🌌 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: 3.09

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.61 AU - 0.65 AU

Year: 323 Days

Day: 40.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 17.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 44,531,053 km

• M1: 247,136 km (0.106 R)
• M2: 397,482 km (0.083 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328.4

Radius: 14.9

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.72 AU - 0.72 AU

Year: 394 Days

Day: 7.1 Hours

Environment

Temp: -135 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 44,531,053 km

• M1: 185,352 km (0.054 R)
• M2: 687,103 km (0.102 R)
• M3: 1,465,311 km (0.11 R)
• M4: 2,034,082 km (0.106 R)
• M5: 3,169,081 km (0.066 R)
• M6: 3,890,592 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942.7

Radius: 12.8

Gravity: 5.75 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 1.97 AU - 2.17 AU

Year: 1923 Days

Day: 10.7 Hours

Environment

Temp: -184 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 44,531,053 km

• M1: 159,172 km (0.045 R)
• M2: 584,030 km (0.072 R)
• M3: 1,539,362 km (0.116 R)
• M4: 1,963,622 km (0.068 R)
• M5: 2,439,792 km (0.086 R)
• M6: 3,136,170 km (0.088 R)
• M7: 3,719,751 km (0.08 R)
• M8: 4,456,969 km (0.049 R)
• M9: 5,015,867 km (0.06 R)
• M10: 5,792,579 km (0.043 R)
• M11: 6,406,529 km (0.107 R)
• M12: 7,496,948 km (0.076 R)
• M13: 7,917,168 km (0.105 R)
• M14: 13,077,846 km (0.099 R)
• M15: 14,001,314 km (0.109 R)
• M16: 14,410,164 km (0.087 R)
• M17: 14,967,865 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 413.7

Radius: 8.1

Gravity: 6.31 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 2.36 AU - 2.46 AU

Year: 2416 Days

Day: 7.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 44,531,053 km

• M1: 100,829 km (0.098 R)
• M2: 375,191 km (0.085 R)
• M3: 646,712 km (0.053 R)
• M4: 904,618 km (0.108 R)
• M5: 1,192,744 km (0.09 R)
• M6: 1,816,866 km (0.056 R)
• M7: 2,087,937 km (0.117 R)
• M8: 2,505,316 km (0.103 R)
• M9: 3,610,245 km (0.108 R)
• M10: 4,061,133 km (0.116 R)
• M11: 4,881,678 km (0.067 R)
• M12: 5,456,582 km (0.058 R)
• M13: 6,402,490 km (0.117 R)
• M14: 6,741,030 km (0.107 R)
• M15: 7,091,388 km (0.071 R)
• M16: 7,453,864 km (0.046 R)
• M17: 9,028,979 km (0.103 R)
• M18: 9,555,414 km (0.061 R)
• M19: 10,067,189 km (0.117 R)
• M20: 11,295,238 km (0.088 R)
• M21: 11,984,285 km (0.077 R)
• M22: 12,499,201 km (0.044 R)
• M23: 12,823,230 km (0.088 R)
• M24: 13,194,532 km (0.084 R)
• M25: 14,307,840 km (0.071 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.6

Radius: 14.3

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 2.67 AU - 4.29 AU

Year: 4192 Days

Day: 13.6 Hours

Environment

Temp: -204 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 44,531,053 km

• M1: 178,171 km (0.115 R)
• M2: 918,681 km (0.081 R)
• M3: 1,403,378 km (0.088 R)
• M4: 2,233,795 km (0.089 R)
• M5: 2,839,068 km (0.046 R)
• M6: 3,334,686 km (0.071 R)
• M7: 4,384,265 km (0.106 R)
• M8: 4,897,385 km (0.103 R)
• M9: 6,373,916 km (0.117 R)
• M10: 7,232,159 km (0.066 R)
• M11: 8,756,711 km (0.081 R)
• M12: 9,296,760 km (0.096 R)
• M13: 9,818,108 km (0.104 R)
• M14: 10,701,633 km (0.072 R)
• M15: 11,319,772 km (0.102 R)
• M16: 12,434,725 km (0.108 R)
• M17: 15,992,162 km (0.047 R)
• M18: 19,782,972 km (0.097 R)
• M19: 20,580,329 km (0.109 R)
• M20: 21,123,818 km (0.11 R)
• M21: 24,060,723 km (0.112 R)
• M22: 25,666,058 km (0.074 R)
• M23: 26,216,728 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 521.9

Radius: 14.7

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 4.06 AU - 5.24 AU

Year: 6474 Days

Day: 7.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 44.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 44,531,053 km

• M1: 217,366 km (0.088 R)
• M2: 691,890 km (0.103 R)
• M3: 1,291,030 km (0.083 R)
• M4: 2,363,198 km (0.099 R)
• M5: 3,292,500 km (0.056 R)
• M6: 4,378,879 km (0.098 R)
• M7: 5,752,637 km (0.093 R)
• M8: 6,572,732 km (0.079 R)
• M9: 7,080,467 km (0.073 R)
• M10: 7,687,685 km (0.058 R)
• M11: 8,213,821 km (0.089 R)
• M12: 10,114,162 km (0.12 R)
• M13: 11,215,053 km (0.069 R)
• M14: 12,042,180 km (0.06 R)
• M15: 17,497,715 km (0.028 R)
• M16: 18,015,922 km (0.111 R)
• M17: 22,009,587 km (0.048 R)
• M18: 23,697,649 km (0.064 R)
• M19: 24,412,577 km (0.113 R)
• M20: 29,552,311 km (0.042 R)
• M21: 30,102,981 km (0.084 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 566.4

Radius: 4.3

Gravity: 30.63 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 4.63 AU - 7.67 AU

Year: 9848 Days

Day: 18.9 Hours

Environment

Temp: -231 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 44,531,053 km

• M1: 54,902 km (0.108 R)
• M2: 225,594 km (0.089 R)
• M3: 594,652 km (0.073 R)
• M4: 748,438 km (0.101 R)
• M5: 1,566,290 km (0.103 R)
• M6: 2,009,847 km (0.118 R)
• M7: 2,252,046 km (0.086 R)
• M8: 2,417,801 km (0.082 R)
• M9: 3,894,182 km (0.072 R)
• M10: 4,188,142 km (0.117 R)
• M11: 4,382,769 km (0.114 R)
• M12: 5,034,118 km (0.042 R)
• M13: 5,546,790 km (0.114 R)
• M14: 6,826,151 km (0.054 R)
• M15: 8,032,957 km (0.067 R)
• M16: 10,348,881 km (0.079 R)
• M17: 11,495,699 km (0.095 R)
• M18: 15,638,513 km (0.096 R)
• M19: 18,370,768 km (0.114 R)
• M20: 22,911,512 km (0.072 R)
• M21: 23,690,618 km (0.063 R)
• M22: 24,131,184 km (0.113 R)
• M23: 24,756,802 km (0.089 R)
• M24: 26,415,543 km (0.031 R)
• M25: 27,853,179 km (0.106 R)
• M26: 28,740,294 km (0.092 R)
• M27: 29,241,148 km (0.114 R)
• M28: 31,303,205 km (0.058 R)
• M29: 32,802,923 km (0.091 R)
• M30: 36,409,429 km (0.029 R)
• M31: 39,281,558 km (0.119 R)
• M32: 41,915,379 km (0.039 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 165 - 15,641 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit