🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.38

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.55 AU - 0.61 AU

Year: 281 Days

Day: 39.3 Hours

Environment

Temp: -117 °C

Axial Tilt: 4.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 471.1

Radius: 9.7

Gravity: 5.01 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.04 AU - 1.08 AU

Year: 694 Days

Day: 12.5 Hours

Environment

Temp: -161 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 47,363,555 km

• M1: 130,300 km (0.101 R)
• M2: 652,247 km (0.072 R)
• M3: 993,330 km (0.1 R)
• M4: 2,488,710 km (0.101 R)
• M5: 2,909,529 km (0.1 R)
• M6: 3,757,450 km (0.082 R)
• M7: 4,239,304 km (0.072 R)
• M8: 4,635,140 km (0.118 R)
• M9: 5,643,729 km (0.042 R)
• M10: 7,060,571 km (0.042 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.9

Radius: 13

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.18 AU - 1.34 AU

Year: 899 Days

Day: 7.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 47,363,555 km

• M1: 172,038 km (0.11 R)
• M2: 803,191 km (0.12 R)
• M3: 1,226,403 km (0.054 R)
• M4: 2,023,311 km (0.071 R)
• M5: 2,480,034 km (0.101 R)
• M6: 3,296,389 km (0.089 R)
• M7: 4,872,253 km (0.093 R)
• M8: 5,599,149 km (0.065 R)
• M9: 6,608,336 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203.8

Radius: 11.3

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.47 AU - 1.61 AU

Year: 1215 Days

Day: 7.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 47,363,555 km

• M1: 140,622 km (0.073 R)
• M2: 920,775 km (0.11 R)
• M3: 1,691,952 km (0.115 R)
• M4: 2,228,559 km (0.096 R)
• M5: 2,596,869 km (0.117 R)
• M6: 3,078,575 km (0.11 R)
• M7: 4,344,921 km (0.072 R)
• M8: 5,044,291 km (0.088 R)
• M9: 5,539,011 km (0.095 R)
• M10: 6,143,985 km (0.105 R)
• M11: 6,626,138 km (0.086 R)
• M12: 7,508,467 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 873.7

Radius: 11.6

Gravity: 6.49 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.81 AU - 2.39 AU

Year: 1935 Days

Day: 7.8 Hours

Environment

Temp: -196 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 47,363,555 km

• M1: 144,212 km (0.075 R)
• M2: 518,805 km (0.099 R)
• M3: 989,740 km (0.072 R)
• M4: 1,912,010 km (0.113 R)
• M5: 3,205,434 km (0.075 R)
• M6: 4,195,023 km (0.11 R)
• M7: 4,665,060 km (0.114 R)
• M8: 5,638,942 km (0.054 R)
• M9: 6,034,180 km (0.119 R)
• M10: 6,662,042 km (0.096 R)
• M11: 8,109,850 km (0.12 R)
• M12: 9,207,899 km (0.113 R)
• M13: 10,402,438 km (0.096 R)
• M14: 11,697,506 km (0.093 R)
• M15: 15,689,974 km (0.035 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 694.4

Radius: 12.3

Gravity: 4.59 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 4.88 AU - 5.24 AU

Year: 7237 Days

Day: 7.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,363,555 km

• M1: 153,039 km (0.06 R)
• M2: 801,545 km (0.085 R)
• M3: 1,956,740 km (0.092 R)
• M4: 2,572,036 km (0.106 R)
• M5: 3,291,452 km (0.065 R)
• M6: 3,990,074 km (0.094 R)
• M7: 4,785,337 km (0.072 R)
• M8: 5,311,472 km (0.057 R)
• M9: 11,625,101 km (0.094 R)
• M10: 13,243,600 km (0.098 R)
• M11: 14,107,079 km (0.114 R)
• M12: 15,316,428 km (0.033 R)
• M13: 19,946,931 km (0.083 R)
• M14: 24,231,863 km (0.117 R)
• M15: 25,261,246 km (0.118 R)
• M16: 26,498,869 km (0.052 R)
• M17: 27,407,227 km (0.051 R)
• M18: 28,430,327 km (0.097 R)
• M19: 29,866,317 km (0.062 R)
• M20: 32,882,360 km (0.112 R)
• M21: 37,665,004 km (0.104 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 18.7

Radius: 7.1

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 5.22 AU - 8.44 AU

Year: 11349 Days

Day: 16.6 Hours

Environment

Temp: -222 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 47,363,555 km

• M1: 89,609 km (0.119 R)
• M2: 619,335 km (0.101 R)
• M3: 1,740,721 km (0.079 R)
• M4: 2,413,014 km (0.091 R)
• M5: 2,874,822 km (0.094 R)
• M6: 4,162,561 km (0.119 R)
• M7: 4,659,674 km (0.094 R)
• M8: 5,513,430 km (0.033 R)
• M9: 7,079,121 km (0.041 R)
• M10: 11,096,422 km (0.036 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 706.6

Radius: 8

Gravity: 11.04 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 7.88 AU - 11.42 AU

Year: 19060 Days

Day: 15 Hours

Environment

Temp: -224 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 47,363,555 km

• M1: 100,081 km (0.112 R)
• M2: 547,678 km (0.085 R)
• M3: 957,726 km (0.04 R)
• M4: 1,679,834 km (0.118 R)
• M5: 2,357,662 km (0.045 R)
• M6: 3,126,147 km (0.085 R)
• M7: 3,655,873 km (0.103 R)
• M8: 4,147,302 km (0.088 R)
• M9: 4,612,551 km (0.094 R)
• M10: 5,413,797 km (0.088 R)
• M11: 7,720,896 km (0.084 R)
• M12: 8,373,741 km (0.089 R)
• M13: 8,634,490 km (0.05 R)
• M14: 10,196,292 km (0.106 R)
• M15: 10,797,226 km (0.089 R)
• M16: 16,159,712 km (0.114 R)
• M17: 17,142,719 km (0.105 R)
• M18: 26,375,152 km (0.108 R)
• M19: 30,967,806 km (0.114 R)
• M20: 34,709,548 km (0.11 R)
• M21: 43,386,374 km (0.115 R)
• M22: 44,642,398 km (0.102 R)
• M23: 47,557,163 km (0.108 R)
• M24: 49,569,254 km (0.032 R)
• M25: 52,515,884 km (0.113 R)
• M26: 56,129,570 km (0.091 R)
• M27: 61,266,162 km (0.094 R)
• M28: 62,250,666 km (0.099 R)
• M29: 66,087,702 km (0.066 R)
• M30: 66,500,592 km (0.046 R)
• M31: 71,589,911 km (0.053 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 162.5

Radius: 3.3

Gravity: 14.92 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 9.37 AU - 10.67 AU

Year: 20167 Days

Day: 18.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 47,363,555 km

• M1: 42,187 km (0.03 R)
• M2: 234,869 km (0.099 R)
• M3: 448,794 km (0.082 R)
• M4: 754,123 km (0.032 R)
• M5: 1,219,223 km (0.12 R)
• M6: 1,506,151 km (0.098 R)
• M7: 1,695,692 km (0.089 R)
• M8: 2,979,690 km (0.063 R)
• M9: 3,829,855 km (0.071 R)
• M10: 4,922,967 km (0.07 R)
• M11: 10,835,224 km (0.115 R)
• M12: 14,020,462 km (0.103 R)
• M13: 16,342,371 km (0.041 R)
• M14: 18,000,065 km (0.054 R)
• M15: 18,149,363 km (0.064 R)
• M16: 18,985,017 km (0.113 R)
• M17: 20,326,311 km (0.075 R)
• M18: 20,896,579 km (0.086 R)
• M19: 27,789,899 km (0.093 R)
• M20: 30,668,910 km (0.101 R)
• M21: 34,654,347 km (0.095 R)
• M22: 41,128,793 km (0.104 R)
• M23: 42,831,516 km (0.047 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 211 - 18,254 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit