🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.1

Radius: 8.2

Gravity: 6.75 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.72 AU - 0.88 AU

Year: 477 Days

Day: 14.5 Hours

Environment

Temp: -170 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 77,505,692 km

• M1: 102,624 km (0.084 R)
• M2: 357,988 km (0.043 R)
• M3: 970,741 km (0.091 R)
• M4: 1,273,377 km (0.043 R)
• M5: 1,556,715 km (0.065 R)
• M6: 1,859,352 km (0.046 R)
• M7: 2,218,536 km (0.072 R)
• M8: 3,143,201 km (0.107 R)
• M9: 3,582,420 km (0.025 R)
• M10: 4,062,181 km (0.077 R)
• M11: 4,400,721 km (0.108 R)
• M12: 4,699,468 km (0.117 R)
• M13: 4,966,350 km (0.109 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 342.4

Radius: 12.2

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.8 AU - 0.84 AU

Year: 495 Days

Day: 5.5 Hours

Environment

Temp: -169 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 77,505,692 km

• M1: 151,692 km (0.091 R)
• M2: 723,156 km (0.089 R)
• M3: 1,372,860 km (0.101 R)
• M4: 1,765,704 km (0.109 R)
• M5: 2,234,992 km (0.085 R)
• M6: 2,662,393 km (0.099 R)
• M7: 3,112,683 km (0.078 R)
• M8: 3,816,990 km (0.091 R)
• M9: 4,259,949 km (0.079 R)
• M10: 4,836,798 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.4

Radius: 14.4

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 2.24 AU - 2.44 AU

Year: 2387 Days

Day: 10.8 Hours

Environment

Temp: -208 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 77,505,692 km

• M1: 179,517 km (0.092 R)
• M2: 662,868 km (0.091 R)
• M3: 1,328,878 km (0.039 R)
• M4: 1,845,888 km (0.114 R)
• M5: 2,556,029 km (0.078 R)
• M6: 3,033,097 km (0.059 R)
• M7: 3,497,449 km (0.119 R)
• M8: 4,253,067 km (0.089 R)
• M9: 5,428,009 km (0.119 R)
• M10: 6,471,604 km (0.105 R)
• M11: 7,218,995 km (0.071 R)
• M12: 8,381,520 km (0.11 R)
• M13: 9,774,874 km (0.119 R)
• M14: 11,156,560 km (0.09 R)
• M15: 11,852,639 km (0.096 R)
• M16: 14,448,162 km (0.094 R)
• M17: 14,931,214 km (0.069 R)
• M18: 15,676,211 km (0.058 R)
• M19: 19,194,304 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 888

Radius: 11.4

Gravity: 6.83 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 2.82 AU - 3.6 AU

Year: 3835 Days

Day: 5.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 77,505,692 km

• M1: 141,819 km (0.106 R)
• M2: 731,534 km (0.059 R)
• M3: 1,401,134 km (0.094 R)
• M4: 1,795,025 km (0.116 R)
• M5: 2,795,984 km (0.12 R)
• M6: 3,761,339 km (0.097 R)
• M7: 5,693,246 km (0.117 R)
• M8: 6,842,756 km (0.091 R)
• M9: 7,303,218 km (0.076 R)
• M10: 8,213,372 km (0.111 R)
• M11: 8,810,118 km (0.103 R)
• M12: 9,800,306 km (0.092 R)
• M13: 14,037,067 km (0.081 R)
• M14: 14,728,210 km (0.066 R)
• M15: 19,819,025 km (0.038 R)
• M16: 20,553,551 km (0.119 R)
• M17: 23,084,597 km (0.038 R)
• M18: 24,425,144 km (0.096 R)
• M19: 27,424,431 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 879.6

Radius: 14.5

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 3.18 AU - 4.28 AU

Year: 4804 Days

Day: 13.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 77,505,692 km

• M1: 180,415 km (0.106 R)
• M2: 732,431 km (0.118 R)
• M3: 1,496,577 km (0.085 R)
• M4: 2,022,114 km (0.116 R)
• M5: 2,850,438 km (0.1 R)
• M6: 4,224,345 km (0.059 R)
• M7: 8,746,688 km (0.085 R)
• M8: 13,372,554 km (0.066 R)
• M9: 15,551,596 km (0.054 R)
• M10: 16,086,409 km (0.071 R)
• M11: 17,445,655 km (0.062 R)
• M12: 19,149,126 km (0.111 R)
• M13: 22,657,196 km (0.069 R)
• M14: 28,913,379 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 792

Radius: 11.7

Gravity: 5.79 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 2.92 AU - 4.68 AU

Year: 4940 Days

Day: 10.8 Hours

Environment

Temp: -222 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 77,505,692 km

• M1: 150,495 km (0.075 R)
• M2: 526,285 km (0.117 R)
• M3: 932,593 km (0.079 R)
• M4: 1,475,633 km (0.069 R)
• M5: 2,721,185 km (0.095 R)
• M6: 3,649,590 km (0.115 R)
• M7: 4,520,100 km (0.109 R)
• M8: 5,100,240 km (0.106 R)
• M9: 6,837,221 km (0.117 R)
• M10: 7,639,365 km (0.099 R)
• M11: 8,699,415 km (0.044 R)
• M12: 9,984,760 km (0.077 R)
• M13: 10,741,277 km (0.075 R)
• M14: 11,298,080 km (0.068 R)
• M15: 14,045,295 km (0.114 R)
• M16: 15,109,684 km (0.048 R)
• M17: 15,691,171 km (0.12 R)
• M18: 17,716,427 km (0.118 R)
• M19: 19,498,736 km (0.06 R)
• M20: 25,396,782 km (0.114 R)
• M21: 27,400,346 km (0.09 R)
• M22: 29,507,282 km (0.105 R)
• M23: 30,508,092 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.9

Radius: 8.8

Gravity: 10.67 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 4.2 AU - 4.5 AU

Year: 6050 Days

Day: 9.4 Hours

Environment

Temp: -219 °C

Axial Tilt: 64.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 77,505,692 km

• M1: 112,946 km (0.091 R)
• M2: 712,684 km (0.038 R)
• M3: 1,268,440 km (0.114 R)
• M4: 1,835,416 km (0.093 R)
• M5: 3,469,324 km (0.028 R)
• M6: 6,741,778 km (0.111 R)
• M7: 9,513,976 km (0.116 R)
• M8: 10,617,410 km (0.104 R)
• M9: 11,349,242 km (0.117 R)
• M10: 13,689,851 km (0.051 R)
• M11: 14,089,875 km (0.052 R)
• M12: 14,497,530 km (0.044 R)
• M13: 15,093,677 km (0.06 R)
• M14: 16,271,312 km (0.088 R)
• M15: 16,655,629 km (0.087 R)
• M16: 17,111,453 km (0.09 R)
• M17: 18,116,601 km (0.068 R)
• M18: 22,375,354 km (0.112 R)
• M19: 25,073,950 km (0.097 R)
• M20: 26,810,930 km (0.095 R)
• M21: 28,257,243 km (0.071 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 645.4

Radius: 6.6

Gravity: 14.82 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 8.62 AU - 11.44 AU

Year: 21183 Days

Day: 16.9 Hours

Environment

Temp: -244 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 77,505,692 km

• M1: 82,129 km (0.076 R)
• M2: 630,106 km (0.094 R)
• M3: 2,889,782 km (0.104 R)
• M4: 3,694,319 km (0.062 R)
• M5: 4,067,716 km (0.11 R)
• M6: 4,963,209 km (0.098 R)
• M7: 7,569,203 km (0.11 R)
• M8: 8,432,234 km (0.096 R)
• M9: 11,543,570 km (0.11 R)
• M10: 16,973,374 km (0.099 R)
• M11: 20,761,192 km (0.094 R)
• M12: 24,750,220 km (0.044 R)
• M13: 29,586,569 km (0.106 R)
• M14: 32,875,927 km (0.082 R)
• M15: 47,797,866 km (0.102 R)
• M16: 55,588,474 km (0.064 R)
• M17: 58,234,113 km (0.093 R)
• M18: 60,370,969 km (0.096 R)
• M19: 63,571,466 km (0.066 R)
• M20: 66,672,929 km (0.076 R)
• M21: 70,963,246 km (0.072 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: 240 - 17,434 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit