🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.59

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.54 AU - 0.58 AU

Year: 275 Days

Day: 35.3 Hours

Environment

Temp: -122 °C

Axial Tilt: 11.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.94

Radius: 0.98

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.54 AU - 0.6 AU

Year: 282 Days

Day: 23 Hours

Environment

Temp: -135 °C

Axial Tilt: 31 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.7

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.56 AU - 0.72 AU

Year: 336 Days

Day: 13.9 Hours

Environment

Temp: -123 °C

Axial Tilt: 38.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 189

Radius: 10.8

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.89 AU - 0.99 AU

Year: 598 Days

Day: 10.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 75,448,293 km

• M1: 134,339 km (0.115 R)
• M2: 475,422 km (0.089 R)
• M3: 832,512 km (0.048 R)
• M4: 1,282,802 km (0.103 R)
• M5: 1,677,441 km (0.12 R)
• M6: 2,059,364 km (0.074 R)
• M7: 2,766,513 km (0.092 R)
• M8: 3,114,628 km (0.096 R)
• M9: 3,768,520 km (0.103 R)
• M10: 4,771,125 km (0.041 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 429.2

Radius: 10.8

Gravity: 3.68 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 2.57 AU - 2.89 AU

Year: 2959 Days

Day: 13 Hours

Environment

Temp: -210 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 75,448,293 km

• M1: 134,488 km (0.046 R)
• M2: 535,411 km (0.076 R)
• M3: 970,741 km (0.099 R)
• M4: 1,622,389 km (0.098 R)
• M5: 2,647,134 km (0.106 R)
• M6: 3,482,489 km (0.056 R)
• M7: 4,380,824 km (0.08 R)
• M8: 5,030,827 km (0.05 R)
• M9: 5,596,157 km (0.077 R)
• M10: 6,047,644 km (0.062 R)
• M11: 6,938,648 km (0.12 R)
• M12: 7,884,107 km (0.088 R)
• M13: 9,600,593 km (0.113 R)
• M14: 10,360,101 km (0.031 R)
• M15: 12,329,109 km (0.032 R)
• M16: 14,029,438 km (0.106 R)
• M17: 17,836,405 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 341.2

Radius: 8.4

Gravity: 4.84 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 2.5 AU - 3.32 AU

Year: 3256 Days

Day: 14.9 Hours

Environment

Temp: -203 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 75,448,293 km

• M1: 104,419 km (0.067 R)
• M2: 415,134 km (0.097 R)
• M3: 723,904 km (0.077 R)
• M4: 1,010,085 km (0.08 R)
• M5: 1,283,550 km (0.102 R)
• M6: 1,777,671 km (0.088 R)
• M7: 3,014,846 km (0.091 R)
• M8: 3,702,547 km (0.072 R)
• M9: 4,511,872 km (0.052 R)
• M10: 5,876,803 km (0.107 R)
• M11: 6,184,974 km (0.117 R)
• M12: 7,233,207 km (0.104 R)
• M13: 9,156,586 km (0.095 R)
• M14: 9,712,791 km (0.094 R)
• M15: 12,082,870 km (0.118 R)
• M16: 12,414,379 km (0.102 R)
• M17: 17,931,250 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 916.3

Radius: 15

Gravity: 4.07 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 4.7 AU - 6.88 AU

Year: 9140 Days

Day: 13 Hours

Environment

Temp: -224 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 75,448,293 km

• M1: 186,549 km (0.068 R)
• M2: 714,180 km (0.081 R)
• M3: 1,286,093 km (0.119 R)
• M4: 1,810,284 km (0.088 R)
• M5: 2,403,439 km (0.11 R)
• M6: 3,148,586 km (0.094 R)
• M7: 4,098,982 km (0.094 R)
• M8: 5,564,592 km (0.101 R)
• M9: 6,088,035 km (0.097 R)
• M10: 6,759,729 km (0.053 R)
• M11: 7,817,237 km (0.089 R)
• M12: 9,029,428 km (0.119 R)
• M13: 10,677,249 km (0.106 R)
• M14: 11,434,064 km (0.034 R)
• M15: 11,996,403 km (0.09 R)
• M16: 14,759,027 km (0.111 R)
• M17: 16,465,041 km (0.062 R)
• M18: 27,308,942 km (0.093 R)
• M19: 27,809,347 km (0.089 R)
• M20: 29,661,817 km (0.119 R)
• M21: 31,595,070 km (0.113 R)
• M22: 37,160,111 km (0.12 R)
• M23: 39,278,267 km (0.078 R)
• M24: 42,270,674 km (0.109 R)
• M25: 46,968,196 km (0.05 R)
• M26: 48,706,075 km (0.115 R)
• M27: 49,739,347 km (0.094 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 153.3

Radius: 6.1

Gravity: 4.12 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 5.58 AU - 6.58 AU

Year: 9835 Days

Day: 23.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 75,448,293 km

• M1: 75,846 km (0.117 R)
• M2: 308,920 km (0.103 R)
• M3: 503,247 km (0.08 R)
• M4: 843,134 km (0.026 R)
• M5: 1,982,621 km (0.1 R)
• M6: 2,422,289 km (0.114 R)
• M7: 2,674,212 km (0.12 R)
• M8: 3,250,313 km (0.1 R)
• M9: 4,825,579 km (0.064 R)
• M10: 5,308,181 km (0.098 R)
• M11: 6,245,113 km (0.095 R)
• M12: 7,460,296 km (0.034 R)
• M13: 8,670,393 km (0.11 R)
• M14: 10,048,639 km (0.105 R)
• M15: 12,626,659 km (0.106 R)
• M16: 14,717,439 km (0.048 R)
• M17: 17,333,307 km (0.062 R)
• M18: 20,175,367 km (0.07 R)
• M19: 25,392,294 km (0.085 R)
• M20: 26,598,950 km (0.095 R)
• M21: 28,351,788 km (0.118 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 475.4

Radius: 5.6

Gravity: 15.16 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 9.91 AU - 11.95 AU

Year: 23705 Days

Day: 16.8 Hours

Environment

Temp: -227 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 75,448,293 km

• M1: 69,713 km (0.068 R)
• M2: 267,780 km (0.105 R)
• M3: 594,801 km (0.117 R)
• M4: 1,010,982 km (0.115 R)
• M5: 1,586,485 km (0.057 R)
• M6: 2,293,635 km (0.119 R)
• M7: 2,705,328 km (0.115 R)
• M8: 3,138,115 km (0.059 R)
• M9: 3,385,250 km (0.093 R)
• M10: 3,645,401 km (0.054 R)
• M11: 4,205,795 km (0.1 R)
• M12: 4,472,528 km (0.071 R)
• M13: 5,938,138 km (0.082 R)
• M14: 6,757,037 km (0.049 R)
• M15: 8,883,720 km (0.092 R)
• M16: 10,853,026 km (0.089 R)
• M17: 11,873,284 km (0.065 R)
• M18: 18,034,472 km (0.047 R)
• M19: 18,296,568 km (0.065 R)
• M20: 18,828,238 km (0.113 R)
• M21: 19,007,756 km (0.067 R)
• M22: 19,188,320 km (0.043 R)
• M23: 20,675,174 km (0.115 R)
• M24: 23,149,223 km (0.119 R)
• M25: 34,081,836 km (0.043 R)
• M26: 35,566,295 km (0.114 R)
• M27: 36,672,572 km (0.057 R)
• M28: 37,517,201 km (0.074 R)
• M29: 43,014,624 km (0.093 R)
• M30: 44,111,625 km (0.096 R)
• M31: 47,183,318 km (0.119 R)
• M32: 50,221,950 km (0.028 R)
• M33: 64,901,690 km (0.106 R)
• M34: 70,150,182 km (0.07 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: 158 - 19,444 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit