 R)
• M5: 5,762,809 km (0.116 R)
• M6: 7,042,021 km (0.065 R)
• M7: 7,456,855 km (0.093 R)
• M8: 13,625,374 km (0.091 R)
• M9: 15,248,511 km (0.095 R)
• M10: 19,605,848 km (0.04 R)
• M11: 27,786,907 km (0.087 R)
• M12: 29,211,976 km (0.09 R)
• M13: 32,622,060 km (0.115 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 175.3

Radius: 6.8

Gravity: 3.79 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 18.13 AU - 18.95 AU

Year: 28455 Days

Day: 23.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 61,108,839 km

• M1: 89,460 km (0.087 R)
• M2: 1,299,108 km (0.113 R)
• M3: 1,991,896 km (0.094 R)
• M4: 4,835,602 km (0.116 R)
• M5: 5,498,470 km (0.083 R)
• M6: 6,180,786 km (0.046 R)
• M7: 12,490,674 km (0.108 R)
• M8: 16,766,181 km (0.09 R)
• M9: 17,154,687 km (0.065 R)
• M10: 20,659,167 km (0.061 R)
• M11: 22,110,864 km (0.045 R)
• M12: 25,419,521 km (0.039 R)
• M13: 27,191,208 km (0.077 R)
• M14: 29,604,222 km (0.11 R)
• M15: 30,862,639 km (0.11 R)
• M16: 46,986,298 km (0.046 R)
• M17: 49,805,918 km (0.081 R)
• M18: 55,436,034 km (0.116 R)
• M19: 56,819,665 km (0.101 R)
• M20: 57,696,159 km (0.111 R)

Kuiper Belt

Range: 30.8 - 54.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 258 - 17,536 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit