🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.6 AU - 0.66 AU

Year: 328 Days

Day: 23.4 Hours

Environment

Temp: -129 °C

Axial Tilt: 0.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 94,030,907 km

• M1: 790,026 km (0.068 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 916.2

Radius: 14.4

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.84 AU - 1.16 AU

Year: 656 Days

Day: 7.1 Hours

Environment

Temp: -166 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 94,030,907 km

• M1: 179,069 km (0.056 R)
• M2: 666,608 km (0.118 R)
• M3: 1,243,158 km (0.052 R)
• M4: 2,060,262 km (0.106 R)
• M5: 3,113,880 km (0.068 R)
• M6: 3,959,556 km (0.076 R)
• M7: 5,271,979 km (0.074 R)
• M8: 6,029,093 km (0.088 R)
• M9: 6,580,362 km (0.066 R)
• M10: 7,482,138 km (0.087 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 503.9

Radius: 9.2

Gravity: 5.95 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.92 AU - 1.2 AU

Year: 716 Days

Day: 10.9 Hours

Environment

Temp: -163 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 94,030,907 km

• M1: 117,584 km (0.108 R)
• M2: 429,346 km (0.094 R)
• M3: 735,872 km (0.086 R)
• M4: 1,094,608 km (0.103 R)
• M5: 1,555,070 km (0.119 R)
• M6: 2,013,139 km (0.115 R)
• M7: 2,822,164 km (0.106 R)
• M8: 3,288,460 km (0.087 R)
• M9: 3,750,119 km (0.07 R)
• M10: 4,314,702 km (0.112 R)
• M11: 4,657,730 km (0.047 R)
• M12: 5,086,477 km (0.075 R)
• M13: 6,119,002 km (0.104 R)
• M14: 6,695,253 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 858.2

Radius: 14.9

Gravity: 3.87 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 1.34 AU - 1.54 AU

Year: 1134 Days

Day: 5.3 Hours

Environment

Temp: -182 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 94,030,907 km

• M1: 185,352 km (0.108 R)
• M2: 793,916 km (0.029 R)
• M3: 1,553,424 km (0.115 R)
• M4: 2,278,226 km (0.079 R)
• M5: 3,025,617 km (0.073 R)
• M6: 5,113,255 km (0.108 R)
• M7: 6,732,503 km (0.118 R)
• M8: 7,478,547 km (0.073 R)
• M9: 8,989,785 km (0.087 R)
• M10: 10,179,238 km (0.056 R)
• M11: 10,928,424 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463.9

Radius: 12.6

Gravity: 2.92 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.42 AU - 2.04 AU

Year: 1493 Days

Day: 14.1 Hours

Environment

Temp: -181 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 94,030,907 km

• M1: 156,629 km (0.094 R)
• M2: 632,500 km (0.066 R)
• M3: 1,540,260 km (0.096 R)
• M4: 1,936,544 km (0.115 R)
• M5: 2,460,885 km (0.071 R)
• M6: 3,547,714 km (0.063 R)
• M7: 4,428,995 km (0.087 R)
• M8: 5,897,597 km (0.103 R)
• M9: 8,313,453 km (0.071 R)
• M10: 10,051,780 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 521.3

Radius: 9.2

Gravity: 6.16 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 3.06 AU - 4.54 AU

Year: 4859 Days

Day: 5.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 94,030,907 km

• M1: 114,442 km (0.063 R)
• M2: 437,873 km (0.104 R)
• M3: 834,457 km (0.118 R)
• M4: 1,136,196 km (0.106 R)
• M5: 1,445,863 km (0.038 R)
• M6: 1,877,304 km (0.117 R)
• M7: 2,240,976 km (0.101 R)
• M8: 2,822,613 km (0.102 R)
• M9: 3,283,224 km (0.112 R)
• M10: 3,901,662 km (0.056 R)
• M11: 4,498,707 km (0.119 R)
• M12: 5,181,771 km (0.103 R)
• M13: 5,788,091 km (0.107 R)
• M14: 6,288,496 km (0.091 R)
• M15: 7,274,944 km (0.109 R)
• M16: 8,658,575 km (0.036 R)
• M17: 12,031,708 km (0.086 R)
• M18: 16,539,241 km (0.071 R)
• M19: 17,912,400 km (0.118 R)
• M20: 19,881,108 km (0.119 R)
• M21: 20,748,177 km (0.118 R)
• M22: 23,944,635 km (0.093 R)
• M23: 25,542,939 km (0.107 R)
• M24: 25,855,299 km (0.111 R)
• M25: 26,887,973 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 964.2

Radius: 12.3

Gravity: 6.37 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 4.39 AU - 5.25 AU

Year: 6942 Days

Day: 6.5 Hours

Environment

Temp: -216 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 94,030,907 km

• M1: 153,487 km (0.117 R)
• M2: 656,884 km (0.113 R)
• M3: 1,285,943 km (0.108 R)
• M4: 2,623,049 km (0.101 R)
• M5: 3,023,971 km (0.076 R)
• M6: 3,512,708 km (0.119 R)
• M7: 4,565,577 km (0.098 R)
• M8: 5,242,508 km (0.103 R)
• M9: 7,210,917 km (0.096 R)
• M10: 9,216,874 km (0.116 R)
• M11: 9,771,733 km (0.119 R)
• M12: 10,695,649 km (0.099 R)
• M13: 15,685,337 km (0.109 R)
• M14: 17,295,608 km (0.038 R)
• M15: 18,719,481 km (0.085 R)
• M16: 19,385,191 km (0.11 R)
• M17: 19,990,015 km (0.058 R)
• M18: 20,920,963 km (0.052 R)
• M19: 21,637,986 km (0.1 R)
• M20: 23,374,667 km (0.072 R)
• M21: 24,233,658 km (0.074 R)
• M22: 24,935,871 km (0.091 R)
• M23: 26,472,989 km (0.07 R)
• M24: 29,338,386 km (0.108 R)
• M25: 30,337,850 km (0.069 R)
• M26: 31,775,037 km (0.092 R)
• M27: 32,404,544 km (0.114 R)
• M28: 34,895,499 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 992

Radius: 6.4

Gravity: 24.22 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 8.61 AU - 12.71 AU

Year: 22832 Days

Day: 19.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 94,030,907 km

• M1: 79,586 km (0.053 R)
• M2: 286,031 km (0.037 R)
• M3: 645,964 km (0.075 R)
• M4: 912,846 km (0.118 R)
• M5: 1,237,623 km (0.062 R)
• M6: 3,455,860 km (0.085 R)
• M7: 4,648,155 km (0.086 R)
• M8: 10,085,140 km (0.108 R)
• M9: 10,340,504 km (0.113 R)
• M10: 11,964,987 km (0.086 R)
• M11: 13,289,826 km (0.115 R)
• M12: 14,466,413 km (0.053 R)
• M13: 15,540,825 km (0.038 R)
• M14: 15,967,927 km (0.097 R)
• M15: 17,024,836 km (0.043 R)
• M16: 17,662,572 km (0.095 R)
• M17: 21,615,247 km (0.089 R)
• M18: 21,827,077 km (0.052 R)
• M19: 23,016,979 km (0.059 R)
• M20: 24,593,142 km (0.114 R)
• M21: 28,845,761 km (0.114 R)
• M22: 29,102,620 km (0.106 R)
• M23: 40,513,347 km (0.12 R)
• M24: 43,643,384 km (0.116 R)
• M25: 43,981,924 km (0.078 R)
• M26: 48,544,359 km (0.094 R)
• M27: 54,188,986 km (0.112 R)
• M28: 56,564,152 km (0.047 R)
• M29: 57,574,087 km (0.073 R)
• M30: 60,255,778 km (0.096 R)
• M31: 71,581,085 km (0.102 R)
• M32: 77,617,060 km (0.029 R)
• M33: 80,631,158 km (0.113 R)
• M34: 80,885,774 km (0.093 R)
• M35: 84,244,994 km (0.107 R)
• M36: 85,297,116 km (0.114 R)
• M37: 90,689,072 km (0.072 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 509 - 18,606 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit