🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.19

Radius: 0.51

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.57 AU - 0.59 AU

Year: 285 Days

Day: 18.3 Hours

Environment

Temp: -117 °C

Axial Tilt: 7.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 858.2

Radius: 8.3

Gravity: 12.46 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.55 AU - 0.87 AU

Year: 386 Days

Day: 7.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 72.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 24,323,025 km

• M1: 103,223 km (0.099 R)
• M2: 373,845 km (0.077 R)
• M3: 664,215 km (0.116 R)
• M4: 1,089,671 km (0.119 R)
• M5: 1,387,969 km (0.048 R)
• M6: 1,748,500 km (0.077 R)
• M7: 2,093,173 km (0.095 R)
• M8: 2,397,455 km (0.105 R)
• M9: 2,741,531 km (0.107 R)
• M10: 3,118,368 km (0.082 R)
• M11: 3,468,576 km (0.037 R)
• M12: 4,124,563 km (0.107 R)
• M13: 4,576,797 km (0.116 R)
• M14: 5,014,670 km (0.079 R)
• M15: 5,300,402 km (0.1 R)
• M16: 5,647,619 km (0.071 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.9

Radius: 12.8

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.64 AU - 0.9 AU

Year: 436 Days

Day: 5.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 24,323,025 km

• M1: 159,172 km (0.106 R)
• M2: 575,952 km (0.087 R)
• M3: 978,220 km (0.118 R)
• M4: 1,377,348 km (0.05 R)
• M5: 1,830,180 km (0.076 R)
• M6: 2,375,465 km (0.036 R)
• M7: 2,892,026 km (0.081 R)
• M8: 3,303,719 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 351.9

Radius: 11.8

Gravity: 2.53 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.91 AU - 0.93 AU

Year: 570 Days

Day: 11.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 167.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 24,323,025 km

• M1: 163,660 km (0.082 R)
• M2: 602,580 km (0.092 R)
• M3: 1,140,235 km (0.108 R)
• M4: 1,518,269 km (0.097 R)
• M5: 2,021,815 km (0.117 R)
• M6: 2,520,425 km (0.111 R)
• M7: 3,003,327 km (0.114 R)
• M8: 3,607,852 km (0.056 R)
• M9: 3,985,138 km (0.083 R)
• M10: 4,629,755 km (0.105 R)
• M11: 5,185,062 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 356.2

Radius: 9.3

Gravity: 4.12 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 0.86 AU - 1.3 AU

Year: 725 Days

Day: 7.4 Hours

Environment

Temp: -163 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 24,323,025 km

• M1: 115,639 km (0.105 R)
• M2: 457,321 km (0.051 R)
• M3: 876,195 km (0.077 R)
• M4: 1,427,014 km (0.109 R)
• M5: 1,874,312 km (0.113 R)
• M6: 2,204,325 km (0.07 R)
• M7: 2,604,050 km (0.074 R)
• M8: 3,990,374 km (0.092 R)
• M9: 4,633,345 km (0.116 R)
• M10: 5,176,086 km (0.051 R)
• M11: 5,689,805 km (0.077 R)
• M12: 6,237,184 km (0.046 R)
• M13: 6,582,157 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 505.9

Radius: 12.6

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.69 AU - 2.59 AU

Year: 2021 Days

Day: 8.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 24,323,025 km

• M1: 156,779 km (0.081 R)
• M2: 555,307 km (0.12 R)
• M3: 973,284 km (0.1 R)
• M4: 1,565,991 km (0.103 R)
• M5: 2,481,829 km (0.076 R)
• M6: 4,479,559 km (0.109 R)
• M7: 6,767,359 km (0.071 R)
• M8: 7,888,296 km (0.071 R)
• M9: 8,508,528 km (0.048 R)
• M10: 9,256,967 km (0.09 R)
• M11: 12,265,230 km (0.071 R)
• M12: 13,058,099 km (0.084 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 320.8

Radius: 9.8

Gravity: 3.34 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 4.03 AU - 4.09 AU

Year: 5282 Days

Day: 11 Hours

Environment

Temp: -219 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 24,323,025 km

• M1: 122,969 km (0.086 R)
• M2: 469,139 km (0.087 R)
• M3: 775,366 km (0.09 R)
• M4: 1,347,727 km (0.035 R)
• M5: 1,705,865 km (0.053 R)
• M6: 2,371,575 km (0.111 R)
• M7: 3,294,594 km (0.119 R)
• M8: 4,126,358 km (0.077 R)
• M9: 5,669,311 km (0.115 R)
• M10: 8,894,042 km (0.072 R)
• M11: 10,620,252 km (0.108 R)
• M12: 11,828,853 km (0.109 R)
• M13: 12,559,340 km (0.025 R)
• M14: 16,279,240 km (0.097 R)
• M15: 19,588,196 km (0.069 R)
• M16: 20,416,070 km (0.094 R)
• M17: 21,002,643 km (0.118 R)
• M18: 23,533,091 km (0.11 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 221 - 12,652 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit