🌌 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: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.53 AU - 0.57 AU

Year: 263 Days

Day: 47.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 19 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 727.8

Radius: 8.3

Gravity: 10.56 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.86 AU - 1.04 AU

Year: 598 Days

Day: 12.8 Hours

Environment

Temp: -153 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 54,319,946 km

• M1: 103,223 km (0.078 R)
• M2: 578,794 km (0.113 R)
• M3: 944,561 km (0.068 R)
• M4: 1,251,685 km (0.087 R)
• M5: 1,680,433 km (0.085 R)
• M6: 1,956,142 km (0.074 R)
• M7: 2,242,921 km (0.109 R)
• M8: 2,798,976 km (0.1 R)
• M9: 3,189,726 km (0.102 R)
• M10: 4,214,471 km (0.081 R)
• M11: 4,959,768 km (0.079 R)
• M12: 5,372,957 km (0.104 R)
• M13: 5,679,334 km (0.072 R)
• M14: 6,112,419 km (0.081 R)
• M15: 6,834,379 km (0.101 R)
• M16: 7,129,984 km (0.102 R)
• M17: 7,456,257 km (0.087 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 334

Radius: 10.1

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.86 AU - 1.1 AU

Year: 626 Days

Day: 12 Hours

Environment

Temp: -159 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 54,319,946 km

• M1: 125,662 km (0.104 R)
• M2: 527,033 km (0.1 R)
• M3: 963,709 km (0.113 R)
• M4: 1,346,381 km (0.087 R)
• M5: 2,254,739 km (0.11 R)
• M6: 2,592,830 km (0.069 R)
• M7: 3,504,629 km (0.118 R)
• M8: 3,843,468 km (0.098 R)
• M9: 5,010,182 km (0.103 R)
• M10: 5,574,465 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 430.6

Radius: 9.9

Gravity: 4.39 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.94 AU - 1.16 AU

Year: 695 Days

Day: 6.5 Hours

Environment

Temp: -158 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 54,319,946 km

• M1: 123,119 km (0.088 R)
• M2: 543,190 km (0.06 R)
• M3: 872,156 km (0.096 R)
• M4: 1,214,286 km (0.062 R)
• M5: 1,787,096 km (0.118 R)
• M6: 2,182,334 km (0.117 R)
• M7: 2,614,522 km (0.062 R)
• M8: 2,975,651 km (0.08 R)
• M9: 3,332,741 km (0.118 R)
• M10: 3,652,282 km (0.113 R)
• M11: 3,992,169 km (0.087 R)
• M12: 4,993,128 km (0.113 R)
• M13: 5,535,121 km (0.092 R)
• M14: 6,003,811 km (0.093 R)
• M15: 6,479,383 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 216.8

Radius: 9.8

Gravity: 2.26 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.03 AU - 1.41 AU

Year: 870 Days

Day: 7.6 Hours

Environment

Temp: -161 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 54,319,946 km

• M1: 122,820 km (0.093 R)
• M2: 427,850 km (0.077 R)
• M3: 981,362 km (0.089 R)
• M4: 1,400,984 km (0.089 R)
• M5: 1,786,797 km (0.029 R)
• M6: 2,170,964 km (0.078 R)
• M7: 2,539,573 km (0.09 R)
• M8: 3,528,116 km (0.068 R)
• M9: 4,468,488 km (0.11 R)
• M10: 5,567,883 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 923.1

Radius: 14.7

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.68 AU - 2.74 AU

Year: 2121 Days

Day: 11.1 Hours

Environment

Temp: -193 °C

Axial Tilt: 158 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 54,319,946 km

• M1: 182,809 km (0.12 R)
• M2: 647,160 km (0.115 R)
• M3: 1,197,980 km (0.025 R)
• M4: 2,057,868 km (0.101 R)
• M5: 2,789,851 km (0.107 R)
• M6: 3,654,676 km (0.109 R)
• M7: 4,150,892 km (0.048 R)
• M8: 5,094,406 km (0.066 R)
• M9: 5,994,985 km (0.054 R)
• M10: 6,999,385 km (0.08 R)
• M11: 7,739,745 km (0.091 R)
• M12: 8,499,104 km (0.078 R)
• M13: 9,100,936 km (0.038 R)
• M14: 10,241,171 km (0.081 R)
• M15: 11,514,698 km (0.037 R)
• M16: 14,515,930 km (0.111 R)
• M17: 16,222,393 km (0.106 R)
• M18: 17,308,623 km (0.068 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 523.8

Radius: 5.2

Gravity: 19.37 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 6.99 AU - 8.41 AU

Year: 13796 Days

Day: 17.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 54,319,946 km

• M1: 64,626 km (0.067 R)
• M2: 282,740 km (0.057 R)
• M3: 460,761 km (0.058 R)
• M4: 690,993 km (0.094 R)
• M5: 1,429,408 km (0.115 R)
• M6: 1,809,386 km (0.052 R)
• M7: 3,041,774 km (0.096 R)
• M8: 8,799,197 km (0.106 R)
• M9: 9,091,362 km (0.088 R)
• M10: 9,746,750 km (0.08 R)
• M11: 10,760,425 km (0.051 R)
• M12: 11,901,408 km (0.025 R)
• M13: 12,501,146 km (0.106 R)
• M14: 14,691,109 km (0.03 R)
• M15: 15,241,330 km (0.102 R)
• M16: 19,075,823 km (0.115 R)
• M17: 34,333,908 km (0.064 R)
• M18: 45,272,205 km (0.102 R)
• M19: 53,349,144 km (0.038 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: 360 - 16,386 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit