🌌 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: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.58 AU - 0.68 AU

Year: 328 Days

Day: 30 Hours

Environment

Temp: -138 °C

Axial Tilt: 46.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 75,127,123 km

• M1: 160,818 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 145.4

Radius: 8.9

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.8 AU - 1.06 AU

Year: 588 Days

Day: 12.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 75,127,123 km

• M1: 111,151 km (0.111 R)
• M2: 450,439 km (0.034 R)
• M3: 883,076 km (0.119 R)
• M4: 1,200,074 km (0.105 R)
• M5: 2,228,410 km (0.112 R)
• M6: 2,717,296 km (0.087 R)
• M7: 3,041,923 km (0.118 R)
• M8: 3,349,945 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 797.5

Radius: 8.4

Gravity: 11.3 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 1.61 AU - 2.43 AU

Year: 1883 Days

Day: 6.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 75,127,123 km

• M1: 121,922 km (0.079 R)
• M2: 387,159 km (0.086 R)
• M3: 669,600 km (0.048 R)
• M4: 952,041 km (0.116 R)
• M5: 1,395,299 km (0.05 R)
• M6: 1,948,063 km (0.098 R)
• M7: 4,440,514 km (0.115 R)
• M8: 6,614,919 km (0.032 R)
• M9: 6,967,072 km (0.071 R)
• M10: 10,394,658 km (0.116 R)
• M11: 10,834,027 km (0.068 R)
• M12: 13,134,543 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 941.5

Radius: 12.3

Gravity: 6.22 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 2.43 AU - 2.59 AU

Year: 2609 Days

Day: 7.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 75,127,123 km

• M1: 153,039 km (0.112 R)
• M2: 550,520 km (0.084 R)
• M3: 1,032,525 km (0.064 R)
• M4: 1,546,094 km (0.098 R)
• M5: 2,134,911 km (0.084 R)
• M6: 2,617,813 km (0.082 R)
• M7: 3,387,793 km (0.105 R)
• M8: 3,846,460 km (0.084 R)
• M9: 4,681,067 km (0.087 R)
• M10: 7,405,843 km (0.053 R)
• M11: 8,661,866 km (0.077 R)
• M12: 9,050,671 km (0.1 R)
• M13: 9,749,892 km (0.111 R)
• M14: 10,886,237 km (0.095 R)
• M15: 11,339,818 km (0.114 R)
• M16: 14,776,230 km (0.042 R)
• M17: 15,486,970 km (0.101 R)
• M18: 16,487,780 km (0.114 R)
• M19: 20,116,426 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 80.1

Radius: 9.1

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 2.35 AU - 2.79 AU

Year: 2703 Days

Day: 11.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 75,127,123 km

• M1: 147,803 km (0.084 R)
• M2: 467,643 km (0.111 R)
• M3: 943,813 km (0.091 R)
• M4: 1,390,363 km (0.091 R)
• M5: 2,012,690 km (0.095 R)
• M6: 4,166,450 km (0.112 R)
• M7: 4,621,527 km (0.089 R)
• M8: 8,925,308 km (0.117 R)
• M9: 9,740,317 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.2

Radius: 13.7

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 3.24 AU - 3.84 AU

Year: 4369 Days

Day: 10.7 Hours

Environment

Temp: -208 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 75,127,123 km

• M1: 182,958 km (0.119 R)
• M2: 1,802,355 km (0.106 R)
• M3: 2,379,354 km (0.101 R)
• M4: 2,853,430 km (0.105 R)
• M5: 4,768,133 km (0.118 R)
• M6: 5,556,813 km (0.078 R)
• M7: 6,431,063 km (0.051 R)
• M8: 8,632,994 km (0.098 R)
• M9: 10,617,709 km (0.104 R)
• M10: 11,517,690 km (0.118 R)
• M11: 14,421,534 km (0.087 R)
• M12: 22,315,814 km (0.104 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 862.5

Radius: 8.8

Gravity: 11.14 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 3.22 AU - 4.84 AU

Year: 5307 Days

Day: 6.8 Hours

Environment

Temp: -202 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 75,127,123 km

• M1: 109,506 km (0.076 R)
• M2: 464,651 km (0.066 R)
• M3: 892,351 km (0.045 R)
• M4: 1,166,564 km (0.079 R)
• M5: 1,781,112 km (0.1 R)
• M6: 2,100,205 km (0.058 R)
• M7: 2,561,714 km (0.119 R)
• M8: 3,295,043 km (0.077 R)
• M9: 3,849,602 km (0.034 R)
• M10: 4,261,146 km (0.064 R)
• M11: 5,985,261 km (0.109 R)
• M12: 6,471,903 km (0.081 R)
• M13: 6,880,156 km (0.091 R)
• M14: 8,525,583 km (0.089 R)
• M15: 11,171,221 km (0.081 R)
• M16: 12,316,243 km (0.103 R)
• M17: 12,627,556 km (0.074 R)
• M18: 14,780,120 km (0.089 R)
• M19: 20,659,616 km (0.076 R)
• M20: 22,302,799 km (0.117 R)
• M21: 24,355,132 km (0.083 R)
• M22: 24,928,391 km (0.049 R)
• M23: 25,932,192 km (0.096 R)
• M24: 26,962,772 km (0.058 R)
• M25: 27,488,160 km (0.107 R)
• M26: 28,288,957 km (0.086 R)
• M27: 29,196,867 km (0.114 R)
• M28: 30,406,216 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 524.9

Radius: 4

Gravity: 32.81 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 8.51 AU - 12.55 AU

Year: 22416 Days

Day: 23.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 75,127,123 km

• M1: 49,966 km (0.116 R)
• M2: 238,609 km (0.116 R)
• M3: 1,354,160 km (0.116 R)
• M4: 1,594,115 km (0.079 R)
• M5: 2,222,127 km (0.116 R)
• M6: 2,603,302 km (0.07 R)
• M7: 4,072,652 km (0.073 R)
• M8: 4,469,087 km (0.051 R)
• M9: 4,676,729 km (0.078 R)
• M10: 4,818,697 km (0.081 R)
• M11: 5,732,142 km (0.09 R)
• M12: 6,532,789 km (0.09 R)
• M13: 6,755,241 km (0.116 R)
• M14: 8,721,257 km (0.062 R)
• M15: 12,136,426 km (0.118 R)
• M16: 12,472,722 km (0.102 R)
• M17: 16,024,475 km (0.039 R)
• M18: 17,174,883 km (0.039 R)
• M19: 23,345,346 km (0.116 R)
• M20: 23,865,348 km (0.075 R)
• M21: 26,581,597 km (0.069 R)
• M22: 27,492,498 km (0.097 R)
• M23: 35,952,557 km (0.1 R)
• M24: 37,630,896 km (0.063 R)
• M25: 44,073,328 km (0.114 R)
• M26: 49,148,286 km (0.028 R)
• M27: 59,277,408 km (0.085 R)
• M28: 65,030,942 km (0.048 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 216 - 17,953 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit