🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.52

Radius: 1.18

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.42 AU - 0.6 AU

Year: 232 Days

Day: 15.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 35.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.85

Radius: 1.28

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.54 AU - 0.66 AU

Year: 296 Days

Day: 26.4 Hours

Environment

Temp: -128 °C

Axial Tilt: 36 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 73,837,157 km

• M1: 52,658 km (0.036 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.6 AU - 0.64 AU

Year: 310 Days

Day: 41.7 Hours

Environment

Temp: -133 °C

Axial Tilt: 35.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 845

Radius: 9.4

Gravity: 9.56 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.65 AU - 1.03 AU

Year: 489 Days

Day: 5.6 Hours

Environment

Temp: -148 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 73,837,157 km

• M1: 116,986 km (0.072 R)
• M2: 419,472 km (0.1 R)
• M3: 745,446 km (0.025 R)
• M4: 1,304,493 km (0.065 R)
• M5: 2,224,371 km (0.086 R)
• M6: 2,557,675 km (0.047 R)
• M7: 3,004,075 km (0.099 R)
• M8: 4,153,435 km (0.094 R)
• M9: 5,769,242 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 224.3

Radius: 8

Gravity: 3.5 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 2.58 AU - 3.48 AU

Year: 3353 Days

Day: 13.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 73,837,157 km

• M1: 99,483 km (0.078 R)
• M2: 359,184 km (0.115 R)
• M3: 814,560 km (0.118 R)
• M4: 1,256,921 km (0.073 R)
• M5: 1,734,288 km (0.113 R)
• M6: 2,366,489 km (0.111 R)
• M7: 2,622,750 km (0.119 R)
• M8: 3,239,691 km (0.05 R)
• M9: 3,949,982 km (0.115 R)
• M10: 4,634,841 km (0.109 R)
• M11: 5,940,831 km (0.118 R)
• M12: 6,289,842 km (0.082 R)
• M13: 6,785,161 km (0.091 R)
• M14: 7,942,600 km (0.107 R)
• M15: 8,646,907 km (0.098 R)
• M16: 10,427,570 km (0.091 R)
• M17: 15,899,411 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 249.1

Radius: 12.7

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 3.56 AU - 4.28 AU

Year: 4935 Days

Day: 5.8 Hours

Environment

Temp: -206 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 73,837,157 km

• M1: 175,030 km (0.05 R)
• M2: 2,077,615 km (0.093 R)
• M3: 3,139,760 km (0.03 R)
• M4: 6,826,151 km (0.1 R)
• M5: 9,033,318 km (0.068 R)
• M6: 12,727,488 km (0.111 R)
• M7: 16,671,636 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 10.5

Radius: 12.2

Gravity: 0.07 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 3.76 AU - 5.34 AU

Year: 6171 Days

Day: 14.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 73,837,157 km

• M1: 153,338 km (0.105 R)
• M2: 584,628 km (0.119 R)
• M3: 1,083,537 km (0.078 R)
• M4: 1,681,031 km (0.083 R)
• M5: 2,600,460 km (0.101 R)
• M6: 3,250,911 km (0.079 R)
• M7: 3,947,589 km (0.089 R)
• M8: 4,624,369 km (0.091 R)
• M9: 8,529,173 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 363.9

Radius: 6.9

Gravity: 7.64 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 7.05 AU - 10.07 AU

Year: 15924 Days

Day: 20.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 73,837,157 km

• M1: 442,660 km (0.102 R)
• M2: 1,025,493 km (0.105 R)
• M3: 1,428,809 km (0.043 R)
• M4: 7,474,358 km (0.103 R)
• M5: 9,618,245 km (0.057 R)
• M6: 13,301,046 km (0.075 R)
• M7: 22,115,951 km (0.04 R)
• M8: 34,291,871 km (0.117 R)
• M9: 39,000,913 km (0.119 R)
• M10: 39,781,814 km (0.077 R)
• M11: 41,240,393 km (0.113 R)
• M12: 44,829,246 km (0.116 R)
• M13: 49,828,956 km (0.106 R)
• M14: 51,678,734 km (0.096 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 722.4

Radius: 3.1

Gravity: 75.17 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 9.04 AU - 9.96 AU

Year: 18617 Days

Day: 18.9 Hours

Environment

Temp: -238 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 73,837,157 km

• M1: 39,195 km (0.116 R)
• M2: 577,448 km (0.082 R)
• M3: 813,663 km (0.111 R)
• M4: 948,151 km (0.1 R)
• M5: 1,164,171 km (0.066 R)
• M6: 1,365,829 km (0.119 R)
• M7: 2,173,807 km (0.111 R)
• M8: 2,279,872 km (0.038 R)
• M9: 2,964,731 km (0.053 R)
• M10: 3,069,000 km (0.035 R)
• M11: 4,868,663 km (0.106 R)
• M12: 6,113,167 km (0.103 R)
• M13: 8,200,058 km (0.063 R)
• M14: 11,723,836 km (0.107 R)
• M15: 12,723,000 km (0.064 R)
• M16: 12,929,445 km (0.1 R)
• M17: 14,068,333 km (0.088 R)
• M18: 16,300,034 km (0.095 R)
• M19: 16,954,675 km (0.107 R)
• M20: 18,579,756 km (0.084 R)
• M21: 20,212,168 km (0.115 R)
• M22: 21,255,314 km (0.092 R)
• M23: 24,387,594 km (0.102 R)
• M24: 27,013,785 km (0.084 R)
• M25: 27,813,984 km (0.06 R)
• M26: 30,923,974 km (0.104 R)
• M27: 31,799,122 km (0.032 R)
• M28: 38,680,025 km (0.095 R)
• M29: 43,467,606 km (0.11 R)
• M30: 43,623,188 km (0.109 R)
• M31: 44,407,081 km (0.053 R)
• M32: 48,635,165 km (0.108 R)
• M33: 53,658,662 km (0.051 R)
• M34: 57,130,679 km (0.03 R)
• M35: 63,112,050 km (0.111 R)
• M36: 64,114,207 km (0.11 R)
• M37: 64,518,121 km (0.096 R)
• M38: 66,562,675 km (0.107 R)
• M39: 67,392,494 km (0.039 R)
• M40: 72,735,682 km (0.096 R)
• M41: 73,837,171 km (0.105 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 150 - 12,267 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit