🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.59

Radius: 0.81

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.41 AU - 0.63 AU

Year: 242 Days

Day: 47.1 Hours

Environment

Temp: -121 °C

Axial Tilt: 44.7 °

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: 589.4

Radius: 13.5

Gravity: 3.23 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.76 AU - 0.8 AU

Year: 445 Days

Day: 12.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 46,955,043 km

• M1: 169,345 km (0.096 R)
• M2: 597,344 km (0.103 R)
• M3: 1,196,633 km (0.049 R)
• M4: 1,644,829 km (0.09 R)
• M5: 2,539,873 km (0.11 R)
• M6: 3,175,215 km (0.033 R)
• M7: 3,615,781 km (0.093 R)
• M8: 4,313,056 km (0.084 R)
• M9: 4,856,096 km (0.088 R)
• M10: 5,656,894 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 645

Radius: 10.9

Gravity: 5.43 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.63 AU - 1.01 AU

Year: 479 Days

Day: 11 Hours

Environment

Temp: -156 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 46,955,043 km

• M1: 135,984 km (0.114 R)
• M2: 487,091 km (0.098 R)
• M3: 889,060 km (0.039 R)
• M4: 1,458,729 km (0.116 R)
• M5: 2,084,946 km (0.095 R)
• M6: 2,633,222 km (0.077 R)
• M7: 3,069,300 km (0.111 R)
• M8: 3,781,834 km (0.108 R)
• M9: 4,751,079 km (0.049 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 693.3

Radius: 9

Gravity: 8.56 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.91 AU - 0.99 AU

Year: 598 Days

Day: 11.7 Hours

Environment

Temp: -165 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 46,955,043 km

• M1: 112,049 km (0.078 R)
• M2: 455,675 km (0.119 R)
• M3: 741,856 km (0.069 R)
• M4: 1,136,645 km (0.065 R)
• M5: 1,518,418 km (0.08 R)
• M6: 1,958,535 km (0.092 R)
• M7: 2,597,468 km (0.079 R)
• M8: 3,330,797 km (0.092 R)
• M9: 3,684,745 km (0.098 R)
• M10: 4,625,267 km (0.056 R)
• M11: 4,916,684 km (0.064 R)
• M12: 5,203,164 km (0.065 R)
• M13: 5,626,825 km (0.108 R)
• M14: 6,188,415 km (0.074 R)
• M15: 7,358,270 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 860.4

Radius: 9.8

Gravity: 8.96 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.2 AU - 1.64 AU

Year: 1093 Days

Day: 8.2 Hours

Environment

Temp: -177 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 46,955,043 km

• M1: 121,922 km (0.098 R)
• M2: 437,723 km (0.057 R)
• M3: 794,664 km (0.025 R)
• M4: 1,173,745 km (0.097 R)
• M5: 1,540,708 km (0.046 R)
• M6: 2,369,032 km (0.069 R)
• M7: 2,763,970 km (0.078 R)
• M8: 3,379,117 km (0.025 R)
• M9: 3,898,221 km (0.072 R)
• M10: 4,361,975 km (0.089 R)
• M11: 5,156,190 km (0.06 R)
• M12: 5,588,079 km (0.116 R)
• M13: 5,977,333 km (0.04 R)
• M14: 6,338,462 km (0.114 R)
• M15: 6,786,358 km (0.083 R)
• M16: 7,356,625 km (0.042 R)
• M17: 7,719,101 km (0.1 R)
• M18: 8,340,680 km (0.047 R)
• M19: 9,082,984 km (0.1 R)
• M20: 11,199,196 km (0.094 R)
• M21: 11,610,291 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 607.1

Radius: 10.9

Gravity: 5.11 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 1.92 AU - 2.28 AU

Year: 1965 Days

Day: 6.1 Hours

Environment

Temp: -199 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 46,955,043 km

• M1: 135,835 km (0.111 R)
• M2: 568,921 km (0.111 R)
• M3: 1,522,607 km (0.087 R)
• M4: 1,895,405 km (0.116 R)
• M5: 2,342,403 km (0.103 R)
• M6: 3,022,475 km (0.108 R)
• M7: 3,467,529 km (0.08 R)
• M8: 4,236,462 km (0.067 R)
• M9: 5,181,173 km (0.113 R)
• M10: 6,087,287 km (0.05 R)
• M11: 7,712,369 km (0.059 R)
• M12: 9,542,399 km (0.047 R)
• M13: 10,016,026 km (0.09 R)
• M14: 12,463,747 km (0.105 R)
• M15: 14,345,538 km (0.119 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 749.1

Radius: 8.7

Gravity: 9.9 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1.73 AU - 2.59 AU

Year: 2050 Days

Day: 9.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 10.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 46,955,043 km

• M1: 108,608 km (0.086 R)
• M2: 387,758 km (0.079 R)
• M3: 766,988 km (0.032 R)
• M4: 1,233,135 km (0.11 R)
• M5: 1,694,046 km (0.085 R)
• M6: 1,994,888 km (0.105 R)
• M7: 2,839,517 km (0.111 R)
• M8: 3,541,131 km (0.112 R)
• M9: 3,942,502 km (0.112 R)
• M10: 4,213,424 km (0.067 R)
• M11: 4,771,574 km (0.109 R)
• M12: 5,262,105 km (0.064 R)
• M13: 6,317,817 km (0.086 R)
• M14: 6,771,996 km (0.097 R)
• M15: 7,247,718 km (0.098 R)
• M16: 7,596,879 km (0.11 R)
• M17: 8,487,286 km (0.089 R)
• M18: 8,842,730 km (0.037 R)
• M19: 10,039,962 km (0.105 R)
• M20: 10,547,996 km (0.091 R)
• M21: 12,338,533 km (0.078 R)
• M22: 12,879,180 km (0.117 R)
• M23: 14,232,442 km (0.09 R)
• M24: 14,780,868 km (0.075 R)
• M25: 15,629,836 km (0.116 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407

Radius: 14.9

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 2.71 AU - 2.91 AU

Year: 3041 Days

Day: 14.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 46,955,043 km

• M1: 185,352 km (0.077 R)
• M2: 677,230 km (0.107 R)
• M3: 1,206,656 km (0.071 R)
• M4: 1,952,551 km (0.08 R)
• M5: 2,692,612 km (0.104 R)
• M6: 3,890,143 km (0.112 R)
• M7: 6,188,864 km (0.102 R)
• M8: 7,495,153 km (0.093 R)
• M9: 8,745,791 km (0.07 R)
• M10: 11,779,636 km (0.102 R)
• M11: 14,369,923 km (0.105 R)
• M12: 14,835,920 km (0.09 R)
• M13: 15,995,902 km (0.104 R)
• M14: 17,059,692 km (0.086 R)
• M15: 18,116,302 km (0.111 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 740.7

Radius: 13.9

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 4.52 AU - 7.34 AU

Year: 9324 Days

Day: 11.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 46,955,043 km

• M1: 173,085 km (0.108 R)
• M2: 1,023,848 km (0.117 R)
• M3: 1,691,503 km (0.099 R)
• M4: 2,884,397 km (0.092 R)
• M5: 4,846,223 km (0.088 R)
• M6: 7,256,544 km (0.051 R)
• M7: 7,998,849 km (0.064 R)
• M8: 12,494,115 km (0.055 R)
• M9: 14,560,510 km (0.114 R)
• M10: 17,129,854 km (0.097 R)
• M11: 20,067,358 km (0.095 R)
• M12: 21,447,398 km (0.08 R)
• M13: 22,889,671 km (0.079 R)
• M14: 27,703,282 km (0.117 R)
• M15: 30,450,946 km (0.096 R)
• M16: 42,869,663 km (0.096 R)
• M17: 44,338,864 km (0.09 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: 421 - 16,387 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit