🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.57 AU - 0.67 AU

Year: 315 Days

Day: 43.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 21.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 490.7

Radius: 12.1

Gravity: 3.35 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.01 AU - 1.17 AU

Year: 735 Days

Day: 6.7 Hours

Environment

Temp: -166 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 72,875,806 km

• M1: 150,495 km (0.102 R)
• M2: 564,732 km (0.093 R)
• M3: 1,044,792 km (0.068 R)
• M4: 1,459,327 km (0.096 R)
• M5: 1,890,767 km (0.102 R)
• M6: 2,811,842 km (0.092 R)
• M7: 3,349,048 km (0.109 R)
• M8: 4,040,040 km (0.113 R)
• M9: 4,443,206 km (0.1 R)
• M10: 5,706,860 km (0.092 R)
• M11: 6,138,898 km (0.11 R)
• M12: 6,552,536 km (0.058 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 556.1

Radius: 13.4

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.22 AU - 1.5 AU

Year: 1024 Days

Day: 12.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 72,875,806 km

• M1: 166,652 km (0.053 R)
• M2: 768,634 km (0.099 R)
• M3: 1,264,252 km (0.044 R)
• M4: 1,690,007 km (0.079 R)
• M5: 2,630,080 km (0.1 R)
• M6: 3,231,912 km (0.064 R)
• M7: 3,683,249 km (0.052 R)
• M8: 4,558,846 km (0.064 R)
• M9: 5,074,061 km (0.085 R)
• M10: 5,510,138 km (0.054 R)
• M11: 6,545,804 km (0.111 R)
• M12: 7,345,106 km (0.035 R)
• M13: 8,705,100 km (0.036 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 822.9

Radius: 13.2

Gravity: 4.72 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 3.71 AU - 3.85 AU

Year: 4745 Days

Day: 7.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 72,875,806 km

• M1: 164,109 km (0.094 R)
• M2: 612,154 km (0.069 R)
• M3: 1,174,642 km (0.047 R)
• M4: 2,197,443 km (0.095 R)
• M5: 2,684,833 km (0.112 R)
• M6: 3,284,571 km (0.09 R)
• M7: 4,065,023 km (0.089 R)
• M8: 4,728,938 km (0.105 R)
• M9: 6,464,872 km (0.098 R)
• M10: 7,232,309 km (0.102 R)
• M11: 7,692,323 km (0.057 R)
• M12: 9,273,123 km (0.041 R)
• M13: 10,877,261 km (0.043 R)
• M14: 15,194,656 km (0.111 R)
• M15: 15,657,661 km (0.067 R)
• M16: 17,731,686 km (0.056 R)
• M17: 19,572,637 km (0.118 R)
• M18: 20,680,110 km (0.063 R)
• M19: 21,249,330 km (0.054 R)
• M20: 27,360,104 km (0.039 R)
• M21: 28,132,927 km (0.066 R)
• M22: 28,920,410 km (0.061 R)

Asteroid Belt

Center: 4.56 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 5.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604.1

Radius: 12.8

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 4.49 AU - 6.17 AU

Year: 7945 Days

Day: 14.3 Hours

Environment

Temp: -227 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 72,875,806 km

• M1: 159,172 km (0.065 R)
• M2: 571,613 km (0.095 R)
• M3: 1,434,045 km (0.081 R)
• M4: 2,579,516 km (0.054 R)
• M5: 3,068,851 km (0.089 R)
• M6: 4,107,808 km (0.098 R)
• M7: 4,779,502 km (0.104 R)
• M8: 5,307,583 km (0.054 R)
• M9: 6,377,656 km (0.097 R)
• M10: 7,742,737 km (0.109 R)
• M11: 8,431,635 km (0.065 R)
• M12: 11,144,742 km (0.073 R)
• M13: 12,290,961 km (0.115 R)
• M14: 13,342,933 km (0.112 R)
• M15: 18,018,615 km (0.09 R)
• M16: 21,733,579 km (0.068 R)
• M17: 23,519,328 km (0.099 R)
• M18: 24,107,398 km (0.098 R)
• M19: 27,380,898 km (0.1 R)
• M20: 28,408,636 km (0.114 R)
• M21: 29,559,043 km (0.027 R)
• M22: 33,512,317 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 483.6

Radius: 10.5

Gravity: 4.39 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 4.24 AU - 6.62 AU

Year: 8170 Days

Day: 8.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 72,875,806 km

• M1: 131,497 km (0.071 R)
• M2: 460,313 km (0.061 R)
• M3: 1,174,792 km (0.09 R)
• M4: 1,793,529 km (0.119 R)
• M5: 2,138,053 km (0.117 R)
• M6: 2,884,397 km (0.116 R)
• M7: 4,557,350 km (0.071 R)
• M8: 8,989,037 km (0.063 R)
• M9: 9,737,924 km (0.078 R)
• M10: 11,110,783 km (0.044 R)
• M11: 16,447,089 km (0.118 R)
• M12: 20,774,955 km (0.115 R)
• M13: 21,306,776 km (0.098 R)
• M14: 24,860,773 km (0.117 R)
• M15: 25,202,304 km (0.05 R)
• M16: 25,633,595 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 913.9

Radius: 10.1

Gravity: 8.96 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 4.54 AU - 6.32 AU

Year: 8170 Days

Day: 7.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 72,875,806 km

• M1: 125,662 km (0.102 R)
• M2: 466,596 km (0.087 R)
• M3: 852,857 km (0.118 R)
• M4: 1,354,908 km (0.052 R)
• M5: 3,807,715 km (0.106 R)
• M6: 4,151,042 km (0.062 R)
• M7: 6,629,579 km (0.1 R)
• M8: 6,972,458 km (0.083 R)
• M9: 7,448,179 km (0.073 R)
• M10: 9,570,973 km (0.085 R)
• M11: 12,523,885 km (0.118 R)
• M12: 13,834,213 km (0.099 R)
• M13: 15,365,496 km (0.102 R)
• M14: 17,219,762 km (0.084 R)
• M15: 18,163,874 km (0.088 R)
• M16: 24,839,081 km (0.099 R)
• M17: 26,900,091 km (0.06 R)
• M18: 28,468,924 km (0.054 R)
• M19: 29,994,223 km (0.114 R)
• M20: 33,096,435 km (0.102 R)
• M21: 34,554,266 km (0.097 R)
• M22: 36,524,320 km (0.089 R)
• M23: 37,356,982 km (0.103 R)
• M24: 41,325,215 km (0.075 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 895.3

Radius: 7.3

Gravity: 16.8 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 8.1 AU - 9.18 AU

Year: 16398 Days

Day: 20.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 72,875,806 km

• M1: 92,601 km (0.113 R)
• M2: 515,215 km (0.099 R)
• M3: 1,255,575 km (0.101 R)
• M4: 1,637,797 km (0.075 R)
• M5: 2,706,525 km (0.105 R)
• M6: 4,021,939 km (0.053 R)
• M7: 5,368,619 km (0.088 R)
• M8: 5,757,424 km (0.052 R)
• M9: 5,999,623 km (0.092 R)
• M10: 8,918,726 km (0.12 R)
• M11: 9,353,607 km (0.089 R)
• M12: 9,689,155 km (0.045 R)
• M13: 11,424,939 km (0.092 R)
• M14: 14,963,377 km (0.052 R)
• M15: 32,804,419 km (0.068 R)
• M16: 34,498,316 km (0.114 R)
• M17: 38,059,793 km (0.045 R)
• M18: 42,161,168 km (0.108 R)
• M19: 43,539,563 km (0.065 R)
• M20: 44,005,710 km (0.107 R)
• M21: 50,371,249 km (0.105 R)
• M22: 51,401,978 km (0.046 R)
• M23: 53,505,623 km (0.109 R)
• M24: 55,483,756 km (0.084 R)
• M25: 69,015,781 km (0.109 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 439 - 19,762 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit