🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.52 AU - 0.66 AU

Year: 297 Days

Day: 21.1 Hours

Environment

Temp: -123 °C

Axial Tilt: 13.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.61

Radius: 1.47

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.5 AU - 0.74 AU

Year: 320 Days

Day: 38.6 Hours

Environment

Temp: -130 °C

Axial Tilt: 19.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 748.3

Radius: 13.1

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.59 AU - 0.79 AU

Year: 376 Days

Day: 6.2 Hours

Environment

Temp: -130 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 47,058,197 km

• M1: 163,211 km (0.109 R)
• M2: 581,637 km (0.118 R)
• M3: 1,169,257 km (0.105 R)
• M4: 1,906,625 km (0.102 R)
• M5: 2,359,757 km (0.04 R)
• M6: 3,350,244 km (0.094 R)
• M7: 5,055,810 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660.3

Radius: 8.6

Gravity: 8.93 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.75 AU - 1.05 AU

Year: 560 Days

Day: 9.8 Hours

Environment

Temp: -147 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 47,058,197 km

• M1: 106,962 km (0.093 R)
• M2: 422,764 km (0.102 R)
• M3: 788,680 km (0.056 R)
• M4: 1,384,229 km (0.035 R)
• M5: 1,773,184 km (0.106 R)
• M6: 2,068,939 km (0.103 R)
• M7: 2,539,274 km (0.108 R)
• M8: 2,883,649 km (0.111 R)
• M9: 3,333,190 km (0.118 R)
• M10: 3,653,778 km (0.101 R)
• M11: 4,195,472 km (0.091 R)
• M12: 4,773,668 km (0.065 R)
• M13: 5,065,533 km (0.116 R)
• M14: 6,069,784 km (0.028 R)
• M15: 6,549,993 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 311.1

Radius: 12.8

Gravity: 1.9 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.29 AU - 1.33 AU

Year: 984 Days

Day: 14.7 Hours

Environment

Temp: -168 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,058,197 km

• M1: 159,172 km (0.059 R)
• M2: 693,237 km (0.12 R)
• M3: 1,228,199 km (0.063 R)
• M4: 1,746,854 km (0.113 R)
• M5: 2,147,328 km (0.059 R)
• M6: 2,620,655 km (0.111 R)
• M7: 3,238,196 km (0.097 R)
• M8: 3,670,683 km (0.104 R)
• M9: 4,307,671 km (0.103 R)
• M10: 5,544,995 km (0.048 R)
• M11: 7,758,894 km (0.061 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278.4

Radius: 8.6

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 1.87 AU - 2.51 AU

Year: 2126 Days

Day: 13.8 Hours

Environment

Temp: -183 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 47,058,197 km

• M1: 106,962 km (0.115 R)
• M2: 406,457 km (0.08 R)
• M3: 856,597 km (0.044 R)
• M4: 1,153,549 km (0.105 R)
• M5: 1,582,297 km (0.107 R)
• M6: 1,890,767 km (0.108 R)
• M7: 2,159,445 km (0.09 R)
• M8: 2,735,247 km (0.082 R)
• M9: 3,212,913 km (0.112 R)
• M10: 4,371,699 km (0.075 R)
• M11: 5,025,740 km (0.03 R)
• M12: 5,547,089 km (0.079 R)
• M13: 5,989,749 km (0.088 R)
• M14: 6,697,796 km (0.081 R)
• M15: 7,619,768 km (0.044 R)
• M16: 8,055,696 km (0.091 R)
• M17: 8,565,974 km (0.099 R)
• M18: 9,097,645 km (0.092 R)
• M19: 10,456,742 km (0.065 R)
• M20: 11,376,469 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 977.2

Radius: 12.7

Gravity: 6.06 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 2.06 AU - 2.4 AU

Year: 2185 Days

Day: 12.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 47,058,197 km

• M1: 157,975 km (0.108 R)
• M2: 588,668 km (0.027 R)
• M3: 1,149,360 km (0.056 R)
• M4: 1,880,296 km (0.117 R)
• M5: 2,643,394 km (0.117 R)
• M6: 3,659,613 km (0.106 R)
• M7: 4,268,177 km (0.11 R)
• M8: 5,105,476 km (0.119 R)
• M9: 5,588,677 km (0.101 R)
• M10: 6,343,548 km (0.068 R)
• M11: 7,710,424 km (0.074 R)
• M12: 8,646,757 km (0.08 R)
• M13: 9,477,773 km (0.102 R)
• M14: 10,098,155 km (0.099 R)
• M15: 12,207,485 km (0.088 R)
• M16: 12,766,832 km (0.09 R)
• M17: 13,936,986 km (0.088 R)
• M18: 14,643,836 km (0.098 R)
• M19: 17,496,069 km (0.102 R)
• M20: 18,542,656 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 599.5

Radius: 6.9

Gravity: 12.59 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 6.14 AU - 6.48 AU

Year: 10398 Days

Day: 21.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 47,058,197 km

• M1: 87,814 km (0.063 R)
• M2: 407,953 km (0.068 R)
• M3: 751,580 km (0.094 R)
• M4: 1,526,197 km (0.103 R)
• M5: 1,820,307 km (0.1 R)
• M6: 2,980,738 km (0.092 R)
• M7: 3,229,369 km (0.039 R)
• M8: 3,541,131 km (0.101 R)
• M9: 4,225,093 km (0.1 R)
• M10: 7,815,890 km (0.068 R)
• M11: 9,880,790 km (0.116 R)
• M12: 10,384,785 km (0.041 R)
• M13: 12,807,822 km (0.082 R)
• M14: 14,467,909 km (0.09 R)
• M15: 16,405,351 km (0.036 R)
• M16: 16,826,768 km (0.115 R)
• M17: 17,911,951 km (0.115 R)
• M18: 18,283,852 km (0.102 R)
• M19: 18,966,168 km (0.093 R)
• M20: 19,823,064 km (0.113 R)
• M21: 20,141,109 km (0.116 R)
• M22: 21,530,275 km (0.072 R)
• M23: 21,950,795 km (0.053 R)
• M24: 22,808,140 km (0.051 R)
• M25: 23,598,615 km (0.109 R)
• M26: 26,846,983 km (0.084 R)
• M27: 29,136,878 km (0.112 R)
• M28: 34,328,672 km (0.105 R)
• M29: 35,599,656 km (0.093 R)
• M30: 37,262,286 km (0.065 R)
• M31: 37,990,379 km (0.084 R)
• M32: 38,727,897 km (0.099 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 474 - 20,472 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit