🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.45

Radius: 1.16

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.5 AU - 0.52 AU

Year: 235 Days

Day: 16.9 Hours

Environment

Temp: -112 °C

Axial Tilt: 5.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.73

Radius: 0.88

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.46 AU - 0.56 AU

Year: 235 Days

Day: 44.4 Hours

Environment

Temp: -108 °C

Axial Tilt: 5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.4

Radius: 0.69

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.56 AU - 0.76 AU

Year: 346 Days

Day: 39.3 Hours

Environment

Temp: -139 °C

Axial Tilt: 39.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 34,180,795 km

• M1: 41,887 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 936.3

Radius: 8.8

Gravity: 12.09 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.73 AU - 1.15 AU

Year: 588 Days

Day: 7.3 Hours

Environment

Temp: -147 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 34,180,795 km

• M1: 109,655 km (0.116 R)
• M2: 452,683 km (0.114 R)
• M3: 785,688 km (0.107 R)
• M4: 1,284,597 km (0.117 R)
• M5: 1,876,107 km (0.099 R)
• M6: 2,550,943 km (0.12 R)
• M7: 3,023,373 km (0.065 R)
• M8: 3,391,982 km (0.103 R)
• M9: 3,818,934 km (0.032 R)
• M10: 4,143,562 km (0.087 R)
• M11: 4,518,454 km (0.091 R)
• M12: 5,427,560 km (0.028 R)
• M13: 6,210,705 km (0.074 R)
• M14: 6,830,040 km (0.109 R)
• M15: 8,023,981 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 949.6

Radius: 10.5

Gravity: 8.61 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.9 AU - 1.36 AU

Year: 776 Days

Day: 12.8 Hours

Environment

Temp: -163 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,180,795 km

• M1: 130,599 km (0.084 R)
• M2: 462,856 km (0.045 R)
• M3: 831,016 km (0.076 R)
• M4: 1,380,340 km (0.082 R)
• M5: 2,100,055 km (0.082 R)
• M6: 2,483,025 km (0.063 R)
• M7: 3,845,712 km (0.036 R)
• M8: 4,356,739 km (0.114 R)
• M9: 4,930,746 km (0.08 R)
• M10: 5,417,986 km (0.089 R)
• M11: 5,814,271 km (0.088 R)
• M12: 6,423,583 km (0.103 R)
• M13: 6,890,927 km (0.111 R)
• M14: 7,452,667 km (0.117 R)
• M15: 7,868,848 km (0.093 R)
• M16: 8,641,371 km (0.118 R)
• M17: 9,046,183 km (0.042 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811.5

Radius: 12

Gravity: 5.64 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 3.07 AU - 3.89 AU

Year: 4192 Days

Day: 13.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 34,180,795 km

• M1: 149,299 km (0.112 R)
• M2: 525,388 km (0.06 R)
• M3: 1,174,044 km (0.045 R)
• M4: 1,812,528 km (0.093 R)
• M5: 2,828,597 km (0.109 R)
• M6: 3,254,801 km (0.088 R)
• M7: 3,875,632 km (0.061 R)
• M8: 6,754,344 km (0.095 R)
• M9: 7,626,499 km (0.11 R)
• M10: 11,553,444 km (0.085 R)
• M11: 12,602,723 km (0.102 R)
• M12: 12,999,606 km (0.099 R)
• M13: 14,187,413 km (0.068 R)
• M14: 15,166,531 km (0.05 R)
• M15: 16,778,299 km (0.063 R)
• M16: 18,185,416 km (0.109 R)
• M17: 20,611,894 km (0.073 R)
• M18: 21,303,186 km (0.068 R)
• M19: 23,544,610 km (0.113 R)
• M20: 24,223,934 km (0.107 R)
• M21: 26,744,958 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 904.4

Radius: 14.3

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 3.39 AU - 3.69 AU

Year: 4301 Days

Day: 14.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 49.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,180,795 km

• M1: 177,872 km (0.107 R)
• M2: 1,277,566 km (0.079 R)
• M3: 2,891,727 km (0.094 R)
• M4: 4,293,309 km (0.051 R)
• M5: 6,578,566 km (0.114 R)
• M6: 9,377,842 km (0.051 R)
• M7: 11,954,964 km (0.083 R)
• M8: 13,354,901 km (0.079 R)
• M9: 14,040,807 km (0.05 R)
• M10: 15,540,825 km (0.108 R)
• M11: 16,359,425 km (0.103 R)
• M12: 18,403,081 km (0.104 R)
• M13: 20,681,606 km (0.095 R)
• M14: 21,528,929 km (0.069 R)
• M15: 24,365,604 km (0.12 R)
• M16: 25,231,326 km (0.117 R)
• M17: 26,444,565 km (0.081 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 675

Radius: 14.3

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 4.53 AU - 4.59 AU

Year: 6287 Days

Day: 5.6 Hours

Environment

Temp: -210 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 34,180,795 km

• M1: 177,872 km (0.061 R)
• M2: 721,959 km (0.087 R)
• M3: 1,308,383 km (0.087 R)
• M4: 1,956,291 km (0.107 R)
• M5: 4,479,409 km (0.108 R)
• M6: 4,935,084 km (0.098 R)
• M7: 5,692,648 km (0.056 R)
• M8: 6,973,355 km (0.07 R)
• M9: 8,518,701 km (0.113 R)
• M10: 9,053,514 km (0.075 R)
• M11: 10,190,906 km (0.066 R)
• M12: 13,450,195 km (0.033 R)
• M13: 13,950,600 km (0.058 R)
• M14: 16,642,314 km (0.064 R)
• M15: 18,755,683 km (0.098 R)
• M16: 23,430,318 km (0.063 R)
• M17: 24,648,194 km (0.079 R)
• M18: 28,282,824 km (0.118 R)
• M19: 30,512,879 km (0.089 R)
• M20: 32,260,631 km (0.072 R)
• M21: 33,058,586 km (0.084 R)
• M22: 34,693,841 km (0.078 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 113.4

Radius: 11.5

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 4.27 AU - 6.73 AU

Year: 8328 Days

Day: 13.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,180,795 km

• M1: 185,053 km (0.101 R)
• M2: 713,582 km (0.108 R)
• M3: 2,238,882 km (0.1 R)
• M4: 3,196,458 km (0.078 R)
• M5: 3,870,695 km (0.12 R)
• M6: 6,356,264 km (0.074 R)
• M7: 11,215,951 km (0.12 R)
• M8: 11,602,661 km (0.053 R)
• M9: 11,998,198 km (0.101 R)
• M10: 14,922,088 km (0.043 R)
• M11: 15,390,479 km (0.095 R)
• M12: 18,587,984 km (0.092 R)
• M13: 19,621,556 km (0.086 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 98.4

Radius: 7.6

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 8.26 AU - 8.66 AU

Year: 15888 Days

Day: 21.4 Hours

Environment

Temp: -222 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 34,180,795 km

• M1: 94,995 km (0.1 R)
• M2: 428,598 km (0.091 R)
• M3: 934,538 km (0.064 R)
• M4: 1,581,100 km (0.074 R)
• M5: 3,724,538 km (0.059 R)
• M6: 4,616,141 km (0.11 R)
• M7: 5,521,807 km (0.067 R)
• M8: 6,710,811 km (0.119 R)
• M9: 12,242,940 km (0.096 R)
• M10: 18,209,352 km (0.084 R)
• M11: 20,660,513 km (0.117 R)
• M12: 27,159,793 km (0.064 R)
• M13: 30,916,345 km (0.115 R)
• M14: 32,471,714 km (0.073 R)
• M15: 33,874,942 km (0.102 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: 485 - 11,753 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit