🌌 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: 1.91

Radius: 1.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.55 AU - 0.71 AU

Year: 328 Days

Day: 36.9 Hours

Environment

Temp: -124 °C

Axial Tilt: 29.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 438.2

Radius: 14.5

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.68 AU - 0.98 AU

Year: 496 Days

Day: 13.9 Hours

Environment

Temp: -148 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,359,445 km

• M1: 184,305 km (0.099 R)
• M2: 762,201 km (0.098 R)
• M3: 1,271,582 km (0.088 R)
• M4: 1,839,755 km (0.04 R)
• M5: 2,502,324 km (0.043 R)
• M6: 3,310,302 km (0.096 R)
• M7: 4,100,627 km (0.033 R)
• M8: 4,618,984 km (0.115 R)
• M9: 5,495,328 km (0.073 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 285

Radius: 12.3

Gravity: 1.88 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.88 AU - 1.18 AU

Year: 686 Days

Day: 10.3 Hours

Environment

Temp: -152 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,359,445 km

• M1: 154,834 km (0.071 R)
• M2: 717,920 km (0.095 R)
• M3: 1,206,656 km (0.072 R)
• M4: 1,894,358 km (0.058 R)
• M5: 2,820,069 km (0.107 R)
• M6: 3,327,206 km (0.092 R)
• M7: 3,766,126 km (0.085 R)
• M8: 4,299,293 km (0.104 R)
• M9: 5,209,447 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313.7

Radius: 10.1

Gravity: 3.08 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.69 AU - 2.29 AU

Year: 1842 Days

Day: 10.5 Hours

Environment

Temp: -185 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,359,445 km

• M1: 125,662 km (0.039 R)
• M2: 461,360 km (0.104 R)
• M3: 935,286 km (0.112 R)
• M4: 1,484,011 km (0.038 R)
• M5: 1,958,087 km (0.11 R)
• M6: 3,652,881 km (0.071 R)
• M7: 5,423,521 km (0.044 R)
• M8: 6,722,180 km (0.069 R)
• M9: 7,139,409 km (0.08 R)
• M10: 8,300,288 km (0.051 R)
• M11: 9,131,454 km (0.047 R)
• M12: 11,059,920 km (0.107 R)
• M13: 11,677,460 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 51.4

Radius: 9

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 2.25 AU - 2.73 AU

Year: 2578 Days

Day: 7.7 Hours

Environment

Temp: -204 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 34,359,445 km

• M1: 113,096 km (0.112 R)
• M2: 470,186 km (0.045 R)
• M3: 1,091,466 km (0.103 R)
• M4: 1,753,885 km (0.081 R)
• M5: 2,083,749 km (0.094 R)
• M6: 3,915,275 km (0.111 R)
• M7: 5,054,314 km (0.105 R)
• M8: 5,430,253 km (0.062 R)
• M9: 6,078,461 km (0.119 R)
• M10: 7,505,924 km (0.077 R)
• M11: 7,901,012 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 334.4

Radius: 11.9

Gravity: 2.36 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.71 AU - 3.75 AU

Year: 3808 Days

Day: 12.3 Hours

Environment

Temp: -198 °C

Axial Tilt: 5.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 34,359,445 km

• M1: 147,952 km (0.117 R)
• M2: 603,627 km (0.073 R)
• M3: 1,006,345 km (0.059 R)
• M4: 1,606,083 km (0.095 R)
• M5: 3,212,764 km (0.059 R)
• M6: 4,047,819 km (0.114 R)
• M7: 4,484,645 km (0.078 R)
• M8: 4,952,886 km (0.101 R)
• M9: 5,380,138 km (0.12 R)
• M10: 5,754,880 km (0.059 R)
• M11: 6,227,759 km (0.085 R)
• M12: 7,524,474 km (0.113 R)
• M13: 8,058,688 km (0.057 R)
• M14: 9,632,009 km (0.117 R)
• M15: 10,074,220 km (0.093 R)
• M16: 11,239,438 km (0.099 R)
• M17: 11,771,408 km (0.103 R)
• M18: 12,234,563 km (0.062 R)
• M19: 13,063,335 km (0.085 R)
• M20: 14,591,328 km (0.056 R)
• M21: 15,927,536 km (0.12 R)
• M22: 18,221,619 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 853.1

Radius: 8

Gravity: 13.33 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 2.71 AU - 4.49 AU

Year: 4481 Days

Day: 14.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 34,359,445 km

• M1: 107,710 km (0.087 R)
• M2: 386,262 km (0.12 R)
• M3: 953,537 km (0.12 R)
• M4: 1,777,223 km (0.075 R)
• M5: 2,189,066 km (0.069 R)
• M6: 2,698,596 km (0.084 R)
• M7: 3,304,916 km (0.116 R)
• M8: 3,554,595 km (0.115 R)
• M9: 4,234,667 km (0.069 R)
• M10: 4,865,372 km (0.097 R)
• M11: 6,063,650 km (0.111 R)
• M12: 6,600,707 km (0.083 R)
• M13: 6,931,318 km (0.098 R)
• M14: 7,307,557 km (0.104 R)
• M15: 8,101,173 km (0.115 R)
• M16: 8,792,166 km (0.094 R)
• M17: 10,247,305 km (0.058 R)
• M18: 16,213,866 km (0.083 R)
• M19: 16,877,632 km (0.061 R)
• M20: 18,066,785 km (0.104 R)
• M21: 19,310,692 km (0.11 R)
• M22: 19,647,287 km (0.1 R)
• M23: 20,680,858 km (0.108 R)
• M24: 21,677,629 km (0.063 R)
• M25: 22,930,810 km (0.073 R)
• M26: 23,308,395 km (0.118 R)
• M27: 23,921,148 km (0.107 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 380.3

Radius: 3.8

Gravity: 26.34 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 5.88 AU - 6.64 AU

Year: 10275 Days

Day: 23.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 34,359,445 km

• M1: 47,273 km (0.075 R)
• M2: 190,737 km (0.05 R)
• M3: 317,746 km (0.115 R)
• M4: 554,111 km (0.08 R)
• M5: 776,114 km (0.06 R)
• M6: 994,377 km (0.114 R)
• M7: 1,384,977 km (0.103 R)
• M8: 1,608,177 km (0.063 R)
• M9: 2,387,582 km (0.057 R)
• M10: 2,611,530 km (0.116 R)
• M11: 3,437,011 km (0.088 R)
• M12: 5,680,979 km (0.103 R)
• M13: 5,878,149 km (0.049 R)
• M14: 8,444,501 km (0.087 R)
• M15: 8,572,407 km (0.102 R)
• M16: 11,254,846 km (0.038 R)
• M17: 12,314,897 km (0.12 R)
• M18: 14,631,270 km (0.085 R)
• M19: 17,085,872 km (0.116 R)
• M20: 17,290,671 km (0.088 R)
• M21: 19,281,071 km (0.076 R)
• M22: 21,261,448 km (0.091 R)
• M23: 21,419,124 km (0.07 R)
• M24: 21,977,423 km (0.119 R)
• M25: 22,791,535 km (0.102 R)
• M26: 23,794,738 km (0.032 R)
• M27: 24,393,429 km (0.026 R)
• M28: 25,443,007 km (0.104 R)
• M29: 26,068,925 km (0.1 R)
• M30: 27,631,624 km (0.098 R)
• M31: 28,102,858 km (0.113 R)
• M32: 28,579,476 km (0.108 R)
• M33: 39,041,604 km (0.043 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 165.2

Radius: 3.6

Gravity: 12.75 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 5.42 AU - 8.74 AU

Year: 12358 Days

Day: 18.8 Hours

Environment

Temp: -226 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 34,359,445 km

• M1: 60,438 km (0.028 R)
• M2: 269,127 km (0.109 R)
• M3: 440,865 km (0.111 R)
• M4: 620,532 km (0.053 R)
• M5: 1,117,346 km (0.1 R)
• M6: 2,678,999 km (0.099 R)
• M7: 3,911,236 km (0.073 R)
• M8: 5,974,640 km (0.026 R)
• M9: 6,233,893 km (0.107 R)
• M10: 9,731,790 km (0.101 R)
• M11: 13,013,369 km (0.118 R)
• M12: 15,771,655 km (0.103 R)
• M13: 17,092,006 km (0.12 R)
• M14: 19,594,628 km (0.119 R)
• M15: 20,675,174 km (0.118 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 355 - 11,510 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit