🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.54

Radius: 0.78

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.54 AU - 0.76 AU

Year: 338 Days

Day: 45.6 Hours

Environment

Temp: -134 °C

Axial Tilt: 13.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,414,358 km

• M1: 25,581 km (0.06 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 659.4

Radius: 14.2

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.76 AU - 1.02 AU

Year: 542 Days

Day: 12.9 Hours

Environment

Temp: -160 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,414,358 km

• M1: 176,675 km (0.094 R)
• M2: 802,593 km (0.099 R)
• M3: 1,293,124 km (0.117 R)
• M4: 1,948,363 km (0.117 R)
• M5: 2,480,333 km (0.102 R)
• M6: 3,382,857 km (0.107 R)
• M7: 4,479,708 km (0.103 R)
• M8: 5,168,606 km (0.117 R)
• M9: 5,927,516 km (0.066 R)
• M10: 6,525,160 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 147.5

Radius: 9.7

Gravity: 1.57 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.86 AU - 1.4 AU

Year: 776 Days

Day: 7.2 Hours

Environment

Temp: -172 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,414,358 km

• M1: 120,576 km (0.105 R)
• M2: 520,900 km (0.107 R)
• M3: 969,843 km (0.083 R)
• M4: 1,522,458 km (0.116 R)
• M5: 2,734,051 km (0.049 R)
• M6: 3,039,230 km (0.079 R)
• M7: 3,401,407 km (0.058 R)
• M8: 3,904,056 km (0.076 R)
• M9: 4,779,353 km (0.067 R)
• M10: 5,103,531 km (0.048 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 251.9

Radius: 14.2

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 3.36 AU - 3.62 AU

Year: 4210 Days

Day: 15 Hours

Environment

Temp: -201 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 45,414,358 km

• M1: 176,825 km (0.108 R)
• M2: 1,643,781 km (0.053 R)
• M3: 2,608,987 km (0.034 R)
• M4: 3,623,859 km (0.093 R)
• M5: 4,325,622 km (0.1 R)
• M6: 6,537,577 km (0.088 R)
• M7: 7,251,009 km (0.108 R)
• M8: 8,175,374 km (0.041 R)
• M9: 10,072,724 km (0.087 R)
• M10: 15,352,481 km (0.082 R)
• M11: 17,245,194 km (0.117 R)
• M12: 17,891,307 km (0.095 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 163.9

Radius: 7.7

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 6.88 AU - 7.86 AU

Year: 12919 Days

Day: 24.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 45,414,358 km

• M1: 97,239 km (0.117 R)
• M2: 394,639 km (0.025 R)
• M3: 721,660 km (0.066 R)
• M4: 1,094,458 km (0.039 R)
• M5: 1,372,261 km (0.117 R)
• M6: 2,151,965 km (0.107 R)
• M7: 2,914,167 km (0.034 R)
• M8: 3,916,173 km (0.084 R)
• M9: 4,161,514 km (0.11 R)
• M10: 4,417,176 km (0.112 R)
• M11: 4,988,491 km (0.049 R)
• M12: 5,669,610 km (0.119 R)
• M13: 6,478,485 km (0.105 R)
• M14: 7,288,707 km (0.055 R)
• M15: 8,007,525 km (0.093 R)
• M16: 8,731,130 km (0.066 R)
• M17: 10,873,820 km (0.118 R)
• M18: 14,709,959 km (0.105 R)
• M19: 18,254,381 km (0.09 R)
• M20: 20,296,392 km (0.089 R)
• M21: 21,485,695 km (0.082 R)
• M22: 22,878,601 km (0.11 R)
• M23: 23,758,984 km (0.049 R)
• M24: 24,248,468 km (0.107 R)
• M25: 26,710,101 km (0.1 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 73.7

Radius: 4.8

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 7.17 AU - 8.47 AU

Year: 14120 Days

Day: 20.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 45,414,358 km

• M1: 59,690 km (0.111 R)
• M2: 364,570 km (0.068 R)
• M3: 668,254 km (0.107 R)
• M4: 1,451,997 km (0.1 R)
• M5: 1,933,702 km (0.082 R)
• M6: 2,384,291 km (0.105 R)
• M7: 4,016,553 km (0.048 R)
• M8: 6,091,177 km (0.028 R)
• M9: 6,785,161 km (0.092 R)
• M10: 7,356,625 km (0.088 R)
• M11: 8,254,362 km (0.062 R)
• M12: 9,713,539 km (0.059 R)
• M13: 10,438,341 km (0.088 R)
• M14: 11,615,676 km (0.099 R)
• M15: 13,233,876 km (0.101 R)
• M16: 16,431,830 km (0.048 R)
• M17: 20,518,694 km (0.116 R)
• M18: 20,933,380 km (0.068 R)
• M19: 23,539,674 km (0.069 R)
• M20: 28,095,976 km (0.069 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 239.1

Radius: 6.1

Gravity: 6.43 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 8.07 AU - 8.23 AU

Year: 15023 Days

Day: 19.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 45,414,358 km

• M1: 75,846 km (0.115 R)
• M2: 304,731 km (0.12 R)
• M3: 634,893 km (0.091 R)
• M4: 852,558 km (0.103 R)
• M5: 1,131,558 km (0.116 R)
• M6: 2,778,780 km (0.097 R)
• M7: 3,891,938 km (0.119 R)
• M8: 4,519,202 km (0.053 R)
• M9: 4,963,209 km (0.062 R)
• M10: 5,180,275 km (0.109 R)
• M11: 5,566,836 km (0.114 R)
• M12: 9,014,468 km (0.053 R)
• M13: 10,008,546 km (0.078 R)
• M14: 10,456,143 km (0.113 R)
• M15: 14,656,851 km (0.098 R)
• M16: 14,911,467 km (0.102 R)
• M17: 15,429,824 km (0.055 R)
• M18: 17,197,173 km (0.104 R)
• M19: 17,695,035 km (0.117 R)
• M20: 18,570,930 km (0.086 R)
• M21: 19,170,818 km (0.082 R)
• M22: 20,016,494 km (0.119 R)
• M23: 20,567,463 km (0.104 R)
• M24: 23,911,424 km (0.092 R)
• M25: 25,436,276 km (0.102 R)
• M26: 31,440,984 km (0.101 R)
• M27: 32,185,234 km (0.099 R)
• M28: 40,534,441 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 144.9

Radius: 3.4

Gravity: 12.53 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 7.82 AU - 11.94 AU

Year: 20052 Days

Day: 19.3 Hours

Environment

Temp: -236 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 45,414,358 km

• M1: 42,336 km (0.105 R)
• M2: 281,244 km (0.118 R)
• M3: 399,875 km (0.096 R)
• M4: 587,172 km (0.109 R)
• M5: 955,332 km (0.1 R)
• M6: 1,255,126 km (0.055 R)
• M7: 1,487,601 km (0.068 R)
• M8: 1,748,051 km (0.114 R)
• M9: 4,935,683 km (0.078 R)
• M10: 6,873,873 km (0.083 R)
• M11: 7,632,334 km (0.113 R)
• M12: 8,010,368 km (0.115 R)
• M13: 8,578,241 km (0.089 R)
• M14: 12,387,900 km (0.072 R)
• M15: 13,996,377 km (0.099 R)
• M16: 14,689,763 km (0.099 R)
• M17: 15,077,371 km (0.114 R)
• M18: 17,189,843 km (0.084 R)
• M19: 17,620,385 km (0.049 R)
• M20: 18,803,405 km (0.084 R)
• M21: 20,038,186 km (0.081 R)
• M22: 20,275,747 km (0.051 R)
• M23: 20,514,954 km (0.075 R)
• M24: 21,326,224 km (0.096 R)
• M25: 22,753,986 km (0.079 R)
• M26: 23,360,007 km (0.101 R)
• M27: 26,457,131 km (0.101 R)
• M28: 28,301,673 km (0.064 R)
• M29: 28,800,881 km (0.036 R)
• M30: 40,941,945 km (0.037 R)
• M31: 41,069,103 km (0.104 R)
• M32: 41,324,168 km (0.105 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 469 - 17,452 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit