🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.51

Radius: 1.45

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.43 AU - 0.65 AU

Year: 252 Days

Day: 23.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 26.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.4

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.63 AU - 0.67 AU

Year: 333 Days

Day: 16.2 Hours

Environment

Temp: -138 °C

Axial Tilt: 32.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.8

Radius: 8.4

Gravity: 10.82 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.63 AU - 0.79 AU

Year: 380 Days

Day: 5.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 28,620,167 km

• M1: 104,419 km (0.102 R)
• M2: 407,205 km (0.1 R)
• M3: 884,722 km (0.079 R)
• M4: 1,220,419 km (0.071 R)
• M5: 1,557,613 km (0.084 R)
• M6: 1,854,714 km (0.1 R)
• M7: 2,121,148 km (0.026 R)
• M8: 2,413,462 km (0.084 R)
• M9: 2,783,568 km (0.08 R)
• M10: 3,613,836 km (0.103 R)
• M11: 3,903,008 km (0.102 R)
• M12: 5,016,465 km (0.092 R)
• M13: 5,297,410 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 742.2

Radius: 9.1

Gravity: 8.96 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 1.06 AU - 1.22 AU

Year: 774 Days

Day: 6.3 Hours

Environment

Temp: -156 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 28,620,167 km

• M1: 113,844 km (0.06 R)
• M2: 457,021 km (0.097 R)
• M3: 805,285 km (0.109 R)
• M4: 1,089,372 km (0.116 R)
• M5: 1,390,512 km (0.118 R)
• M6: 2,331,034 km (0.066 R)
• M7: 2,627,986 km (0.076 R)
• M8: 3,206,331 km (0.051 R)
• M9: 3,632,535 km (0.11 R)
• M10: 4,752,575 km (0.097 R)
• M11: 5,142,427 km (0.074 R)
• M12: 5,747,550 km (0.105 R)
• M13: 6,231,948 km (0.064 R)
• M14: 7,328,800 km (0.104 R)
• M15: 7,947,686 km (0.102 R)
• M16: 8,370,749 km (0.118 R)
• M17: 8,678,472 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 767.7

Radius: 13.8

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 1.25 AU - 1.37 AU

Year: 953 Days

Day: 7.8 Hours

Environment

Temp: -178 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 28,620,167 km

• M1: 172,935 km (0.05 R)
• M2: 628,760 km (0.098 R)
• M3: 1,287,589 km (0.091 R)
• M4: 1,966,165 km (0.098 R)
• M5: 2,548,549 km (0.102 R)
• M6: 3,122,856 km (0.088 R)
• M7: 3,557,886 km (0.093 R)
• M8: 4,196,071 km (0.117 R)
• M9: 4,965,153 km (0.054 R)
• M10: 5,423,222 km (0.032 R)
• M11: 5,993,489 km (0.113 R)
• M12: 7,206,877 km (0.107 R)
• M13: 8,417,573 km (0.098 R)
• M14: 9,701,272 km (0.104 R)
• M15: 10,390,320 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 336.9

Radius: 14.1

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.8 AU - 2.34 AU

Year: 1894 Days

Day: 5.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 28,620,167 km

• M1: 180,714 km (0.111 R)
• M2: 730,337 km (0.076 R)
• M3: 1,311,375 km (0.105 R)
• M4: 1,955,394 km (0.075 R)
• M5: 2,550,793 km (0.115 R)
• M6: 3,265,871 km (0.096 R)
• M7: 3,809,211 km (0.115 R)
• M8: 5,945,767 km (0.116 R)
• M9: 6,957,797 km (0.116 R)
• M10: 8,701,959 km (0.039 R)
• M11: 9,722,964 km (0.09 R)
• M12: 10,788,849 km (0.101 R)
• M13: 11,541,775 km (0.117 R)
• M14: 12,111,294 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 270.6

Radius: 14.4

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 2.07 AU - 2.29 AU

Year: 2047 Days

Day: 13.9 Hours

Environment

Temp: -195 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 28,620,167 km

• M1: 179,069 km (0.096 R)
• M2: 1,045,540 km (0.07 R)
• M3: 1,638,695 km (0.118 R)
• M4: 3,131,383 km (0.097 R)
• M5: 3,913,331 km (0.101 R)
• M6: 4,633,794 km (0.071 R)
• M7: 5,236,075 km (0.091 R)
• M8: 6,410,568 km (0.116 R)
• M9: 7,807,363 km (0.119 R)
• M10: 8,296,997 km (0.082 R)
• M11: 12,034,401 km (0.073 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 585.6

Radius: 12.9

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 3.42 AU - 4.18 AU

Year: 4710 Days

Day: 12.5 Hours

Environment

Temp: -206 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 28,620,167 km

• M1: 160,369 km (0.059 R)
• M2: 630,555 km (0.065 R)
• M3: 1,294,470 km (0.078 R)
• M4: 1,747,303 km (0.11 R)
• M5: 2,262,069 km (0.12 R)
• M6: 3,039,380 km (0.078 R)
• M7: 3,440,901 km (0.114 R)
• M8: 4,099,580 km (0.103 R)
• M9: 4,765,291 km (0.045 R)
• M10: 5,669,759 km (0.081 R)
• M11: 8,618,034 km (0.067 R)
• M12: 10,252,092 km (0.07 R)
• M13: 11,209,817 km (0.097 R)
• M14: 11,664,445 km (0.086 R)
• M15: 12,131,490 km (0.104 R)
• M16: 13,556,709 km (0.048 R)
• M17: 14,656,552 km (0.097 R)
• M18: 16,387,549 km (0.077 R)
• M19: 17,941,572 km (0.116 R)
• M20: 18,945,374 km (0.086 R)
• M21: 23,338,614 km (0.042 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 438.2

Radius: 10.4

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 4.35 AU - 4.35 AU

Year: 5769 Days

Day: 8.1 Hours

Environment

Temp: -216 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 28,620,167 km

• M1: 131,646 km (0.097 R)
• M2: 635,941 km (0.094 R)
• M3: 969,993 km (0.082 R)
• M4: 1,492,089 km (0.111 R)
• M5: 1,885,232 km (0.105 R)
• M6: 2,920,599 km (0.109 R)
• M7: 3,440,452 km (0.096 R)
• M8: 4,419,121 km (0.116 R)
• M9: 6,130,820 km (0.094 R)
• M10: 7,810,056 km (0.084 R)
• M11: 8,969,739 km (0.103 R)
• M12: 9,985,658 km (0.097 R)
• M13: 17,564,585 km (0.049 R)
• M14: 18,890,621 km (0.088 R)
• M15: 20,418,314 km (0.118 R)
• M16: 25,891,651 km (0.104 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 162 - 16,955 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit