🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.96

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.46 AU - 0.64 AU

Year: 263 Days

Day: 29.7 Hours

Environment

Temp: -130 °C

Axial Tilt: 1.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,229,102 km

• M1: 278,252 km (0.081 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.05

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.55 AU - 0.59 AU

Year: 278 Days

Day: 46.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 35.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.61 AU - 0.73 AU

Year: 354 Days

Day: 39.2 Hours

Environment

Temp: -131 °C

Axial Tilt: 13.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 56,229,102 km

• M1: 43,832 km (0.082 R)
• M2: 80,484 km (0.05 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.7

Radius: 13.3

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.82 AU - 0.92 AU

Year: 524 Days

Day: 7.9 Hours

Environment

Temp: -142 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 56,229,102 km

• M1: 165,455 km (0.055 R)
• M2: 579,991 km (0.103 R)
• M3: 1,187,957 km (0.05 R)
• M4: 1,678,039 km (0.107 R)
• M5: 2,490,505 km (0.095 R)
• M6: 2,905,639 km (0.117 R)
• M7: 3,424,295 km (0.036 R)
• M8: 4,199,063 km (0.028 R)
• M9: 4,865,521 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 584.4

Radius: 10.8

Gravity: 5.01 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.89 AU - 1.09 AU

Year: 636 Days

Day: 6.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 56,229,102 km

• M1: 134,488 km (0.116 R)
• M2: 494,421 km (0.107 R)
• M3: 886,667 km (0.112 R)
• M4: 1,450,950 km (0.08 R)
• M5: 2,320,712 km (0.088 R)
• M6: 2,743,775 km (0.092 R)
• M7: 3,508,070 km (0.107 R)
• M8: 4,577,844 km (0.052 R)
• M9: 5,230,989 km (0.087 R)
• M10: 5,670,208 km (0.089 R)
• M11: 6,365,389 km (0.085 R)
• M12: 7,179,800 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 645.4

Radius: 12.6

Gravity: 4.07 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.96 AU - 1.54 AU

Year: 902 Days

Day: 12.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,229,102 km

• M1: 159,322 km (0.06 R)
• M2: 623,823 km (0.082 R)
• M3: 1,596,359 km (0.034 R)
• M4: 2,017,926 km (0.088 R)
• M5: 3,079,921 km (0.106 R)
• M6: 3,583,617 km (0.098 R)
• M7: 4,286,428 km (0.104 R)
• M8: 4,688,397 km (0.074 R)
• M9: 5,245,350 km (0.098 R)
• M10: 6,427,772 km (0.084 R)
• M11: 7,185,784 km (0.093 R)
• M12: 8,279,644 km (0.025 R)
• M13: 8,853,501 km (0.086 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 27

Radius: 8.7

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.03 AU - 1.57 AU

Year: 957 Days

Day: 11.4 Hours

Environment

Temp: -168 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 56,229,102 km

• M1: 114,293 km (0.046 R)
• M2: 411,394 km (0.099 R)
• M3: 780,003 km (0.109 R)
• M4: 1,756,279 km (0.112 R)
• M5: 2,322,208 km (0.052 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377.9

Radius: 12.7

Gravity: 2.34 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 1.23 AU - 1.97 AU

Year: 1307 Days

Day: 14.4 Hours

Environment

Temp: -181 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 56,229,102 km

• M1: 159,621 km (0.094 R)
• M2: 650,601 km (0.071 R)
• M3: 1,280,857 km (0.109 R)
• M4: 1,684,023 km (0.079 R)
• M5: 2,267,754 km (0.098 R)
• M6: 3,263,777 km (0.074 R)
• M7: 3,664,699 km (0.028 R)
• M8: 4,672,091 km (0.072 R)
• M9: 5,203,014 km (0.051 R)
• M10: 6,213,398 km (0.072 R)
• M11: 7,042,170 km (0.117 R)
• M12: 7,569,054 km (0.094 R)
• M13: 8,303,729 km (0.104 R)
• M14: 8,702,108 km (0.1 R)
• M15: 9,480,017 km (0.06 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 722.9

Radius: 10.7

Gravity: 6.31 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 5.37 AU - 6.55 AU

Year: 9395 Days

Day: 14.9 Hours

Environment

Temp: -219 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 56,229,102 km

• M1: 137,331 km (0.062 R)
• M2: 479,162 km (0.082 R)
• M3: 889,060 km (0.107 R)
• M4: 1,225,057 km (0.083 R)
• M5: 1,967,661 km (0.081 R)
• M6: 4,163,758 km (0.095 R)
• M7: 4,501,101 km (0.089 R)
• M8: 4,917,731 km (0.091 R)
• M9: 5,327,629 km (0.053 R)
• M10: 6,002,914 km (0.03 R)
• M11: 7,082,412 km (0.093 R)
• M12: 10,885,339 km (0.068 R)
• M13: 11,311,693 km (0.059 R)
• M14: 12,834,151 km (0.075 R)
• M15: 13,798,459 km (0.116 R)
• M16: 17,410,948 km (0.083 R)
• M17: 17,921,227 km (0.058 R)
• M18: 20,382,111 km (0.034 R)
• M19: 21,030,917 km (0.114 R)
• M20: 23,234,793 km (0.051 R)
• M21: 27,113,567 km (0.105 R)
• M22: 31,618,856 km (0.116 R)
• M23: 32,488,469 km (0.119 R)
• M24: 35,192,749 km (0.104 R)
• M25: 37,921,863 km (0.045 R)
• M26: 42,341,134 km (0.059 R)
• M27: 42,735,175 km (0.052 R)
• M28: 46,392,693 km (0.116 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 455.6

Radius: 3.7

Gravity: 33.28 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 6.52 AU - 10.18 AU

Year: 15579 Days

Day: 20.1 Hours

Environment

Temp: -226 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 56,229,102 km

• M1: 46,076 km (0.047 R)
• M2: 515,963 km (0.107 R)
• M3: 652,396 km (0.09 R)
• M4: 862,133 km (0.077 R)
• M5: 1,115,402 km (0.113 R)
• M6: 1,253,032 km (0.089 R)
• M7: 1,430,455 km (0.084 R)
• M8: 1,578,108 km (0.107 R)
• M9: 3,805,919 km (0.07 R)
• M10: 4,766,936 km (0.108 R)
• M11: 4,930,447 km (0.049 R)
• M12: 5,131,656 km (0.032 R)
• M13: 6,416,103 km (0.096 R)
• M14: 8,037,295 km (0.048 R)
• M15: 8,269,172 km (0.106 R)
• M16: 8,942,063 km (0.099 R)
• M17: 9,547,336 km (0.106 R)
• M18: 9,912,654 km (0.099 R)
• M19: 11,351,786 km (0.114 R)
• M20: 12,000,442 km (0.114 R)
• M21: 12,735,865 km (0.047 R)
• M22: 13,762,555 km (0.118 R)
• M23: 14,912,514 km (0.106 R)
• M24: 15,051,939 km (0.107 R)
• M25: 15,262,573 km (0.11 R)
• M26: 16,125,154 km (0.095 R)
• M27: 19,234,397 km (0.051 R)
• M28: 23,748,213 km (0.089 R)
• M29: 28,704,091 km (0.069 R)
• M30: 30,572,419 km (0.06 R)
• M31: 32,403,497 km (0.095 R)
• M32: 32,637,468 km (0.079 R)
• M33: 40,055,279 km (0.103 R)
• M34: 41,140,162 km (0.098 R)
• M35: 42,663,667 km (0.104 R)
• M36: 45,529,514 km (0.08 R)
• M37: 48,368,283 km (0.034 R)
• M38: 50,691,089 km (0.108 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: 471 - 16,816 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit