🌌 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: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.98

Radius: 0.99

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.53 AU - 0.61 AU

Year: 278 Days

Day: 32.8 Hours

Environment

Temp: -126 °C

Axial Tilt: 1.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,802,530 km

• M1: 255,064 km (0.116 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 358.7

Radius: 10.3

Gravity: 3.38 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.77 AU - 0.99 AU

Year: 533 Days

Day: 13.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 61,802,530 km

• M1: 128,056 km (0.076 R)
• M2: 454,927 km (0.072 R)
• M3: 870,809 km (0.062 R)
• M4: 1,219,971 km (0.07 R)
• M5: 2,364,544 km (0.1 R)
• M6: 2,713,107 km (0.074 R)
• M7: 3,074,535 km (0.089 R)
• M8: 3,409,934 km (0.084 R)
• M9: 3,732,616 km (0.099 R)
• M10: 4,248,729 km (0.069 R)
• M11: 4,623,472 km (0.095 R)
• M12: 5,408,113 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 217

Radius: 12.9

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.18 AU - 1.54 AU

Year: 1024 Days

Day: 8.4 Hours

Environment

Temp: -178 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 61,802,530 km

• M1: 160,369 km (0.115 R)
• M2: 562,488 km (0.115 R)
• M3: 972,985 km (0.082 R)
• M4: 1,574,667 km (0.095 R)
• M5: 2,098,260 km (0.109 R)
• M6: 2,507,560 km (0.118 R)
• M7: 3,903,756 km (0.057 R)
• M8: 5,223,509 km (0.089 R)
• M9: 5,730,047 km (0.089 R)
• M10: 6,192,903 km (0.092 R)
• M11: 6,680,742 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 665.6

Radius: 14.6

Gravity: 3.12 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 3.87 AU - 4.33 AU

Year: 5360 Days

Day: 14.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 22.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 61,802,530 km

• M1: 182,958 km (0.107 R)
• M2: 754,721 km (0.11 R)
• M3: 1,563,298 km (0.08 R)
• M4: 2,489,159 km (0.104 R)
• M5: 3,293,098 km (0.12 R)
• M6: 3,757,001 km (0.095 R)
• M7: 4,792,368 km (0.066 R)
• M8: 5,477,526 km (0.074 R)
• M9: 6,041,211 km (0.105 R)
• M10: 6,742,376 km (0.119 R)
• M11: 8,934,134 km (0.09 R)
• M12: 9,803,298 km (0.092 R)
• M13: 10,324,796 km (0.055 R)
• M14: 11,376,469 km (0.076 R)
• M15: 13,216,673 km (0.064 R)
• M16: 13,962,418 km (0.095 R)
• M17: 17,104,721 km (0.077 R)
• M18: 17,734,528 km (0.094 R)
• M19: 18,708,261 km (0.09 R)
• M20: 23,115,265 km (0.102 R)
• M21: 26,051,422 km (0.064 R)
• M22: 28,084,008 km (0.114 R)
• M23: 28,784,425 km (0.095 R)
• M24: 30,770,936 km (0.083 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 325.4

Radius: 3.5

Gravity: 26.56 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 6 AU - 9.26 AU

Year: 13608 Days

Day: 19.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 61,802,530 km

• M1: 44,281 km (0.095 R)
• M2: 410,646 km (0.102 R)
• M3: 677,828 km (0.088 R)
• M4: 2,521,771 km (0.086 R)
• M5: 2,892,924 km (0.062 R)
• M6: 3,590,798 km (0.118 R)
• M7: 6,202,029 km (0.076 R)
• M8: 8,496,411 km (0.103 R)
• M9: 8,812,212 km (0.047 R)
• M10: 10,926,180 km (0.116 R)
• M11: 12,015,551 km (0.085 R)
• M12: 29,843,728 km (0.079 R)
• M13: 32,499,838 km (0.053 R)
• M14: 32,938,908 km (0.115 R)
• M15: 35,309,137 km (0.113 R)
• M16: 36,713,412 km (0.11 R)
• M17: 39,135,701 km (0.072 R)
• M18: 42,571,964 km (0.083 R)
• M19: 45,653,231 km (0.067 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 734.8

Radius: 3.8

Gravity: 50.89 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 8.67 AU - 10.67 AU

Year: 19416 Days

Day: 19.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 2.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 61,802,530 km

• M1: 47,273 km (0.108 R)
• M2: 342,579 km (0.086 R)
• M3: 492,327 km (0.115 R)
• M4: 764,146 km (0.072 R)
• M5: 987,944 km (0.114 R)
• M6: 1,239,718 km (0.108 R)
• M7: 1,357,900 km (0.075 R)
• M8: 1,669,363 km (0.119 R)
• M9: 1,889,421 km (0.075 R)
• M10: 4,470,732 km (0.104 R)
• M11: 4,750,780 km (0.077 R)
• M12: 5,192,542 km (0.073 R)
• M13: 7,188,776 km (0.116 R)
• M14: 8,174,925 km (0.114 R)
• M15: 8,382,417 km (0.105 R)
• M16: 11,409,231 km (0.113 R)
• M17: 12,538,097 km (0.042 R)
• M18: 13,023,691 km (0.119 R)
• M19: 13,449,896 km (0.089 R)
• M20: 14,860,903 km (0.078 R)
• M21: 16,204,441 km (0.096 R)
• M22: 17,799,454 km (0.114 R)
• M23: 20,717,211 km (0.095 R)
• M24: 21,006,084 km (0.092 R)
• M25: 26,675,694 km (0.054 R)
• M26: 27,362,348 km (0.073 R)
• M27: 28,890,341 km (0.071 R)
• M28: 34,483,356 km (0.087 R)
• M29: 35,709,760 km (0.11 R)
• M30: 36,543,469 km (0.098 R)
• M31: 37,961,507 km (0.03 R)
• M32: 41,972,824 km (0.073 R)
• M33: 46,093,797 km (0.114 R)
• M34: 46,421,566 km (0.093 R)
• M35: 48,589,837 km (0.035 R)
• M36: 50,476,416 km (0.089 R)
• M37: 53,306,957 km (0.09 R)
• M38: 57,368,988 km (0.086 R)
• M39: 59,281,597 km (0.099 R)
• M40: 59,669,205 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 283.5

Radius: 7.7

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 8.23 AU - 13.27 AU

Year: 22758 Days

Day: 23 Hours

Environment

Temp: -229 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 61,802,530 km

• M1: 96,191 km (0.104 R)
• M2: 409,749 km (0.111 R)
• M3: 717,621 km (0.074 R)
• M4: 1,407,267 km (0.06 R)
• M5: 1,679,984 km (0.119 R)
• M6: 2,042,909 km (0.057 R)
• M7: 2,764,120 km (0.105 R)
• M8: 3,146,043 km (0.058 R)
• M9: 4,104,517 km (0.088 R)
• M10: 4,570,215 km (0.038 R)
• M11: 4,866,269 km (0.029 R)
• M12: 6,062,903 km (0.12 R)
• M13: 6,420,890 km (0.096 R)
• M14: 7,534,796 km (0.093 R)
• M15: 8,329,460 km (0.059 R)
• M16: 10,250,596 km (0.065 R)
• M17: 10,990,656 km (0.081 R)
• M18: 11,344,007 km (0.111 R)
• M19: 11,583,662 km (0.098 R)
• M20: 12,323,274 km (0.111 R)
• M21: 13,692,843 km (0.06 R)
• M22: 14,240,221 km (0.053 R)
• M23: 15,525,417 km (0.042 R)
• M24: 17,675,437 km (0.048 R)
• M25: 18,738,031 km (0.056 R)
• M26: 21,534,464 km (0.082 R)
• M27: 22,745,907 km (0.099 R)
• M28: 24,697,561 km (0.065 R)
• M29: 30,404,271 km (0.118 R)
• M30: 31,808,247 km (0.086 R)
• M31: 34,745,003 km (0.095 R)
• M32: 37,857,836 km (0.099 R)
• M33: 40,310,941 km (0.053 R)
• M34: 41,576,390 km (0.034 R)
• M35: 47,833,321 km (0.12 R)
• M36: 49,570,152 km (0.104 R)
• M37: 57,113,475 km (0.082 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 422 - 20,111 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit