🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.64

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.43 AU - 0.63 AU

Year: 253 Days

Day: 23.8 Hours

Environment

Temp: -130 °C

Axial Tilt: 48.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 777.3

Radius: 14

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.6 AU - 0.98 AU

Year: 461 Days

Day: 14.2 Hours

Environment

Temp: -139 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 60,495,519 km

• M1: 174,132 km (0.08 R)
• M2: 674,537 km (0.087 R)
• M3: 1,109,867 km (0.084 R)
• M4: 1,571,974 km (0.096 R)
• M5: 2,020,469 km (0.086 R)
• M6: 2,506,961 km (0.106 R)
• M7: 2,972,360 km (0.117 R)
• M8: 3,582,570 km (0.103 R)
• M9: 4,491,826 km (0.066 R)
• M10: 6,056,769 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 155.9

Radius: 9.6

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.65 AU - 0.99 AU

Year: 487 Days

Day: 13 Hours

Environment

Temp: -155 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 60,495,519 km

• M1: 120,277 km (0.071 R)
• M2: 507,286 km (0.075 R)
• M3: 835,055 km (0.078 R)
• M4: 1,267,692 km (0.062 R)
• M5: 1,609,673 km (0.049 R)
• M6: 2,267,455 km (0.117 R)
• M7: 2,751,105 km (0.118 R)
• M8: 3,202,442 km (0.057 R)
• M9: 3,790,960 km (0.058 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 720.5

Radius: 13.8

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1.1 AU - 1.2 AU

Year: 809 Days

Day: 9.9 Hours

Environment

Temp: -169 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 60,495,519 km

• M1: 172,038 km (0.103 R)
• M2: 635,941 km (0.093 R)
• M3: 1,408,015 km (0.093 R)
• M4: 1,837,211 km (0.109 R)
• M5: 2,387,432 km (0.075 R)
• M6: 3,034,742 km (0.11 R)
• M7: 3,581,074 km (0.078 R)
• M8: 4,192,780 km (0.047 R)
• M9: 4,769,629 km (0.085 R)
• M10: 5,569,678 km (0.118 R)
• M11: 6,373,168 km (0.104 R)
• M12: 6,958,246 km (0.08 R)
• M13: 7,650,136 km (0.092 R)
• M14: 8,618,034 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 869

Radius: 11

Gravity: 7.18 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 1.08 AU - 1.3 AU

Year: 852 Days

Day: 6.8 Hours

Environment

Temp: -158 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 60,495,519 km

• M1: 136,882 km (0.101 R)
• M2: 515,963 km (0.051 R)
• M3: 1,165,367 km (0.101 R)
• M4: 1,688,212 km (0.045 R)
• M5: 2,602,255 km (0.11 R)
• M6: 3,505,826 km (0.062 R)
• M7: 3,990,822 km (0.069 R)
• M8: 5,720,024 km (0.096 R)
• M9: 6,307,196 km (0.058 R)
• M10: 7,050,548 km (0.074 R)
• M11: 8,182,854 km (0.096 R)
• M12: 8,956,724 km (0.03 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 127

Radius: 8.3

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 1.6 AU - 2.2 AU

Year: 1718 Days

Day: 8.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 107.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 60,495,519 km

• M1: 103,223 km (0.099 R)
• M2: 363,972 km (0.065 R)
• M3: 682,465 km (0.112 R)
• M4: 1,203,515 km (0.101 R)
• M5: 2,006,407 km (0.113 R)
• M6: 2,300,666 km (0.069 R)
• M7: 2,657,905 km (0.108 R)
• M8: 3,178,656 km (0.053 R)
• M9: 3,511,810 km (0.103 R)
• M10: 4,439,616 km (0.111 R)
• M11: 4,788,329 km (0.083 R)
• M12: 5,391,806 km (0.094 R)
• M13: 6,287,748 km (0.079 R)
• M14: 7,302,171 km (0.069 R)
• M15: 7,671,229 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 596.3

Radius: 7.1

Gravity: 11.83 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 5.19 AU - 7.17 AU

Year: 10078 Days

Day: 21 Hours

Environment

Temp: -216 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,495,519 km

• M1: 125,213 km (0.071 R)
• M2: 1,022,501 km (0.11 R)
• M3: 1,365,679 km (0.079 R)
• M4: 1,621,342 km (0.071 R)
• M5: 2,160,044 km (0.11 R)
• M6: 2,688,274 km (0.087 R)
• M7: 3,894,033 km (0.118 R)
• M8: 5,457,480 km (0.117 R)
• M9: 7,159,305 km (0.083 R)
• M10: 8,636,883 km (0.109 R)
• M11: 10,562,208 km (0.116 R)
• M12: 11,460,992 km (0.05 R)
• M13: 12,698,615 km (0.086 R)
• M14: 12,991,827 km (0.078 R)
• M15: 14,976,991 km (0.072 R)
• M16: 16,384,408 km (0.109 R)
• M17: 17,227,242 km (0.068 R)
• M18: 24,491,116 km (0.089 R)
• M19: 26,629,468 km (0.093 R)
• M20: 33,007,873 km (0.104 R)
• M21: 34,577,005 km (0.026 R)
• M22: 37,142,159 km (0.057 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 401.7

Radius: 4.3

Gravity: 21.73 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 7.36 AU - 11.18 AU

Year: 18515 Days

Day: 16.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 60,495,519 km

• M1: 54,454 km (0.076 R)
• M2: 300,991 km (0.091 R)
• M3: 1,408,913 km (0.108 R)
• M4: 1,978,881 km (0.077 R)
• M5: 2,578,918 km (0.119 R)
• M6: 4,219,258 km (0.112 R)
• M7: 5,746,952 km (0.106 R)
• M8: 5,898,345 km (0.105 R)
• M9: 12,721,205 km (0.043 R)
• M10: 18,395,452 km (0.084 R)
• M11: 20,431,778 km (0.095 R)
• M12: 23,857,569 km (0.033 R)
• M13: 24,845,065 km (0.118 R)
• M14: 25,757,013 km (0.105 R)
• M15: 28,516,346 km (0.099 R)
• M16: 30,883,882 km (0.09 R)
• M17: 31,819,318 km (0.071 R)
• M18: 36,650,880 km (0.073 R)
• M19: 46,507,734 km (0.08 R)
• M20: 47,118,991 km (0.071 R)
• M21: 53,528,661 km (0.071 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 200 - 19,472 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit