🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.62

Radius: 1.21

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.5 AU - 0.54 AU

Year: 246 Days

Day: 18.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 31 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 42,175,651 km

• M1: 74,500 km (0.108 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.06

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.55 AU - 0.63 AU

Year: 297 Days

Day: 38.3 Hours

Environment

Temp: -125 °C

Axial Tilt: 158.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 643.4

Radius: 10.9

Gravity: 5.42 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.74 AU - 0.96 AU

Year: 514 Days

Day: 11.2 Hours

Environment

Temp: -146 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 42,175,651 km

• M1: 136,134 km (0.067 R)
• M2: 503,846 km (0.097 R)
• M3: 1,401,283 km (0.103 R)
• M4: 2,169,169 km (0.1 R)
• M5: 2,547,203 km (0.1 R)
• M6: 3,664,998 km (0.107 R)
• M7: 4,940,021 km (0.117 R)
• M8: 6,134,859 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 333.4

Radius: 8.1

Gravity: 5.08 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.79 AU - 1.09 AU

Year: 598 Days

Day: 11.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,175,651 km

• M1: 100,979 km (0.065 R)
• M2: 362,775 km (0.027 R)
• M3: 800,349 km (0.04 R)
• M4: 1,463,815 km (0.11 R)
• M5: 1,937,292 km (0.093 R)
• M6: 2,414,659 km (0.089 R)
• M7: 2,676,605 km (0.12 R)
• M8: 3,422,051 km (0.103 R)
• M9: 4,107,210 km (0.098 R)
• M10: 4,896,039 km (0.035 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.1

Radius: 11.5

Gravity: 2.18 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 1.02 AU - 1.1 AU

Year: 716 Days

Day: 11.9 Hours

Environment

Temp: -171 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,175,651 km

• M1: 143,165 km (0.102 R)
• M2: 709,094 km (0.108 R)
• M3: 1,177,036 km (0.091 R)
• M4: 2,121,597 km (0.042 R)
• M5: 2,829,943 km (0.119 R)
• M6: 3,639,417 km (0.107 R)
• M7: 4,350,156 km (0.104 R)
• M8: 4,899,480 km (0.094 R)
• M9: 5,494,730 km (0.12 R)
• M10: 6,083,697 km (0.053 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 95.4

Radius: 8.1

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.47 AU - 2.43 AU

Year: 1786 Days

Day: 6.4 Hours

Environment

Temp: -180 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,175,651 km

• M1: 100,679 km (0.096 R)
• M2: 401,221 km (0.084 R)
• M3: 1,010,384 km (0.115 R)
• M4: 1,603,091 km (0.074 R)
• M5: 1,936,993 km (0.081 R)
• M6: 2,207,765 km (0.102 R)
• M7: 2,634,269 km (0.064 R)
• M8: 3,542,926 km (0.094 R)
• M9: 4,174,379 km (0.085 R)
• M10: 5,101,138 km (0.079 R)
• M11: 5,944,122 km (0.072 R)
• M12: 6,399,049 km (0.098 R)
• M13: 7,513,104 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 337.5

Radius: 8.4

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.99 AU - 2.07 AU

Year: 1897 Days

Day: 7.6 Hours

Environment

Temp: -188 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 42,175,651 km

• M1: 104,419 km (0.118 R)
• M2: 367,861 km (0.053 R)
• M3: 1,167,611 km (0.106 R)
• M4: 1,458,280 km (0.037 R)
• M5: 2,316,523 km (0.114 R)
• M6: 2,768,608 km (0.117 R)
• M7: 3,635,976 km (0.061 R)
• M8: 4,194,425 km (0.049 R)
• M9: 4,522,493 km (0.078 R)
• M10: 4,828,421 km (0.07 R)
• M11: 5,230,241 km (0.114 R)
• M12: 6,309,589 km (0.115 R)
• M13: 6,914,264 km (0.1 R)
• M14: 7,399,410 km (0.097 R)
• M15: 8,696,872 km (0.077 R)
• M16: 9,445,759 km (0.092 R)
• M17: 12,500,548 km (0.104 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 666.8

Radius: 13.7

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 1.89 AU - 2.43 AU

Year: 2083 Days

Day: 8.5 Hours

Environment

Temp: -192 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 42,175,651 km

• M1: 175,329 km (0.077 R)
• M2: 763,996 km (0.092 R)
• M3: 1,587,233 km (0.105 R)
• M4: 2,918,804 km (0.112 R)
• M5: 3,393,628 km (0.038 R)
• M6: 4,665,359 km (0.107 R)
• M7: 5,364,729 km (0.113 R)
• M8: 6,439,740 km (0.027 R)
• M9: 7,308,305 km (0.116 R)
• M10: 7,860,171 km (0.071 R)
• M11: 10,641,345 km (0.106 R)
• M12: 11,237,343 km (0.111 R)
• M13: 12,415,127 km (0.095 R)
• M14: 13,287,432 km (0.111 R)
• M15: 14,923,584 km (0.081 R)
• M16: 15,434,910 km (0.11 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 415.6

Radius: 12.9

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 1.88 AU - 2.72 AU

Year: 2288 Days

Day: 8.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 42,175,651 km

• M1: 160,519 km (0.117 R)
• M2: 561,890 km (0.101 R)
• M3: 1,158,187 km (0.082 R)
• M4: 1,651,261 km (0.076 R)
• M5: 2,152,863 km (0.072 R)
• M6: 2,565,304 km (0.031 R)
• M7: 3,091,141 km (0.113 R)
• M8: 3,845,114 km (0.096 R)
• M9: 4,597,591 km (0.079 R)
• M10: 5,837,159 km (0.092 R)
• M11: 6,911,422 km (0.084 R)
• M12: 7,315,785 km (0.108 R)
• M13: 8,231,922 km (0.111 R)
• M14: 9,450,097 km (0.089 R)
• M15: 9,983,414 km (0.033 R)
• M16: 11,110,335 km (0.099 R)
• M17: 12,997,961 km (0.116 R)
• M18: 14,039,461 km (0.093 R)

Planet 10 - Gas Giant

Semi-Major Axis: 5.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 624.1

Radius: 13.5

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 5.41 AU - 5.75 AU

Year: 8647 Days

Day: 6.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 42,175,651 km

• M1: 167,849 km (0.079 R)
• M2: 720,015 km (0.105 R)
• M3: 1,160,879 km (0.084 R)
• M4: 1,596,658 km (0.093 R)
• M5: 2,095,268 km (0.036 R)
• M6: 3,697,760 km (0.056 R)
• M7: 4,203,700 km (0.091 R)
• M8: 4,901,275 km (0.1 R)
• M9: 5,513,878 km (0.101 R)
• M10: 7,624,405 km (0.047 R)
• M11: 8,237,607 km (0.086 R)
• M12: 9,016,563 km (0.116 R)
• M13: 13,729,195 km (0.04 R)
• M14: 14,638,451 km (0.116 R)
• M15: 16,847,712 km (0.065 R)
• M16: 18,103,437 km (0.089 R)
• M17: 24,014,198 km (0.032 R)
• M18: 24,536,295 km (0.088 R)
• M19: 25,333,801 km (0.049 R)
• M20: 25,874,897 km (0.087 R)
• M21: 27,734,847 km (0.095 R)
• M22: 28,406,392 km (0.104 R)
• M23: 28,892,734 km (0.107 R)
• M24: 32,985,582 km (0.098 R)
• M25: 34,505,048 km (0.029 R)
• M26: 39,584,345 km (0.104 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: 270 - 14,997 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit