🌌 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: 0.48

Radius: 0.75

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.48 AU - 0.66 AU

Year: 282 Days

Day: 23.2 Hours

Environment

Temp: -120 °C

Axial Tilt: 49.3 °

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: 3.13

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.58 AU - 0.74 AU

Year: 352 Days

Day: 13.1 Hours

Environment

Temp: -127 °C

Axial Tilt: 24.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 730.8

Radius: 13.8

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.68 AU - 1.04 AU

Year: 523 Days

Day: 11.5 Hours

Environment

Temp: -159 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 34,239,201 km

• M1: 171,738 km (0.101 R)
• M2: 760,256 km (0.088 R)
• M3: 2,225,867 km (0.027 R)
• M4: 2,834,730 km (0.085 R)
• M5: 3,656,172 km (0.036 R)
• M6: 4,288,223 km (0.068 R)
• M7: 5,305,488 km (0.061 R)
• M8: 6,026,101 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 709.2

Radius: 10

Gravity: 7.09 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.87 AU - 0.89 AU

Year: 542 Days

Day: 11.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 34,239,201 km

• M1: 124,316 km (0.102 R)
• M2: 550,819 km (0.116 R)
• M3: 1,028,635 km (0.108 R)
• M4: 1,748,949 km (0.079 R)
• M5: 2,128,927 km (0.032 R)
• M6: 2,700,541 km (0.107 R)
• M7: 3,346,804 km (0.115 R)
• M8: 4,310,513 km (0.099 R)
• M9: 4,929,848 km (0.066 R)
• M10: 5,913,454 km (0.106 R)
• M11: 6,422,835 km (0.081 R)
• M12: 6,920,397 km (0.03 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 824.5

Radius: 9.3

Gravity: 9.53 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 1.22 AU - 1.52 AU

Year: 1052 Days

Day: 6.4 Hours

Environment

Temp: -168 °C

Axial Tilt: 162 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,239,201 km

• M1: 115,789 km (0.033 R)
• M2: 467,194 km (0.11 R)
• M3: 793,168 km (0.106 R)
• M4: 1,217,427 km (0.105 R)
• M5: 1,876,705 km (0.082 R)
• M6: 2,402,093 km (0.114 R)
• M7: 3,826,265 km (0.091 R)
• M8: 4,192,181 km (0.046 R)
• M9: 5,150,655 km (0.099 R)
• M10: 5,895,502 km (0.071 R)
• M11: 6,226,263 km (0.086 R)
• M12: 7,169,628 km (0.03 R)
• M13: 7,624,106 km (0.113 R)
• M14: 8,590,658 km (0.11 R)
• M15: 9,941,975 km (0.089 R)
• M16: 10,668,423 km (0.06 R)
• M17: 11,328,448 km (0.066 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 331.8

Radius: 9.6

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 1.41 AU - 1.77 AU

Year: 1315 Days

Day: 14.9 Hours

Environment

Temp: -178 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 34,239,201 km

• M1: 119,678 km (0.099 R)
• M2: 531,671 km (0.11 R)
• M3: 831,764 km (0.117 R)
• M4: 1,136,944 km (0.116 R)
• M5: 1,826,291 km (0.111 R)
• M6: 2,400,148 km (0.088 R)
• M7: 4,063,677 km (0.066 R)
• M8: 4,630,353 km (0.053 R)
• M9: 7,013,447 km (0.118 R)
• M10: 7,534,497 km (0.098 R)
• M11: 8,653,938 km (0.091 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.3

Radius: 13.8

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 3.96 AU - 6.14 AU

Year: 7445 Days

Day: 8.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 34,239,201 km

• M1: 171,589 km (0.103 R)
• M2: 783,444 km (0.061 R)
• M3: 1,842,148 km (0.096 R)
• M4: 2,879,161 km (0.096 R)
• M5: 3,619,670 km (0.087 R)
• M6: 4,072,952 km (0.083 R)
• M7: 5,361,288 km (0.079 R)
• M8: 6,018,472 km (0.07 R)
• M9: 8,856,792 km (0.095 R)
• M10: 10,857,514 km (0.098 R)
• M11: 12,225,587 km (0.064 R)
• M12: 12,706,245 km (0.084 R)
• M13: 13,934,593 km (0.059 R)
• M14: 14,518,623 km (0.101 R)
• M15: 15,610,837 km (0.086 R)
• M16: 16,050,206 km (0.102 R)
• M17: 18,932,658 km (0.059 R)
• M18: 19,941,396 km (0.047 R)
• M19: 22,065,985 km (0.112 R)
• M20: 22,779,866 km (0.115 R)
• M21: 24,929,139 km (0.115 R)
• M22: 25,443,606 km (0.105 R)
• M23: 29,819,194 km (0.081 R)
• M24: 31,982,978 km (0.108 R)
• M25: 34,779,111 km (0.026 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 391.9

Radius: 9.4

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 5.14 AU - 5.44 AU

Year: 7982 Days

Day: 12.3 Hours

Environment

Temp: -227 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 34,239,201 km

• M1: 116,836 km (0.112 R)
• M2: 460,761 km (0.11 R)
• M3: 788,530 km (0.094 R)
• M4: 1,376,899 km (0.11 R)
• M5: 1,789,789 km (0.104 R)
• M6: 2,451,460 km (0.082 R)
• M7: 2,887,089 km (0.119 R)
• M8: 3,352,339 km (0.072 R)
• M9: 4,511,423 km (0.05 R)
• M10: 4,887,213 km (0.115 R)
• M11: 6,469,360 km (0.116 R)
• M12: 6,913,217 km (0.092 R)
• M13: 8,812,661 km (0.079 R)
• M14: 14,283,156 km (0.116 R)
• M15: 14,977,888 km (0.067 R)
• M16: 17,983,609 km (0.06 R)
• M17: 21,444,256 km (0.099 R)
• M18: 22,509,094 km (0.094 R)
• M19: 24,579,828 km (0.107 R)
• M20: 27,740,831 km (0.108 R)
• M21: 28,821,675 km (0.099 R)
• M22: 31,549,293 km (0.114 R)
• M23: 33,225,687 km (0.091 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 300 - 18,591 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit