🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 65.3

Radius: 11

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.59 AU - 0.61 AU

Year: 321 Days

Day: 9.9 Hours

Environment

Temp: -146 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 38,970,156 km

• M1: 136,732 km (0.117 R)
• M2: 502,948 km (0.109 R)
• M3: 970,441 km (0.101 R)
• M4: 1,559,707 km (0.097 R)
• M5: 1,926,222 km (0.082 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 560.5

Radius: 12.7

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.53 AU - 0.79 AU

Year: 370 Days

Day: 11.9 Hours

Environment

Temp: -145 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 38,970,156 km

• M1: 158,125 km (0.109 R)
• M2: 568,622 km (0.041 R)
• M3: 1,041,351 km (0.095 R)
• M4: 1,457,682 km (0.101 R)
• M5: 2,265,959 km (0.092 R)
• M6: 2,954,708 km (0.109 R)
• M7: 3,602,766 km (0.067 R)
• M8: 4,291,514 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 895.4

Radius: 13.1

Gravity: 5.22 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.09 AU - 1.53 AU

Year: 1035 Days

Day: 11.8 Hours

Environment

Temp: -187 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 38,970,156 km

• M1: 162,912 km (0.085 R)
• M2: 602,730 km (0.113 R)
• M3: 1,159,832 km (0.082 R)
• M4: 1,691,653 km (0.114 R)
• M5: 2,305,752 km (0.038 R)
• M6: 2,890,530 km (0.068 R)
• M7: 3,467,379 km (0.098 R)
• M8: 4,722,506 km (0.093 R)
• M9: 5,222,312 km (0.119 R)
• M10: 5,821,302 km (0.06 R)
• M11: 6,699,142 km (0.097 R)
• M12: 7,585,809 km (0.083 R)
• M13: 8,004,533 km (0.043 R)
• M14: 8,717,816 km (0.101 R)
• M15: 10,752,197 km (0.059 R)
• M16: 11,214,455 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 594

Radius: 13.5

Gravity: 3.26 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.09 AU - 1.81 AU

Year: 1205 Days

Day: 13.4 Hours

Environment

Temp: -189 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 38,970,156 km

• M1: 169,046 km (0.115 R)
• M2: 595,848 km (0.106 R)
• M3: 1,029,084 km (0.096 R)
• M4: 1,557,463 km (0.09 R)
• M5: 2,005,509 km (0.056 R)
• M6: 3,591,396 km (0.087 R)
• M7: 4,728,340 km (0.1 R)
• M8: 5,876,803 km (0.109 R)
• M9: 7,228,120 km (0.053 R)
• M10: 10,955,950 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 151.5

Radius: 12.4

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 2.79 AU - 3.63 AU

Year: 3970 Days

Day: 7.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 38,970,156 km

• M1: 154,235 km (0.105 R)
• M2: 1,004,849 km (0.105 R)
• M3: 1,643,632 km (0.064 R)
• M4: 2,906,088 km (0.068 R)
• M5: 5,072,116 km (0.117 R)
• M6: 6,906,186 km (0.03 R)
• M7: 8,062,128 km (0.113 R)
• M8: 11,418,357 km (0.119 R)
• M9: 12,826,521 km (0.071 R)
• M10: 13,530,379 km (0.112 R)
• M11: 14,347,333 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 381.3

Radius: 14.5

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 2.79 AU - 3.89 AU

Year: 4213 Days

Day: 13.1 Hours

Environment

Temp: -211 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 38,970,156 km

• M1: 180,265 km (0.084 R)
• M2: 642,523 km (0.097 R)
• M3: 1,098,647 km (0.111 R)
• M4: 1,629,719 km (0.112 R)
• M5: 2,250,850 km (0.102 R)
• M6: 3,147,838 km (0.045 R)
• M7: 3,758,048 km (0.089 R)
• M8: 5,047,731 km (0.111 R)
• M9: 5,546,640 km (0.112 R)
• M10: 6,133,363 km (0.114 R)
• M11: 6,880,305 km (0.04 R)
• M12: 7,527,316 km (0.051 R)
• M13: 8,487,286 km (0.106 R)
• M14: 9,342,387 km (0.105 R)
• M15: 13,254,671 km (0.112 R)
• M16: 14,854,919 km (0.109 R)
• M17: 15,519,433 km (0.049 R)
• M18: 16,150,586 km (0.082 R)
• M19: 17,351,857 km (0.074 R)
• M20: 18,262,459 km (0.102 R)
• M21: 18,847,537 km (0.112 R)
• M22: 20,241,041 km (0.041 R)
• M23: 21,378,733 km (0.072 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 69.8

Radius: 8.2

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 3.83 AU - 4.19 AU

Year: 5543 Days

Day: 10.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 38,970,156 km

• M1: 102,026 km (0.08 R)
• M2: 767,587 km (0.112 R)
• M3: 1,345,633 km (0.091 R)
• M4: 1,679,834 km (0.058 R)
• M5: 2,667,180 km (0.113 R)
• M6: 3,643,606 km (0.072 R)
• M7: 4,840,837 km (0.052 R)
• M8: 5,796,319 km (0.118 R)
• M9: 6,585,298 km (0.088 R)
• M10: 6,978,890 km (0.068 R)
• M11: 8,806,228 km (0.075 R)
• M12: 9,219,567 km (0.054 R)
• M13: 10,967,768 km (0.093 R)
• M14: 13,711,991 km (0.058 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 369.1

Radius: 14

Gravity: 1.88 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 3.95 AU - 5.13 AU

Year: 6677 Days

Day: 10.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 38,970,156 km

• M1: 174,132 km (0.079 R)
• M2: 803,789 km (0.096 R)
• M3: 1,317,957 km (0.088 R)
• M4: 2,141,942 km (0.092 R)
• M5: 2,784,615 km (0.1 R)
• M6: 3,269,312 km (0.118 R)
• M7: 3,899,268 km (0.105 R)
• M8: 4,436,325 km (0.091 R)
• M9: 5,265,845 km (0.095 R)
• M10: 6,734,148 km (0.043 R)
• M11: 9,821,250 km (0.068 R)
• M12: 11,184,984 km (0.102 R)
• M13: 11,840,821 km (0.093 R)
• M14: 12,522,090 km (0.062 R)
• M15: 13,751,036 km (0.115 R)
• M16: 17,794,816 km (0.074 R)
• M17: 18,950,609 km (0.057 R)
• M18: 20,087,703 km (0.052 R)
• M19: 20,707,786 km (0.114 R)
• M20: 26,960,528 km (0.065 R)
• M21: 28,743,884 km (0.078 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 126.7

Radius: 5.7

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 6.78 AU - 10.18 AU

Year: 17045 Days

Day: 17.4 Hours

Environment

Temp: -236 °C

Axial Tilt: 123.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 38,970,156 km

• M1: 119,828 km (0.046 R)
• M2: 301,589 km (0.102 R)
• M3: 2,343,002 km (0.118 R)
• M4: 3,639,267 km (0.082 R)
• M5: 4,058,141 km (0.113 R)
• M6: 5,446,260 km (0.098 R)
• M7: 6,298,818 km (0.092 R)
• M8: 6,938,948 km (0.093 R)
• M9: 7,898,618 km (0.108 R)
• M10: 13,701,220 km (0.049 R)
• M11: 16,679,265 km (0.064 R)
• M12: 20,820,284 km (0.1 R)
• M13: 21,284,187 km (0.097 R)
• M14: 22,962,376 km (0.081 R)
• M15: 24,554,994 km (0.073 R)
• M16: 26,579,652 km (0.088 R)
• M17: 29,095,290 km (0.028 R)
• M18: 29,384,313 km (0.113 R)
• M19: 31,258,924 km (0.084 R)
• M20: 33,527,576 km (0.118 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 331 - 12,553 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit