🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.2

Radius: 1.08

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.59 AU - 0.65 AU

Year: 315 Days

Day: 39.9 Hours

Environment

Temp: -136 °C

Axial Tilt: 32.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 539.4

Radius: 9.1

Gravity: 6.51 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.85 AU - 0.97 AU

Year: 561 Days

Day: 5.1 Hours

Environment

Temp: -147 °C

Axial Tilt: 47.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 31,016,753 km

• M1: 115,190 km (0.109 R)
• M2: 499,806 km (0.108 R)
• M3: 808,876 km (0.086 R)
• M4: 1,638,545 km (0.09 R)
• M5: 1,944,324 km (0.038 R)
• M6: 2,662,992 km (0.115 R)
• M7: 2,998,540 km (0.046 R)
• M8: 3,901,961 km (0.103 R)
• M9: 4,293,160 km (0.076 R)
• M10: 5,643,580 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 608.6

Radius: 10.2

Gravity: 5.85 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.87 AU - 1.09 AU

Year: 626 Days

Day: 7.6 Hours

Environment

Temp: -150 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 31,016,753 km

• M1: 126,859 km (0.077 R)
• M2: 560,244 km (0.057 R)
• M3: 1,102,237 km (0.083 R)
• M4: 1,763,759 km (0.084 R)
• M5: 2,152,115 km (0.077 R)
• M6: 2,534,487 km (0.106 R)
• M7: 3,568,059 km (0.114 R)
• M8: 3,922,007 km (0.105 R)
• M9: 4,359,432 km (0.119 R)
• M10: 4,700,814 km (0.091 R)
• M11: 5,490,541 km (0.029 R)
• M12: 6,211,004 km (0.036 R)
• M13: 6,684,781 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 38.3

Radius: 12.3

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.98 AU - 1.4 AU

Year: 838 Days

Day: 5.2 Hours

Environment

Temp: -162 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 31,016,753 km

• M1: 153,787 km (0.059 R)
• M2: 622,327 km (0.072 R)
• M3: 1,096,403 km (0.107 R)
• M4: 1,524,552 km (0.072 R)
• M5: 2,017,776 km (0.108 R)
• M6: 2,543,912 km (0.104 R)
• M7: 3,361,614 km (0.072 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 491.1

Radius: 12.3

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 1.55 AU - 1.55 AU

Year: 1246 Days

Day: 6.6 Hours

Environment

Temp: -182 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 31,016,753 km

• M1: 153,487 km (0.099 R)
• M2: 682,914 km (0.098 R)
• M3: 1,120,638 km (0.111 R)
• M4: 1,795,623 km (0.109 R)
• M5: 2,179,491 km (0.102 R)
• M6: 2,606,743 km (0.074 R)
• M7: 3,311,498 km (0.052 R)
• M8: 4,290,617 km (0.114 R)
• M9: 5,393,751 km (0.067 R)
• M10: 7,220,042 km (0.099 R)
• M11: 7,894,728 km (0.073 R)
• M12: 9,112,156 km (0.035 R)
• M13: 10,326,891 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 889.5

Radius: 14.8

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.26 AU - 1.92 AU

Year: 1295 Days

Day: 13.3 Hours

Environment

Temp: -185 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 31,016,753 km

• M1: 184,155 km (0.079 R)
• M2: 645,515 km (0.104 R)
• M3: 1,113,756 km (0.06 R)
• M4: 1,814,173 km (0.073 R)
• M5: 2,477,042 km (0.093 R)
• M6: 3,106,699 km (0.098 R)
• M7: 4,118,130 km (0.091 R)
• M8: 4,749,882 km (0.116 R)
• M9: 5,510,587 km (0.064 R)
• M10: 6,865,794 km (0.05 R)
• M11: 8,062,577 km (0.043 R)
• M12: 8,666,953 km (0.086 R)
• M13: 9,425,713 km (0.083 R)
• M14: 10,129,721 km (0.106 R)
• M15: 11,286,711 km (0.085 R)
• M16: 12,155,276 km (0.118 R)
• M17: 12,951,436 km (0.066 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 509.5

Radius: 12.7

Gravity: 3.16 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 1.88 AU - 2.26 AU

Year: 1923 Days

Day: 6.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 31,016,753 km

• M1: 165,605 km (0.105 R)
• M2: 563,984 km (0.078 R)
• M3: 1,053,319 km (0.073 R)
• M4: 1,506,002 km (0.114 R)
• M5: 2,158,548 km (0.11 R)
• M6: 2,578,020 km (0.109 R)
• M7: 3,685,493 km (0.114 R)
• M8: 4,272,216 km (0.103 R)
• M9: 5,066,581 km (0.096 R)
• M10: 5,656,744 km (0.12 R)
• M11: 6,123,190 km (0.093 R)
• M12: 8,489,530 km (0.107 R)
• M13: 9,008,784 km (0.09 R)
• M14: 10,010,491 km (0.118 R)
• M15: 11,013,395 km (0.111 R)
• M16: 12,622,470 km (0.095 R)
• M17: 13,178,675 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 962.2

Radius: 10.5

Gravity: 8.73 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 2.89 AU - 4.29 AU

Year: 4392 Days

Day: 6.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 31,016,753 km

• M1: 130,599 km (0.037 R)
• M2: 506,389 km (0.039 R)
• M3: 2,048,593 km (0.073 R)
• M4: 2,638,009 km (0.06 R)
• M5: 3,097,873 km (0.042 R)
• M6: 3,632,386 km (0.116 R)
• M7: 4,373,943 km (0.102 R)
• M8: 6,188,116 km (0.09 R)
• M9: 7,004,172 km (0.098 R)
• M10: 7,350,043 km (0.059 R)
• M11: 8,001,541 km (0.055 R)
• M12: 8,612,649 km (0.058 R)
• M13: 10,999,333 km (0.073 R)
• M14: 13,004,992 km (0.096 R)
• M15: 18,633,761 km (0.034 R)
• M16: 20,609,799 km (0.083 R)
• M17: 24,338,526 km (0.083 R)
• M18: 24,734,512 km (0.095 R)
• M19: 27,201,381 km (0.06 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 213 - 11,797 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit