🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.36

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.51 AU - 0.55 AU

Year: 249 Days

Day: 13.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 23.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.56

Radius: 1.19

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.52 AU - 0.82 AU

Year: 354 Days

Day: 25.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 24 °

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: 331.7

Radius: 12.8

Gravity: 2.02 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.57 AU - 0.85 AU

Year: 386 Days

Day: 12.6 Hours

Environment

Temp: -140 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 27,898,742 km

• M1: 159,621 km (0.083 R)
• M2: 611,556 km (0.1 R)
• M3: 1,071,869 km (0.073 R)
• M4: 1,750,744 km (0.034 R)
• M5: 3,458,703 km (0.105 R)
• M6: 4,093,447 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 623.1

Radius: 11.8

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.7 AU - 0.98 AU

Year: 497 Days

Day: 5.7 Hours

Environment

Temp: -147 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 27,898,742 km

• M1: 156,779 km (0.108 R)
• M2: 554,111 km (0.099 R)
• M3: 922,420 km (0.104 R)
• M4: 1,418,936 km (0.109 R)
• M5: 1,909,766 km (0.114 R)
• M6: 2,277,179 km (0.083 R)
• M7: 2,924,489 km (0.1 R)
• M8: 3,515,400 km (0.095 R)
• M9: 4,311,411 km (0.059 R)
• M10: 4,906,212 km (0.1 R)
• M11: 5,371,162 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.1

Radius: 10.3

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1.08 AU - 1.18 AU

Year: 776 Days

Day: 11.4 Hours

Environment

Temp: -157 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 27,898,742 km

• M1: 128,505 km (0.041 R)
• M2: 462,108 km (0.028 R)
• M3: 838,646 km (0.045 R)
• M4: 1,218,175 km (0.057 R)
• M5: 1,761,066 km (0.046 R)
• M6: 2,223,922 km (0.081 R)
• M7: 2,890,231 km (0.095 R)
• M8: 3,644,354 km (0.102 R)
• M9: 4,206,692 km (0.043 R)
• M10: 5,056,707 km (0.117 R)
• M11: 6,722,629 km (0.042 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 279.7

Radius: 14.9

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.11 AU - 1.19 AU

Year: 796 Days

Day: 9.1 Hours

Environment

Temp: -156 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 27,898,742 km

• M1: 185,352 km (0.081 R)
• M2: 693,835 km (0.1 R)
• M3: 1,159,383 km (0.086 R)
• M4: 1,769,593 km (0.079 R)
• M5: 2,714,753 km (0.1 R)
• M6: 3,546,966 km (0.068 R)
• M7: 4,694,680 km (0.087 R)
• M8: 5,498,171 km (0.1 R)
• M9: 6,279,670 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 547.4

Radius: 14

Gravity: 2.79 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.56 AU - 2.46 AU

Year: 1840 Days

Day: 7.4 Hours

Environment

Temp: -179 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 27,898,742 km

• M1: 174,282 km (0.11 R)
• M2: 685,009 km (0.064 R)
• M3: 1,418,337 km (0.108 R)
• M4: 2,552,140 km (0.071 R)
• M5: 3,745,631 km (0.101 R)
• M6: 4,683,461 km (0.103 R)
• M7: 5,391,956 km (0.107 R)
• M8: 6,340,706 km (0.119 R)
• M9: 7,024,368 km (0.079 R)
• M10: 7,617,374 km (0.071 R)
• M11: 9,470,592 km (0.069 R)
• M12: 10,161,735 km (0.115 R)
• M13: 11,028,205 km (0.104 R)
• M14: 11,719,348 km (0.097 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175.8

Radius: 13.8

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 2.1 AU - 3.34 AU

Year: 2896 Days

Day: 10.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 27,898,742 km

• M1: 172,187 km (0.065 R)
• M2: 811,718 km (0.077 R)
• M3: 1,262,606 km (0.097 R)
• M4: 1,701,377 km (0.119 R)
• M5: 2,210,009 km (0.096 R)
• M6: 4,060,086 km (0.079 R)
• M7: 5,680,530 km (0.093 R)
• M8: 13,334,855 km (0.084 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 459.9

Radius: 13.1

Gravity: 2.68 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 3.28 AU - 4.98 AU

Year: 5419 Days

Day: 14.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 27,898,742 km

• M1: 162,912 km (0.068 R)
• M2: 633,697 km (0.118 R)
• M3: 1,272,330 km (0.104 R)
• M4: 2,493,497 km (0.088 R)
• M5: 2,987,769 km (0.095 R)
• M6: 4,176,324 km (0.118 R)
• M7: 4,777,408 km (0.107 R)
• M8: 6,183,927 km (0.065 R)
• M9: 7,298,282 km (0.045 R)
• M10: 8,922,466 km (0.11 R)
• M11: 11,677,759 km (0.05 R)
• M12: 12,434,725 km (0.104 R)
• M13: 13,375,695 km (0.094 R)
• M14: 13,889,714 km (0.049 R)
• M15: 16,837,988 km (0.115 R)
• M16: 19,781,775 km (0.067 R)
• M17: 20,926,349 km (0.094 R)
• M18: 22,472,443 km (0.12 R)
• M19: 23,867,891 km (0.053 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 361 - 12,392 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit