🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.17

Radius: 1.59

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.64 AU - 0.66 AU

Year: 344 Days

Day: 26.8 Hours

Environment

Temp: -133 °C

Axial Tilt: 39.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 266.8

Radius: 13.4

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.66 AU - 0.72 AU

Year: 376 Days

Day: 8.5 Hours

Environment

Temp: -139 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 35,237,024 km

• M1: 166,802 km (0.099 R)
• M2: 816,804 km (0.091 R)
• M3: 1,339,200 km (0.095 R)
• M4: 1,850,974 km (0.086 R)
• M5: 2,477,042 km (0.097 R)
• M6: 2,900,104 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 570.7

Radius: 11.7

Gravity: 4.17 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.88 AU - 1.12 AU

Year: 656 Days

Day: 5.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 59.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,237,024 km

• M1: 145,559 km (0.08 R)
• M2: 512,672 km (0.088 R)
• M3: 930,798 km (0.034 R)
• M4: 1,388,119 km (0.045 R)
• M5: 1,785,750 km (0.066 R)
• M6: 2,308,295 km (0.039 R)
• M7: 3,402,903 km (0.106 R)
• M8: 4,655,785 km (0.09 R)
• M9: 5,672,153 km (0.079 R)
• M10: 6,137,103 km (0.09 R)
• M11: 6,527,404 km (0.069 R)
• M12: 7,250,410 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 655.6

Radius: 9

Gravity: 8.09 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.96 AU - 1.22 AU

Year: 747 Days

Day: 5.9 Hours

Environment

Temp: -165 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 35,237,024 km

• M1: 111,899 km (0.058 R)
• M2: 463,155 km (0.056 R)
• M3: 801,545 km (0.039 R)
• M4: 1,089,970 km (0.112 R)
• M5: 1,420,282 km (0.117 R)
• M6: 1,740,870 km (0.082 R)
• M7: 2,062,207 km (0.118 R)
• M8: 2,455,200 km (0.078 R)
• M9: 2,779,528 km (0.076 R)
• M10: 3,196,159 km (0.057 R)
• M11: 3,710,626 km (0.062 R)
• M12: 4,870,907 km (0.096 R)
• M13: 5,385,972 km (0.102 R)
• M14: 5,762,211 km (0.082 R)
• M15: 6,095,664 km (0.112 R)
• M16: 6,758,383 km (0.106 R)
• M17: 7,286,314 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 734.8

Radius: 12.4

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 2.76 AU - 2.82 AU

Year: 3057 Days

Day: 7 Hours

Environment

Temp: -192 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 35,237,024 km

• M1: 154,235 km (0.099 R)
• M2: 832,363 km (0.092 R)
• M3: 1,283,400 km (0.111 R)
• M4: 1,689,409 km (0.114 R)
• M5: 2,391,920 km (0.044 R)
• M6: 2,885,294 km (0.066 R)
• M7: 3,354,134 km (0.104 R)
• M8: 3,975,563 km (0.052 R)
• M9: 5,631,013 km (0.1 R)
• M10: 7,609,744 km (0.098 R)
• M11: 8,792,016 km (0.092 R)
• M12: 10,933,211 km (0.105 R)
• M13: 12,346,761 km (0.055 R)
• M14: 16,382,463 km (0.065 R)
• M15: 18,229,548 km (0.099 R)
• M16: 19,718,645 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32.9

Radius: 11.8

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 3.04 AU - 3.62 AU

Year: 3986 Days

Day: 7.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 35,237,024 km

• M1: 146,756 km (0.105 R)
• M2: 524,939 km (0.105 R)
• M3: 895,792 km (0.111 R)
• M4: 1,795,922 km (0.113 R)
• M5: 2,339,561 km (0.117 R)
• M6: 3,106,849 km (0.049 R)
• M7: 3,514,353 km (0.111 R)
• M8: 4,034,954 km (0.109 R)
• M9: 5,575,064 km (0.113 R)
• M10: 7,078,971 km (0.078 R)
• M11: 7,887,997 km (0.062 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129.9

Radius: 8.8

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 5.17 AU - 5.95 AU

Year: 8600 Days

Day: 8.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 35,237,024 km

• M1: 109,506 km (0.069 R)
• M2: 739,612 km (0.068 R)
• M3: 1,818,362 km (0.112 R)
• M4: 2,236,039 km (0.114 R)
• M5: 2,716,847 km (0.118 R)
• M6: 3,535,895 km (0.068 R)
• M7: 3,906,449 km (0.087 R)
• M8: 5,358,895 km (0.046 R)
• M9: 6,309,440 km (0.056 R)
• M10: 6,793,987 km (0.032 R)
• M11: 7,533,749 km (0.08 R)
• M12: 10,696,098 km (0.119 R)
• M13: 11,741,039 km (0.112 R)
• M14: 12,195,966 km (0.104 R)
• M15: 13,238,065 km (0.063 R)
• M16: 14,083,293 km (0.095 R)
• M17: 14,389,969 km (0.12 R)
• M18: 16,949,439 km (0.034 R)
• M19: 19,543,615 km (0.101 R)
• M20: 22,184,467 km (0.105 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 139.6

Radius: 4.5

Gravity: 6.89 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 7.23 AU - 8.13 AU

Year: 13962 Days

Day: 18.3 Hours

Environment

Temp: -225 °C

Axial Tilt: 11.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 35,237,024 km

• M1: 89,011 km (0.101 R)
• M2: 354,697 km (0.093 R)
• M3: 1,114,205 km (0.106 R)
• M4: 1,500,616 km (0.093 R)
• M5: 1,724,863 km (0.081 R)
• M6: 2,079,261 km (0.095 R)
• M7: 3,261,832 km (0.108 R)
• M8: 3,922,456 km (0.104 R)
• M9: 4,322,930 km (0.044 R)
• M10: 7,579,376 km (0.085 R)
• M11: 8,319,437 km (0.106 R)
• M12: 9,851,917 km (0.101 R)
• M13: 11,714,112 km (0.103 R)
• M14: 21,433,635 km (0.062 R)
• M15: 23,786,510 km (0.045 R)
• M16: 25,362,524 km (0.098 R)
• M17: 31,670,767 km (0.079 R)
• M18: 35,026,397 km (0.109 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 298 - 18,373 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit