🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.21

Radius: 1.08

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.49 AU - 0.57 AU

Year: 249 Days

Day: 23.7 Hours

Environment

Temp: -130 °C

Axial Tilt: 41.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 753.6

Radius: 11.8

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.86 AU - 1.08 AU

Year: 617 Days

Day: 9.8 Hours

Environment

Temp: -163 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 65,018,063 km

• M1: 146,756 km (0.066 R)
• M2: 533,765 km (0.034 R)
• M3: 1,065,885 km (0.089 R)
• M4: 1,456,335 km (0.089 R)
• M5: 2,068,939 km (0.079 R)
• M6: 2,582,508 km (0.051 R)
• M7: 3,010,807 km (0.065 R)
• M8: 3,447,184 km (0.102 R)
• M9: 4,479,858 km (0.116 R)
• M10: 5,561,600 km (0.116 R)
• M11: 6,726,519 km (0.096 R)
• M12: 7,301,274 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 882

Radius: 12.7

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.82 AU - 1.34 AU

Year: 725 Days

Day: 13.6 Hours

Environment

Temp: -173 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 65,018,063 km

• M1: 158,424 km (0.109 R)
• M2: 670,198 km (0.093 R)
• M3: 1,264,551 km (0.115 R)
• M4: 1,977,833 km (0.085 R)
• M5: 3,636,874 km (0.055 R)
• M6: 4,145,207 km (0.086 R)
• M7: 5,783,304 km (0.054 R)
• M8: 7,673,922 km (0.06 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 491.1

Radius: 10.8

Gravity: 4.21 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.07 AU - 1.43 AU

Year: 902 Days

Day: 7 Hours

Environment

Temp: -168 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 65,018,063 km

• M1: 134,788 km (0.073 R)
• M2: 615,446 km (0.073 R)
• M3: 1,056,460 km (0.089 R)
• M4: 1,540,260 km (0.049 R)
• M5: 2,228,559 km (0.117 R)
• M6: 2,877,216 km (0.09 R)
• M7: 3,239,991 km (0.117 R)
• M8: 3,619,371 km (0.046 R)
• M9: 4,649,651 km (0.07 R)
• M10: 5,062,990 km (0.1 R)
• M11: 5,806,791 km (0.086 R)
• M12: 6,184,825 km (0.101 R)
• M13: 7,124,000 km (0.12 R)
• M14: 7,604,509 km (0.109 R)
• M15: 7,960,851 km (0.054 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 958.6

Radius: 9.4

Gravity: 10.85 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 1.19 AU - 1.67 AU

Year: 1104 Days

Day: 7.9 Hours

Environment

Temp: -167 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 65,018,063 km

• M1: 116,986 km (0.113 R)
• M2: 450,290 km (0.089 R)
• M3: 1,123,031 km (0.077 R)
• M4: 1,617,452 km (0.088 R)
• M5: 1,967,661 km (0.058 R)
• M6: 2,538,825 km (0.077 R)
• M7: 2,864,051 km (0.071 R)
• M8: 3,158,609 km (0.099 R)
• M9: 3,892,686 km (0.064 R)
• M10: 4,454,576 km (0.059 R)
• M11: 5,314,614 km (0.05 R)
• M12: 5,784,351 km (0.106 R)
• M13: 6,351,327 km (0.096 R)
• M14: 7,517,592 km (0.071 R)
• M15: 7,891,138 km (0.105 R)
• M16: 8,908,852 km (0.111 R)
• M17: 9,541,651 km (0.066 R)
• M18: 10,301,160 km (0.111 R)
• M19: 11,203,235 km (0.096 R)
• M20: 12,012,410 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 358

Radius: 13.4

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.45 AU - 1.63 AU

Year: 1234 Days

Day: 11.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 65,018,063 km

• M1: 167,250 km (0.087 R)
• M2: 620,083 km (0.069 R)
• M3: 1,286,542 km (0.053 R)
• M4: 2,177,397 km (0.116 R)
• M5: 2,654,764 km (0.098 R)
• M6: 3,323,317 km (0.084 R)
• M7: 3,749,970 km (0.063 R)
• M8: 4,646,061 km (0.052 R)
• M9: 5,799,760 km (0.098 R)
• M10: 6,337,265 km (0.055 R)
• M11: 7,275,842 km (0.078 R)
• M12: 8,908,703 km (0.059 R)
• M13: 9,569,626 km (0.086 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.2

Radius: 9.2

Gravity: 3.26 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 1.76 AU - 1.86 AU

Year: 1572 Days

Day: 12.3 Hours

Environment

Temp: -186 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 65,018,063 km

• M1: 114,742 km (0.05 R)
• M2: 403,914 km (0.112 R)
• M3: 822,639 km (0.074 R)
• M4: 1,329,327 km (0.057 R)
• M5: 1,867,879 km (0.109 R)
• M6: 2,209,561 km (0.112 R)
• M7: 2,510,551 km (0.104 R)
• M8: 3,524,227 km (0.117 R)
• M9: 3,906,150 km (0.063 R)
• M10: 4,231,525 km (0.105 R)
• M11: 5,495,777 km (0.115 R)
• M12: 6,445,873 km (0.095 R)
• M13: 7,452,517 km (0.112 R)
• M14: 8,506,584 km (0.116 R)
• M15: 8,805,630 km (0.09 R)
• M16: 9,367,370 km (0.094 R)
• M17: 9,893,206 km (0.069 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 596.7

Radius: 14

Gravity: 3.04 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.78 AU - 2.42 AU

Year: 1965 Days

Day: 12.5 Hours

Environment

Temp: -197 °C

Axial Tilt: 44 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 65,018,063 km

• M1: 174,431 km (0.109 R)
• M2: 638,783 km (0.116 R)
• M3: 1,145,920 km (0.097 R)
• M4: 1,985,014 km (0.059 R)
• M5: 3,128,241 km (0.062 R)
• M6: 4,336,693 km (0.052 R)
• M7: 4,816,453 km (0.1 R)
• M8: 5,489,045 km (0.062 R)
• M9: 6,028,046 km (0.033 R)
• M10: 6,836,772 km (0.055 R)
• M11: 7,295,140 km (0.064 R)
• M12: 8,394,834 km (0.081 R)
• M13: 8,858,288 km (0.098 R)
• M14: 9,338,797 km (0.096 R)
• M15: 10,599,308 km (0.08 R)
• M16: 11,215,203 km (0.098 R)
• M17: 12,321,180 km (0.049 R)
• M18: 13,582,439 km (0.095 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 599.7

Radius: 5.3

Gravity: 21.35 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 8.57 AU - 9.05 AU

Year: 16884 Days

Day: 16.4 Hours

Environment

Temp: -230 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 65,018,063 km

• M1: 65,973 km (0.119 R)
• M2: 385,065 km (0.073 R)
• M3: 1,234,033 km (0.104 R)
• M4: 2,709,965 km (0.064 R)
• M5: 2,971,762 km (0.11 R)
• M6: 5,016,914 km (0.093 R)
• M7: 5,266,144 km (0.108 R)
• M8: 6,103,892 km (0.108 R)
• M9: 6,346,989 km (0.093 R)
• M10: 6,554,481 km (0.095 R)
• M11: 9,956,337 km (0.04 R)
• M12: 13,541,898 km (0.105 R)
• M13: 14,592,375 km (0.087 R)
• M14: 15,847,351 km (0.116 R)
• M15: 17,739,316 km (0.082 R)
• M16: 23,117,060 km (0.12 R)
• M17: 23,807,604 km (0.118 R)
• M18: 24,817,688 km (0.049 R)
• M19: 31,365,737 km (0.06 R)
• M20: 31,847,292 km (0.112 R)
• M21: 37,473,818 km (0.046 R)
• M22: 38,152,244 km (0.084 R)
• M23: 40,236,890 km (0.106 R)
• M24: 52,310,635 km (0.105 R)
• M25: 53,157,808 km (0.081 R)
• M26: 61,949,974 km (0.097 R)
• M27: 63,663,618 km (0.081 R)
• M28: 64,435,244 km (0.113 R)
• M29: 64,823,450 km (0.108 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 339 - 12,192 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit