🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.42

Radius: 0.71

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.56 AU - 0.74 AU

Year: 338 Days

Day: 41.1 Hours

Environment

Temp: -127 °C

Axial Tilt: 49.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 149.1

Radius: 12.7

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.55 AU - 0.83 AU

Year: 370 Days

Day: 8.2 Hours

Environment

Temp: -132 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 62,817,143 km

• M1: 157,975 km (0.075 R)
• M2: 661,671 km (0.064 R)
• M3: 1,210,995 km (0.1 R)
• M4: 1,811,929 km (0.066 R)
• M5: 2,218,237 km (0.05 R)
• M6: 2,718,642 km (0.109 R)
• M7: 3,165,641 km (0.042 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 495.6

Radius: 14.7

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2.44 AU - 2.54 AU

Year: 2537 Days

Day: 14.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 62,817,143 km

• M1: 182,809 km (0.117 R)
• M2: 691,142 km (0.082 R)
• M3: 1,437,935 km (0.071 R)
• M4: 2,264,762 km (0.109 R)
• M5: 2,722,980 km (0.117 R)
• M6: 3,276,493 km (0.043 R)
• M7: 4,249,178 km (0.117 R)
• M8: 4,718,616 km (0.111 R)
• M9: 5,787,792 km (0.057 R)
• M10: 8,373,292 km (0.111 R)
• M11: 9,419,131 km (0.102 R)
• M12: 10,809,643 km (0.118 R)
• M13: 11,770,510 km (0.107 R)
• M14: 13,382,278 km (0.086 R)
• M15: 14,627,231 km (0.039 R)
• M16: 15,948,180 km (0.03 R)
• M17: 17,193,582 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942.3

Radius: 8

Gravity: 14.72 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 3.95 AU - 4.65 AU

Year: 5757 Days

Day: 7.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 62,817,143 km

• M1: 99,483 km (0.038 R)
• M2: 608,115 km (0.115 R)
• M3: 881,431 km (0.086 R)
• M4: 1,293,872 km (0.113 R)
• M5: 1,571,226 km (0.025 R)
• M6: 1,830,480 km (0.043 R)
• M7: 2,282,116 km (0.068 R)
• M8: 2,844,903 km (0.079 R)
• M9: 3,212,465 km (0.108 R)
• M10: 4,375,439 km (0.029 R)
• M11: 6,321,707 km (0.1 R)
• M12: 9,125,470 km (0.073 R)
• M13: 12,186,542 km (0.039 R)
• M14: 17,897,889 km (0.063 R)
• M15: 20,090,844 km (0.06 R)
• M16: 26,832,772 km (0.065 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.2

Radius: 10.2

Gravity: 6.01 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 3.79 AU - 4.99 AU

Year: 5939 Days

Day: 12.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 62,817,143 km

• M1: 126,859 km (0.089 R)
• M2: 735,872 km (0.111 R)
• M3: 1,179,130 km (0.109 R)
• M4: 1,951,055 km (0.104 R)
• M5: 2,876,617 km (0.103 R)
• M6: 3,332,891 km (0.119 R)
• M7: 4,095,840 km (0.118 R)
• M8: 5,308,480 km (0.113 R)
• M9: 5,997,827 km (0.07 R)
• M10: 6,813,585 km (0.114 R)
• M11: 7,813,347 km (0.081 R)
• M12: 8,786,033 km (0.093 R)
• M13: 10,737,537 km (0.056 R)
• M14: 13,712,739 km (0.117 R)
• M15: 15,537,085 km (0.047 R)
• M16: 17,007,632 km (0.11 R)
• M17: 18,838,261 km (0.102 R)
• M18: 22,049,529 km (0.104 R)
• M19: 26,789,987 km (0.061 R)
• M20: 27,568,195 km (0.06 R)
• M21: 29,079,283 km (0.1 R)
• M22: 30,085,927 km (0.057 R)
• M23: 30,926,667 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175.6

Radius: 13.9

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 3.53 AU - 5.31 AU

Year: 6000 Days

Day: 6.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 62,817,143 km

• M1: 173,384 km (0.1 R)
• M2: 782,546 km (0.12 R)
• M3: 1,252,433 km (0.067 R)
• M4: 1,917,396 km (0.027 R)
• M5: 2,940,197 km (0.107 R)
• M6: 3,906,150 km (0.116 R)
• M7: 7,140,157 km (0.118 R)
• M8: 7,734,360 km (0.104 R)
• M9: 8,809,968 km (0.111 R)
• M10: 13,137,685 km (0.087 R)
• M11: 14,916,404 km (0.078 R)
• M12: 16,206,087 km (0.119 R)
• M13: 20,335,437 km (0.072 R)
• M14: 21,212,828 km (0.088 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 285.7

Radius: 7

Gravity: 5.83 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 6.37 AU - 7.01 AU

Year: 11173 Days

Day: 15.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 62,817,143 km

• M1: 89,908 km (0.088 R)
• M2: 625,618 km (0.062 R)
• M3: 887,115 km (0.078 R)
• M4: 1,482,216 km (0.027 R)
• M5: 2,004,462 km (0.028 R)
• M6: 2,334,325 km (0.082 R)
• M7: 4,056,047 km (0.086 R)
• M8: 4,503,494 km (0.05 R)
• M9: 5,718,079 km (0.118 R)
• M10: 6,664,286 km (0.086 R)
• M11: 7,026,163 km (0.095 R)
• M12: 7,554,992 km (0.052 R)
• M13: 8,397,377 km (0.085 R)
• M14: 8,691,636 km (0.088 R)
• M15: 9,167,956 km (0.088 R)
• M16: 10,799,769 km (0.113 R)
• M17: 11,503,777 km (0.101 R)
• M18: 14,387,426 km (0.109 R)
• M19: 15,301,319 km (0.09 R)
• M20: 15,740,688 km (0.088 R)
• M21: 17,720,017 km (0.101 R)
• M22: 19,933,617 km (0.103 R)
• M23: 22,809,038 km (0.093 R)
• M24: 23,300,018 km (0.066 R)
• M25: 24,218,399 km (0.117 R)
• M26: 25,949,695 km (0.085 R)
• M27: 26,305,589 km (0.079 R)
• M28: 28,604,310 km (0.075 R)
• M29: 30,734,883 km (0.073 R)
• M30: 31,333,872 km (0.062 R)
• M31: 34,446,107 km (0.113 R)
• M32: 34,984,060 km (0.085 R)
• M33: 37,644,509 km (0.083 R)
• M34: 38,445,157 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 546.4

Radius: 4.7

Gravity: 24.74 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 6.79 AU - 10.77 AU

Year: 16798 Days

Day: 21.8 Hours

Environment

Temp: -236 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 62,817,143 km

• M1: 58,642 km (0.12 R)
• M2: 219,759 km (0.079 R)
• M3: 394,789 km (0.109 R)
• M4: 926,011 km (0.048 R)
• M5: 1,480,869 km (0.038 R)
• M6: 1,769,892 km (0.056 R)
• M7: 2,313,830 km (0.052 R)
• M8: 2,503,371 km (0.111 R)
• M9: 2,726,272 km (0.113 R)
• M10: 3,263,178 km (0.047 R)
• M11: 3,955,667 km (0.114 R)
• M12: 4,674,933 km (0.106 R)
• M13: 5,013,473 km (0.106 R)
• M14: 6,127,379 km (0.102 R)
• M15: 6,615,966 km (0.058 R)
• M16: 8,285,927 km (0.086 R)
• M17: 9,243,952 km (0.055 R)
• M18: 11,742,236 km (0.097 R)
• M19: 15,380,456 km (0.092 R)
• M20: 20,945,347 km (0.107 R)
• M21: 21,400,723 km (0.11 R)
• M22: 23,288,349 km (0.103 R)
• M23: 27,716,895 km (0.107 R)
• M24: 33,658,623 km (0.069 R)
• M25: 37,388,846 km (0.096 R)
• M26: 38,193,533 km (0.057 R)
• M27: 40,115,866 km (0.102 R)
• M28: 45,505,279 km (0.074 R)
• M29: 46,885,319 km (0.086 R)
• M30: 48,768,756 km (0.103 R)
• M31: 58,406,150 km (0.076 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: 240 - 19,508 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit