🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 552.8

Radius: 14.4

Gravity: 2.67 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.63 AU - 0.83 AU

Year: 403 Days

Day: 8.6 Hours

Environment

Temp: -132 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,482,641 km

• M1: 179,667 km (0.085 R)
• M2: 704,905 km (0.082 R)
• M3: 1,245,851 km (0.109 R)
• M4: 1,945,969 km (0.039 R)
• M5: 3,267,217 km (0.091 R)
• M6: 4,007,877 km (0.092 R)
• M7: 4,534,611 km (0.087 R)
• M8: 5,137,490 km (0.078 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.3

Radius: 8.1

Gravity: 6.76 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.82 AU - 0.88 AU

Year: 506 Days

Day: 12.7 Hours

Environment

Temp: -159 °C

Axial Tilt: 147.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,482,641 km

• M1: 101,278 km (0.088 R)
• M2: 416,181 km (0.114 R)
• M3: 875,148 km (0.096 R)
• M4: 2,171,563 km (0.091 R)
• M5: 3,263,328 km (0.058 R)
• M6: 4,028,222 km (0.116 R)
• M7: 4,439,018 km (0.116 R)
• M8: 5,045,188 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.5

Radius: 10.4

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.86 AU - 0.98 AU

Year: 570 Days

Day: 11.6 Hours

Environment

Temp: -148 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,482,641 km

• M1: 129,851 km (0.067 R)
• M2: 593,455 km (0.111 R)
• M3: 1,181,075 km (0.094 R)
• M4: 1,769,593 km (0.036 R)
• M5: 2,128,030 km (0.086 R)
• M6: 2,753,349 km (0.113 R)
• M7: 3,109,841 km (0.106 R)
• M8: 3,566,712 km (0.083 R)
• M9: 4,145,357 km (0.071 R)
• M10: 4,630,054 km (0.062 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 56.1

Radius: 11.5

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 1.11 AU - 1.23 AU

Year: 817 Days

Day: 5.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 52,482,641 km

• M1: 143,764 km (0.106 R)
• M2: 626,516 km (0.113 R)
• M3: 1,034,469 km (0.031 R)
• M4: 2,562,013 km (0.114 R)
• M5: 3,350,544 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 47

Radius: 11.8

Gravity: 0.34 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 1.23 AU - 1.43 AU

Year: 990 Days

Day: 10 Hours

Environment

Temp: -164 °C

Axial Tilt: 44.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 52,482,641 km

• M1: 146,756 km (0.048 R)
• M2: 817,552 km (0.099 R)
• M3: 1,234,482 km (0.117 R)
• M4: 3,323,915 km (0.12 R)
• M5: 4,115,886 km (0.05 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.2

Radius: 10.2

Gravity: 6.12 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 1.24 AU - 1.92 AU

Year: 1282 Days

Day: 13.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 52,482,641 km

• M1: 126,859 km (0.113 R)
• M2: 460,911 km (0.089 R)
• M3: 803,939 km (0.101 R)
• M4: 1,143,377 km (0.1 R)
• M5: 1,537,417 km (0.103 R)
• M6: 1,919,341 km (0.101 R)
• M7: 2,364,843 km (0.097 R)
• M8: 2,891,876 km (0.061 R)
• M9: 3,241,786 km (0.084 R)
• M10: 3,943,699 km (0.087 R)
• M11: 5,648,965 km (0.075 R)
• M12: 6,290,590 km (0.113 R)
• M13: 8,537,999 km (0.085 R)
• M14: 9,718,177 km (0.077 R)
• M15: 10,092,770 km (0.061 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377.3

Radius: 15

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 3.47 AU - 4.11 AU

Year: 4764 Days

Day: 10.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 52,482,641 km

• M1: 186,848 km (0.106 R)
• M2: 659,876 km (0.114 R)
• M3: 1,146,219 km (0.096 R)
• M4: 1,731,446 km (0.099 R)
• M5: 2,339,112 km (0.117 R)
• M6: 3,070,795 km (0.033 R)
• M7: 3,706,886 km (0.076 R)
• M8: 4,273,862 km (0.085 R)
• M9: 4,971,885 km (0.059 R)
• M10: 7,565,314 km (0.119 R)
• M11: 8,066,766 km (0.096 R)
• M12: 9,025,688 km (0.076 R)
• M13: 10,299,365 km (0.116 R)
• M14: 11,646,194 km (0.115 R)
• M15: 13,637,043 km (0.105 R)
• M16: 15,577,626 km (0.074 R)
• M17: 18,704,222 km (0.04 R)
• M18: 19,562,465 km (0.11 R)
• M19: 21,823,337 km (0.083 R)
• M20: 23,260,823 km (0.086 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 390.2

Radius: 14.7

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 4.53 AU - 4.67 AU

Year: 6370 Days

Day: 6.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 52,482,641 km

• M1: 182,958 km (0.094 R)
• M2: 667,506 km (0.062 R)
• M3: 1,167,911 km (0.051 R)
• M4: 2,507,111 km (0.112 R)
• M5: 2,973,108 km (0.06 R)
• M6: 3,497,449 km (0.091 R)
• M7: 4,199,212 km (0.117 R)
• M8: 4,863,277 km (0.113 R)
• M9: 6,156,401 km (0.086 R)
• M10: 6,883,896 km (0.092 R)
• M11: 9,133,848 km (0.041 R)
• M12: 10,470,205 km (0.077 R)
• M13: 10,958,642 km (0.107 R)
• M14: 15,206,923 km (0.062 R)
• M15: 17,821,445 km (0.095 R)
• M16: 18,842,450 km (0.106 R)
• M17: 19,969,670 km (0.112 R)
• M18: 20,446,738 km (0.098 R)
• M19: 26,047,532 km (0.1 R)
• M20: 26,946,765 km (0.039 R)
• M21: 28,206,379 km (0.066 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 900.6

Radius: 5.4

Gravity: 30.88 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 5.1 AU - 7.32 AU

Year: 9992 Days

Day: 21.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 52,482,641 km

• M1: 67,319 km (0.117 R)
• M2: 306,975 km (0.097 R)
• M3: 791,822 km (0.111 R)
• M4: 1,157,289 km (0.109 R)
• M5: 1,705,416 km (0.105 R)
• M6: 1,883,138 km (0.086 R)
• M7: 2,333,727 km (0.109 R)
• M8: 2,765,466 km (0.056 R)
• M9: 3,447,034 km (0.108 R)
• M10: 3,706,138 km (0.08 R)
• M11: 4,034,355 km (0.061 R)
• M12: 4,263,689 km (0.118 R)
• M13: 5,102,783 km (0.076 R)
• M14: 5,509,091 km (0.076 R)
• M15: 6,540,718 km (0.108 R)
• M16: 7,870,643 km (0.067 R)
• M17: 8,048,665 km (0.049 R)
• M18: 10,083,944 km (0.03 R)
• M19: 11,674,319 km (0.03 R)
• M20: 13,049,123 km (0.087 R)
• M21: 15,902,553 km (0.042 R)
• M22: 16,403,257 km (0.098 R)
• M23: 20,207,381 km (0.076 R)
• M24: 22,357,252 km (0.114 R)
• M25: 24,465,685 km (0.108 R)
• M26: 28,756,451 km (0.079 R)
• M27: 38,278,056 km (0.109 R)
• M28: 38,789,830 km (0.105 R)
• M29: 45,576,936 km (0.103 R)
• M30: 48,350,630 km (0.099 R)
• M31: 50,618,235 km (0.069 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 366 - 17,816 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit