🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.55 AU - 0.77 AU

Year: 352 Days

Day: 26 Hours

Environment

Temp: -144 °C

Axial Tilt: 16.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 57,461,017 km

• M1: 397,482 km (0.077 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 36.7

Radius: 9.3

Gravity: 0.42 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.74 AU - 0.8 AU

Year: 443 Days

Day: 6.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 57,461,017 km

• M1: 115,639 km (0.077 R)
• M2: 419,323 km (0.102 R)
• M3: 880,982 km (0.116 R)
• M4: 1,481,617 km (0.114 R)
• M5: 1,899,295 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 64.8

Radius: 12.5

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.71 AU - 0.85 AU

Year: 452 Days

Day: 12 Hours

Environment

Temp: -155 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 57,461,017 km

• M1: 155,582 km (0.112 R)
• M2: 673,789 km (0.077 R)
• M3: 1,281,156 km (0.096 R)
• M4: 2,542,565 km (0.067 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 537.7

Radius: 9.2

Gravity: 6.35 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 4.53 AU - 4.99 AU

Year: 6813 Days

Day: 9 Hours

Environment

Temp: -215 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 57,461,017 km

• M1: 114,592 km (0.088 R)
• M2: 412,741 km (0.11 R)
• M3: 1,092,064 km (0.106 R)
• M4: 1,760,019 km (0.111 R)
• M5: 2,846,099 km (0.078 R)
• M6: 3,223,535 km (0.067 R)
• M7: 3,656,920 km (0.067 R)
• M8: 4,911,896 km (0.106 R)
• M9: 5,368,619 km (0.109 R)
• M10: 6,203,225 km (0.098 R)
• M11: 6,634,815 km (0.064 R)
• M12: 6,980,386 km (0.045 R)
• M13: 7,301,573 km (0.114 R)
• M14: 10,193,749 km (0.079 R)
• M15: 12,172,180 km (0.053 R)
• M16: 12,638,627 km (0.032 R)
• M17: 13,063,036 km (0.091 R)
• M18: 15,151,422 km (0.052 R)
• M19: 16,120,068 km (0.119 R)
• M20: 19,765,170 km (0.107 R)
• M21: 20,773,908 km (0.09 R)
• M22: 21,816,605 km (0.114 R)
• M23: 29,368,007 km (0.039 R)
• M24: 34,132,250 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 369.5

Radius: 8.2

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 4.71 AU - 6.37 AU

Year: 8554 Days

Day: 12.9 Hours

Environment

Temp: -227 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 57,461,017 km

• M1: 102,026 km (0.104 R)
• M2: 551,119 km (0.026 R)
• M3: 1,455,737 km (0.032 R)
• M4: 1,778,868 km (0.109 R)
• M5: 2,087,040 km (0.036 R)
• M6: 2,500,678 km (0.087 R)
• M7: 4,052,307 km (0.034 R)
• M8: 4,405,956 km (0.058 R)
• M9: 6,358,358 km (0.118 R)
• M10: 7,229,317 km (0.083 R)
• M11: 8,256,905 km (0.077 R)
• M12: 9,553,320 km (0.117 R)
• M13: 13,462,013 km (0.091 R)
• M14: 14,424,077 km (0.105 R)
• M15: 20,881,469 km (0.102 R)
• M16: 23,830,941 km (0.075 R)
• M17: 24,568,159 km (0.111 R)
• M18: 25,916,186 km (0.093 R)
• M19: 28,484,033 km (0.103 R)
• M20: 29,500,850 km (0.041 R)
• M21: 31,509,052 km (0.083 R)
• M22: 32,596,478 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 745.5

Radius: 11.7

Gravity: 5.45 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 5.4 AU - 5.9 AU

Year: 8810 Days

Day: 5.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 174.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 57,461,017 km

• M1: 145,559 km (0.116 R)
• M2: 546,182 km (0.054 R)
• M3: 1,126,472 km (0.04 R)
• M4: 2,489,458 km (0.104 R)
• M5: 2,908,033 km (0.08 R)
• M6: 3,637,173 km (0.106 R)
• M7: 4,019,246 km (0.112 R)
• M8: 5,557,411 km (0.032 R)
• M9: 5,962,373 km (0.054 R)
• M10: 7,416,763 km (0.084 R)
• M11: 9,187,852 km (0.062 R)
• M12: 14,790,143 km (0.092 R)
• M13: 15,571,044 km (0.1 R)
• M14: 16,242,589 km (0.077 R)
• M15: 17,357,243 km (0.102 R)
• M16: 20,445,541 km (0.108 R)
• M17: 21,169,445 km (0.12 R)
• M18: 22,414,099 km (0.117 R)
• M19: 22,925,275 km (0.094 R)
• M20: 29,784,936 km (0.118 R)
• M21: 30,924,722 km (0.116 R)
• M22: 31,665,082 km (0.045 R)
• M23: 35,892,120 km (0.084 R)
• M24: 39,980,629 km (0.107 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 676.7

Radius: 6.6

Gravity: 15.53 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 7.1 AU - 7.7 AU

Year: 13206 Days

Day: 22.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 57,461,017 km

• M1: 82,129 km (0.088 R)
• M2: 335,249 km (0.106 R)
• M3: 541,095 km (0.112 R)
• M4: 1,314,816 km (0.074 R)
• M5: 1,892,712 km (0.116 R)
• M6: 2,479,435 km (0.084 R)
• M7: 2,804,062 km (0.059 R)
• M8: 3,083,811 km (0.117 R)
• M9: 3,726,932 km (0.081 R)
• M10: 5,241,311 km (0.102 R)
• M11: 5,486,951 km (0.115 R)
• M12: 5,888,471 km (0.091 R)
• M13: 6,427,772 km (0.119 R)
• M14: 6,791,444 km (0.098 R)
• M15: 8,103,567 km (0.052 R)
• M16: 10,158,743 km (0.116 R)
• M17: 13,559,551 km (0.095 R)
• M18: 14,225,561 km (0.063 R)
• M19: 15,985,729 km (0.029 R)
• M20: 17,339,590 km (0.079 R)
• M21: 17,886,071 km (0.032 R)
• M22: 20,532,009 km (0.119 R)
• M23: 25,071,706 km (0.052 R)
• M24: 26,175,588 km (0.104 R)
• M25: 36,324,308 km (0.037 R)
• M26: 36,578,325 km (0.056 R)
• M27: 37,476,810 km (0.107 R)
• M28: 39,854,518 km (0.112 R)
• M29: 42,190,788 km (0.098 R)
• M30: 45,642,310 km (0.064 R)
• M31: 50,372,894 km (0.071 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 387 - 20,019 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit