🌌 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: 0.59

Radius: 0.81

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.4 AU - 0.62 AU

Year: 235 Days

Day: 12.3 Hours

Environment

Temp: -117 °C

Axial Tilt: 12.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 38,853,629 km

• M1: 21,991 km (0.096 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 83.6

Radius: 12.3

Gravity: 0.55 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.62 AU - 0.74 AU

Year: 362 Days

Day: 5.8 Hours

Environment

Temp: -131 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 38,853,629 km

• M1: 153,039 km (0.075 R)
• M2: 553,811 km (0.09 R)
• M3: 985,850 km (0.117 R)
• M4: 1,641,238 km (0.082 R)
• M5: 2,091,378 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 654.7

Radius: 9.9

Gravity: 6.68 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.88 AU - 0.94 AU

Year: 561 Days

Day: 13.3 Hours

Environment

Temp: -161 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,853,629 km

• M1: 123,119 km (0.068 R)
• M2: 467,194 km (0.043 R)
• M3: 779,854 km (0.109 R)
• M4: 1,448,257 km (0.044 R)
• M5: 1,845,888 km (0.107 R)
• M6: 2,700,690 km (0.086 R)
• M7: 3,484,583 km (0.075 R)
• M8: 4,250,225 km (0.068 R)
• M9: 4,767,535 km (0.08 R)
• M10: 5,292,174 km (0.115 R)
• M11: 5,621,738 km (0.099 R)
• M12: 6,076,067 km (0.071 R)
• M13: 6,594,274 km (0.035 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 626.8

Radius: 13

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.92 AU - 2.5 AU

Year: 2121 Days

Day: 10.8 Hours

Environment

Temp: -187 °C

Axial Tilt: 49.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 38,853,629 km

• M1: 161,715 km (0.086 R)
• M2: 678,875 km (0.116 R)
• M3: 1,324,689 km (0.075 R)
• M4: 1,788,443 km (0.115 R)
• M5: 2,285,107 km (0.12 R)
• M6: 2,728,216 km (0.039 R)
• M7: 3,326,608 km (0.085 R)
• M8: 3,955,667 km (0.074 R)
• M9: 4,809,871 km (0.109 R)
• M10: 5,593,016 km (0.04 R)
• M11: 6,722,928 km (0.075 R)
• M12: 7,243,529 km (0.061 R)
• M13: 9,841,595 km (0.089 R)
• M14: 10,843,452 km (0.09 R)
• M15: 11,369,289 km (0.102 R)
• M16: 12,635,485 km (0.098 R)
• M17: 13,218,169 km (0.058 R)
• M18: 13,905,870 km (0.109 R)
• M19: 14,753,492 km (0.095 R)
• M20: 16,404,903 km (0.038 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 757.1

Radius: 9.2

Gravity: 8.94 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.76 AU - 2.7 AU

Year: 2150 Days

Day: 10.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 38,853,629 km

• M1: 114,891 km (0.055 R)
• M2: 425,008 km (0.097 R)
• M3: 1,724,863 km (0.105 R)
• M4: 2,093,323 km (0.063 R)
• M5: 2,472,554 km (0.109 R)
• M6: 3,184,939 km (0.083 R)
• M7: 3,912,583 km (0.105 R)
• M8: 4,790,722 km (0.113 R)
• M9: 6,493,296 km (0.101 R)
• M10: 8,057,491 km (0.069 R)
• M11: 8,794,709 km (0.111 R)
• M12: 9,965,911 km (0.096 R)
• M13: 10,626,535 km (0.064 R)
• M14: 12,075,839 km (0.108 R)
• M15: 12,912,091 km (0.104 R)
• M16: 14,981,180 km (0.098 R)
• M17: 16,646,054 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29

Radius: 11

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 3.16 AU - 4.7 AU

Year: 5030 Days

Day: 7.2 Hours

Environment

Temp: -204 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 38,853,629 km

• M1: 136,882 km (0.115 R)
• M2: 2,646,686 km (0.07 R)
• M3: 5,950,854 km (0.069 R)
• M4: 7,341,815 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 283.9

Radius: 13.8

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 3.8 AU - 5.88 AU

Year: 6875 Days

Day: 5.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 38,853,629 km

• M1: 172,337 km (0.096 R)
• M2: 603,927 km (0.074 R)
• M3: 1,357,900 km (0.025 R)
• M4: 1,929,065 km (0.081 R)
• M5: 2,609,735 km (0.079 R)
• M6: 4,244,092 km (0.072 R)
• M7: 6,797,428 km (0.116 R)
• M8: 7,910,735 km (0.051 R)
• M9: 9,459,522 km (0.034 R)
• M10: 10,200,032 km (0.109 R)
• M11: 13,301,046 km (0.12 R)
• M12: 13,968,552 km (0.072 R)
• M13: 14,604,343 km (0.103 R)
• M14: 16,805,376 km (0.103 R)
• M15: 22,068,678 km (0.101 R)
• M16: 24,573,245 km (0.094 R)
• M17: 25,815,057 km (0.098 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 753

Radius: 10.5

Gravity: 6.83 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 3.82 AU - 5.94 AU

Year: 6961 Days

Day: 10.7 Hours

Environment

Temp: -212 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 38,853,629 km

• M1: 146,905 km (0.084 R)
• M2: 571,613 km (0.028 R)
• M3: 1,497,026 km (0.097 R)
• M4: 2,481,081 km (0.108 R)
• M5: 2,838,620 km (0.112 R)
• M6: 3,230,865 km (0.089 R)
• M7: 4,686,303 km (0.086 R)
• M8: 6,262,017 km (0.082 R)
• M9: 6,894,667 km (0.117 R)
• M10: 7,226,624 km (0.053 R)
• M11: 7,843,267 km (0.096 R)
• M12: 8,246,283 km (0.062 R)
• M13: 10,329,284 km (0.111 R)
• M14: 11,415,814 km (0.071 R)
• M15: 12,039,786 km (0.094 R)
• M16: 13,526,789 km (0.039 R)
• M17: 16,401,611 km (0.106 R)
• M18: 17,808,879 km (0.03 R)
• M19: 18,577,512 km (0.085 R)
• M20: 19,513,995 km (0.119 R)
• M21: 21,015,958 km (0.092 R)
• M22: 21,481,207 km (0.081 R)
• M23: 22,032,625 km (0.116 R)
• M24: 24,589,103 km (0.065 R)
• M25: 25,367,012 km (0.101 R)
• M26: 28,171,972 km (0.056 R)
• M27: 29,119,226 km (0.09 R)
• M28: 30,382,131 km (0.086 R)
• M29: 30,877,599 km (0.117 R)
• M30: 34,390,307 km (0.1 R)
• M31: 37,931,737 km (0.048 R)
• M32: 38,737,621 km (0.036 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 233 - 11,500 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit