🌌 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: 0.72

Radius: 0.88

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.47 AU - 0.57 AU

Year: 242 Days

Day: 15.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 22.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,254,399 km

• M1: 25,880 km (0.119 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.27

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.52 AU - 0.6 AU

Year: 271 Days

Day: 19.4 Hours

Environment

Temp: -125 °C

Axial Tilt: 15.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 289.9

Radius: 9.4

Gravity: 3.28 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.62 AU - 0.82 AU

Year: 394 Days

Day: 13.9 Hours

Environment

Temp: -130 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 41,254,399 km

• M1: 116,836 km (0.037 R)
• M2: 559,646 km (0.07 R)
• M3: 1,169,556 km (0.105 R)
• M4: 1,611,019 km (0.109 R)
• M5: 1,917,396 km (0.046 R)
• M6: 2,468,215 km (0.101 R)
• M7: 2,767,710 km (0.086 R)
• M8: 3,273,201 km (0.119 R)
• M9: 3,782,133 km (0.088 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 481.6

Radius: 10.3

Gravity: 4.54 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.89 AU - 1.05 AU

Year: 617 Days

Day: 14.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 41,254,399 km

• M1: 128,205 km (0.115 R)
• M2: 455,974 km (0.086 R)
• M3: 797,057 km (0.112 R)
• M4: 1,261,858 km (0.095 R)
• M5: 1,594,863 km (0.085 R)
• M6: 2,253,243 km (0.096 R)
• M7: 2,870,185 km (0.092 R)
• M8: 4,192,630 km (0.12 R)
• M9: 6,102,546 km (0.061 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 267.9

Radius: 10.7

Gravity: 2.34 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 3.67 AU - 3.99 AU

Year: 4840 Days

Day: 5 Hours

Environment

Temp: -217 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 41,254,399 km

• M1: 133,591 km (0.1 R)
• M2: 712,834 km (0.079 R)
• M3: 1,203,216 km (0.12 R)
• M4: 1,888,524 km (0.064 R)
• M5: 2,493,198 km (0.065 R)
• M6: 3,571,200 km (0.062 R)
• M7: 4,322,930 km (0.107 R)
• M8: 4,841,436 km (0.073 R)
• M9: 5,300,701 km (0.072 R)
• M10: 5,976,136 km (0.085 R)
• M11: 7,126,394 km (0.056 R)
• M12: 7,530,458 km (0.072 R)
• M13: 8,590,359 km (0.112 R)
• M14: 8,976,919 km (0.103 R)
• M15: 9,709,351 km (0.113 R)
• M16: 11,127,987 km (0.119 R)
• M17: 11,461,142 km (0.071 R)
• M18: 11,886,897 km (0.081 R)
• M19: 13,887,470 km (0.084 R)
• M20: 15,018,130 km (0.082 R)
• M21: 16,746,135 km (0.101 R)
• M22: 17,294,860 km (0.109 R)
• M23: 18,313,023 km (0.103 R)
• M24: 20,036,840 km (0.088 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 427.3

Radius: 14.7

Gravity: 1.98 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 3.65 AU - 6.03 AU

Year: 6875 Days

Day: 8.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 41,254,399 km

• M1: 182,809 km (0.064 R)
• M2: 702,661 km (0.034 R)
• M3: 1,725,312 km (0.056 R)
• M4: 2,228,260 km (0.12 R)
• M5: 2,903,395 km (0.097 R)
• M6: 5,753,385 km (0.115 R)
• M7: 6,436,149 km (0.103 R)
• M8: 7,103,206 km (0.071 R)
• M9: 8,228,332 km (0.054 R)
• M10: 9,895,002 km (0.026 R)
• M11: 11,535,941 km (0.093 R)
• M12: 12,371,146 km (0.118 R)
• M13: 17,865,127 km (0.068 R)
• M14: 19,870,188 km (0.117 R)
• M15: 21,725,800 km (0.111 R)
• M16: 22,544,848 km (0.093 R)
• M17: 24,642,360 km (0.052 R)
• M18: 26,028,085 km (0.098 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330.7

Radius: 13.9

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 5.29 AU - 6.35 AU

Year: 9066 Days

Day: 8.7 Hours

Environment

Temp: -225 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,254,399 km

• M1: 173,833 km (0.116 R)
• M2: 803,191 km (0.108 R)
• M3: 1,662,780 km (0.102 R)
• M4: 3,282,327 km (0.106 R)
• M5: 5,244,602 km (0.092 R)
• M6: 7,819,481 km (0.12 R)
• M7: 9,317,853 km (0.111 R)
• M8: 10,856,617 km (0.103 R)
• M9: 13,038,053 km (0.074 R)
• M10: 15,137,360 km (0.104 R)
• M11: 16,361,669 km (0.112 R)
• M12: 16,805,526 km (0.116 R)
• M13: 19,853,582 km (0.09 R)
• M14: 23,895,417 km (0.091 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 304.1

Radius: 6.3

Gravity: 7.66 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 6.15 AU - 7.87 AU

Year: 11984 Days

Day: 16.4 Hours

Environment

Temp: -218 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 41,254,399 km

• M1: 82,129 km (0.062 R)
• M2: 402,867 km (0.076 R)
• M3: 626,516 km (0.082 R)
• M4: 862,133 km (0.108 R)
• M5: 1,246,599 km (0.117 R)
• M6: 1,544,748 km (0.106 R)
• M7: 1,889,571 km (0.089 R)
• M8: 3,150,830 km (0.112 R)
• M9: 3,397,966 km (0.095 R)
• M10: 4,519,202 km (0.092 R)
• M11: 4,922,668 km (0.12 R)
• M12: 5,318,503 km (0.109 R)
• M13: 6,002,615 km (0.094 R)
• M14: 6,348,335 km (0.082 R)
• M15: 7,117,567 km (0.08 R)
• M16: 8,153,982 km (0.106 R)
• M17: 8,578,092 km (0.08 R)
• M18: 10,131,067 km (0.077 R)
• M19: 11,076,077 km (0.109 R)
• M20: 12,518,051 km (0.084 R)
• M21: 13,663,970 km (0.092 R)
• M22: 18,011,284 km (0.094 R)
• M23: 18,657,697 km (0.1 R)
• M24: 20,845,865 km (0.082 R)
• M25: 21,960,967 km (0.066 R)
• M26: 23,367,935 km (0.093 R)
• M27: 25,098,783 km (0.101 R)
• M28: 26,451,746 km (0.108 R)
• M29: 27,663,040 km (0.12 R)
• M30: 30,296,262 km (0.072 R)
• M31: 32,773,004 km (0.075 R)
• M32: 33,305,572 km (0.055 R)
• M33: 37,774,958 km (0.098 R)
• M34: 39,309,384 km (0.06 R)
• M35: 40,395,763 km (0.105 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 411 - 14,898 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit