🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.54

Radius: 0.78

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.53 AU - 0.81 AU

Year: 349 Days

Day: 29.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 14.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 462.3

Radius: 11.6

Gravity: 3.44 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.62 AU - 0.94 AU

Year: 438 Days

Day: 13.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,078,879 km

• M1: 144,212 km (0.078 R)
• M2: 550,969 km (0.084 R)
• M3: 1,104,930 km (0.039 R)
• M4: 1,513,781 km (0.061 R)
• M5: 1,977,833 km (0.085 R)
• M6: 2,356,765 km (0.079 R)
• M7: 2,904,443 km (0.088 R)
• M8: 3,997,704 km (0.075 R)
• M9: 4,984,302 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 82.9

Radius: 13

Gravity: 0.49 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.64 AU - 0.98 AU

Year: 464 Days

Day: 13.3 Hours

Environment

Temp: -142 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 34,078,879 km

• M1: 161,715 km (0.055 R)
• M2: 747,690 km (0.088 R)
• M3: 1,172,698 km (0.115 R)
• M4: 1,634,207 km (0.033 R)
• M5: 2,253,094 km (0.101 R)
• M6: 2,981,785 km (0.073 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 940.7

Radius: 11.9

Gravity: 6.64 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.07 AU - 1.13 AU

Year: 734 Days

Day: 8.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,078,879 km

• M1: 148,102 km (0.115 R)
• M2: 548,725 km (0.112 R)
• M3: 1,120,338 km (0.036 R)
• M4: 1,562,849 km (0.112 R)
• M5: 2,034,980 km (0.046 R)
• M6: 2,434,556 km (0.099 R)
• M7: 2,986,422 km (0.101 R)
• M8: 3,408,887 km (0.104 R)
• M9: 4,712,632 km (0.119 R)
• M10: 6,012,638 km (0.088 R)
• M11: 7,049,201 km (0.102 R)
• M12: 7,658,364 km (0.106 R)
• M13: 8,150,690 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 499.9

Radius: 12.7

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.35 AU - 1.41 AU

Year: 1031 Days

Day: 14.6 Hours

Environment

Temp: -184 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,078,879 km

• M1: 157,975 km (0.072 R)
• M2: 604,226 km (0.09 R)
• M3: 1,101,938 km (0.105 R)
• M4: 1,586,485 km (0.11 R)
• M5: 2,183,082 km (0.116 R)
• M6: 3,385,400 km (0.118 R)
• M7: 3,816,990 km (0.074 R)
• M8: 4,237,060 km (0.081 R)
• M9: 5,264,199 km (0.063 R)
• M10: 5,786,745 km (0.109 R)
• M11: 6,823,757 km (0.052 R)
• M12: 7,759,193 km (0.086 R)
• M13: 9,019,256 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 272.1

Radius: 8.3

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.22 AU - 1.76 AU

Year: 1156 Days

Day: 6 Hours

Environment

Temp: -172 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 34,078,879 km

• M1: 103,372 km (0.11 R)
• M2: 405,560 km (0.072 R)
• M3: 928,404 km (0.092 R)
• M4: 1,264,700 km (0.087 R)
• M5: 1,585,139 km (0.097 R)
• M6: 1,878,500 km (0.074 R)
• M7: 2,643,694 km (0.064 R)
• M8: 3,186,285 km (0.115 R)
• M9: 4,191,284 km (0.106 R)
• M10: 5,985,560 km (0.105 R)
• M11: 6,640,799 km (0.116 R)
• M12: 7,007,912 km (0.108 R)
• M13: 7,735,855 km (0.086 R)
• M14: 8,142,463 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 721.2

Radius: 12

Gravity: 5.01 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 2.73 AU - 2.99 AU

Year: 3075 Days

Day: 10.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 34,078,879 km

• M1: 150,346 km (0.087 R)
• M2: 528,230 km (0.065 R)
• M3: 986,299 km (0.045 R)
• M4: 1,360,144 km (0.06 R)
• M5: 1,953,150 km (0.034 R)
• M6: 2,682,439 km (0.033 R)
• M7: 3,128,391 km (0.114 R)
• M8: 3,881,018 km (0.072 R)
• M9: 4,612,551 km (0.119 R)
• M10: 5,879,944 km (0.11 R)
• M11: 7,621,413 km (0.089 R)
• M12: 8,147,848 km (0.096 R)
• M13: 11,195,456 km (0.098 R)
• M14: 11,660,855 km (0.116 R)
• M15: 12,450,432 km (0.107 R)
• M16: 12,904,312 km (0.113 R)
• M17: 14,730,753 km (0.119 R)
• M18: 15,705,981 km (0.113 R)
• M19: 16,778,598 km (0.111 R)
• M20: 17,220,959 km (0.104 R)
• M21: 18,595,165 km (0.073 R)
• M22: 19,611,982 km (0.088 R)
• M23: 20,165,195 km (0.051 R)
• M24: 20,602,469 km (0.117 R)
• M25: 21,821,692 km (0.088 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 809.9

Radius: 11.3

Gravity: 6.34 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2.49 AU - 3.63 AU

Year: 3403 Days

Day: 14.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 34,078,879 km

• M1: 140,472 km (0.114 R)
• M2: 752,178 km (0.099 R)
• M3: 1,140,534 km (0.114 R)
• M4: 2,066,695 km (0.104 R)
• M5: 2,563,060 km (0.074 R)
• M6: 3,030,703 km (0.119 R)
• M7: 4,030,466 km (0.103 R)
• M8: 4,501,250 km (0.113 R)
• M9: 4,958,571 km (0.104 R)
• M10: 5,854,961 km (0.086 R)
• M11: 7,107,544 km (0.118 R)
• M12: 8,933,237 km (0.065 R)
• M13: 9,658,188 km (0.082 R)
• M14: 10,176,545 km (0.094 R)
• M15: 10,629,527 km (0.069 R)
• M16: 13,293,267 km (0.105 R)
• M17: 14,701,282 km (0.111 R)
• M18: 15,121,353 km (0.066 R)
• M19: 17,752,779 km (0.109 R)
• M20: 18,898,549 km (0.085 R)
• M21: 19,837,276 km (0.092 R)
• M22: 24,633,533 km (0.064 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 579.1

Radius: 8.3

Gravity: 8.41 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 4.38 AU - 5.06 AU

Year: 6520 Days

Day: 5.5 Hours

Environment

Temp: -205 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 34,078,879 km

• M1: 103,522 km (0.032 R)
• M2: 742,753 km (0.068 R)
• M3: 1,011,431 km (0.048 R)
• M4: 1,415,196 km (0.076 R)
• M5: 1,768,995 km (0.102 R)
• M6: 2,118,605 km (0.092 R)
• M7: 2,880,657 km (0.105 R)
• M8: 3,199,300 km (0.103 R)
• M9: 3,653,180 km (0.073 R)
• M10: 5,276,766 km (0.113 R)
• M11: 6,428,520 km (0.106 R)
• M12: 7,223,932 km (0.082 R)
• M13: 8,478,011 km (0.057 R)
• M14: 10,552,335 km (0.112 R)
• M15: 11,119,610 km (0.119 R)
• M16: 11,806,862 km (0.077 R)
• M17: 15,135,714 km (0.115 R)
• M18: 18,631,517 km (0.105 R)
• M19: 18,904,982 km (0.099 R)
• M20: 21,563,187 km (0.064 R)
• M21: 22,322,396 km (0.108 R)
• M22: 23,177,796 km (0.066 R)
• M23: 29,233,070 km (0.115 R)
• M24: 30,920,533 km (0.119 R)
• M25: 33,471,028 km (0.1 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 284 - 19,012 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit