🌌 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: 2.79

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.59 AU - 0.67 AU

Year: 323 Days

Day: 32.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 17.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280.9

Radius: 14.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.67 AU - 0.83 AU

Year: 419 Days

Day: 10.8 Hours

Environment

Temp: -141 °C

Axial Tilt: 49.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 26,261,087 km

• M1: 183,407 km (0.112 R)
• M2: 728,841 km (0.099 R)
• M3: 1,919,191 km (0.101 R)
• M4: 2,809,747 km (0.102 R)
• M5: 3,294,594 km (0.083 R)
• M6: 3,756,403 km (0.07 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 323.5

Radius: 9.2

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 1.4 AU - 1.94 AU

Year: 1393 Days

Day: 14.3 Hours

Environment

Temp: -179 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 26,261,087 km

• M1: 116,088 km (0.108 R)
• M2: 620,831 km (0.082 R)
• M3: 1,018,163 km (0.099 R)
• M4: 2,172,161 km (0.115 R)
• M5: 4,068,763 km (0.064 R)
• M6: 4,485,543 km (0.04 R)
• M7: 5,765,203 km (0.103 R)
• M8: 7,201,193 km (0.104 R)
• M9: 7,964,291 km (0.087 R)
• M10: 8,780,348 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 145.6

Radius: 8.3

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 3.11 AU - 4.51 AU

Year: 4802 Days

Day: 7.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 26,261,087 km

• M1: 115,041 km (0.095 R)
• M2: 482,004 km (0.064 R)
• M3: 770,579 km (0.09 R)
• M4: 1,210,845 km (0.116 R)
• M5: 2,142,242 km (0.063 R)
• M6: 5,324,487 km (0.096 R)
• M7: 8,314,949 km (0.115 R)
• M8: 8,668,149 km (0.066 R)
• M9: 9,439,326 km (0.074 R)
• M10: 9,788,488 km (0.081 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 820.8

Radius: 6.6

Gravity: 18.84 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 5.37 AU - 7.01 AU

Year: 9944 Days

Day: 22.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 26,261,087 km

• M1: 83,027 km (0.06 R)
• M2: 305,479 km (0.102 R)
• M3: 643,570 km (0.08 R)
• M4: 951,742 km (0.096 R)
• M5: 1,935,198 km (0.04 R)
• M6: 4,484,495 km (0.063 R)
• M7: 5,543,499 km (0.078 R)
• M8: 8,507,033 km (0.105 R)
• M9: 8,832,857 km (0.092 R)
• M10: 11,351,337 km (0.116 R)
• M11: 11,689,428 km (0.117 R)
• M12: 13,294,464 km (0.12 R)
• M13: 22,311,176 km (0.097 R)
• M14: 26,106,324 km (0.11 R)
• M15: 30,310,473 km (0.095 R)
• M16: 33,542,685 km (0.06 R)
• M17: 34,005,840 km (0.118 R)
• M18: 39,771,342 km (0.091 R)
• M19: 43,498,124 km (0.114 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 898.4

Radius: 7.9

Gravity: 14.4 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 7.07 AU - 9.07 AU

Year: 14802 Days

Day: 23.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 26,261,087 km

• M1: 98,286 km (0.064 R)
• M2: 469,289 km (0.096 R)
• M3: 926,160 km (0.034 R)
• M4: 1,757,925 km (0.072 R)
• M5: 2,892,624 km (0.113 R)
• M6: 3,273,052 km (0.108 R)
• M7: 4,753,921 km (0.092 R)
• M8: 5,974,341 km (0.119 R)
• M9: 10,577,018 km (0.098 R)
• M10: 12,241,743 km (0.082 R)
• M11: 13,932,349 km (0.113 R)
• M12: 14,944,079 km (0.112 R)
• M13: 15,849,745 km (0.117 R)
• M14: 16,552,556 km (0.063 R)
• M15: 17,936,635 km (0.09 R)
• M16: 20,656,474 km (0.03 R)
• M17: 21,779,206 km (0.108 R)
• M18: 25,497,162 km (0.036 R)
• M19: 26,788,341 km (0.083 R)
• M20: 31,773,690 km (0.054 R)
• M21: 32,142,898 km (0.118 R)
• M22: 32,639,712 km (0.083 R)
• M23: 34,032,319 km (0.083 R)
• M24: 36,665,241 km (0.053 R)
• M25: 39,430,857 km (0.095 R)
• M26: 40,000,077 km (0.097 R)
• M27: 41,888,451 km (0.119 R)
• M28: 42,332,457 km (0.12 R)
• M29: 45,062,918 km (0.084 R)
• M30: 56,437,891 km (0.086 R)
• M31: 61,058,670 km (0.115 R)
• M32: 61,629,536 km (0.057 R)
• M33: 67,333,254 km (0.075 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 785.3

Radius: 6.7

Gravity: 17.49 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 7.13 AU - 9.31 AU

Year: 15217 Days

Day: 18.4 Hours

Environment

Temp: -234 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 26,261,087 km

• M1: 83,326 km (0.07 R)
• M2: 298,149 km (0.109 R)
• M3: 637,885 km (0.118 R)
• M4: 1,058,106 km (0.039 R)
• M5: 1,373,608 km (0.111 R)
• M6: 2,058,018 km (0.101 R)
• M7: 2,852,831 km (0.118 R)
• M8: 3,359,819 km (0.11 R)
• M9: 3,955,069 km (0.093 R)
• M10: 4,357,487 km (0.085 R)
• M11: 5,280,356 km (0.09 R)
• M12: 5,577,158 km (0.065 R)
• M13: 6,286,103 km (0.066 R)
• M14: 7,598,824 km (0.114 R)
• M15: 8,319,437 km (0.12 R)
• M16: 9,620,340 km (0.094 R)
• M17: 12,102,318 km (0.094 R)
• M18: 13,558,953 km (0.032 R)
• M19: 18,795,776 km (0.114 R)
• M20: 27,713,305 km (0.061 R)
• M21: 30,938,186 km (0.049 R)
• M22: 31,418,395 km (0.111 R)
• M23: 34,661,827 km (0.074 R)
• M24: 36,497,393 km (0.079 R)
• M25: 40,361,356 km (0.098 R)
• M26: 42,539,351 km (0.065 R)
• M27: 42,984,255 km (0.057 R)
• M28: 43,432,151 km (0.109 R)
• M29: 45,101,215 km (0.08 R)
• M30: 53,572,643 km (0.104 R)
• M31: 55,314,860 km (0.073 R)
• M32: 64,205,312 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 277.6

Radius: 5

Gravity: 11.1 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 9.11 AU - 9.99 AU

Year: 19055 Days

Day: 20.7 Hours

Environment

Temp: -238 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 26,261,087 km

• M1: 62,532 km (0.065 R)
• M2: 374,443 km (0.113 R)
• M3: 566,527 km (0.105 R)
• M4: 843,582 km (0.119 R)
• M5: 1,309,580 km (0.111 R)
• M6: 1,684,472 km (0.029 R)
• M7: 7,852,691 km (0.108 R)
• M8: 9,728,649 km (0.075 R)
• M9: 12,121,616 km (0.118 R)
• M10: 14,271,188 km (0.058 R)
• M11: 15,295,485 km (0.109 R)
• M12: 20,473,366 km (0.107 R)
• M13: 20,900,917 km (0.118 R)
• M14: 36,544,665 km (0.07 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 24.8

Radius: 8

Gravity: 0.39 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 9.03 AU - 11.55 AU

Year: 21313 Days

Day: 17.2 Hours

Environment

Temp: -232 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 26,261,087 km

• M1: 237,262 km (0.096 R)
• M2: 1,424,621 km (0.11 R)
• M3: 4,218,959 km (0.088 R)
• M4: 10,917,204 km (0.095 R)
• M5: 11,629,140 km (0.053 R)
• M6: 13,645,420 km (0.037 R)
• M7: 15,772,253 km (0.046 R)
• M8: 16,508,574 km (0.042 R)
• M9: 20,404,850 km (0.118 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 283 - 19,635 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit