🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.48

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.47 AU - 0.75 AU

Year: 308 Days

Day: 18.2 Hours

Environment

Temp: -131 °C

Axial Tilt: 0.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 304.8

Radius: 10.4

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.92 AU - 0.98 AU

Year: 598 Days

Day: 7.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 61,938,390 km

• M1: 129,402 km (0.059 R)
• M2: 471,383 km (0.12 R)
• M3: 867,219 km (0.094 R)
• M4: 1,345,782 km (0.119 R)
• M5: 1,825,244 km (0.074 R)
• M6: 2,362,150 km (0.091 R)
• M7: 2,723,130 km (0.059 R)
• M8: 3,066,457 km (0.114 R)
• M9: 4,727,293 km (0.114 R)
• M10: 5,133,301 km (0.079 R)
• M11: 5,481,116 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 674.7

Radius: 12.8

Gravity: 4.12 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 2.19 AU - 3.25 AU

Year: 2896 Days

Day: 15 Hours

Environment

Temp: -209 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 61,938,390 km

• M1: 159,172 km (0.116 R)
• M2: 562,488 km (0.047 R)
• M3: 980,764 km (0.103 R)
• M4: 2,552,289 km (0.1 R)
• M5: 3,739,498 km (0.118 R)
• M6: 4,634,392 km (0.073 R)
• M7: 5,241,760 km (0.088 R)
• M8: 6,362,697 km (0.062 R)
• M9: 6,995,047 km (0.032 R)
• M10: 8,934,882 km (0.079 R)
• M11: 9,953,494 km (0.095 R)
• M12: 10,846,893 km (0.11 R)
• M13: 12,615,439 km (0.104 R)
• M14: 13,991,590 km (0.071 R)
• M15: 15,112,526 km (0.095 R)
• M16: 15,772,104 km (0.047 R)
• M17: 16,292,555 km (0.113 R)
• M18: 18,318,409 km (0.039 R)
• M19: 20,630,294 km (0.034 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 204.7

Radius: 10.3

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 2.89 AU - 3.43 AU

Year: 3627 Days

Day: 13 Hours

Environment

Temp: -211 °C

Axial Tilt: 22.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 61,938,390 km

• M1: 128,654 km (0.06 R)
• M2: 449,990 km (0.118 R)
• M3: 974,032 km (0.065 R)
• M4: 1,661,284 km (0.026 R)
• M5: 1,995,785 km (0.11 R)
• M6: 2,441,288 km (0.119 R)
• M7: 5,101,138 km (0.042 R)
• M8: 6,013,984 km (0.03 R)
• M9: 6,341,304 km (0.063 R)
• M10: 8,913,939 km (0.097 R)
• M11: 14,035,721 km (0.096 R)
• M12: 14,389,670 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 735.3

Radius: 10.4

Gravity: 6.8 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 4.47 AU - 5.67 AU

Year: 7371 Days

Day: 14.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 61,938,390 km

• M1: 144,212 km (0.047 R)
• M2: 560,244 km (0.036 R)
• M3: 2,023,012 km (0.08 R)
• M4: 2,372,024 km (0.12 R)
• M5: 3,237,148 km (0.116 R)
• M6: 3,791,259 km (0.104 R)
• M7: 4,434,530 km (0.07 R)
• M8: 5,179,228 km (0.031 R)
• M9: 6,916,658 km (0.065 R)
• M10: 8,622,971 km (0.069 R)
• M11: 9,145,516 km (0.083 R)
• M12: 11,710,372 km (0.073 R)
• M13: 12,791,964 km (0.083 R)
• M14: 17,172,788 km (0.102 R)
• M15: 17,652,549 km (0.093 R)
• M16: 18,353,265 km (0.047 R)
• M17: 22,300,405 km (0.03 R)
• M18: 22,707,461 km (0.12 R)
• M19: 25,786,185 km (0.085 R)
• M20: 30,111,508 km (0.069 R)
• M21: 32,031,148 km (0.036 R)
• M22: 34,570,871 km (0.056 R)
• M23: 37,930,540 km (0.112 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 293.5

Radius: 3.6

Gravity: 22.65 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 5.72 AU - 9.44 AU

Year: 13475 Days

Day: 22.4 Hours

Environment

Temp: -233 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 61,938,390 km

• M1: 45,179 km (0.043 R)
• M2: 205,547 km (0.088 R)
• M3: 668,852 km (0.113 R)
• M4: 792,270 km (0.074 R)
• M5: 1,118,842 km (0.08 R)
• M6: 1,319,004 km (0.067 R)
• M7: 1,868,926 km (0.097 R)
• M8: 3,035,790 km (0.048 R)
• M9: 3,619,969 km (0.114 R)
• M10: 4,588,017 km (0.112 R)
• M11: 5,226,052 km (0.101 R)
• M12: 7,331,941 km (0.106 R)
• M13: 12,083,469 km (0.049 R)
• M14: 13,290,275 km (0.115 R)
• M15: 14,701,731 km (0.051 R)
• M16: 14,956,945 km (0.041 R)
• M17: 17,176,977 km (0.026 R)
• M18: 19,916,264 km (0.067 R)
• M19: 20,703,597 km (0.101 R)
• M20: 24,149,584 km (0.12 R)
• M21: 35,812,234 km (0.081 R)
• M22: 37,446,741 km (0.087 R)
• M23: 38,644,122 km (0.108 R)
• M24: 42,132,296 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 397.1

Radius: 4.9

Gravity: 16.54 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 6.68 AU - 8.76 AU

Year: 13850 Days

Day: 20.4 Hours

Environment

Temp: -219 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 61,938,390 km

• M1: 61,485 km (0.073 R)
• M2: 633,397 km (0.094 R)
• M3: 1,909,018 km (0.087 R)
• M4: 2,242,622 km (0.094 R)
• M5: 3,841,524 km (0.1 R)
• M6: 4,888,559 km (0.107 R)
• M7: 5,177,582 km (0.104 R)
• M8: 5,967,908 km (0.07 R)
• M9: 9,838,603 km (0.062 R)
• M10: 17,963,114 km (0.048 R)
• M11: 21,321,736 km (0.107 R)
• M12: 25,076,044 km (0.041 R)
• M13: 30,412,948 km (0.08 R)
• M14: 33,630,649 km (0.044 R)
• M15: 39,826,843 km (0.105 R)
• M16: 41,387,897 km (0.029 R)
• M17: 43,531,933 km (0.065 R)
• M18: 46,172,934 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 553.5

Radius: 3.5

Gravity: 45.18 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 6.57 AU - 10.67 AU

Year: 16341 Days

Day: 22.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 61,938,390 km

• M1: 46,375 km (0.034 R)
• M2: 173,384 km (0.062 R)
• M3: 301,889 km (0.109 R)
• M4: 658,679 km (0.078 R)
• M5: 796,609 km (0.071 R)
• M6: 1,094,159 km (0.117 R)
• M7: 1,923,380 km (0.052 R)
• M8: 3,128,091 km (0.088 R)
• M9: 3,466,631 km (0.079 R)
• M10: 3,771,811 km (0.036 R)
• M11: 4,896,189 km (0.12 R)
• M12: 5,103,232 km (0.056 R)
• M13: 5,352,013 km (0.064 R)
• M14: 5,989,899 km (0.098 R)
• M15: 6,761,076 km (0.116 R)
• M16: 7,061,169 km (0.115 R)
• M17: 8,062,278 km (0.102 R)
• M18: 8,746,389 km (0.065 R)
• M19: 9,154,343 km (0.117 R)
• M20: 9,628,269 km (0.113 R)
• M21: 10,285,153 km (0.098 R)
• M22: 12,435,024 km (0.12 R)
• M23: 12,562,481 km (0.115 R)
• M24: 13,213,232 km (0.091 R)
• M25: 17,757,267 km (0.079 R)
• M26: 19,163,786 km (0.037 R)
• M27: 19,850,740 km (0.072 R)
• M28: 21,364,521 km (0.092 R)
• M29: 22,290,083 km (0.072 R)
• M30: 26,681,079 km (0.055 R)
• M31: 29,415,878 km (0.119 R)
• M32: 35,178,986 km (0.1 R)
• M33: 35,562,256 km (0.103 R)
• M34: 35,948,368 km (0.08 R)
• M35: 36,077,621 km (0.115 R)
• M36: 48,713,405 km (0.104 R)
• M37: 52,609,532 km (0.066 R)
• M38: 52,776,184 km (0.09 R)
• M39: 53,783,726 km (0.104 R)
• M40: 55,837,405 km (0.12 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 506 - 18,140 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit