🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.84

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.53 AU - 0.73 AU

Year: 328 Days

Day: 27.6 Hours

Environment

Temp: -138 °C

Axial Tilt: 39 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,676,344 km

• M1: 52,808 km (0.112 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 612.4

Radius: 11.5

Gravity: 4.63 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.56 AU - 0.84 AU

Year: 384 Days

Day: 11.4 Hours

Environment

Temp: -143 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 53,676,344 km

• M1: 147,504 km (0.116 R)
• M2: 546,780 km (0.07 R)
• M3: 993,928 km (0.075 R)
• M4: 1,409,810 km (0.047 R)
• M5: 2,791,197 km (0.087 R)
• M6: 3,748,623 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 798.8

Radius: 10.2

Gravity: 7.68 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.59 AU - 0.95 AU

Year: 443 Days

Day: 12.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 53,676,344 km

• M1: 128,056 km (0.102 R)
• M2: 626,067 km (0.076 R)
• M3: 962,812 km (0.064 R)
• M4: 1,297,911 km (0.116 R)
• M5: 1,638,545 km (0.114 R)
• M6: 2,196,546 km (0.047 R)
• M7: 2,535,684 km (0.067 R)
• M8: 3,429,830 km (0.045 R)
• M9: 4,731,781 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 988.1

Radius: 8.3

Gravity: 14.34 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.68 AU - 1.08 AU

Year: 542 Days

Day: 10.2 Hours

Environment

Temp: -154 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,676,344 km

• M1: 103,223 km (0.104 R)
• M2: 393,442 km (0.041 R)
• M3: 686,205 km (0.084 R)
• M4: 1,135,897 km (0.099 R)
• M5: 1,446,462 km (0.06 R)
• M6: 1,763,609 km (0.076 R)
• M7: 2,272,392 km (0.119 R)
• M8: 2,572,485 km (0.118 R)
• M9: 4,445,301 km (0.065 R)
• M10: 4,734,623 km (0.081 R)
• M11: 6,001,268 km (0.111 R)
• M12: 7,570,101 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 424.9

Radius: 14.9

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1 AU - 1.24 AU

Year: 778 Days

Day: 6.8 Hours

Environment

Temp: -164 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 53,676,344 km

• M1: 186,698 km (0.096 R)
• M2: 746,643 km (0.117 R)
• M3: 1,481,169 km (0.111 R)
• M4: 1,949,709 km (0.102 R)
• M5: 2,438,595 km (0.078 R)
• M6: 3,057,032 km (0.102 R)
• M7: 3,779,291 km (0.116 R)
• M8: 4,474,024 km (0.085 R)
• M9: 5,657,642 km (0.099 R)
• M10: 7,360,365 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 684

Radius: 12

Gravity: 4.75 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.96 AU - 1.46 AU

Year: 873 Days

Day: 9.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 164.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 53,676,344 km

• M1: 149,299 km (0.088 R)
• M2: 550,520 km (0.107 R)
• M3: 1,125,126 km (0.092 R)
• M4: 1,761,515 km (0.112 R)
• M5: 2,769,057 km (0.101 R)
• M6: 3,498,795 km (0.12 R)
• M7: 4,158,970 km (0.085 R)
• M8: 4,724,750 km (0.111 R)
• M9: 7,073,436 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.5

Radius: 12

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 1.15 AU - 1.47 AU

Year: 984 Days

Day: 12.5 Hours

Environment

Temp: -177 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 53,676,344 km

• M1: 149,299 km (0.09 R)
• M2: 622,028 km (0.069 R)
• M3: 1,021,454 km (0.085 R)
• M4: 1,656,497 km (0.099 R)
• M5: 2,199,687 km (0.083 R)
• M6: 2,588,043 km (0.108 R)
• M7: 3,533,801 km (0.097 R)
• M8: 4,278,499 km (0.117 R)
• M9: 5,855,859 km (0.08 R)
• M10: 6,437,944 km (0.042 R)
• M11: 7,126,992 km (0.046 R)
• M12: 8,470,231 km (0.095 R)
• M13: 9,270,580 km (0.082 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 503.8

Radius: 10.9

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 3.58 AU - 5.82 AU

Year: 6684 Days

Day: 10.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 53,676,344 km

• M1: 135,536 km (0.074 R)
• M2: 536,308 km (0.101 R)
• M3: 1,079,349 km (0.096 R)
• M4: 1,584,541 km (0.055 R)
• M5: 3,117,320 km (0.067 R)
• M6: 4,661,320 km (0.105 R)
• M7: 5,468,101 km (0.085 R)
• M8: 7,948,434 km (0.107 R)
• M9: 8,730,532 km (0.119 R)
• M10: 12,227,083 km (0.063 R)
• M11: 12,950,388 km (0.107 R)
• M12: 13,701,819 km (0.119 R)
• M13: 15,768,064 km (0.07 R)
• M14: 20,437,164 km (0.083 R)
• M15: 25,619,832 km (0.105 R)
• M16: 26,632,311 km (0.074 R)
• M17: 30,480,117 km (0.033 R)
• M18: 31,425,426 km (0.072 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 979

Radius: 7.8

Gravity: 16.09 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 5.5 AU - 8.36 AU

Year: 11968 Days

Day: 25 Hours

Environment

Temp: -231 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 53,676,344 km

• M1: 97,089 km (0.078 R)
• M2: 406,158 km (0.116 R)
• M3: 836,252 km (0.114 R)
• M4: 1,430,904 km (0.112 R)
• M5: 1,924,726 km (0.113 R)
• M6: 2,422,588 km (0.092 R)
• M7: 4,015,057 km (0.114 R)
• M8: 6,901,399 km (0.105 R)
• M9: 7,422,298 km (0.118 R)
• M10: 8,204,845 km (0.057 R)
• M11: 8,542,637 km (0.114 R)
• M12: 13,889,265 km (0.049 R)
• M13: 16,025,821 km (0.072 R)
• M14: 19,627,689 km (0.092 R)
• M15: 21,570,517 km (0.1 R)
• M16: 24,819,932 km (0.103 R)
• M17: 25,425,355 km (0.042 R)
• M18: 33,233,765 km (0.061 R)
• M19: 38,881,085 km (0.025 R)
• M20: 45,435,416 km (0.061 R)
• M21: 47,722,170 km (0.071 R)
• M22: 51,375,948 km (0.09 R)
• M23: 56,937,847 km (0.072 R)
• M24: 58,699,362 km (0.097 R)
• M25: 59,234,773 km (0.052 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 316

Radius: 7.9

Gravity: 5.06 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 8.52 AU - 9.3 AU

Year: 17447 Days

Day: 17.1 Hours

Environment

Temp: -227 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 53,676,344 km

• M1: 171,589 km (0.062 R)
• M2: 495,468 km (0.045 R)
• M3: 784,790 km (0.092 R)
• M4: 1,261,858 km (0.092 R)
• M5: 2,455,051 km (0.075 R)
• M6: 3,014,995 km (0.057 R)
• M7: 6,636,012 km (0.107 R)
• M8: 8,915,435 km (0.12 R)
• M9: 10,990,507 km (0.087 R)
• M10: 14,812,134 km (0.091 R)
• M11: 20,685,197 km (0.094 R)
• M12: 21,721,461 km (0.118 R)
• M13: 28,889,443 km (0.096 R)
• M14: 33,118,126 km (0.114 R)
• M15: 42,778,409 km (0.096 R)
• M16: 45,745,234 km (0.068 R)
• M17: 50,680,019 km (0.11 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 527 - 19,058 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit