🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.5 AU - 0.76 AU

Year: 328 Days

Day: 33.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 27.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.7

Radius: 13.7

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 0.64 AU - 0.72 AU

Year: 368 Days

Day: 6.7 Hours

Environment

Temp: -131 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 61,802,207 km

• M1: 170,392 km (0.042 R)
• M2: 1,146,967 km (0.096 R)
• M3: 1,751,193 km (0.037 R)
• M4: 2,391,771 km (0.07 R)
• M5: 2,819,920 km (0.058 R)
• M6: 3,342,465 km (0.11 R)
• M7: 3,941,455 km (0.108 R)
• M8: 4,453,379 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 646.6

Radius: 12

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 1.06 AU - 1.16 AU

Year: 767 Days

Day: 14.1 Hours

Environment

Temp: -168 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 61,802,207 km

• M1: 149,897 km (0.097 R)
• M2: 621,430 km (0.074 R)
• M3: 1,356,105 km (0.092 R)
• M4: 1,879,548 km (0.117 R)
• M5: 2,829,943 km (0.098 R)
• M6: 3,393,777 km (0.119 R)
• M7: 3,810,407 km (0.084 R)
• M8: 5,491,139 km (0.103 R)
• M9: 7,482,138 km (0.096 R)
• M10: 8,290,864 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 478.9

Radius: 12.3

Gravity: 3.17 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.67 AU - 2.15 AU

Year: 1732 Days

Day: 9.2 Hours

Environment

Temp: -198 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 61,802,207 km

• M1: 153,188 km (0.038 R)
• M2: 605,572 km (0.071 R)
• M3: 1,989,801 km (0.03 R)
• M4: 2,374,268 km (0.118 R)
• M5: 4,012,065 km (0.031 R)
• M6: 4,519,651 km (0.094 R)
• M7: 6,281,166 km (0.053 R)
• M8: 6,942,388 km (0.085 R)
• M9: 7,408,685 km (0.113 R)
• M10: 8,204,097 km (0.073 R)
• M11: 8,666,803 km (0.088 R)
• M12: 9,055,608 km (0.12 R)
• M13: 11,424,341 km (0.084 R)

Asteroid Belt

Center: 2.19 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 752.5

Radius: 12.5

Gravity: 4.82 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 2.05 AU - 2.87 AU

Year: 2531 Days

Day: 13.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 61,802,207 km

• M1: 155,432 km (0.1 R)
• M2: 629,358 km (0.077 R)
• M3: 1,026,541 km (0.077 R)
• M4: 1,508,695 km (0.078 R)
• M5: 2,367,835 km (0.102 R)
• M6: 3,128,540 km (0.09 R)
• M7: 4,208,487 km (0.06 R)
• M8: 6,274,883 km (0.094 R)
• M9: 7,856,581 km (0.065 R)
• M10: 8,740,555 km (0.078 R)
• M11: 9,580,996 km (0.06 R)
• M12: 11,260,980 km (0.057 R)
• M13: 12,513,862 km (0.102 R)
• M14: 12,907,304 km (0.103 R)
• M15: 16,307,963 km (0.071 R)
• M16: 17,364,573 km (0.095 R)
• M17: 17,964,759 km (0.091 R)
• M18: 19,438,747 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 329

Radius: 13

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 2.31 AU - 3.17 AU

Year: 2975 Days

Day: 5.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 61,802,207 km

• M1: 161,715 km (0.086 R)
• M2: 784,491 km (0.069 R)
• M3: 1,286,990 km (0.053 R)
• M4: 2,075,371 km (0.113 R)
• M5: 2,572,934 km (0.06 R)
• M6: 3,295,043 km (0.086 R)
• M7: 5,302,646 km (0.074 R)
• M8: 5,893,408 km (0.106 R)
• M9: 7,263,874 km (0.026 R)
• M10: 8,392,590 km (0.085 R)
• M11: 10,300,711 km (0.108 R)
• M12: 10,736,789 km (0.038 R)
• M13: 12,647,004 km (0.084 R)
• M14: 13,402,623 km (0.108 R)
• M15: 14,099,300 km (0.116 R)
• M16: 14,637,703 km (0.092 R)
• M17: 15,236,244 km (0.094 R)
• M18: 15,947,283 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 30.7

Radius: 11.1

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.47 AU - 5.89 AU

Year: 7734 Days

Day: 8.1 Hours

Environment

Temp: -227 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 61,802,207 km

• M1: 144,512 km (0.04 R)
• M2: 653,294 km (0.115 R)
• M3: 1,081,892 km (0.1 R)
• M4: 1,850,825 km (0.085 R)
• M5: 2,217,489 km (0.105 R)
• M6: 4,411,192 km (0.039 R)
• M7: 5,918,690 km (0.108 R)
• M8: 6,350,280 km (0.071 R)
• M9: 6,958,395 km (0.08 R)
• M10: 8,801,740 km (0.104 R)
• M11: 9,754,230 km (0.062 R)
• M12: 10,703,877 km (0.098 R)
• M13: 14,007,297 km (0.057 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 323.4

Radius: 5.2

Gravity: 11.96 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 9.19 AU - 11.17 AU

Year: 21307 Days

Day: 21.2 Hours

Environment

Temp: -231 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 61,802,207 km

• M1: 226,940 km (0.113 R)
• M2: 455,526 km (0.068 R)
• M3: 1,052,720 km (0.055 R)
• M4: 1,279,810 km (0.109 R)
• M5: 1,649,616 km (0.101 R)
• M6: 1,994,289 km (0.097 R)
• M7: 3,017,688 km (0.119 R)
• M8: 3,533,203 km (0.105 R)
• M9: 5,287,986 km (0.103 R)
• M10: 5,653,004 km (0.063 R)
• M11: 7,417,362 km (0.104 R)
• M12: 8,645,710 km (0.119 R)
• M13: 8,846,021 km (0.058 R)
• M14: 9,152,248 km (0.094 R)
• M15: 9,840,249 km (0.075 R)
• M16: 11,140,703 km (0.107 R)
• M17: 16,022,231 km (0.102 R)
• M18: 16,631,094 km (0.051 R)
• M19: 18,549,986 km (0.077 R)
• M20: 19,306,204 km (0.115 R)
• M21: 20,346,058 km (0.093 R)
• M22: 20,611,744 km (0.087 R)
• M23: 24,678,712 km (0.046 R)
• M24: 35,365,385 km (0.075 R)
• M25: 40,439,296 km (0.096 R)
• M26: 41,565,918 km (0.071 R)
• M27: 42,713,334 km (0.026 R)
• M28: 43,734,638 km (0.092 R)
• M29: 46,282,140 km (0.102 R)
• M30: 47,359,395 km (0.099 R)
• M31: 50,853,552 km (0.08 R)
• M32: 51,342,887 km (0.089 R)
• M33: 51,835,363 km (0.114 R)
• M34: 54,345,466 km (0.096 R)
• M35: 55,716,680 km (0.101 R)
• M36: 61,802,172 km (0.036 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 290 - 17,930 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit