🌌 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: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.59

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.63 AU - 0.69 AU

Year: 352 Days

Day: 23.2 Hours

Environment

Temp: -139 °C

Axial Tilt: 22.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 55,415,021 km

• M1: 918,232 km (0.083 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.7

Radius: 9.4

Gravity: 2.27 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.59 AU - 0.91 AU

Year: 426 Days

Day: 10.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,415,021 km

• M1: 116,986 km (0.113 R)
• M2: 422,764 km (0.092 R)
• M3: 764,296 km (0.106 R)
• M4: 1,151,305 km (0.049 R)
• M5: 1,540,559 km (0.062 R)
• M6: 2,163,634 km (0.103 R)
• M7: 2,512,795 km (0.047 R)
• M8: 2,844,753 km (0.1 R)
• M9: 3,418,461 km (0.092 R)
• M10: 3,727,829 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 521.5

Radius: 14.4

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.76 AU - 0.82 AU

Year: 461 Days

Day: 11.2 Hours

Environment

Temp: -139 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 55,415,021 km

• M1: 179,069 km (0.095 R)
• M2: 655,687 km (0.107 R)
• M3: 1,176,886 km (0.079 R)
• M4: 1,660,686 km (0.046 R)
• M5: 2,144,485 km (0.082 R)
• M6: 3,360,567 km (0.034 R)
• M7: 4,004,735 km (0.042 R)
• M8: 4,847,569 km (0.116 R)
• M9: 5,559,057 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 624

Radius: 8.3

Gravity: 9.06 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.72 AU - 1.96 AU

Year: 1637 Days

Day: 6.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 55,415,021 km

• M1: 103,223 km (0.061 R)
• M2: 399,726 km (0.116 R)
• M3: 774,468 km (0.094 R)
• M4: 1,047,634 km (0.092 R)
• M5: 1,527,245 km (0.089 R)
• M6: 1,859,950 km (0.083 R)
• M7: 2,158,248 km (0.04 R)
• M8: 2,424,981 km (0.094 R)
• M9: 2,782,520 km (0.083 R)
• M10: 3,929,038 km (0.096 R)
• M11: 4,367,360 km (0.093 R)
• M12: 5,043,543 km (0.106 R)
• M13: 5,495,029 km (0.049 R)
• M14: 5,765,053 km (0.104 R)
• M15: 6,091,177 km (0.117 R)
• M16: 6,503,618 km (0.051 R)
• M17: 8,882,972 km (0.096 R)
• M18: 9,192,789 km (0.1 R)
• M19: 10,712,255 km (0.067 R)
• M20: 11,098,965 km (0.096 R)
• M21: 12,546,025 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 380.1

Radius: 11.6

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 2.26 AU - 3.25 AU

Year: 2992 Days

Day: 14.5 Hours

Environment

Temp: -206 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 55,415,021 km

• M1: 144,362 km (0.116 R)
• M2: 807,081 km (0.063 R)
• M3: 1,270,984 km (0.089 R)
• M4: 1,715,439 km (0.079 R)
• M5: 2,212,702 km (0.12 R)
• M6: 3,213,063 km (0.091 R)
• M7: 3,642,708 km (0.111 R)
• M8: 4,703,656 km (0.11 R)
• M9: 5,191,046 km (0.119 R)
• M10: 5,884,731 km (0.063 R)
• M11: 6,558,520 km (0.104 R)
• M12: 8,184,200 km (0.117 R)
• M13: 9,259,959 km (0.072 R)
• M14: 10,244,612 km (0.027 R)
• M15: 11,572,143 km (0.04 R)
• M16: 14,611,972 km (0.06 R)
• M17: 15,460,042 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 475.3

Radius: 8.1

Gravity: 7.24 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 3.33 AU - 3.59 AU

Year: 4222 Days

Day: 14.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 55,415,021 km

• M1: 100,979 km (0.064 R)
• M2: 401,521 km (0.054 R)
• M3: 782,098 km (0.114 R)
• M4: 1,276,219 km (0.095 R)
• M5: 2,296,776 km (0.086 R)
• M6: 2,985,076 km (0.072 R)
• M7: 3,273,949 km (0.087 R)
• M8: 3,601,270 km (0.079 R)
• M9: 4,692,885 km (0.109 R)
• M10: 8,830,014 km (0.118 R)
• M11: 9,428,406 km (0.099 R)
• M12: 9,855,209 km (0.046 R)
• M13: 10,376,258 km (0.052 R)
• M14: 11,648,737 km (0.078 R)
• M15: 12,414,379 km (0.087 R)
• M16: 14,757,082 km (0.11 R)
• M17: 17,093,053 km (0.057 R)
• M18: 23,668,777 km (0.08 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 591.2

Radius: 12.5

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 4.21 AU - 6.05 AU

Year: 7622 Days

Day: 13.6 Hours

Environment

Temp: -211 °C

Axial Tilt: 92.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 55,415,021 km

• M1: 155,582 km (0.114 R)
• M2: 629,059 km (0.093 R)
• M3: 1,119,142 km (0.099 R)
• M4: 1,646,025 km (0.113 R)
• M5: 2,252,944 km (0.113 R)
• M6: 3,408,139 km (0.052 R)
• M7: 6,260,970 km (0.069 R)
• M8: 7,105,300 km (0.067 R)
• M9: 7,670,481 km (0.069 R)
• M10: 9,150,453 km (0.073 R)
• M11: 9,593,412 km (0.084 R)
• M12: 10,190,757 km (0.082 R)
• M13: 17,469,591 km (0.117 R)
• M14: 18,712,450 km (0.118 R)
• M15: 20,837,487 km (0.108 R)
• M16: 25,475,470 km (0.06 R)
• M17: 28,546,864 km (0.102 R)
• M18: 29,977,169 km (0.102 R)
• M19: 37,967,042 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 598.3

Radius: 6.5

Gravity: 14.16 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 6.1 AU - 7.84 AU

Year: 12071 Days

Day: 21.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 55,415,021 km

• M1: 80,783 km (0.115 R)
• M2: 285,433 km (0.116 R)
• M3: 610,808 km (0.037 R)
• M4: 815,907 km (0.111 R)
• M5: 1,183,170 km (0.103 R)
• M6: 1,927,868 km (0.063 R)
• M7: 2,623,647 km (0.073 R)
• M8: 6,108,231 km (0.095 R)
• M9: 6,641,996 km (0.12 R)
• M10: 6,960,789 km (0.096 R)
• M11: 8,157,273 km (0.103 R)
• M12: 9,140,430 km (0.1 R)
• M13: 9,838,304 km (0.106 R)
• M14: 13,298,054 km (0.117 R)
• M15: 13,804,742 km (0.073 R)
• M16: 15,749,813 km (0.095 R)
• M17: 17,491,881 km (0.105 R)
• M18: 18,100,146 km (0.075 R)
• M19: 18,331,873 km (0.117 R)
• M20: 19,038,723 km (0.113 R)
• M21: 19,682,293 km (0.05 R)
• M22: 20,506,876 km (0.102 R)
• M23: 21,699,770 km (0.1 R)
• M24: 22,579,704 km (0.097 R)
• M25: 23,028,498 km (0.119 R)
• M26: 26,140,732 km (0.054 R)
• M27: 29,097,983 km (0.111 R)
• M28: 30,602,189 km (0.074 R)
• M29: 33,184,996 km (0.111 R)
• M30: 33,648,451 km (0.098 R)
• M31: 34,826,235 km (0.117 R)
• M32: 42,475,174 km (0.068 R)
• M33: 42,884,474 km (0.115 R)
• M34: 46,254,764 km (0.081 R)
• M35: 47,709,753 km (0.083 R)
• M36: 50,100,776 km (0.086 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 735.9

Radius: 3.6

Gravity: 56.78 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 6.78 AU - 8.62 AU

Year: 14017 Days

Day: 20 Hours

Environment

Temp: -227 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 55,415,021 km

• M1: 44,879 km (0.12 R)
• M2: 179,817 km (0.099 R)
• M3: 296,503 km (0.1 R)
• M4: 446,550 km (0.111 R)
• M5: 566,378 km (0.105 R)
• M6: 862,731 km (0.047 R)
• M7: 1,214,286 km (0.089 R)
• M8: 1,482,066 km (0.096 R)
• M9: 1,720,376 km (0.079 R)
• M10: 1,983,518 km (0.085 R)
• M11: 3,442,845 km (0.069 R)
• M12: 3,831,351 km (0.115 R)
• M13: 4,036,300 km (0.091 R)
• M14: 4,662,068 km (0.048 R)
• M15: 5,756,227 km (0.098 R)
• M16: 7,724,935 km (0.108 R)
• M17: 8,634,041 km (0.099 R)
• M18: 9,665,818 km (0.101 R)
• M19: 10,719,585 km (0.034 R)
• M20: 10,950,714 km (0.109 R)
• M21: 11,423,144 km (0.106 R)
• M22: 15,334,829 km (0.095 R)
• M23: 18,773,186 km (0.119 R)
• M24: 21,119,031 km (0.109 R)
• M25: 21,300,044 km (0.105 R)
• M26: 21,757,514 km (0.088 R)
• M27: 22,691,903 km (0.094 R)
• M28: 23,848,145 km (0.065 R)
• M29: 26,909,515 km (0.091 R)
• M30: 29,879,632 km (0.074 R)
• M31: 33,674,032 km (0.066 R)
• M32: 35,303,003 km (0.117 R)
• M33: 43,798,068 km (0.106 R)
• M34: 49,784,675 km (0.076 R)
• M35: 54,234,015 km (0.087 R)
• M36: 58,227,082 km (0.05 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 368.4

Radius: 6.9

Gravity: 7.74 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 8.71 AU - 8.77 AU

Year: 16950 Days

Day: 20.8 Hours

Environment

Temp: -229 °C

Axial Tilt: 147.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 55,415,021 km

• M1: 85,869 km (0.052 R)
• M2: 392,694 km (0.109 R)
• M3: 1,199,177 km (0.088 R)
• M4: 1,718,281 km (0.112 R)
• M5: 3,050,450 km (0.108 R)
• M6: 3,843,618 km (0.101 R)
• M7: 4,393,390 km (0.077 R)
• M8: 6,281,615 km (0.094 R)
• M9: 6,715,598 km (0.1 R)
• M10: 7,776,097 km (0.086 R)
• M11: 8,137,975 km (0.067 R)
• M12: 8,463,799 km (0.072 R)
• M13: 10,278,571 km (0.054 R)
• M14: 10,825,500 km (0.068 R)
• M15: 11,106,146 km (0.066 R)
• M16: 13,336,201 km (0.116 R)
• M17: 23,334,575 km (0.041 R)
• M18: 25,542,789 km (0.099 R)
• M19: 34,425,911 km (0.109 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: 211 - 14,150 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit