🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.02

Radius: 1.01

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.55 AU - 0.69 AU

Year: 310 Days

Day: 27.5 Hours

Environment

Temp: -120 °C

Axial Tilt: 21.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 884.9

Radius: 11.3

Gravity: 6.93 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.61 AU - 0.89 AU

Year: 413 Days

Day: 14.6 Hours

Environment

Temp: -139 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,470,678 km

• M1: 140,472 km (0.116 R)
• M2: 533,616 km (0.079 R)
• M3: 902,674 km (0.114 R)
• M4: 1,257,669 km (0.059 R)
• M5: 1,917,246 km (0.07 R)
• M6: 2,512,197 km (0.045 R)
• M7: 3,551,453 km (0.052 R)
• M8: 3,911,087 km (0.06 R)
• M9: 4,281,042 km (0.107 R)
• M10: 4,780,400 km (0.049 R)
• M11: 5,826,089 km (0.066 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 231

Radius: 9.3

Gravity: 2.67 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.79 AU - 0.93 AU

Year: 507 Days

Day: 12.9 Hours

Environment

Temp: -158 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,470,678 km

• M1: 115,789 km (0.099 R)
• M2: 535,261 km (0.092 R)
• M3: 940,671 km (0.111 R)
• M4: 1,272,629 km (0.098 R)
• M5: 1,579,155 km (0.08 R)
• M6: 2,388,180 km (0.112 R)
• M7: 2,765,765 km (0.077 R)
• M8: 3,385,101 km (0.092 R)
• M9: 3,827,910 km (0.031 R)
• M10: 4,181,709 km (0.118 R)
• M11: 4,491,078 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 624

Radius: 14.1

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.03 AU - 1.49 AU

Year: 899 Days

Day: 8.3 Hours

Environment

Temp: -167 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 40,470,678 km

• M1: 175,329 km (0.084 R)
• M2: 783,294 km (0.106 R)
• M3: 1,238,820 km (0.072 R)
• M4: 1,808,489 km (0.118 R)
• M5: 2,356,316 km (0.112 R)
• M6: 2,989,863 km (0.08 R)
• M7: 3,520,337 km (0.063 R)
• M8: 4,192,480 km (0.093 R)
• M9: 4,670,146 km (0.108 R)
• M10: 5,332,566 km (0.077 R)
• M11: 6,118,703 km (0.026 R)
• M12: 6,670,270 km (0.085 R)
• M13: 7,752,012 km (0.086 R)
• M14: 9,217,174 km (0.061 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808

Radius: 10

Gravity: 8.08 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.55 AU - 1.71 AU

Year: 1323 Days

Day: 14.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,470,678 km

• M1: 124,465 km (0.117 R)
• M2: 438,771 km (0.043 R)
• M3: 1,022,202 km (0.078 R)
• M4: 1,425,668 km (0.092 R)
• M5: 1,762,413 km (0.107 R)
• M6: 2,461,334 km (0.088 R)
• M7: 3,110,289 km (0.11 R)
• M8: 3,989,775 km (0.105 R)
• M9: 5,619,794 km (0.08 R)
• M10: 6,620,304 km (0.075 R)
• M11: 7,708,030 km (0.051 R)
• M12: 8,266,180 km (0.118 R)
• M13: 8,791,268 km (0.116 R)
• M14: 9,525,944 km (0.108 R)
• M15: 11,187,378 km (0.114 R)
• M16: 11,757,645 km (0.111 R)
• M17: 12,197,911 km (0.113 R)
• M18: 12,956,372 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.9

Radius: 14.3

Gravity: 2.67 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 2.03 AU - 2.27 AU

Year: 2004 Days

Day: 6.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 40,470,678 km

• M1: 177,872 km (0.058 R)
• M2: 801,396 km (0.101 R)
• M3: 1,366,277 km (0.117 R)
• M4: 2,025,705 km (0.064 R)
• M5: 2,547,951 km (0.079 R)
• M6: 3,024,420 km (0.033 R)
• M7: 4,031,962 km (0.086 R)
• M8: 4,848,317 km (0.08 R)
• M9: 5,340,794 km (0.062 R)
• M10: 6,890,328 km (0.096 R)
• M11: 7,431,274 km (0.075 R)
• M12: 8,147,549 km (0.113 R)
• M13: 8,846,769 km (0.105 R)
• M14: 9,685,265 km (0.093 R)
• M15: 11,408,932 km (0.08 R)
• M16: 13,958,080 km (0.086 R)
• M17: 14,916,104 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 672.5

Radius: 14

Gravity: 3.43 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 2.65 AU - 2.95 AU

Year: 2979 Days

Day: 5.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 40,470,678 km

• M1: 174,132 km (0.08 R)
• M2: 709,692 km (0.108 R)
• M3: 1,395,599 km (0.093 R)
• M4: 2,159,296 km (0.114 R)
• M5: 2,638,458 km (0.072 R)
• M6: 3,293,996 km (0.11 R)
• M7: 3,975,264 km (0.067 R)
• M8: 4,502,597 km (0.073 R)
• M9: 5,004,946 km (0.081 R)
• M10: 6,069,485 km (0.079 R)
• M11: 6,888,982 km (0.106 R)
• M12: 8,238,804 km (0.07 R)
• M13: 8,888,657 km (0.095 R)
• M14: 9,720,870 km (0.106 R)
• M15: 10,644,188 km (0.076 R)
• M16: 13,393,049 km (0.112 R)
• M17: 14,438,588 km (0.068 R)
• M18: 15,847,351 km (0.062 R)
• M19: 17,071,511 km (0.109 R)
• M20: 18,357,903 km (0.077 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 924.2

Radius: 9.1

Gravity: 11.16 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 2.96 AU - 3.64 AU

Year: 3812 Days

Day: 8.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 40,470,678 km

• M1: 114,293 km (0.095 R)
• M2: 491,728 km (0.093 R)
• M3: 854,503 km (0.082 R)
• M4: 1,302,100 km (0.075 R)
• M5: 1,928,167 km (0.114 R)
• M6: 2,272,092 km (0.088 R)
• M7: 2,794,787 km (0.119 R)
• M8: 3,103,857 km (0.059 R)
• M9: 4,265,035 km (0.039 R)
• M10: 4,879,434 km (0.106 R)
• M11: 5,412,601 km (0.106 R)
• M12: 6,223,571 km (0.113 R)
• M13: 6,626,737 km (0.068 R)
• M14: 7,870,194 km (0.094 R)
• M15: 8,565,974 km (0.057 R)
• M16: 9,026,287 km (0.098 R)
• M17: 9,462,664 km (0.114 R)
• M18: 9,996,429 km (0.105 R)
• M19: 11,579,623 km (0.064 R)
• M20: 12,971,482 km (0.063 R)
• M21: 13,630,311 km (0.084 R)
• M22: 14,417,944 km (0.05 R)
• M23: 14,795,828 km (0.115 R)
• M24: 15,124,943 km (0.111 R)
• M25: 15,740,987 km (0.078 R)
• M26: 16,257,399 km (0.102 R)
• M27: 20,804,127 km (0.075 R)
• M28: 22,999,027 km (0.099 R)
• M29: 27,347,538 km (0.081 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 129.7

Radius: 6.6

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 8.45 AU - 10.01 AU

Year: 17829 Days

Day: 19.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,470,678 km

• M1: 82,129 km (0.06 R)
• M2: 743,950 km (0.039 R)
• M3: 1,262,157 km (0.113 R)
• M4: 4,437,970 km (0.086 R)
• M5: 15,157,107 km (0.075 R)
• M6: 16,250,218 km (0.044 R)
• M7: 28,267,864 km (0.108 R)
• M8: 33,414,480 km (0.078 R)
• M9: 40,228,812 km (0.119 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: 428 - 12,179 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit