🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.91

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.45 AU - 0.57 AU

Year: 232 Days

Day: 38.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 39.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.36

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.44 AU - 0.58 AU

Year: 232 Days

Day: 14.8 Hours

Environment

Temp: -125 °C

Axial Tilt: 24.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 565.3

Radius: 11.4

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.79 AU - 0.83 AU

Year: 464 Days

Day: 13.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 56.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 33,690,938 km

• M1: 141,968 km (0.086 R)
• M2: 696,228 km (0.068 R)
• M3: 1,083,388 km (0.103 R)
• M4: 1,739,524 km (0.078 R)
• M5: 2,124,888 km (0.113 R)
• M6: 2,942,889 km (0.095 R)
• M7: 3,508,220 km (0.077 R)
• M8: 4,592,206 km (0.062 R)
• M9: 5,055,810 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.8

Radius: 14.9

Gravity: 0.09 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.97 AU - 1.09 AU

Year: 665 Days

Day: 6.5 Hours

Environment

Temp: -159 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 33,690,938 km

• M1: 186,848 km (0.055 R)
• M2: 1,125,425 km (0.064 R)
• M3: 1,607,579 km (0.11 R)
• M4: 2,132,368 km (0.071 R)

Asteroid Belt

Center: 1.77 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 572.3

Radius: 11

Gravity: 4.73 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 2.33 AU - 2.69 AU

Year: 2528 Days

Day: 12.2 Hours

Environment

Temp: -191 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 33,690,938 km

• M1: 138,228 km (0.112 R)
• M2: 592,108 km (0.069 R)
• M3: 986,598 km (0.082 R)
• M4: 1,435,840 km (0.092 R)
• M5: 1,903,334 km (0.066 R)
• M6: 2,257,282 km (0.09 R)
• M7: 2,973,407 km (0.116 R)
• M8: 3,686,690 km (0.088 R)
• M9: 4,616,291 km (0.11 R)
• M10: 5,102,035 km (0.116 R)
• M11: 6,255,136 km (0.118 R)
• M12: 7,396,119 km (0.11 R)
• M13: 8,188,539 km (0.106 R)
• M14: 9,343,434 km (0.085 R)
• M15: 10,269,445 km (0.069 R)
• M16: 11,333,834 km (0.108 R)
• M17: 12,980,009 km (0.115 R)
• M18: 15,838,226 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 551.4

Radius: 11.4

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 2.33 AU - 2.79 AU

Year: 2604 Days

Day: 10.7 Hours

Environment

Temp: -192 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 33,690,938 km

• M1: 141,819 km (0.111 R)
• M2: 521,049 km (0.104 R)
• M3: 942,167 km (0.052 R)
• M4: 1,710,352 km (0.067 R)
• M5: 2,277,478 km (0.105 R)
• M6: 2,678,699 km (0.112 R)
• M7: 3,413,225 km (0.112 R)
• M8: 3,772,410 km (0.096 R)
• M9: 4,257,107 km (0.055 R)
• M10: 4,849,215 km (0.068 R)
• M11: 5,495,627 km (0.082 R)
• M12: 5,864,985 km (0.107 R)
• M13: 6,383,491 km (0.043 R)
• M14: 7,218,396 km (0.065 R)
• M15: 8,638,080 km (0.093 R)
• M16: 9,104,975 km (0.092 R)
• M17: 11,261,129 km (0.061 R)
• M18: 12,353,343 km (0.079 R)
• M19: 13,782,751 km (0.102 R)
• M20: 14,654,159 km (0.047 R)
• M21: 15,610,687 km (0.095 R)
• M22: 16,761,544 km (0.076 R)
• M23: 17,861,088 km (0.062 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 671.9

Radius: 8.1

Gravity: 10.24 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 2.1 AU - 3.48 AU

Year: 2963 Days

Day: 11 Hours

Environment

Temp: -202 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,690,938 km

• M1: 102,475 km (0.113 R)
• M2: 675,285 km (0.104 R)
• M3: 1,067,381 km (0.027 R)
• M4: 1,489,845 km (0.074 R)
• M5: 3,097,125 km (0.105 R)
• M6: 4,253,666 km (0.056 R)
• M7: 5,343,337 km (0.042 R)
• M8: 8,988,139 km (0.065 R)
• M9: 14,802,261 km (0.095 R)
• M10: 15,102,653 km (0.092 R)
• M11: 17,210,188 km (0.12 R)
• M12: 19,566,354 km (0.116 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 135.1

Radius: 5.9

Gravity: 3.88 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 7.31 AU - 7.85 AU

Year: 13269 Days

Day: 15.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 33,690,938 km

• M1: 78,988 km (0.036 R)
• M2: 416,929 km (0.096 R)
• M3: 2,176,799 km (0.086 R)
• M4: 2,690,667 km (0.077 R)
• M5: 5,455,685 km (0.113 R)
• M6: 11,261,728 km (0.102 R)
• M7: 13,097,443 km (0.106 R)
• M8: 27,201,231 km (0.077 R)
• M9: 31,810,940 km (0.075 R)
• M10: 32,989,921 km (0.098 R)
• M11: 33,189,185 km (0.064 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 271 - 15,717 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit