🌌 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: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.54 AU - 0.78 AU

Year: 346 Days

Day: 18.1 Hours

Environment

Temp: -144 °C

Axial Tilt: 29.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 73,826,992 km

• M1: 171,589 km (0.051 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 217.4

Radius: 11.3

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.66 AU - 1.06 AU

Year: 515 Days

Day: 10.5 Hours

Environment

Temp: -159 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 73,826,992 km

• M1: 145,858 km (0.034 R)
• M2: 542,741 km (0.083 R)
• M3: 1,121,236 km (0.052 R)
• M4: 1,631,664 km (0.062 R)
• M5: 1,997,880 km (0.099 R)
• M6: 2,665,984 km (0.056 R)
• M7: 3,139,012 km (0.072 R)
• M8: 3,841,075 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 39.9

Radius: 13.5

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.81 AU - 1.05 AU

Year: 579 Days

Day: 5.5 Hours

Environment

Temp: -155 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 73,826,992 km

• M1: 167,998 km (0.107 R)
• M2: 614,698 km (0.07 R)
• M3: 1,288,038 km (0.029 R)
• M4: 2,047,696 km (0.063 R)
• M5: 2,773,245 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463

Radius: 8.9

Gravity: 5.85 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.87 AU - 1.31 AU

Year: 735 Days

Day: 8.8 Hours

Environment

Temp: -161 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 73,826,992 km

• M1: 110,702 km (0.077 R)
• M2: 391,348 km (0.113 R)
• M3: 759,957 km (0.103 R)
• M4: 1,174,642 km (0.116 R)
• M5: 1,478,177 km (0.086 R)
• M6: 2,016,131 km (0.107 R)
• M7: 2,416,454 km (0.047 R)
• M8: 2,926,882 km (0.063 R)
• M9: 3,586,759 km (0.09 R)
• M10: 4,373,045 km (0.102 R)
• M11: 4,815,256 km (0.118 R)
• M12: 5,235,028 km (0.117 R)
• M13: 5,734,086 km (0.112 R)
• M14: 6,148,173 km (0.04 R)
• M15: 6,703,929 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 529.9

Radius: 8.2

Gravity: 7.88 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.92 AU - 1.3 AU

Year: 755 Days

Day: 7.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 73,826,992 km

• M1: 102,026 km (0.084 R)
• M2: 409,599 km (0.114 R)
• M3: 668,702 km (0.09 R)
• M4: 928,255 km (0.085 R)
• M5: 1,310,178 km (0.084 R)
• M6: 1,736,382 km (0.112 R)
• M7: 2,446,075 km (0.119 R)
• M8: 2,774,741 km (0.038 R)
• M9: 3,454,364 km (0.117 R)
• M10: 4,030,017 km (0.101 R)
• M11: 4,651,596 km (0.11 R)
• M12: 5,106,224 km (0.112 R)
• M13: 5,796,020 km (0.117 R)
• M14: 6,608,187 km (0.056 R)
• M15: 6,902,296 km (0.099 R)
• M16: 7,359,916 km (0.11 R)
• M17: 7,791,207 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 16.7

Radius: 11.9

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 1.06 AU - 1.58 AU

Year: 979 Days

Day: 15 Hours

Environment

Temp: -172 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 73,826,992 km

• M1: 148,102 km (0.093 R)
• M2: 551,567 km (0.079 R)
• M3: 921,822 km (0.099 R)
• M4: 2,165,579 km (0.071 R)
• M5: 2,613,924 km (0.068 R)

Asteroid Belt

Center: 1.79 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 477.4

Radius: 14.6

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 1.89 AU - 2.61 AU

Year: 2179 Days

Day: 5.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 73,826,992 km

• M1: 181,612 km (0.08 R)
• M2: 643,420 km (0.119 R)
• M3: 1,118,842 km (0.051 R)
• M4: 1,576,612 km (0.078 R)
• M5: 3,788,566 km (0.086 R)
• M6: 4,494,369 km (0.09 R)
• M7: 7,097,521 km (0.038 R)
• M8: 8,144,557 km (0.095 R)
• M9: 8,940,268 km (0.045 R)
• M10: 10,161,585 km (0.116 R)
• M11: 12,612,447 km (0.112 R)
• M12: 13,636,594 km (0.1 R)
• M13: 14,233,789 km (0.114 R)
• M14: 15,207,671 km (0.079 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.6

Radius: 8.7

Gravity: 10.78 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 2.28 AU - 2.54 AU

Year: 2416 Days

Day: 14.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 73,826,992 km

• M1: 108,309 km (0.05 R)
• M2: 379,081 km (0.086 R)
• M3: 806,033 km (0.075 R)
• M4: 1,084,884 km (0.093 R)
• M5: 1,666,371 km (0.115 R)
• M6: 2,413,762 km (0.052 R)
• M7: 2,895,616 km (0.052 R)
• M8: 4,892,748 km (0.111 R)
• M9: 5,318,055 km (0.059 R)
• M10: 6,028,794 km (0.037 R)
• M11: 6,352,225 km (0.099 R)
• M12: 6,830,040 km (0.093 R)
• M13: 8,508,828 km (0.087 R)
• M14: 11,932,375 km (0.091 R)
• M15: 15,820,723 km (0.068 R)
• M16: 16,594,144 km (0.113 R)
• M17: 17,392,548 km (0.114 R)
• M18: 18,609,676 km (0.073 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 497

Radius: 4.1

Gravity: 29.57 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 10 AU - 11.3 AU

Year: 22441 Days

Day: 20.5 Hours

Environment

Temp: -236 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 73,826,992 km

• M1: 51,013 km (0.045 R)
• M2: 290,220 km (0.099 R)
• M3: 432,936 km (0.117 R)
• M4: 659,128 km (0.106 R)
• M5: 891,304 km (0.086 R)
• M6: 1,393,055 km (0.12 R)
• M7: 1,740,870 km (0.037 R)
• M8: 2,378,905 km (0.071 R)
• M9: 2,824,557 km (0.087 R)
• M10: 3,787,968 km (0.099 R)
• M11: 4,294,057 km (0.068 R)
• M12: 4,529,076 km (0.098 R)
• M13: 4,667,154 km (0.115 R)
• M14: 5,516,870 km (0.085 R)
• M15: 5,957,735 km (0.046 R)
• M16: 6,729,062 km (0.101 R)
• M17: 10,910,622 km (0.071 R)
• M18: 11,222,084 km (0.092 R)
• M19: 14,297,218 km (0.103 R)
• M20: 14,745,413 km (0.1 R)
• M21: 18,410,711 km (0.067 R)
• M22: 19,300,369 km (0.028 R)
• M23: 20,878,028 km (0.094 R)
• M24: 21,164,957 km (0.057 R)
• M25: 22,841,500 km (0.079 R)
• M26: 24,924,800 km (0.044 R)
• M27: 27,702,683 km (0.102 R)
• M28: 28,633,332 km (0.089 R)
• M29: 35,196,340 km (0.114 R)
• M30: 41,779,394 km (0.105 R)
• M31: 47,469,499 km (0.104 R)
• M32: 51,016,015 km (0.097 R)
• M33: 55,829,925 km (0.075 R)
• M34: 59,584,832 km (0.088 R)
• M35: 60,743,318 km (0.106 R)
• M36: 63,304,733 km (0.068 R)
• M37: 66,554,746 km (0.075 R)
• M38: 69,488,361 km (0.083 R)
• M39: 70,556,639 km (0.094 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 360 - 14,569 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit