🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.5 AU - 0.82 AU

Year: 346 Days

Day: 22.4 Hours

Environment

Temp: -131 °C

Axial Tilt: 15.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.7

Radius: 12.4

Gravity: 5.7 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 1.06 AU - 1.1 AU

Year: 725 Days

Day: 12.7 Hours

Environment

Temp: -162 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 33,281,606 km

• M1: 158,125 km (0.099 R)
• M2: 706,102 km (0.086 R)
• M3: 1,100,741 km (0.058 R)
• M4: 1,500,018 km (0.06 R)
• M5: 2,045,452 km (0.066 R)
• M6: 2,440,839 km (0.091 R)
• M7: 3,112,384 km (0.102 R)
• M8: 3,555,343 km (0.109 R)
• M9: 4,149,097 km (0.104 R)
• M10: 4,756,464 km (0.085 R)
• M11: 6,007,252 km (0.071 R)
• M12: 7,583,864 km (0.058 R)
• M13: 8,166,398 km (0.103 R)
• M14: 8,726,343 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328.2

Radius: 8.9

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 1.03 AU - 1.17 AU

Year: 745 Days

Day: 14.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,281,606 km

• M1: 111,750 km (0.113 R)
• M2: 436,078 km (0.06 R)
• M3: 729,738 km (0.099 R)
• M4: 1,012,927 km (0.115 R)
• M5: 1,358,498 km (0.029 R)
• M6: 1,743,414 km (0.06 R)
• M7: 2,283,761 km (0.071 R)
• M8: 2,619,608 km (0.062 R)
• M9: 3,033,994 km (0.104 R)
• M10: 3,317,782 km (0.06 R)
• M11: 4,022,388 km (0.049 R)
• M12: 4,744,945 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 817.1

Radius: 10.5

Gravity: 7.41 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 1.61 AU - 1.87 AU

Year: 1482 Days

Day: 12.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 33,281,606 km

• M1: 130,749 km (0.115 R)
• M2: 496,366 km (0.113 R)
• M3: 874,400 km (0.092 R)
• M4: 1,283,699 km (0.114 R)
• M5: 1,957,937 km (0.027 R)
• M6: 2,290,493 km (0.12 R)
• M7: 2,925,686 km (0.054 R)
• M8: 3,476,056 km (0.109 R)
• M9: 4,948,099 km (0.11 R)
• M10: 5,550,380 km (0.087 R)
• M11: 6,033,881 km (0.116 R)
• M12: 7,006,117 km (0.092 R)
• M13: 7,488,869 km (0.08 R)
• M14: 8,137,675 km (0.096 R)
• M15: 9,355,103 km (0.107 R)
• M16: 10,209,157 km (0.105 R)
• M17: 13,900,185 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 327.1

Radius: 10.7

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 1.72 AU - 2.08 AU

Year: 1691 Days

Day: 14.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 33,281,606 km

• M1: 133,142 km (0.058 R)
• M2: 536,308 km (0.046 R)
• M3: 890,855 km (0.112 R)
• M4: 1,278,912 km (0.041 R)
• M5: 1,762,263 km (0.111 R)
• M6: 2,376,961 km (0.096 R)
• M7: 3,087,550 km (0.103 R)
• M8: 3,631,189 km (0.079 R)
• M9: 4,430,491 km (0.085 R)
• M10: 5,084,233 km (0.028 R)
• M11: 5,974,341 km (0.101 R)
• M12: 6,445,275 km (0.102 R)
• M13: 7,693,071 km (0.119 R)
• M14: 8,251,220 km (0.088 R)
• M15: 9,658,936 km (0.079 R)
• M16: 10,340,504 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 232.5

Radius: 10.7

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 2 AU - 2.14 AU

Year: 1923 Days

Day: 12.9 Hours

Environment

Temp: -183 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 33,281,606 km

• M1: 137,929 km (0.111 R)
• M2: 497,114 km (0.067 R)
• M3: 1,435,840 km (0.1 R)
• M4: 2,014,635 km (0.117 R)
• M5: 2,794,488 km (0.076 R)
• M6: 3,211,866 km (0.026 R)
• M7: 5,296,064 km (0.047 R)
• M8: 5,663,327 km (0.091 R)
• M9: 7,355,727 km (0.064 R)
• M10: 8,619,979 km (0.066 R)
• M11: 10,054,473 km (0.06 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 834.9

Radius: 13.4

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 2.25 AU - 3.09 AU

Year: 2817 Days

Day: 13.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 33,281,606 km

• M1: 179,517 km (0.097 R)
• M2: 625,768 km (0.068 R)
• M3: 1,211,144 km (0.057 R)
• M4: 1,738,626 km (0.107 R)
• M5: 2,362,150 km (0.092 R)
• M6: 3,605,009 km (0.115 R)
• M7: 4,274,610 km (0.06 R)
• M8: 4,697,074 km (0.044 R)
• M9: 7,123,701 km (0.051 R)
• M10: 8,215,317 km (0.067 R)
• M11: 9,489,591 km (0.087 R)
• M12: 10,769,850 km (0.027 R)
• M13: 11,388,587 km (0.088 R)
• M14: 12,074,493 km (0.085 R)
• M15: 14,348,081 km (0.085 R)
• M16: 15,250,905 km (0.072 R)
• M17: 16,084,913 km (0.1 R)
• M18: 17,004,042 km (0.102 R)
• M19: 18,947,169 km (0.1 R)
• M20: 20,095,482 km (0.099 R)

Asteroid Belt

Center: 3.25 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 3.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 260.4

Radius: 14.6

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 3.07 AU - 4.59 AU

Year: 4840 Days

Day: 5.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 33,281,606 km

• M1: 181,761 km (0.057 R)
• M2: 937,380 km (0.058 R)
• M3: 1,489,546 km (0.1 R)
• M4: 1,964,818 km (0.12 R)
• M5: 2,771,151 km (0.115 R)
• M6: 3,341,119 km (0.099 R)
• M7: 3,908,544 km (0.095 R)
• M8: 5,337,951 km (0.092 R)
• M9: 6,009,795 km (0.077 R)
• M10: 6,854,574 km (0.079 R)
• M11: 7,367,695 km (0.039 R)
• M12: 7,971,472 km (0.104 R)
• M13: 8,437,470 km (0.051 R)
• M14: 9,170,649 km (0.095 R)
• M15: 10,252,690 km (0.119 R)
• M16: 10,724,671 km (0.073 R)
• M17: 11,335,180 km (0.103 R)
• M18: 13,031,620 km (0.074 R)
• M19: 14,792,387 km (0.106 R)
• M20: 16,761,095 km (0.061 R)
• M21: 17,640,282 km (0.026 R)
• M22: 19,490,807 km (0.085 R)
• M23: 20,586,911 km (0.053 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 611.7

Radius: 14.4

Gravity: 2.95 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 4.11 AU - 4.85 AU

Year: 6123 Days

Day: 14.4 Hours

Environment

Temp: -204 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 33,281,606 km

• M1: 179,069 km (0.081 R)
• M2: 677,978 km (0.101 R)
• M3: 1,357,900 km (0.104 R)
• M4: 1,952,851 km (0.118 R)
• M5: 3,155,468 km (0.092 R)
• M6: 4,674,335 km (0.058 R)
• M7: 6,181,234 km (0.06 R)
• M8: 6,908,729 km (0.118 R)
• M9: 8,614,893 km (0.097 R)
• M10: 9,609,718 km (0.061 R)
• M11: 10,495,936 km (0.073 R)
• M12: 11,053,487 km (0.049 R)
• M13: 14,652,962 km (0.102 R)
• M14: 15,174,011 km (0.082 R)
• M15: 19,038,274 km (0.03 R)
• M16: 20,080,672 km (0.108 R)
• M17: 21,977,124 km (0.073 R)
• M18: 26,719,526 km (0.091 R)
• M19: 28,203,387 km (0.113 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 427 - 20,204 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit