🌌 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: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.48 AU - 0.66 AU

Year: 282 Days

Day: 44.7 Hours

Environment

Temp: -122 °C

Axial Tilt: 11.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 547.5

Radius: 12.5

Gravity: 3.5 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.7 AU - 0.78 AU

Year: 418 Days

Day: 8.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 84,015,796 km

• M1: 155,432 km (0.113 R)
• M2: 565,929 km (0.094 R)
• M3: 1,180,327 km (0.05 R)
• M4: 1,570,030 km (0.083 R)
• M5: 2,079,859 km (0.102 R)
• M6: 2,728,366 km (0.08 R)
• M7: 3,722,593 km (0.096 R)
• M8: 4,230,179 km (0.098 R)
• M9: 5,245,949 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 970.4

Radius: 12.5

Gravity: 6.21 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.85 AU - 1.13 AU

Year: 646 Days

Day: 5.6 Hours

Environment

Temp: -151 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 84,015,796 km

• M1: 155,582 km (0.1 R)
• M2: 618,886 km (0.11 R)
• M3: 1,044,941 km (0.089 R)
• M4: 1,650,513 km (0.116 R)
• M5: 2,106,936 km (0.059 R)
• M6: 2,693,061 km (0.093 R)
• M7: 3,189,576 km (0.111 R)
• M8: 3,790,361 km (0.106 R)
• M9: 4,289,420 km (0.045 R)
• M10: 4,901,125 km (0.053 R)
• M11: 5,897,896 km (0.082 R)
• M12: 6,361,649 km (0.088 R)
• M13: 7,226,475 km (0.056 R)
• M14: 7,711,172 km (0.054 R)
• M15: 8,168,193 km (0.118 R)
• M16: 8,567,171 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 204.2

Radius: 14.1

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 1 AU - 1.5 AU

Year: 917 Days

Day: 10.7 Hours

Environment

Temp: -166 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 84,015,796 km

• M1: 175,927 km (0.042 R)
• M2: 651,499 km (0.089 R)
• M3: 1,270,086 km (0.115 R)
• M4: 1,891,067 km (0.043 R)
• M5: 2,348,238 km (0.119 R)
• M6: 2,967,274 km (0.118 R)
• M7: 3,916,771 km (0.108 R)
• M8: 4,656,383 km (0.061 R)
• M9: 5,124,475 km (0.115 R)
• M10: 6,247,955 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 217.1

Radius: 13.5

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 2.38 AU - 3.34 AU

Year: 3173 Days

Day: 13.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 88.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 84,015,796 km

• M1: 168,148 km (0.09 R)
• M2: 703,260 km (0.03 R)
• M3: 1,851,573 km (0.049 R)
• M4: 2,368,433 km (0.067 R)
• M5: 3,530,510 km (0.111 R)
• M6: 4,183,654 km (0.102 R)
• M7: 5,968,805 km (0.065 R)
• M8: 9,433,941 km (0.095 R)
• M9: 11,497,943 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 427.4

Radius: 10.2

Gravity: 4.11 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 3.13 AU - 3.33 AU

Year: 3808 Days

Day: 5.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 84,015,796 km

• M1: 130,449 km (0.039 R)
• M2: 581,487 km (0.036 R)
• M3: 1,051,972 km (0.085 R)
• M4: 3,366,102 km (0.085 R)
• M5: 4,279,247 km (0.099 R)
• M6: 6,276,977 km (0.116 R)
• M7: 7,063,114 km (0.057 R)
• M8: 7,751,114 km (0.078 R)
• M9: 9,115,597 km (0.073 R)
• M10: 10,754,292 km (0.037 R)
• M11: 11,079,667 km (0.052 R)
• M12: 19,290,945 km (0.072 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 311.7

Radius: 14.2

Gravity: 1.55 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 4.49 AU - 6.33 AU

Year: 8255 Days

Day: 7.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 84,015,796 km

• M1: 176,525 km (0.073 R)
• M2: 2,320,113 km (0.081 R)
• M3: 3,441,798 km (0.068 R)
• M4: 4,739,709 km (0.075 R)
• M5: 5,399,885 km (0.103 R)
• M6: 5,842,994 km (0.078 R)
• M7: 8,754,467 km (0.056 R)
• M8: 10,547,547 km (0.063 R)
• M9: 15,904,498 km (0.07 R)
• M10: 16,634,984 km (0.088 R)
• M11: 17,260,752 km (0.076 R)
• M12: 19,782,972 km (0.059 R)
• M13: 21,644,568 km (0.067 R)
• M14: 22,466,309 km (0.074 R)
• M15: 27,666,481 km (0.066 R)
• M16: 31,674,656 km (0.113 R)
• M17: 32,153,370 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 409.9

Radius: 6.6

Gravity: 9.41 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 8.39 AU - 8.93 AU

Year: 16718 Days

Day: 18.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 46.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 84,015,796 km

• M1: 82,129 km (0.104 R)
• M2: 319,242 km (0.066 R)
• M3: 571,613 km (0.067 R)
• M4: 800,797 km (0.112 R)
• M5: 1,024,147 km (0.114 R)
• M6: 2,476,443 km (0.084 R)
• M7: 2,959,943 km (0.115 R)
• M8: 3,610,245 km (0.101 R)
• M9: 4,412,838 km (0.111 R)
• M10: 5,684,569 km (0.098 R)
• M11: 6,603,848 km (0.11 R)
• M12: 8,209,782 km (0.085 R)
• M13: 9,028,381 km (0.112 R)
• M14: 9,279,107 km (0.114 R)
• M15: 12,170,834 km (0.09 R)
• M16: 16,865,514 km (0.069 R)
• M17: 20,245,229 km (0.039 R)
• M18: 22,366,078 km (0.106 R)
• M19: 22,733,341 km (0.11 R)
• M20: 24,436,214 km (0.072 R)
• M21: 24,825,916 km (0.085 R)
• M22: 26,324,139 km (0.028 R)
• M23: 27,460,484 km (0.113 R)
• M24: 28,737,003 km (0.096 R)
• M25: 33,039,887 km (0.068 R)
• M26: 36,472,110 km (0.101 R)
• M27: 36,981,042 km (0.108 R)
• M28: 43,178,733 km (0.112 R)
• M29: 43,891,566 km (0.089 R)
• M30: 48,793,440 km (0.081 R)
• M31: 49,101,761 km (0.051 R)
• M32: 54,543,683 km (0.105 R)
• M33: 56,386,878 km (0.078 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 916.3

Radius: 5.8

Gravity: 27.24 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 9.52 AU - 10.04 AU

Year: 20064 Days

Day: 23.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 84,015,796 km

• M1: 73,453 km (0.111 R)
• M2: 384,766 km (0.101 R)
• M3: 816,655 km (0.094 R)
• M4: 1,028,336 km (0.119 R)
• M5: 1,463,965 km (0.07 R)
• M6: 2,477,341 km (0.079 R)
• M7: 3,116,273 km (0.045 R)
• M8: 3,859,475 km (0.081 R)
• M9: 4,358,684 km (0.09 R)
• M10: 4,570,065 km (0.092 R)
• M11: 5,899,990 km (0.102 R)
• M12: 6,561,662 km (0.085 R)
• M13: 7,469,272 km (0.1 R)
• M14: 8,136,778 km (0.061 R)
• M15: 8,457,815 km (0.095 R)
• M16: 9,125,470 km (0.038 R)
• M17: 13,735,777 km (0.089 R)
• M18: 16,535,352 km (0.117 R)
• M19: 27,888,933 km (0.096 R)
• M20: 35,344,442 km (0.119 R)
• M21: 36,486,771 km (0.045 R)
• M22: 48,069,985 km (0.073 R)
• M23: 54,025,775 km (0.113 R)
• M24: 56,694,302 km (0.109 R)
• M25: 64,167,463 km (0.097 R)
• M26: 67,375,291 km (0.088 R)
• M27: 77,876,164 km (0.116 R)
• M28: 81,029,986 km (0.103 R)
• M29: 83,513,161 km (0.088 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 399 - 13,893 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit