🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.48 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.96 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.74

Radius: 1.25

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.82 AU - 1.1 AU

Year: 344 Days

Day: 15.9 Hours

Environment

Temp: 24 °C

Axial Tilt: 15 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 32,488,624 km

• M1: 256,261 km (0.106 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.59

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.37 AU - 1.43 AU

Year: 605 Days

Day: 13.5 Hours

Environment

Temp: -31 °C

Axial Tilt: 24.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.15

Radius: 0.47

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.27 AU - 2.09 AU

Year: 795 Days

Day: 20.1 Hours

Environment

Temp: -48 °C

Axial Tilt: 31.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.09 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 2.32 AU - 3.86 AU

Year: 1984 Days

Day: 20.4 Hours

Environment

Temp: -109 °C

Axial Tilt: 44.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.92 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.5

Radius: 1.83

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 2.96 AU - 4.88 AU

Year: 2835 Days

Day: 30.8 Hours

Environment

Temp: -117 °C

Axial Tilt: 21 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 5.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 908.6

Radius: 10.8

Gravity: 7.79 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 4.88 AU - 6 AU

Year: 4634 Days

Day: 13.1 Hours

Environment

Temp: -143 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 32,488,624 km

• M1: 135,984 km (0.111 R)
• M2: 648,956 km (0.045 R)
• M3: 1,007,990 km (0.045 R)
• M4: 1,738,028 km (0.111 R)
• M5: 2,362,749 km (0.088 R)
• M6: 2,737,192 km (0.119 R)
• M7: 3,151,429 km (0.045 R)
• M8: 3,564,169 km (0.084 R)
• M9: 4,154,931 km (0.045 R)
• M10: 4,889,606 km (0.061 R)
• M11: 5,620,093 km (0.099 R)
• M12: 6,951,813 km (0.094 R)
• M13: 7,439,353 km (0.081 R)
• M14: 8,600,681 km (0.116 R)
• M15: 8,959,566 km (0.092 R)
• M16: 9,750,041 km (0.106 R)
• M17: 11,279,829 km (0.067 R)
• M18: 13,489,539 km (0.089 R)
• M19: 14,084,340 km (0.118 R)
• M20: 15,268,108 km (0.115 R)
• M21: 16,700,957 km (0.115 R)
• M22: 20,886,107 km (0.053 R)
• M23: 22,498,622 km (0.101 R)
• M24: 23,258,280 km (0.091 R)
• M25: 26,975,338 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 344.5

Radius: 11.8

Gravity: 2.47 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 4.7 AU - 6.5 AU

Year: 4840 Days

Day: 13.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 32,488,624 km

• M1: 146,756 km (0.092 R)
• M2: 1,939,387 km (0.105 R)
• M3: 2,761,726 km (0.034 R)
• M4: 3,844,366 km (0.115 R)
• M5: 4,586,222 km (0.104 R)
• M6: 5,292,324 km (0.118 R)
• M7: 5,793,477 km (0.104 R)
• M8: 7,751,563 km (0.106 R)
• M9: 11,399,956 km (0.06 R)
• M10: 12,649,248 km (0.095 R)
• M11: 17,227,242 km (0.118 R)
• M12: 19,728,967 km (0.092 R)
• M13: 21,131,746 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221.9

Radius: 11.9

Gravity: 1.57 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 6.2 AU - 8.58 AU

Year: 7338 Days

Day: 13 Hours

Environment

Temp: -151 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 32,488,624 km

• M1: 148,401 km (0.074 R)
• M2: 530,175 km (0.109 R)
• M3: 1,105,079 km (0.118 R)
• M4: 1,620,893 km (0.048 R)
• M5: 2,178,145 km (0.107 R)
• M6: 3,618,922 km (0.096 R)
• M7: 4,272,216 km (0.078 R)
• M8: 4,725,647 km (0.083 R)
• M9: 5,507,296 km (0.096 R)
• M10: 6,343,099 km (0.088 R)
• M11: 7,162,447 km (0.092 R)
• M12: 7,563,818 km (0.055 R)
• M13: 12,259,546 km (0.114 R)
• M14: 14,041,406 km (0.049 R)
• M15: 15,048,499 km (0.072 R)
• M16: 15,877,121 km (0.067 R)
• M17: 17,265,988 km (0.089 R)
• M18: 18,112,712 km (0.045 R)
• M19: 19,823,513 km (0.09 R)
• M20: 21,295,257 km (0.073 R)
• M21: 24,757,251 km (0.1 R)
• M22: 25,445,700 km (0.113 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.6

Radius: 13.4

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 8.03 AU - 10.67 AU

Year: 10443 Days

Day: 9.3 Hours

Environment

Temp: -173 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 32,488,624 km

• M1: 301,589 km (0.112 R)
• M2: 1,111,063 km (0.105 R)
• M3: 1,725,462 km (0.108 R)
• M4: 2,718,642 km (0.103 R)
• M5: 3,946,093 km (0.05 R)
• M6: 4,817,051 km (0.094 R)
• M7: 5,934,548 km (0.116 R)
• M8: 8,019,942 km (0.084 R)
• M9: 8,442,556 km (0.11 R)
• M10: 13,370,758 km (0.101 R)
• M11: 13,966,756 km (0.041 R)
• M12: 18,514,681 km (0.085 R)
• M13: 29,122,068 km (0.089 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 209 - 17,392 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit