🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.56

Radius: 1.19

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.43 AU - 0.65 AU

Year: 141 Days

Day: 12.1 Hours

Environment

Temp: 263 °C

Axial Tilt: 49.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.44 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.08

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.2 AU - 1.68 AU

Year: 613 Days

Day: 43.2 Hours

Environment

Temp: -3 °C

Axial Tilt: 37.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 63,438,353 km

• M1: 115,938 km (0.079 R)
• M2: 218,263 km (0.074 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.51 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.15

Radius: 1.06

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.32 AU - 1.7 AU

Year: 658 Days

Day: 46.5 Hours

Environment

Temp: -16 °C

Axial Tilt: 27.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 63,438,353 km

• M1: 223,948 km (0.034 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.08

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.45 AU - 1.65 AU

Year: 685 Days

Day: 44.7 Hours

Environment

Temp: -22 °C

Axial Tilt: 33.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,438,353 km

• M1: 247,285 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 11.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 300.7

Radius: 12.5

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 10.22 AU - 12.16 AU

Year: 13280 Days

Day: 9.2 Hours

Environment

Temp: -185 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 63,438,353 km

• M1: 155,582 km (0.096 R)
• M2: 648,357 km (0.116 R)
• M3: 1,159,982 km (0.114 R)
• M4: 1,863,989 km (0.107 R)
• M5: 3,715,862 km (0.096 R)
• M6: 5,904,927 km (0.117 R)
• M7: 7,023,022 km (0.06 R)
• M8: 8,320,185 km (0.098 R)
• M9: 8,801,142 km (0.072 R)
• M10: 11,069,494 km (0.112 R)
• M11: 12,536,152 km (0.085 R)
• M12: 13,884,478 km (0.083 R)
• M13: 22,441,925 km (0.095 R)
• M14: 29,435,176 km (0.048 R)
• M15: 31,072,824 km (0.095 R)
• M16: 36,581,915 km (0.058 R)
• M17: 39,443,872 km (0.09 R)
• M18: 40,804,166 km (0.041 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 74.1

Radius: 11.5

Gravity: 0.56 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 9.13 AU - 13.59 AU

Year: 13583 Days

Day: 6.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 49.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 63,438,353 km

• M1: 143,016 km (0.045 R)
• M2: 685,457 km (0.104 R)
• M3: 1,834,668 km (0.101 R)
• M4: 4,754,520 km (0.09 R)
• M5: 5,331,369 km (0.073 R)
• M6: 6,720,984 km (0.106 R)
• M7: 7,278,834 km (0.078 R)
• M8: 9,338,198 km (0.118 R)
• M9: 12,915,831 km (0.099 R)
• M10: 15,963,290 km (0.099 R)
• M11: 19,591,786 km (0.099 R)
• M12: 20,868,604 km (0.113 R)
• M13: 21,562,588 km (0.084 R)

Planet 7 - Gas Giant

Semi-Major Axis: 11.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 945.8

Radius: 12

Gravity: 6.57 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 11.6 AU - 11.98 AU

Year: 14362 Days

Day: 12.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 63,438,353 km

• M1: 169,644 km (0.098 R)
• M2: 606,919 km (0.095 R)
• M3: 1,785,600 km (0.09 R)
• M4: 2,585,500 km (0.078 R)
• M5: 3,182,246 km (0.053 R)
• M6: 4,787,581 km (0.1 R)
• M7: 5,577,009 km (0.051 R)
• M8: 6,123,190 km (0.057 R)
• M9: 6,535,183 km (0.086 R)
• M10: 7,835,637 km (0.107 R)
• M11: 10,299,365 km (0.118 R)
• M12: 11,305,709 km (0.046 R)
• M13: 14,501,718 km (0.061 R)
• M14: 15,161,744 km (0.104 R)
• M15: 19,199,989 km (0.096 R)
• M16: 19,817,230 km (0.057 R)
• M17: 20,814,001 km (0.03 R)
• M18: 21,278,053 km (0.037 R)
• M19: 22,516,873 km (0.04 R)
• M20: 25,137,977 km (0.052 R)
• M21: 28,521,283 km (0.049 R)
• M22: 30,738,772 km (0.104 R)
• M23: 35,251,392 km (0.099 R)
• M24: 36,177,403 km (0.102 R)
• M25: 36,713,711 km (0.104 R)
• M26: 38,078,044 km (0.113 R)
• M27: 39,475,737 km (0.105 R)
• M28: 40,187,224 km (0.078 R)
• M29: 45,565,417 km (0.098 R)
• M30: 46,034,257 km (0.084 R)
• M31: 47,619,994 km (0.056 R)
• M32: 52,595,470 km (0.09 R)
• M33: 54,153,232 km (0.06 R)
• M34: 55,031,821 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 355.7

Radius: 5.9

Gravity: 10.22 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 12.86 AU - 17.18 AU

Year: 20651 Days

Day: 15.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 63,438,353 km

• M1: 73,453 km (0.042 R)
• M2: 390,899 km (0.11 R)
• M3: 711,039 km (0.088 R)
• M4: 1,095,954 km (0.115 R)
• M5: 1,627,026 km (0.119 R)
• M6: 2,235,441 km (0.064 R)
• M7: 2,749,010 km (0.072 R)
• M8: 3,832,398 km (0.09 R)
• M9: 4,830,216 km (0.102 R)
• M10: 5,797,965 km (0.111 R)
• M11: 9,845,335 km (0.117 R)
• M12: 11,032,544 km (0.079 R)
• M13: 18,591,275 km (0.085 R)
• M14: 22,314,318 km (0.117 R)
• M15: 28,785,622 km (0.049 R)
• M16: 34,733,634 km (0.098 R)
• M17: 38,127,561 km (0.1 R)
• M18: 39,352,169 km (0.107 R)
• M19: 39,904,783 km (0.114 R)
• M20: 40,462,484 km (0.071 R)
• M21: 40,884,200 km (0.073 R)
• M22: 44,962,388 km (0.114 R)
• M23: 46,635,939 km (0.089 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 199.6

Radius: 5.5

Gravity: 6.6 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 17.66 AU - 19.32 AU

Year: 28206 Days

Day: 19 Hours

Environment

Temp: -195 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 63,438,353 km

• M1: 68,366 km (0.1 R)
• M2: 638,633 km (0.083 R)
• M3: 1,131,558 km (0.086 R)
• M4: 2,450,862 km (0.087 R)
• M5: 2,762,175 km (0.1 R)
• M6: 3,628,646 km (0.119 R)
• M7: 6,037,620 km (0.095 R)
• M8: 6,317,368 km (0.104 R)
• M9: 7,032,895 km (0.12 R)
• M10: 9,881,538 km (0.061 R)
• M11: 11,680,901 km (0.076 R)
• M12: 13,688,056 km (0.086 R)
• M13: 14,381,591 km (0.077 R)
• M14: 15,098,315 km (0.06 R)
• M15: 15,688,628 km (0.047 R)
• M16: 16,294,200 km (0.111 R)
• M17: 18,453,197 km (0.042 R)
• M18: 19,471,210 km (0.025 R)
• M19: 20,526,025 km (0.087 R)
• M20: 21,158,674 km (0.098 R)
• M21: 23,134,712 km (0.065 R)
• M22: 25,025,629 km (0.096 R)
• M23: 25,230,429 km (0.054 R)
• M24: 25,747,439 km (0.084 R)
• M25: 30,489,093 km (0.065 R)
• M26: 37,360,423 km (0.119 R)
• M27: 40,375,269 km (0.118 R)
• M28: 41,082,418 km (0.112 R)
• M29: 51,701,024 km (0.102 R)
• M30: 52,200,083 km (0.04 R)
• M31: 61,370,133 km (0.117 R)

Kuiper Belt

Range: 30.9 - 56.9 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 375 - 14,500 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit