🌌 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: 4.47

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.63 AU - 0.67 AU

Year: 344 Days

Day: 35.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 15.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 432.8

Radius: 15

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.66 AU - 0.88 AU

Year: 443 Days

Day: 8.2 Hours

Environment

Temp: -152 °C

Axial Tilt: 22.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 29,264,980 km

• M1: 186,549 km (0.032 R)
• M2: 799,750 km (0.091 R)
• M3: 1,404,574 km (0.107 R)
• M4: 1,918,892 km (0.086 R)
• M5: 2,497,686 km (0.09 R)
• M6: 3,757,899 km (0.081 R)
• M7: 4,620,480 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 549.1

Radius: 12.7

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.8 AU - 1 AU

Year: 560 Days

Day: 14.8 Hours

Environment

Temp: -152 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 29,264,980 km

• M1: 157,975 km (0.098 R)
• M2: 663,616 km (0.115 R)
• M3: 1,880,595 km (0.106 R)
• M4: 2,424,832 km (0.081 R)
• M5: 2,830,541 km (0.085 R)
• M6: 3,525,573 km (0.08 R)
• M7: 4,418,972 km (0.098 R)
• M8: 5,340,195 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 973.5

Radius: 10.3

Gravity: 9.18 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.79 AU - 1.03 AU

Year: 569 Days

Day: 8.8 Hours

Environment

Temp: -157 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 29,264,980 km

• M1: 167,998 km (0.116 R)
• M2: 506,688 km (0.03 R)
• M3: 848,070 km (0.047 R)
• M4: 1,181,524 km (0.09 R)
• M5: 1,573,919 km (0.049 R)
• M6: 2,007,753 km (0.076 R)
• M7: 2,563,509 km (0.086 R)
• M8: 2,890,081 km (0.068 R)
• M9: 3,373,432 km (0.079 R)
• M10: 3,711,224 km (0.106 R)
• M11: 4,056,945 km (0.082 R)
• M12: 4,408,350 km (0.054 R)
• M13: 4,897,385 km (0.118 R)
• M14: 6,259,773 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49

Radius: 12.2

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 1.07 AU - 1.41 AU

Year: 906 Days

Day: 13.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 29,264,980 km

• M1: 153,637 km (0.069 R)
• M2: 542,442 km (0.1 R)
• M3: 1,187,957 km (0.105 R)
• M4: 1,653,954 km (0.119 R)
• M5: 2,099,307 km (0.091 R)
• M6: 3,080,819 km (0.117 R)
• M7: 3,654,227 km (0.075 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 955.5

Radius: 10.2

Gravity: 9.18 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 1.16 AU - 1.36 AU

Year: 928 Days

Day: 11 Hours

Environment

Temp: -166 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 29,264,980 km

• M1: 126,859 km (0.097 R)
• M2: 654,491 km (0.103 R)
• M3: 1,196,783 km (0.102 R)
• M4: 1,661,135 km (0.104 R)
• M5: 2,001,769 km (0.092 R)
• M6: 2,650,575 km (0.083 R)
• M7: 3,024,570 km (0.119 R)
• M8: 3,478,450 km (0.115 R)
• M9: 4,075,944 km (0.107 R)
• M10: 4,541,193 km (0.101 R)
• M11: 5,177,134 km (0.111 R)
• M12: 5,619,494 km (0.097 R)
• M13: 6,152,811 km (0.094 R)
• M14: 6,719,488 km (0.101 R)
• M15: 8,438,217 km (0.042 R)
• M16: 9,224,803 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 463.7

Radius: 11.1

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 2.85 AU - 4.21 AU

Year: 4351 Days

Day: 7.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 29,264,980 km

• M1: 141,669 km (0.041 R)
• M2: 500,106 km (0.057 R)
• M3: 947,703 km (0.103 R)
• M4: 1,325,736 km (0.12 R)
• M5: 2,226,914 km (0.115 R)
• M6: 3,796,794 km (0.106 R)
• M7: 4,179,316 km (0.089 R)
• M8: 5,022,749 km (0.117 R)
• M9: 6,377,806 km (0.078 R)
• M10: 8,994,572 km (0.089 R)
• M11: 10,315,222 km (0.075 R)
• M12: 13,049,721 km (0.091 R)
• M13: 15,420,848 km (0.066 R)
• M14: 16,962,753 km (0.075 R)
• M15: 17,947,705 km (0.062 R)
• M16: 18,424,175 km (0.076 R)
• M17: 19,589,692 km (0.11 R)
• M18: 20,869,053 km (0.06 R)
• M19: 23,950,021 km (0.069 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.2

Radius: 9.4

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 3.39 AU - 5.59 AU

Year: 6241 Days

Day: 5.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,264,980 km

• M1: 117,135 km (0.099 R)
• M2: 653,144 km (0.088 R)
• M3: 1,117,496 km (0.055 R)
• M4: 4,075,046 km (0.083 R)
• M5: 4,630,652 km (0.083 R)
• M6: 6,012,488 km (0.067 R)
• M7: 6,930,121 km (0.11 R)
• M8: 7,757,846 km (0.075 R)
• M9: 9,692,296 km (0.111 R)
• M10: 10,330,481 km (0.069 R)
• M11: 12,072,698 km (0.044 R)
• M12: 13,632,405 km (0.105 R)
• M13: 16,365,259 km (0.085 R)
• M14: 19,980,441 km (0.109 R)
• M15: 22,372,960 km (0.098 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: 165 - 13,846 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit