🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.76

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.43 AU - 0.65 AU

Year: 256 Days

Day: 16.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 39.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,154,616 km

• M1: 110,702 km (0.108 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.08

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.53 AU - 0.57 AU

Year: 263 Days

Day: 47.7 Hours

Environment

Temp: -113 °C

Axial Tilt: 38.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 51,154,616 km

• M1: 73,602 km (0.101 R)
• M2: 204,949 km (0.077 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.4

Radius: 1.14

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.5 AU - 0.82 AU

Year: 346 Days

Day: 27.2 Hours

Environment

Temp: -128 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 90.2

Radius: 13.3

Gravity: 0.51 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.85 AU - 1.25 AU

Year: 695 Days

Day: 11.2 Hours

Environment

Temp: -163 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 51,154,616 km

• M1: 165,455 km (0.042 R)
• M2: 1,058,854 km (0.115 R)
• M3: 1,957,189 km (0.057 R)
• M4: 2,888,735 km (0.066 R)
• M5: 3,708,980 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 438.7

Radius: 9.8

Gravity: 4.57 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.41 AU - 2.23 AU

Year: 1585 Days

Day: 11.5 Hours

Environment

Temp: -180 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 51,154,616 km

• M1: 127,757 km (0.116 R)
• M2: 564,283 km (0.086 R)
• M3: 1,061,247 km (0.03 R)
• M4: 1,413,999 km (0.057 R)
• M5: 2,340,608 km (0.093 R)
• M6: 2,991,060 km (0.064 R)
• M7: 4,593,552 km (0.102 R)
• M8: 5,939,484 km (0.091 R)
• M9: 6,898,257 km (0.112 R)
• M10: 7,273,598 km (0.113 R)
• M11: 7,583,864 km (0.105 R)
• M12: 9,542,549 km (0.046 R)
• M13: 10,589,584 km (0.096 R)
• M14: 11,192,015 km (0.046 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 978.2

Radius: 14.2

Gravity: 4.85 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 4.14 AU - 6.32 AU

Year: 7723 Days

Day: 11.4 Hours

Environment

Temp: -209 °C

Axial Tilt: 157.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 51,154,616 km

• M1: 181,313 km (0.062 R)
• M2: 875,297 km (0.061 R)
• M3: 1,338,452 km (0.062 R)
• M4: 1,862,942 km (0.11 R)
• M5: 3,411,430 km (0.092 R)
• M6: 3,901,961 km (0.045 R)
• M7: 4,411,791 km (0.038 R)
• M8: 5,308,032 km (0.092 R)
• M9: 6,394,561 km (0.119 R)
• M10: 7,997,652 km (0.06 R)
• M11: 9,098,692 km (0.098 R)
• M12: 10,910,771 km (0.114 R)
• M13: 12,663,161 km (0.103 R)
• M14: 18,740,424 km (0.1 R)
• M15: 20,201,248 km (0.073 R)
• M16: 26,148,511 km (0.059 R)
• M17: 28,069,198 km (0.057 R)
• M18: 29,164,853 km (0.063 R)
• M19: 29,876,789 km (0.105 R)
• M20: 33,390,394 km (0.086 R)
• M21: 34,057,750 km (0.087 R)
• M22: 35,764,662 km (0.097 R)
• M23: 36,346,149 km (0.043 R)
• M24: 42,513,172 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 166.8

Radius: 10.5

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 4.75 AU - 6.15 AU

Year: 8215 Days

Day: 9.4 Hours

Environment

Temp: -212 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 51,154,616 km

• M1: 130,898 km (0.104 R)
• M2: 510,129 km (0.111 R)
• M3: 1,194,090 km (0.077 R)
• M4: 1,866,084 km (0.075 R)
• M5: 2,417,202 km (0.05 R)
• M6: 3,357,126 km (0.078 R)
• M7: 3,825,068 km (0.067 R)
• M8: 4,382,918 km (0.041 R)
• M9: 6,386,931 km (0.038 R)
• M10: 6,819,569 km (0.086 R)
• M11: 7,675,418 km (0.105 R)
• M12: 8,749,979 km (0.059 R)
• M13: 10,168,616 km (0.113 R)
• M14: 13,059,745 km (0.086 R)
• M15: 13,456,029 km (0.083 R)
• M16: 17,156,033 km (0.082 R)
• M17: 17,933,494 km (0.106 R)
• M18: 20,739,650 km (0.064 R)
• M19: 21,621,829 km (0.097 R)
• M20: 22,670,660 km (0.078 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 803.1

Radius: 3.4

Gravity: 69.47 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 5.49 AU - 8.41 AU

Year: 11830 Days

Day: 16 Hours

Environment

Temp: -232 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 51,154,616 km

• M1: 42,336 km (0.069 R)
• M2: 197,320 km (0.107 R)
• M3: 377,286 km (0.085 R)
• M4: 536,159 km (0.109 R)
• M5: 677,230 km (0.091 R)
• M6: 784,790 km (0.11 R)
• M7: 1,058,255 km (0.111 R)
• M8: 1,928,317 km (0.087 R)
• M9: 2,072,529 km (0.113 R)
• M10: 4,050,961 km (0.092 R)
• M11: 4,821,839 km (0.071 R)
• M12: 5,832,971 km (0.086 R)
• M13: 6,811,490 km (0.073 R)
• M14: 9,963,368 km (0.063 R)
• M15: 11,410,428 km (0.032 R)
• M16: 12,552,458 km (0.119 R)
• M17: 13,376,294 km (0.092 R)
• M18: 16,136,674 km (0.031 R)
• M19: 16,357,779 km (0.12 R)
• M20: 17,805,587 km (0.089 R)
• M21: 23,401,894 km (0.066 R)
• M22: 25,833,308 km (0.047 R)
• M23: 26,748,249 km (0.108 R)
• M24: 27,161,737 km (0.093 R)
• M25: 29,953,982 km (0.104 R)
• M26: 30,963,468 km (0.063 R)
• M27: 34,006,738 km (0.095 R)
• M28: 36,226,471 km (0.102 R)
• M29: 37,629,400 km (0.111 R)
• M30: 37,758,802 km (0.115 R)
• M31: 38,935,987 km (0.094 R)
• M32: 39,734,242 km (0.067 R)
• M33: 41,500,992 km (0.101 R)
• M34: 41,916,127 km (0.048 R)
• M35: 45,482,989 km (0.034 R)
• M36: 47,868,925 km (0.089 R)
• M37: 48,478,237 km (0.109 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 229.3

Radius: 3.1

Gravity: 23.86 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 7.3 AU - 11.8 AU

Year: 19055 Days

Day: 21.4 Hours

Environment

Temp: -226 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 51,154,616 km

• M1: 172,935 km (0.112 R)
• M2: 505,192 km (0.082 R)
• M3: 886,068 km (0.03 R)
• M4: 1,197,082 km (0.112 R)
• M5: 3,047,458 km (0.078 R)
• M6: 6,275,930 km (0.086 R)
• M7: 10,536,776 km (0.088 R)
• M8: 12,398,672 km (0.116 R)
• M9: 14,601,051 km (0.1 R)
• M10: 19,598,518 km (0.117 R)
• M11: 21,516,961 km (0.036 R)
• M12: 26,703,818 km (0.082 R)
• M13: 26,803,301 km (0.094 R)
• M14: 29,371,896 km (0.052 R)
• M15: 29,584,176 km (0.104 R)
• M16: 33,698,566 km (0.095 R)
• M17: 35,952,407 km (0.087 R)
• M18: 39,841,952 km (0.08 R)
• M19: 40,625,845 km (0.1 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 283 - 13,810 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit