🌌 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: 1.41

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.53 AU - 0.65 AU

Year: 297 Days

Day: 44.5 Hours

Environment

Temp: -121 °C

Axial Tilt: 47.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 28,724,253 km

• M1: 27,376 km (0.08 R)
• M2: 241,301 km (0.067 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.6

Radius: 1.47

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.6 AU - 0.64 AU

Year: 320 Days

Day: 44.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 36.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 645.8

Radius: 13.2

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.53 AU - 0.87 AU

Year: 384 Days

Day: 14.4 Hours

Environment

Temp: -145 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 28,724,253 km

• M1: 164,109 km (0.091 R)
• M2: 582,385 km (0.111 R)
• M3: 1,003,802 km (0.087 R)
• M4: 1,935,796 km (0.097 R)
• M5: 2,387,732 km (0.089 R)
• M6: 3,130,186 km (0.074 R)
• M7: 3,958,360 km (0.082 R)
• M8: 4,541,791 km (0.041 R)
• M9: 5,212,738 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 478

Radius: 12.5

Gravity: 3.06 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.72 AU - 0.94 AU

Year: 496 Days

Day: 6.3 Hours

Environment

Temp: -149 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 28,724,253 km

• M1: 155,432 km (0.042 R)
• M2: 572,212 km (0.114 R)
• M3: 986,897 km (0.035 R)
• M4: 1,571,825 km (0.11 R)
• M5: 2,046,349 km (0.084 R)
• M6: 2,616,467 km (0.116 R)
• M7: 3,348,449 km (0.093 R)
• M8: 3,769,717 km (0.116 R)
• M9: 4,308,419 km (0.103 R)
• M10: 4,749,433 km (0.093 R)
• M11: 5,427,560 km (0.111 R)

Asteroid Belt

Center: 1.33 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 317.9

Radius: 8.6

Gravity: 4.3 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 1.7 AU - 1.96 AU

Year: 1624 Days

Day: 9.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 28,724,253 km

• M1: 107,262 km (0.063 R)
• M2: 518,207 km (0.103 R)
• M3: 1,123,929 km (0.043 R)
• M4: 1,566,589 km (0.109 R)
• M5: 1,926,970 km (0.035 R)
• M6: 2,330,884 km (0.089 R)
• M7: 2,816,330 km (0.082 R)
• M8: 3,501,338 km (0.042 R)
• M9: 3,891,489 km (0.115 R)
• M10: 4,575,900 km (0.096 R)
• M11: 5,159,780 km (0.112 R)
• M12: 6,339,509 km (0.066 R)
• M13: 6,707,370 km (0.109 R)
• M14: 7,486,027 km (0.066 R)
• M15: 9,397,589 km (0.104 R)
• M16: 9,665,070 km (0.116 R)
• M17: 10,883,245 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 679.5

Radius: 10.9

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 2.39 AU - 3.23 AU

Year: 3090 Days

Day: 8.7 Hours

Environment

Temp: -194 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 28,724,253 km

• M1: 135,536 km (0.098 R)
• M2: 474,824 km (0.035 R)
• M3: 908,807 km (0.086 R)
• M4: 1,744,311 km (0.081 R)
• M5: 2,801,220 km (0.037 R)
• M6: 3,171,176 km (0.113 R)
• M7: 6,406,678 km (0.115 R)
• M8: 6,963,182 km (0.081 R)
• M9: 7,331,044 km (0.039 R)
• M10: 7,776,696 km (0.069 R)
• M11: 10,841,507 km (0.047 R)
• M12: 14,782,364 km (0.078 R)
• M13: 16,552,705 km (0.103 R)
• M14: 18,171,055 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 961.9

Radius: 12.1

Gravity: 6.57 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 3.27 AU - 3.31 AU

Year: 3915 Days

Day: 8.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 28,724,253 km

• M1: 150,944 km (0.065 R)
• M2: 560,543 km (0.096 R)
• M3: 945,309 km (0.073 R)
• M4: 1,386,174 km (0.109 R)
• M5: 2,359,458 km (0.088 R)
• M6: 2,986,572 km (0.09 R)
• M7: 4,122,020 km (0.118 R)
• M8: 4,750,480 km (0.075 R)
• M9: 5,141,679 km (0.078 R)
• M10: 7,261,331 km (0.056 R)
• M11: 7,676,016 km (0.093 R)
• M12: 8,328,113 km (0.108 R)
• M13: 8,705,998 km (0.091 R)
• M14: 10,035,474 km (0.092 R)
• M15: 10,949,517 km (0.077 R)
• M16: 12,398,971 km (0.072 R)
• M17: 12,892,793 km (0.087 R)
• M18: 13,762,406 km (0.083 R)
• M19: 14,345,688 km (0.092 R)
• M20: 14,780,270 km (0.117 R)
• M21: 16,785,629 km (0.104 R)
• M22: 17,822,492 km (0.054 R)
• M23: 20,158,612 km (0.095 R)
• M24: 21,470,586 km (0.114 R)
• M25: 26,390,560 km (0.106 R)
• M26: 26,961,575 km (0.117 R)
• M27: 27,540,818 km (0.088 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 281 - 13,747 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit