🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.86

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.6 AU - 0.7 AU

Year: 338 Days

Day: 17.6 Hours

Environment

Temp: -125 °C

Axial Tilt: 11.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 707.3

Radius: 11.7

Gravity: 5.17 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.7 AU - 1 AU

Year: 506 Days

Day: 10.1 Hours

Environment

Temp: -151 °C

Axial Tilt: 43.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 50,228,781 km

• M1: 145,708 km (0.069 R)
• M2: 521,199 km (0.067 R)
• M3: 980,315 km (0.117 R)
• M4: 1,403,677 km (0.086 R)
• M5: 1,781,860 km (0.065 R)
• M6: 2,165,728 km (0.034 R)
• M7: 2,719,390 km (0.11 R)
• M8: 3,341,568 km (0.112 R)
• M9: 3,706,586 km (0.087 R)
• M10: 4,593,103 km (0.096 R)
• M11: 5,512,382 km (0.05 R)
• M12: 5,898,494 km (0.113 R)
• M13: 6,416,253 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 850.3

Radius: 10.4

Gravity: 7.86 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.96 AU - 1.08 AU

Year: 665 Days

Day: 11.2 Hours

Environment

Temp: -161 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 50,228,781 km

• M1: 129,402 km (0.099 R)
• M2: 627,114 km (0.091 R)
• M3: 1,195,437 km (0.116 R)
• M4: 1,545,196 km (0.066 R)
• M5: 1,892,263 km (0.052 R)
• M6: 3,122,407 km (0.045 R)
• M7: 3,975,713 km (0.067 R)
• M8: 4,408,948 km (0.051 R)
• M9: 6,404,584 km (0.089 R)
• M10: 6,979,937 km (0.097 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 266.1

Radius: 11.3

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.15 AU - 1.21 AU

Year: 828 Days

Day: 11.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 50,228,781 km

• M1: 140,472 km (0.101 R)
• M2: 517,309 km (0.111 R)
• M3: 924,365 km (0.05 R)
• M4: 1,344,586 km (0.067 R)
• M5: 1,735,485 km (0.1 R)
• M6: 2,467,467 km (0.117 R)
• M7: 2,983,281 km (0.045 R)
• M8: 3,419,658 km (0.118 R)
• M9: 4,556,153 km (0.119 R)
• M10: 5,170,402 km (0.071 R)
• M11: 5,910,761 km (0.116 R)
• M12: 6,449,015 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.5

Radius: 8.2

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 2.57 AU - 3.25 AU

Year: 3205 Days

Day: 11.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 50,228,781 km

• M1: 119,828 km (0.109 R)
• M2: 435,031 km (0.083 R)
• M3: 1,245,402 km (0.076 R)
• M4: 2,807,503 km (0.072 R)
• M5: 3,584,365 km (0.082 R)
• M6: 3,925,598 km (0.093 R)
• M7: 5,829,231 km (0.055 R)
• M8: 6,302,259 km (0.074 R)
• M9: 10,091,723 km (0.119 R)
• M10: 10,669,919 km (0.071 R)
• M11: 12,421,859 km (0.08 R)
• M12: 13,609,367 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 915.7

Radius: 12.6

Gravity: 5.77 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 3.24 AU - 3.98 AU

Year: 4429 Days

Day: 6.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 50,228,781 km

• M1: 156,928 km (0.063 R)
• M2: 573,409 km (0.065 R)
• M3: 1,223,860 km (0.098 R)
• M4: 1,616,704 km (0.118 R)
• M5: 3,146,941 km (0.102 R)
• M6: 4,158,073 km (0.106 R)
• M7: 6,749,407 km (0.113 R)
• M8: 8,423,258 km (0.093 R)
• M9: 13,875,053 km (0.118 R)
• M10: 14,977,888 km (0.059 R)
• M11: 15,435,060 km (0.115 R)
• M12: 18,967,364 km (0.092 R)
• M13: 21,529,078 km (0.106 R)
• M14: 24,707,435 km (0.12 R)
• M15: 29,503,842 km (0.073 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 822.8

Radius: 4.2

Gravity: 46.64 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 9.38 AU - 10.08 AU

Year: 19597 Days

Day: 20.2 Hours

Environment

Temp: -228 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 50,228,781 km

• M1: 52,210 km (0.06 R)
• M2: 211,681 km (0.095 R)
• M3: 410,497 km (0.101 R)
• M4: 680,670 km (0.087 R)
• M5: 878,289 km (0.06 R)
• M6: 2,037,523 km (0.118 R)
• M7: 2,814,834 km (0.089 R)
• M8: 3,383,904 km (0.092 R)
• M9: 3,929,786 km (0.09 R)
• M10: 4,567,373 km (0.09 R)
• M11: 6,480,879 km (0.105 R)
• M12: 7,174,115 km (0.055 R)
• M13: 7,763,232 km (0.044 R)
• M14: 7,966,535 km (0.109 R)
• M15: 9,093,157 km (0.08 R)
• M16: 10,505,810 km (0.116 R)
• M17: 11,990,868 km (0.047 R)
• M18: 12,400,168 km (0.079 R)
• M19: 14,897,255 km (0.087 R)
• M20: 17,710,144 km (0.098 R)
• M21: 19,707,425 km (0.109 R)
• M22: 22,051,923 km (0.059 R)
• M23: 22,357,402 km (0.056 R)
• M24: 28,471,467 km (0.11 R)
• M25: 28,833,793 km (0.078 R)
• M26: 33,290,313 km (0.071 R)
• M27: 43,857,309 km (0.079 R)
• M28: 45,317,384 km (0.06 R)
• M29: 46,809,623 km (0.094 R)
• M30: 57,988,772 km (0.071 R)
• M31: 61,740,388 km (0.049 R)
• M32: 62,957,815 km (0.117 R)
• M33: 63,572,513 km (0.082 R)
• M34: 64,191,250 km (0.106 R)
• M35: 71,708,692 km (0.075 R)
• M36: 72,379,040 km (0.054 R)
• M37: 76,489,242 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 176.6

Radius: 5.7

Gravity: 5.44 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 10.13 AU - 10.33 AU

Year: 21127 Days

Day: 16 Hours

Environment

Temp: -229 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 50,228,781 km

• M1: 71,059 km (0.118 R)
• M2: 344,374 km (0.08 R)
• M3: 522,246 km (0.084 R)
• M4: 772,972 km (0.064 R)
• M5: 2,694,856 km (0.097 R)
• M6: 3,092,188 km (0.082 R)
• M7: 4,058,740 km (0.109 R)
• M8: 5,212,289 km (0.109 R)
• M9: 9,359,740 km (0.05 R)
• M10: 9,857,303 km (0.116 R)
• M11: 11,013,694 km (0.081 R)
• M12: 13,845,433 km (0.081 R)
• M13: 14,360,348 km (0.073 R)
• M14: 19,663,443 km (0.045 R)
• M15: 26,628,271 km (0.115 R)
• M16: 29,376,983 km (0.075 R)
• M17: 33,903,665 km (0.062 R)
• M18: 34,252,078 km (0.041 R)
• M19: 36,635,920 km (0.117 R)
• M20: 40,026,556 km (0.074 R)
• M21: 43,347,180 km (0.064 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 404 - 12,222 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit