🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.6

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.5 AU - 0.7 AU

Year: 300 Days

Day: 38.8 Hours

Environment

Temp: -135 °C

Axial Tilt: 23 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.47

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.49 AU - 0.75 AU

Year: 315 Days

Day: 33 Hours

Environment

Temp: -126 °C

Axial Tilt: 38.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 356.8

Radius: 8.5

Gravity: 4.94 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.65 AU - 0.75 AU

Year: 378 Days

Day: 14.1 Hours

Environment

Temp: -133 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 44,035,946 km

• M1: 105,766 km (0.114 R)
• M2: 375,042 km (0.047 R)
• M3: 642,074 km (0.105 R)
• M4: 1,021,454 km (0.093 R)
• M5: 1,307,934 km (0.114 R)
• M6: 1,622,987 km (0.102 R)
• M7: 2,409,124 km (0.1 R)
• M8: 3,268,863 km (0.107 R)
• M9: 4,306,923 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 777.6

Radius: 8.5

Gravity: 10.76 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.87 AU - 0.89 AU

Year: 533 Days

Day: 6.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 44,035,946 km

• M1: 105,766 km (0.062 R)
• M2: 384,766 km (0.112 R)
• M3: 668,104 km (0.076 R)
• M4: 1,132,605 km (0.078 R)
• M5: 1,397,693 km (0.089 R)
• M6: 2,048,144 km (0.111 R)
• M7: 2,377,559 km (0.084 R)
• M8: 3,168,034 km (0.043 R)
• M9: 3,637,472 km (0.069 R)
• M10: 4,138,027 km (0.066 R)
• M11: 4,496,613 km (0.105 R)
• M12: 5,380,138 km (0.052 R)
• M13: 6,277,725 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.6

Radius: 9.3

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.98 AU - 1.58 AU

Year: 935 Days

Day: 8.1 Hours

Environment

Temp: -164 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 44,035,946 km

• M1: 120,127 km (0.094 R)
• M2: 769,980 km (0.107 R)
• M3: 1,208,751 km (0.097 R)
• M4: 1,809,386 km (0.113 R)
• M5: 3,389,439 km (0.066 R)
• M6: 3,891,789 km (0.058 R)
• M7: 4,374,691 km (0.046 R)
• M8: 4,694,680 km (0.054 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 632.2

Radius: 11.5

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 2.14 AU - 2.78 AU

Year: 2491 Days

Day: 5.9 Hours

Environment

Temp: -201 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 44,035,946 km

• M1: 144,512 km (0.029 R)
• M2: 807,829 km (0.077 R)
• M3: 1,791,584 km (0.104 R)
• M4: 2,366,638 km (0.034 R)
• M5: 3,628,496 km (0.103 R)
• M6: 4,793,265 km (0.076 R)
• M7: 5,682,026 km (0.068 R)
• M8: 6,594,723 km (0.088 R)
• M9: 7,602,564 km (0.101 R)
• M10: 10,740,230 km (0.051 R)
• M11: 12,894,439 km (0.09 R)
• M12: 13,822,843 km (0.047 R)
• M13: 14,280,314 km (0.086 R)
• M14: 16,465,490 km (0.07 R)
• M15: 16,927,897 km (0.08 R)
• M16: 17,451,788 km (0.085 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 903.8

Radius: 12

Gravity: 6.28 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 4.85 AU - 6.49 AU

Year: 8717 Days

Day: 11.2 Hours

Environment

Temp: -210 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 44,035,946 km

• M1: 149,448 km (0.079 R)
• M2: 567,275 km (0.1 R)
• M3: 1,133,054 km (0.105 R)
• M4: 2,028,996 km (0.107 R)
• M5: 2,474,947 km (0.057 R)
• M6: 3,164,444 km (0.091 R)
• M7: 4,744,048 km (0.094 R)
• M8: 5,571,773 km (0.098 R)
• M9: 9,194,136 km (0.094 R)
• M10: 9,971,745 km (0.099 R)
• M11: 10,428,168 km (0.102 R)
• M12: 11,994,608 km (0.106 R)
• M13: 13,589,022 km (0.107 R)
• M14: 17,266,885 km (0.114 R)
• M15: 17,704,459 km (0.058 R)
• M16: 18,831,081 km (0.111 R)
• M17: 21,729,390 km (0.069 R)
• M18: 23,284,609 km (0.101 R)
• M19: 25,098,334 km (0.112 R)
• M20: 25,660,373 km (0.101 R)
• M21: 27,793,340 km (0.063 R)
• M22: 29,107,856 km (0.086 R)
• M23: 29,624,418 km (0.105 R)
• M24: 30,675,791 km (0.109 R)
• M25: 35,716,641 km (0.11 R)
• M26: 42,595,301 km (0.105 R)
• M27: 43,934,202 km (0.099 R)
• M28: 45,025,369 km (0.083 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 182

Radius: 13.6

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 4.94 AU - 7.02 AU

Year: 9442 Days

Day: 14.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 44,035,946 km

• M1: 169,345 km (0.098 R)
• M2: 602,730 km (0.104 R)
• M3: 1,477,279 km (0.12 R)
• M4: 1,945,371 km (0.119 R)
• M5: 2,546,605 km (0.092 R)
• M6: 3,491,913 km (0.084 R)
• M7: 4,057,842 km (0.111 R)
• M8: 5,237,571 km (0.114 R)
• M9: 6,666,979 km (0.03 R)
• M10: 8,267,377 km (0.113 R)
• M11: 9,856,405 km (0.084 R)
• M12: 10,993,349 km (0.065 R)
• M13: 13,012,023 km (0.117 R)
• M14: 14,930,167 km (0.059 R)
• M15: 16,191,426 km (0.101 R)
• M16: 17,460,615 km (0.076 R)
• M17: 18,795,028 km (0.075 R)
• M18: 22,611,419 km (0.07 R)
• M19: 26,096,002 km (0.087 R)
• M20: 28,522,629 km (0.093 R)
• M21: 29,042,781 km (0.087 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 507.1

Radius: 5.4

Gravity: 17.39 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 5.71 AU - 6.91 AU

Year: 10234 Days

Day: 16.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 44,035,946 km

• M1: 67,319 km (0.107 R)
• M2: 275,709 km (0.064 R)
• M3: 616,194 km (0.07 R)
• M4: 857,944 km (0.078 R)
• M5: 1,150,707 km (0.095 R)
• M6: 1,428,360 km (0.109 R)
• M7: 1,952,252 km (0.12 R)
• M8: 2,258,329 km (0.062 R)
• M9: 2,498,883 km (0.102 R)
• M10: 3,466,332 km (0.09 R)
• M11: 3,661,408 km (0.12 R)
• M12: 5,021,552 km (0.075 R)
• M13: 5,563,246 km (0.111 R)
• M14: 6,613,123 km (0.077 R)
• M15: 7,382,505 km (0.085 R)
• M16: 7,871,840 km (0.088 R)
• M17: 8,690,440 km (0.063 R)
• M18: 9,097,495 km (0.08 R)
• M19: 13,469,792 km (0.116 R)
• M20: 15,083,953 km (0.086 R)
• M21: 15,804,117 km (0.11 R)
• M22: 19,292,291 km (0.039 R)
• M23: 21,093,599 km (0.087 R)
• M24: 25,298,945 km (0.117 R)
• M25: 28,722,193 km (0.094 R)
• M26: 29,522,841 km (0.032 R)
• M27: 30,959,429 km (0.1 R)
• M28: 32,874,132 km (0.114 R)
• M29: 33,091,647 km (0.1 R)
• M30: 38,243,050 km (0.106 R)
• M31: 42,730,089 km (0.115 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: 191 - 13,800 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit