🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.22

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.48 AU - 0.66 AU

Year: 278 Days

Day: 20.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 7.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.39

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.5 AU - 0.82 AU

Year: 346 Days

Day: 36.9 Hours

Environment

Temp: -138 °C

Axial Tilt: 20.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.3

Radius: 13.3

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.93 AU - 0.99 AU

Year: 607 Days

Day: 14.6 Hours

Environment

Temp: -153 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 60,816,927 km

• M1: 188,194 km (0.109 R)
• M2: 743,501 km (0.079 R)
• M3: 1,157,289 km (0.054 R)
• M4: 1,575,415 km (0.055 R)
• M5: 4,279,696 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 228.4

Radius: 9.8

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.91 AU - 1.43 AU

Year: 817 Days

Day: 8.7 Hours

Environment

Temp: -162 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 60,816,927 km

• M1: 121,922 km (0.054 R)
• M2: 427,700 km (0.105 R)
• M3: 775,515 km (0.098 R)
• M4: 1,082,939 km (0.116 R)
• M5: 1,460,823 km (0.092 R)
• M6: 2,337,018 km (0.079 R)
• M7: 2,752,601 km (0.113 R)
• M8: 3,542,926 km (0.097 R)
• M9: 4,566,026 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 331.9

Radius: 12.9

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.89 AU - 2.67 AU

Year: 2223 Days

Day: 9.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 60,816,927 km

• M1: 160,519 km (0.114 R)
• M2: 633,547 km (0.078 R)
• M3: 1,122,283 km (0.095 R)
• M4: 1,633,010 km (0.065 R)
• M5: 2,469,562 km (0.078 R)
• M6: 2,993,453 km (0.092 R)
• M7: 3,414,721 km (0.113 R)
• M8: 4,904,417 km (0.107 R)
• M9: 6,083,697 km (0.045 R)
• M10: 7,336,728 km (0.097 R)
• M11: 7,772,058 km (0.099 R)
• M12: 8,195,869 km (0.119 R)
• M13: 9,307,980 km (0.053 R)
• M14: 10,897,457 km (0.112 R)
• M15: 11,867,449 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 780

Radius: 10.2

Gravity: 7.5 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 4.33 AU - 5.57 AU

Year: 7111 Days

Day: 10.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 60,816,927 km

• M1: 126,859 km (0.098 R)
• M2: 636,090 km (0.089 R)
• M3: 1,008,888 km (0.079 R)
• M4: 1,802,056 km (0.11 R)
• M5: 2,239,779 km (0.104 R)
• M6: 3,353,835 km (0.102 R)
• M7: 3,724,987 km (0.057 R)
• M8: 4,175,277 km (0.103 R)
• M9: 5,651,658 km (0.103 R)
• M10: 6,247,955 km (0.026 R)
• M11: 8,003,486 km (0.066 R)
• M12: 9,831,422 km (0.086 R)
• M13: 10,401,091 km (0.069 R)
• M14: 12,903,116 km (0.085 R)
• M15: 16,629,299 km (0.083 R)
• M16: 17,370,108 km (0.103 R)
• M17: 19,576,527 km (0.081 R)
• M18: 20,326,461 km (0.034 R)
• M19: 24,797,493 km (0.116 R)
• M20: 25,498,209 km (0.04 R)
• M21: 26,211,941 km (0.075 R)
• M22: 27,030,839 km (0.069 R)
• M23: 28,338,474 km (0.089 R)
• M24: 29,883,970 km (0.069 R)
• M25: 30,278,908 km (0.08 R)
• M26: 32,410,229 km (0.106 R)
• M27: 33,778,451 km (0.034 R)
• M28: 38,930,153 km (0.06 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 165.2

Radius: 7.6

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 6 AU - 8.24 AU

Year: 12267 Days

Day: 22 Hours

Environment

Temp: -214 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 60,816,927 km

• M1: 94,546 km (0.079 R)
• M2: 410,197 km (0.114 R)
• M3: 693,835 km (0.114 R)
• M4: 1,042,996 km (0.117 R)
• M5: 1,835,566 km (0.056 R)
• M6: 2,444,429 km (0.092 R)
• M7: 2,730,311 km (0.119 R)
• M8: 3,038,632 km (0.092 R)
• M9: 3,370,141 km (0.117 R)
• M10: 4,305,427 km (0.078 R)
• M11: 6,018,322 km (0.084 R)
• M12: 7,909,838 km (0.095 R)
• M13: 8,539,046 km (0.117 R)
• M14: 9,807,936 km (0.1 R)
• M15: 11,101,508 km (0.079 R)
• M16: 14,306,493 km (0.069 R)
• M17: 16,150,437 km (0.05 R)
• M18: 18,348,777 km (0.102 R)
• M19: 20,885,808 km (0.113 R)
• M20: 21,255,763 km (0.041 R)
• M21: 22,008,839 km (0.108 R)
• M22: 23,171,513 km (0.043 R)
• M23: 25,199,313 km (0.096 R)
• M24: 26,042,745 km (0.112 R)
• M25: 29,327,017 km (0.076 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 469.7

Radius: 4.8

Gravity: 20.39 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 7.76 AU - 10.12 AU

Year: 17259 Days

Day: 21.2 Hours

Environment

Temp: -223 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 60,816,927 km

• M1: 59,690 km (0.104 R)
• M2: 352,901 km (0.079 R)
• M3: 503,247 km (0.047 R)
• M4: 808,576 km (0.082 R)
• M5: 975,229 km (0.053 R)
• M6: 1,177,634 km (0.12 R)
• M7: 1,619,547 km (0.063 R)
• M8: 2,283,013 km (0.058 R)
• M9: 3,063,016 km (0.113 R)
• M10: 3,238,196 km (0.101 R)
• M11: 3,804,124 km (0.112 R)
• M12: 7,563,519 km (0.112 R)
• M13: 7,791,805 km (0.08 R)
• M14: 8,701,659 km (0.04 R)
• M15: 8,851,407 km (0.084 R)
• M16: 9,003,099 km (0.049 R)
• M17: 10,959,989 km (0.081 R)
• M18: 11,852,938 km (0.091 R)
• M19: 12,793,460 km (0.09 R)
• M20: 12,987,339 km (0.119 R)
• M21: 14,893,066 km (0.096 R)
• M22: 15,912,277 km (0.106 R)
• M23: 17,846,727 km (0.087 R)
• M24: 18,415,199 km (0.095 R)
• M25: 20,988,880 km (0.097 R)
• M26: 21,805,386 km (0.096 R)
• M27: 23,212,952 km (0.095 R)
• M28: 23,695,256 km (0.035 R)
• M29: 30,472,637 km (0.08 R)
• M30: 35,942,235 km (0.114 R)
• M31: 38,034,511 km (0.103 R)
• M32: 38,704,709 km (0.091 R)
• M33: 39,930,664 km (0.11 R)
• M34: 47,525,000 km (0.092 R)
• M35: 48,458,789 km (0.094 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 433 - 13,985 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit