🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.28

Radius: 1.39

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.51 AU - 0.57 AU

Year: 256 Days

Day: 33.3 Hours

Environment

Temp: -115 °C

Axial Tilt: 39 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.53 AU - 0.73 AU

Year: 323 Days

Day: 24.7 Hours

Environment

Temp: -130 °C

Axial Tilt: 5.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 818.2

Radius: 9.7

Gravity: 8.7 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 0.86 AU - 1.12 AU

Year: 636 Days

Day: 8.6 Hours

Environment

Temp: -166 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 17,285,862 km

• M1: 120,725 km (0.095 R)
• M2: 489,933 km (0.047 R)
• M3: 1,249,591 km (0.084 R)
• M4: 2,894,120 km (0.068 R)
• M5: 3,750,867 km (0.102 R)
• M6: 4,331,606 km (0.062 R)
• M7: 5,092,611 km (0.109 R)
• M8: 5,616,502 km (0.119 R)
• M9: 6,603,998 km (0.038 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 852.9

Radius: 9.7

Gravity: 9.06 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 1.27 AU - 1.73 AU

Year: 1186 Days

Day: 9.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 17,285,862 km

• M1: 141,370 km (0.087 R)
• M2: 571,763 km (0.097 R)
• M3: 1,067,082 km (0.079 R)
• M4: 1,509,742 km (0.118 R)
• M5: 1,976,936 km (0.08 R)
• M6: 2,367,985 km (0.049 R)
• M7: 2,974,305 km (0.109 R)
• M8: 3,600,970 km (0.058 R)
• M9: 3,980,051 km (0.106 R)
• M10: 5,405,420 km (0.096 R)
• M11: 6,061,556 km (0.077 R)
• M12: 6,794,586 km (0.096 R)
• M13: 7,323,863 km (0.079 R)
• M14: 7,962,197 km (0.101 R)
• M15: 9,108,117 km (0.109 R)
• M16: 9,411,052 km (0.091 R)
• M17: 10,133,311 km (0.071 R)
• M18: 10,624,142 km (0.109 R)
• M19: 11,028,056 km (0.12 R)
• M20: 11,830,948 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 59.5

Radius: 11.9

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1.72 AU - 1.88 AU

Year: 1559 Days

Day: 7.1 Hours

Environment

Temp: -184 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 17,285,862 km

• M1: 147,952 km (0.081 R)
• M2: 583,132 km (0.07 R)
• M3: 996,771 km (0.081 R)
• M4: 1,728,753 km (0.068 R)
• M5: 2,502,024 km (0.082 R)
• M6: 3,051,198 km (0.087 R)
• M7: 3,481,442 km (0.075 R)
• M8: 3,965,391 km (0.119 R)
• M9: 5,727,953 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 802.3

Radius: 8.4

Gravity: 11.37 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.62 AU - 2.4 AU

Year: 1840 Days

Day: 14 Hours

Environment

Temp: -182 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 17,285,862 km

• M1: 104,569 km (0.081 R)
• M2: 373,695 km (0.116 R)
• M3: 693,386 km (0.04 R)
• M4: 1,031,328 km (0.112 R)
• M5: 1,526,048 km (0.057 R)
• M6: 1,867,131 km (0.032 R)
• M7: 2,233,496 km (0.088 R)
• M8: 2,971,911 km (0.095 R)
• M9: 3,919,165 km (0.111 R)
• M10: 4,381,871 km (0.097 R)
• M11: 5,188,503 km (0.108 R)
• M12: 5,966,412 km (0.093 R)
• M13: 7,605,855 km (0.062 R)
• M14: 7,960,701 km (0.09 R)
• M15: 8,545,030 km (0.091 R)
• M16: 8,961,062 km (0.107 R)
• M17: 9,290,327 km (0.105 R)
• M18: 10,148,869 km (0.077 R)
• M19: 13,853,660 km (0.091 R)
• M20: 14,789,844 km (0.102 R)
• M21: 16,054,544 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 907.7

Radius: 14.6

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.97 AU - 2.11 AU

Year: 1881 Days

Day: 11.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 17,285,862 km

• M1: 181,612 km (0.089 R)
• M2: 716,125 km (0.05 R)
• M3: 1,284,447 km (0.113 R)
• M4: 1,901,239 km (0.116 R)
• M5: 2,371,276 km (0.095 R)
• M6: 3,089,794 km (0.062 R)
• M7: 3,821,029 km (0.056 R)
• M8: 4,540,445 km (0.064 R)
• M9: 5,166,362 km (0.09 R)
• M10: 6,251,845 km (0.05 R)
• M11: 7,601,367 km (0.113 R)
• M12: 8,424,006 km (0.109 R)
• M13: 9,104,227 km (0.106 R)
• M14: 9,997,027 km (0.07 R)
• M15: 10,464,820 km (0.09 R)
• M16: 11,957,208 km (0.083 R)
• M17: 13,327,525 km (0.072 R)
• M18: 13,895,249 km (0.073 R)
• M19: 15,937,559 km (0.072 R)
• M20: 17,081,384 km (0.066 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 160 - 12,940 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit