🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.13

Radius: 1.35

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.56 AU - 0.6 AU

Year: 281 Days

Day: 35.5 Hours

Environment

Temp: -116 °C

Axial Tilt: 41.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 310.9

Radius: 11.9

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.75 AU - 1.05 AU

Year: 543 Days

Day: 11.1 Hours

Environment

Temp: -147 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 64,739,224 km

• M1: 148,102 km (0.093 R)
• M2: 531,072 km (0.09 R)
• M3: 1,083,687 km (0.115 R)
• M4: 1,506,301 km (0.072 R)
• M5: 1,908,719 km (0.056 R)
• M6: 2,374,866 km (0.061 R)
• M7: 2,805,858 km (0.071 R)
• M8: 3,267,217 km (0.089 R)
• M9: 4,041,835 km (0.048 R)
• M10: 4,647,108 km (0.112 R)
• M11: 5,128,813 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 100.2

Radius: 8.9

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 1.16 AU - 1.78 AU

Year: 1133 Days

Day: 8.4 Hours

Environment

Temp: -172 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 64,739,224 km

• M1: 111,750 km (0.076 R)
• M2: 431,590 km (0.104 R)
• M3: 1,024,596 km (0.079 R)
• M4: 1,427,912 km (0.098 R)
• M5: 1,764,058 km (0.098 R)
• M6: 2,539,573 km (0.07 R)
• M7: 2,907,285 km (0.12 R)
• M8: 3,489,370 km (0.068 R)
• M9: 3,932,330 km (0.094 R)
• M10: 5,623,234 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 189.9

Radius: 12.1

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.65 AU - 1.69 AU

Year: 1372 Days

Day: 11.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 64,739,224 km

• M1: 197,320 km (0.105 R)
• M2: 1,305,092 km (0.118 R)
• M3: 1,870,273 km (0.118 R)
• M4: 2,455,200 km (0.099 R)
• M5: 4,069,810 km (0.084 R)
• M6: 5,397,940 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 359.7

Radius: 11.4

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 1.94 AU - 2.92 AU

Year: 2408 Days

Day: 9.9 Hours

Environment

Temp: -202 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 64,739,224 km

• M1: 141,819 km (0.079 R)
• M2: 961,914 km (0.09 R)
• M3: 1,404,874 km (0.07 R)
• M4: 1,918,443 km (0.117 R)
• M5: 2,528,952 km (0.109 R)
• M6: 3,019,932 km (0.101 R)
• M7: 4,139,223 km (0.052 R)
• M8: 4,702,011 km (0.087 R)
• M9: 5,448,803 km (0.072 R)
• M10: 6,884,793 km (0.118 R)
• M11: 7,934,671 km (0.03 R)
• M12: 8,961,810 km (0.115 R)
• M13: 10,807,848 km (0.117 R)
• M14: 11,538,185 km (0.12 R)
• M15: 14,269,243 km (0.062 R)
• M16: 14,880,799 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 839.8

Radius: 11.6

Gravity: 6.24 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 3.61 AU - 5.35 AU

Year: 6029 Days

Day: 14.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 64,739,224 km

• M1: 144,362 km (0.089 R)
• M2: 648,357 km (0.116 R)
• M3: 1,442,871 km (0.095 R)
• M4: 1,932,206 km (0.086 R)
• M5: 2,750,806 km (0.101 R)
• M6: 3,556,839 km (0.049 R)
• M7: 5,481,864 km (0.067 R)
• M8: 7,672,276 km (0.067 R)
• M9: 9,437,830 km (0.037 R)
• M10: 10,021,262 km (0.115 R)
• M11: 12,124,459 km (0.111 R)
• M12: 12,760,399 km (0.1 R)
• M13: 13,869,667 km (0.08 R)
• M14: 17,650,754 km (0.08 R)
• M15: 19,168,274 km (0.099 R)
• M16: 20,178,210 km (0.034 R)
• M17: 22,857,956 km (0.104 R)
• M18: 27,175,052 km (0.055 R)
• M19: 28,727,130 km (0.082 R)
• M20: 30,627,920 km (0.094 R)
• M21: 32,509,861 km (0.102 R)
• M22: 34,049,223 km (0.052 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 873.5

Radius: 7.9

Gravity: 14 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 5.81 AU - 7.35 AU

Year: 10732 Days

Day: 18.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 64,739,224 km

• M1: 98,286 km (0.102 R)
• M2: 465,399 km (0.11 R)
• M3: 859,589 km (0.119 R)
• M4: 1,241,662 km (0.115 R)
• M5: 2,017,327 km (0.109 R)
• M6: 2,635,615 km (0.088 R)
• M7: 3,201,843 km (0.105 R)
• M8: 4,013,561 km (0.106 R)
• M9: 4,826,476 km (0.097 R)
• M10: 5,323,291 km (0.105 R)
• M11: 7,701,298 km (0.076 R)
• M12: 8,103,717 km (0.087 R)
• M13: 8,379,874 km (0.092 R)
• M14: 10,223,219 km (0.096 R)
• M15: 11,612,236 km (0.114 R)
• M16: 13,568,228 km (0.115 R)
• M17: 14,355,262 km (0.082 R)
• M18: 16,092,093 km (0.032 R)
• M19: 16,602,521 km (0.088 R)
• M20: 17,578,947 km (0.095 R)
• M21: 21,342,530 km (0.108 R)
• M22: 22,226,354 km (0.109 R)
• M23: 22,496,079 km (0.098 R)
• M24: 23,411,468 km (0.073 R)
• M25: 26,106,324 km (0.079 R)
• M26: 27,735,595 km (0.093 R)
• M27: 28,153,272 km (0.103 R)
• M28: 33,380,371 km (0.087 R)
• M29: 36,532,698 km (0.055 R)
• M30: 37,541,286 km (0.058 R)
• M31: 41,352,891 km (0.1 R)
• M32: 42,724,853 km (0.117 R)
• M33: 52,869,084 km (0.107 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 388.8

Radius: 5.7

Gravity: 11.97 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 8.47 AU - 12.01 AU

Year: 20835 Days

Day: 19 Hours

Environment

Temp: -236 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 64,739,224 km

• M1: 70,909 km (0.107 R)
• M2: 399,875 km (0.085 R)
• M3: 2,053,829 km (0.068 R)
• M4: 2,867,342 km (0.103 R)
• M5: 3,241,487 km (0.094 R)
• M6: 11,734,607 km (0.077 R)
• M7: 15,186,727 km (0.118 R)
• M8: 17,262,846 km (0.112 R)
• M9: 19,607,943 km (0.105 R)
• M10: 22,538,565 km (0.067 R)
• M11: 31,233,941 km (0.088 R)
• M12: 34,438,327 km (0.099 R)
• M13: 37,855,143 km (0.073 R)
• M14: 44,744,274 km (0.085 R)
• M15: 51,419,032 km (0.063 R)
• M16: 55,341,040 km (0.065 R)
• M17: 59,825,086 km (0.07 R)
• M18: 64,739,227 km (0.104 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 365 - 17,986 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit