🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.47

Radius: 1.17

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.52 AU - 0.56 AU

Year: 256 Days

Day: 28.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 23.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.97

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.54 AU - 0.64 AU

Year: 293 Days

Day: 29.3 Hours

Environment

Temp: -137 °C

Axial Tilt: 31.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.5

Radius: 9.3

Gravity: 6.23 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.76 AU - 0.92 AU

Year: 497 Days

Day: 10.4 Hours

Environment

Temp: -144 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 25,408,868 km

• M1: 115,639 km (0.076 R)
• M2: 463,604 km (0.113 R)
• M3: 772,374 km (0.116 R)
• M4: 1,065,137 km (0.052 R)
• M5: 1,382,584 km (0.111 R)
• M6: 1,726,359 km (0.098 R)
• M7: 2,034,082 km (0.089 R)
• M8: 2,952,763 km (0.09 R)
• M9: 3,730,223 km (0.035 R)
• M10: 4,153,585 km (0.055 R)
• M11: 5,207,951 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 321.3

Radius: 8

Gravity: 5.02 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.01 AU - 1.09 AU

Year: 695 Days

Day: 11.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 25,408,868 km

• M1: 99,483 km (0.114 R)
• M2: 400,623 km (0.109 R)
• M3: 679,174 km (0.061 R)
• M4: 965,505 km (0.051 R)
• M5: 1,471,145 km (0.112 R)
• M6: 1,777,073 km (0.104 R)
• M7: 2,064,451 km (0.094 R)
• M8: 2,335,223 km (0.087 R)
• M9: 2,619,758 km (0.113 R)
• M10: 2,949,472 km (0.103 R)
• M11: 3,577,633 km (0.073 R)
• M12: 4,277,602 km (0.114 R)
• M13: 5,260,759 km (0.1 R)
• M14: 6,037,172 km (0.064 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 610.4

Radius: 12.4

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 1.29 AU - 1.35 AU

Year: 979 Days

Day: 12.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 25,408,868 km

• M1: 154,235 km (0.093 R)
• M2: 582,085 km (0.078 R)
• M3: 1,117,795 km (0.079 R)
• M4: 1,656,198 km (0.118 R)
• M5: 2,237,535 km (0.119 R)
• M6: 3,308,955 km (0.052 R)
• M7: 4,062,629 km (0.072 R)
• M8: 4,713,679 km (0.109 R)
• M9: 5,261,058 km (0.084 R)
• M10: 7,937,364 km (0.05 R)
• M11: 8,902,569 km (0.058 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.9

Radius: 12.6

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.99 AU - 2.49 AU

Year: 2165 Days

Day: 10.7 Hours

Environment

Temp: -184 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 25,408,868 km

• M1: 156,629 km (0.082 R)
• M2: 589,715 km (0.082 R)
• M3: 1,333,665 km (0.119 R)
• M4: 2,281,667 km (0.094 R)
• M5: 2,820,219 km (0.057 R)
• M6: 3,653,778 km (0.083 R)
• M7: 4,155,829 km (0.041 R)
• M8: 4,783,242 km (0.074 R)
• M9: 5,321,346 km (0.036 R)
• M10: 5,807,988 km (0.091 R)
• M11: 6,276,079 km (0.118 R)
• M12: 7,722,840 km (0.1 R)
• M13: 8,884,917 km (0.081 R)
• M14: 10,127,028 km (0.059 R)
• M15: 10,842,255 km (0.056 R)
• M16: 11,301,670 km (0.106 R)
• M17: 11,922,053 km (0.081 R)
• M18: 13,231,034 km (0.1 R)
• M19: 13,715,133 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330.2

Radius: 14.7

Gravity: 1.53 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.96 AU - 2.84 AU

Year: 2401 Days

Day: 11.6 Hours

Environment

Temp: -191 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 25,408,868 km

• M1: 183,108 km (0.113 R)
• M2: 648,058 km (0.03 R)
• M3: 1,163,572 km (0.115 R)
• M4: 1,699,731 km (0.119 R)
• M5: 2,245,165 km (0.109 R)
• M6: 2,950,818 km (0.041 R)
• M7: 3,452,420 km (0.052 R)
• M8: 3,940,558 km (0.112 R)
• M9: 4,417,326 km (0.091 R)
• M10: 6,933,113 km (0.088 R)
• M11: 7,885,603 km (0.113 R)
• M12: 8,528,126 km (0.084 R)
• M13: 9,492,434 km (0.081 R)
• M14: 10,051,631 km (0.092 R)
• M15: 10,913,763 km (0.086 R)
• M16: 12,318,188 km (0.102 R)
• M17: 13,550,725 km (0.037 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 622.7

Radius: 14.4

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 2.85 AU - 3.95 AU

Year: 4048 Days

Day: 6.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 25,408,868 km

• M1: 179,069 km (0.091 R)
• M2: 715,377 km (0.043 R)
• M3: 1,818,063 km (0.106 R)
• M4: 2,478,089 km (0.055 R)
• M5: 3,057,332 km (0.092 R)
• M6: 4,042,583 km (0.07 R)
• M7: 4,900,826 km (0.111 R)
• M8: 5,793,776 km (0.097 R)
• M9: 6,608,636 km (0.097 R)
• M10: 7,204,185 km (0.105 R)
• M11: 7,835,488 km (0.09 R)
• M12: 8,359,679 km (0.028 R)
• M13: 9,674,793 km (0.047 R)
• M14: 10,994,097 km (0.108 R)
• M15: 11,742,236 km (0.091 R)
• M16: 13,537,560 km (0.119 R)
• M17: 14,449,210 km (0.081 R)
• M18: 19,004,166 km (0.101 R)
• M19: 20,147,243 km (0.08 R)
• M20: 21,742,255 km (0.072 R)
• M21: 22,921,984 km (0.053 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 348 - 18,993 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit