🌌 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: 3.08

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.52 AU - 0.52 AU

Year: 246 Days

Day: 38.8 Hours

Environment

Temp: -120 °C

Axial Tilt: 22.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.76

Radius: 1.25

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.48 AU - 0.74 AU

Year: 313 Days

Day: 26.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 12.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,856,036 km

• M1: 42,486 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 271.4

Radius: 8.3

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.64 AU - 0.76 AU

Year: 384 Days

Day: 10.4 Hours

Environment

Temp: -142 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 64,856,036 km

• M1: 103,223 km (0.062 R)
• M2: 368,460 km (0.118 R)
• M3: 630,405 km (0.106 R)
• M4: 917,633 km (0.077 R)
• M5: 1,358,498 km (0.11 R)
• M6: 1,647,521 km (0.099 R)
• M7: 1,935,198 km (0.114 R)
• M8: 2,434,406 km (0.03 R)
• M9: 2,692,612 km (0.103 R)
• M10: 3,504,629 km (0.055 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 570.4

Radius: 9.3

Gravity: 6.59 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.66 AU - 0.9 AU

Year: 452 Days

Day: 11.4 Hours

Environment

Temp: -147 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 64,856,036 km

• M1: 115,639 km (0.115 R)
• M2: 443,109 km (0.073 R)
• M3: 945,459 km (0.102 R)
• M4: 1,255,276 km (0.112 R)
• M5: 1,741,918 km (0.1 R)
• M6: 2,079,859 km (0.092 R)
• M7: 2,461,633 km (0.088 R)
• M8: 2,765,616 km (0.092 R)
• M9: 3,083,661 km (0.046 R)
• M10: 3,533,950 km (0.073 R)
• M11: 3,832,548 km (0.094 R)
• M12: 4,188,591 km (0.028 R)
• M13: 4,831,263 km (0.037 R)
• M14: 5,489,195 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 247.4

Radius: 9.3

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1.7 AU - 1.96 AU

Year: 1624 Days

Day: 6.9 Hours

Environment

Temp: -184 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 64,856,036 km

• M1: 115,639 km (0.086 R)
• M2: 506,987 km (0.082 R)
• M3: 1,055,712 km (0.079 R)
• M4: 1,440,328 km (0.111 R)
• M5: 1,768,696 km (0.064 R)
• M6: 2,603,601 km (0.079 R)
• M7: 3,316,136 km (0.09 R)
• M8: 4,542,689 km (0.072 R)
• M9: 4,846,073 km (0.091 R)
• M10: 5,220,218 km (0.034 R)
• M11: 5,513,579 km (0.071 R)
• M12: 7,102,159 km (0.117 R)
• M13: 7,438,605 km (0.081 R)
• M14: 8,539,046 km (0.108 R)
• M15: 9,454,735 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 715.9

Radius: 12.4

Gravity: 4.66 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 2.86 AU - 2.96 AU

Year: 3256 Days

Day: 14.9 Hours

Environment

Temp: -193 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 64,856,036 km

• M1: 181,462 km (0.07 R)
• M2: 650,900 km (0.106 R)
• M3: 1,045,240 km (0.064 R)
• M4: 1,824,496 km (0.116 R)
• M5: 2,337,018 km (0.106 R)
• M6: 2,844,903 km (0.113 R)
• M7: 3,795,597 km (0.079 R)
• M8: 4,345,220 km (0.096 R)
• M9: 6,819,269 km (0.115 R)
• M10: 8,032,358 km (0.062 R)
• M11: 10,676,800 km (0.117 R)
• M12: 11,259,633 km (0.112 R)
• M13: 11,819,877 km (0.066 R)
• M14: 12,489,328 km (0.074 R)
• M15: 14,398,496 km (0.106 R)
• M16: 16,826,469 km (0.117 R)
• M17: 17,962,815 km (0.118 R)
• M18: 21,416,880 km (0.111 R)
• M19: 21,877,641 km (0.113 R)
• M20: 22,819,061 km (0.054 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 148.6

Radius: 11.7

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 4.32 AU - 4.36 AU

Year: 5931 Days

Day: 6 Hours

Environment

Temp: -223 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 64,856,036 km

• M1: 145,708 km (0.05 R)
• M2: 960,119 km (0.058 R)
• M3: 1,333,665 km (0.072 R)
• M4: 2,188,168 km (0.111 R)
• M5: 3,184,939 km (0.08 R)
• M6: 4,023,285 km (0.048 R)
• M7: 4,615,693 km (0.081 R)
• M8: 5,338,550 km (0.042 R)
• M9: 6,326,195 km (0.109 R)
• M10: 6,776,784 km (0.085 R)
• M11: 7,400,906 km (0.087 R)
• M12: 8,695,675 km (0.081 R)
• M13: 9,253,825 km (0.093 R)
• M14: 12,629,950 km (0.119 R)
• M15: 13,119,883 km (0.111 R)
• M16: 13,622,382 km (0.071 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 869.5

Radius: 12.9

Gravity: 5.23 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 4.32 AU - 5.84 AU

Year: 7511 Days

Day: 6.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 64,856,036 km

• M1: 160,369 km (0.053 R)
• M2: 647,011 km (0.087 R)
• M3: 1,048,980 km (0.082 R)
• M4: 1,668,016 km (0.104 R)
• M5: 2,579,516 km (0.083 R)
• M6: 3,258,391 km (0.072 R)
• M7: 4,158,372 km (0.088 R)
• M8: 4,681,665 km (0.036 R)
• M9: 5,405,270 km (0.043 R)
• M10: 5,996,032 km (0.113 R)
• M11: 11,412,822 km (0.118 R)
• M12: 12,166,196 km (0.093 R)
• M13: 13,475,926 km (0.036 R)
• M14: 13,952,844 km (0.058 R)
• M15: 15,974,509 km (0.087 R)
• M16: 17,969,098 km (0.104 R)
• M17: 18,915,155 km (0.094 R)
• M18: 21,144,911 km (0.057 R)
• M19: 22,614,261 km (0.089 R)
• M20: 23,459,340 km (0.088 R)
• M21: 25,573,457 km (0.109 R)
• M22: 26,770,240 km (0.113 R)
• M23: 28,683,896 km (0.08 R)
• M24: 30,279,357 km (0.083 R)
• M25: 31,098,854 km (0.073 R)
• M26: 33,212,373 km (0.056 R)
• M27: 35,759,426 km (0.105 R)
• M28: 38,553,316 km (0.073 R)
• M29: 40,494,797 km (0.051 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 325.5

Radius: 3.9

Gravity: 21.4 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 9.55 AU - 11.77 AU

Year: 22832 Days

Day: 15.3 Hours

Environment

Temp: -235 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 64,856,036 km

• M1: 52,658 km (0.08 R)
• M2: 211,531 km (0.092 R)
• M3: 361,279 km (0.083 R)
• M4: 922,121 km (0.093 R)
• M5: 1,073,365 km (0.105 R)
• M6: 1,596,658 km (0.076 R)
• M7: 2,733,003 km (0.104 R)
• M8: 3,097,424 km (0.083 R)
• M9: 6,522,617 km (0.085 R)
• M10: 8,100,874 km (0.098 R)
• M11: 9,319,648 km (0.111 R)
• M12: 10,772,094 km (0.081 R)
• M13: 13,223,704 km (0.031 R)
• M14: 27,939,646 km (0.088 R)
• M15: 32,488,918 km (0.071 R)
• M16: 37,507,926 km (0.119 R)
• M17: 38,597,597 km (0.104 R)
• M18: 40,271,298 km (0.114 R)
• M19: 40,839,770 km (0.114 R)
• M20: 47,767,199 km (0.041 R)
• M21: 55,788,487 km (0.105 R)
• M22: 64,856,062 km (0.092 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 359 - 13,235 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit