🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.39

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.58 AU - 0.68 AU

Year: 323 Days

Day: 18.8 Hours

Environment

Temp: -138 °C

Axial Tilt: 28.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 6,570,423 km

• M1: 618,737 km (0.092 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 249.1

Radius: 12.9

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.56 AU - 0.82 AU

Year: 370 Days

Day: 11.5 Hours

Environment

Temp: -134 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 6,570,423 km

• M1: 160,519 km (0.101 R)
• M2: 580,739 km (0.118 R)
• M3: 1,127,818 km (0.084 R)
• M4: 1,732,792 km (0.032 R)
• M5: 2,540,172 km (0.038 R)
• M6: 3,115,974 km (0.092 R)
• M7: 3,616,977 km (0.056 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 240.9

Radius: 10.2

Gravity: 2.32 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.72 AU - 1.02 AU

Year: 524 Days

Day: 10.2 Hours

Environment

Temp: -150 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 6,570,423 km

• M1: 127,009 km (0.095 R)
• M2: 514,317 km (0.07 R)
• M3: 936,483 km (0.052 R)
• M4: 1,551,180 km (0.067 R)
• M5: 2,134,911 km (0.106 R)
• M6: 2,478,687 km (0.08 R)
• M7: 2,811,094 km (0.087 R)
• M8: 3,432,224 km (0.061 R)
• M9: 3,980,799 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 876.4

Radius: 10.4

Gravity: 8.1 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.84 AU - 1.36 AU

Year: 745 Days

Day: 9.7 Hours

Environment

Temp: -158 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 6,570,423 km

• M1: 129,402 km (0.11 R)
• M2: 508,782 km (0.076 R)
• M3: 887,415 km (0.036 R)
• M4: 1,264,700 km (0.086 R)
• M5: 1,865,186 km (0.098 R)
• M6: 3,854,988 km (0.113 R)
• M7: 4,624,669 km (0.091 R)
• M8: 5,590,173 km (0.084 R)
• M9: 6,929,074 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 229.2

Radius: 10

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 1.33 AU - 1.35 AU

Year: 1002 Days

Day: 10 Hours

Environment

Temp: -174 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 6,570,423 km

• M1: 124,316 km (0.073 R)
• M2: 810,820 km (0.062 R)
• M3: 1,156,541 km (0.026 R)
• M4: 1,717,234 km (0.04 R)
• M5: 2,217,040 km (0.115 R)
• M6: 2,845,352 km (0.078 R)
• M7: 3,407,092 km (0.091 R)
• M8: 4,055,598 km (0.097 R)
• M9: 5,742,165 km (0.114 R)
• M10: 6,057,068 km (0.089 R)
• M11: 6,600,707 km (0.053 R)
• M12: 7,155,565 km (0.105 R)

Asteroid Belt

Center: 1.7 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 359.2

Radius: 11.7

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 1.61 AU - 2.49 AU

Year: 1895 Days

Day: 9.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 6,570,423 km

• M1: 145,559 km (0.094 R)
• M2: 645,365 km (0.12 R)
• M3: 1,014,423 km (0.053 R)
• M4: 1,388,717 km (0.072 R)
• M5: 1,918,293 km (0.099 R)
• M6: 2,419,446 km (0.1 R)
• M7: 3,282,925 km (0.045 R)
• M8: 4,197,866 km (0.076 R)
• M9: 4,792,667 km (0.094 R)
• M10: 5,464,361 km (0.083 R)
• M11: 7,020,927 km (0.087 R)
• M12: 8,766,435 km (0.107 R)
• M13: 10,450,907 km (0.111 R)
• M14: 11,795,044 km (0.115 R)
• M15: 12,194,171 km (0.038 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 742.8

Radius: 9.2

Gravity: 8.78 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 2.04 AU - 2.28 AU

Year: 2050 Days

Day: 12.6 Hours

Environment

Temp: -182 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 6,570,423 km

• M1: 114,442 km (0.102 R)
• M2: 430,842 km (0.092 R)
• M3: 782,846 km (0.096 R)
• M4: 1,130,960 km (0.104 R)
• M5: 1,684,771 km (0.039 R)
• M6: 2,151,965 km (0.116 R)
• M7: 2,689,321 km (0.07 R)
• M8: 3,149,035 km (0.084 R)
• M9: 3,678,462 km (0.117 R)
• M10: 5,947,114 km (0.038 R)
• M11: 6,594,723 km (0.11 R)
• M12: 6,977,394 km (0.083 R)
• M13: 7,877,824 km (0.103 R)
• M14: 8,371,946 km (0.098 R)
• M15: 8,788,426 km (0.096 R)
• M16: 9,286,138 km (0.092 R)
• M17: 9,872,861 km (0.035 R)
• M18: 10,780,322 km (0.052 R)
• M19: 11,901,558 km (0.098 R)
• M20: 12,346,611 km (0.108 R)
• M21: 12,971,183 km (0.103 R)
• M22: 13,313,014 km (0.119 R)
• M23: 16,564,523 km (0.072 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 23

Radius: 14.2

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 2.1 AU - 3.18 AU

Year: 2770 Days

Day: 8.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 6,570,423 km

• M1: 176,525 km (0.084 R)
• M2: 1,578,407 km (0.101 R)
• M3: 2,736,145 km (0.042 R)
• M4: 4,386,958 km (0.109 R)
• M5: 5,436,536 km (0.084 R)
• M6: 6,342,950 km (0.08 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 255 - 20,042 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit