🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290.4

Radius: 11.5

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.76 AU - 0.84 AU

Year: 455 Days

Day: 11.7 Hours

Environment

Temp: -138 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 45,165,561 km

• M1: 143,016 km (0.05 R)
• M2: 932,144 km (0.109 R)
• M3: 1,302,997 km (0.112 R)
• M4: 2,269,101 km (0.098 R)
• M5: 3,162,499 km (0.045 R)
• M6: 3,719,153 km (0.089 R)
• M7: 4,391,894 km (0.095 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309.5

Radius: 14.6

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.73 AU - 1.13 AU

Year: 570 Days

Day: 11.3 Hours

Environment

Temp: -162 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 45,165,561 km

• M1: 181,612 km (0.095 R)
• M2: 697,575 km (0.119 R)
• M3: 1,325,138 km (0.075 R)
• M4: 2,099,008 km (0.1 R)
• M5: 2,595,822 km (0.1 R)
• M6: 3,462,443 km (0.11 R)
• M7: 4,021,640 km (0.113 R)
• M8: 4,885,866 km (0.084 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 525.4

Radius: 11.3

Gravity: 4.11 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.95 AU - 1.31 AU

Year: 764 Days

Day: 5.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,165,561 km

• M1: 147,653 km (0.086 R)
• M2: 549,623 km (0.077 R)
• M3: 1,157,588 km (0.04 R)
• M4: 1,547,141 km (0.097 R)
• M5: 2,117,558 km (0.108 R)
• M6: 2,515,787 km (0.056 R)
• M7: 3,146,043 km (0.079 R)
• M8: 5,445,213 km (0.028 R)
• M9: 6,142,040 km (0.086 R)
• M10: 7,486,925 km (0.069 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811

Radius: 11

Gravity: 6.7 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.32 AU - 1.72 AU

Year: 1192 Days

Day: 5.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 45,165,561 km

• M1: 138,228 km (0.097 R)
• M2: 1,192,445 km (0.115 R)
• M3: 1,681,929 km (0.075 R)
• M4: 3,187,183 km (0.105 R)
• M5: 3,854,389 km (0.109 R)
• M6: 5,197,778 km (0.117 R)
• M7: 6,237,483 km (0.105 R)
• M8: 7,752,311 km (0.091 R)
• M9: 8,187,342 km (0.043 R)
• M10: 9,437,980 km (0.037 R)
• M11: 10,157,247 km (0.086 R)
• M12: 10,546,799 km (0.118 R)
• M13: 11,599,370 km (0.064 R)
• M14: 12,242,043 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 91.4

Radius: 11.1

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 2.06 AU - 3.28 AU

Year: 2774 Days

Day: 13.4 Hours

Environment

Temp: -192 °C

Axial Tilt: 44.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,165,561 km

• M1: 238,758 km (0.08 R)
• M2: 680,222 km (0.094 R)
• M3: 1,099,993 km (0.087 R)
• M4: 1,446,312 km (0.112 R)
• M5: 2,281,667 km (0.079 R)
• M6: 2,832,935 km (0.051 R)
• M7: 6,079,957 km (0.034 R)
• M8: 7,757,697 km (0.117 R)
• M9: 9,007,587 km (0.085 R)
• M10: 10,325,843 km (0.067 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 710.9

Radius: 11.6

Gravity: 5.28 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 2.41 AU - 3.73 AU

Year: 3420 Days

Day: 14.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 45,165,561 km

• M1: 144,362 km (0.025 R)
• M2: 535,411 km (0.065 R)
• M3: 910,004 km (0.116 R)
• M4: 1,319,902 km (0.1 R)
• M5: 2,208,962 km (0.083 R)
• M6: 2,736,743 km (0.104 R)
• M7: 3,596,931 km (0.05 R)
• M8: 4,723,104 km (0.12 R)
• M9: 5,578,056 km (0.041 R)
• M10: 6,212,949 km (0.064 R)
• M11: 8,374,938 km (0.072 R)
• M12: 10,871,726 km (0.044 R)
• M13: 12,041,881 km (0.09 R)
• M14: 12,588,062 km (0.076 R)
• M15: 13,877,596 km (0.116 R)
• M16: 14,631,121 km (0.098 R)
• M17: 15,096,220 km (0.104 R)
• M18: 15,571,194 km (0.099 R)
• M19: 16,056,040 km (0.104 R)
• M20: 16,999,404 km (0.064 R)
• M21: 18,693,451 km (0.088 R)
• M22: 19,241,278 km (0.098 R)
• M23: 20,690,283 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 576.3

Radius: 14.3

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 4.09 AU - 4.47 AU

Year: 5630 Days

Day: 6.1 Hours

Environment

Temp: -217 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 45,165,561 km

• M1: 177,872 km (0.094 R)
• M2: 742,305 km (0.086 R)
• M3: 1,608,925 km (0.111 R)
• M4: 3,612,789 km (0.062 R)
• M5: 4,490,928 km (0.061 R)
• M6: 5,253,428 km (0.106 R)
• M7: 6,477,737 km (0.075 R)
• M8: 7,106,198 km (0.106 R)
• M9: 10,037,120 km (0.112 R)
• M10: 12,912,540 km (0.065 R)
• M11: 14,181,729 km (0.103 R)
• M12: 15,129,880 km (0.091 R)
• M13: 17,844,034 km (0.118 R)
• M14: 18,423,576 km (0.097 R)
• M15: 19,015,685 km (0.078 R)
• M16: 19,688,426 km (0.079 R)
• M17: 20,307,462 km (0.076 R)
• M18: 21,081,482 km (0.093 R)
• M19: 22,464,963 km (0.118 R)
• M20: 23,293,136 km (0.086 R)
• M21: 23,753,300 km (0.075 R)
• M22: 27,401,393 km (0.113 R)
• M23: 28,696,163 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 227.6

Radius: 7.7

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 7.25 AU - 9.83 AU

Year: 15868 Days

Day: 22 Hours

Environment

Temp: -227 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 45,165,561 km

• M1: 95,743 km (0.088 R)
• M2: 816,954 km (0.102 R)
• M3: 1,300,454 km (0.034 R)
• M4: 2,397,306 km (0.098 R)
• M5: 3,156,814 km (0.106 R)
• M6: 3,531,258 km (0.063 R)
• M7: 4,148,199 km (0.057 R)
• M8: 5,174,142 km (0.085 R)
• M9: 6,216,091 km (0.063 R)
• M10: 6,729,959 km (0.051 R)
• M11: 7,271,803 km (0.117 R)
• M12: 9,733,735 km (0.088 R)
• M13: 11,046,456 km (0.064 R)
• M14: 11,527,114 km (0.111 R)
• M15: 16,226,731 km (0.038 R)
• M16: 16,639,173 km (0.085 R)
• M17: 18,507,650 km (0.096 R)
• M18: 20,993,967 km (0.117 R)
• M19: 22,912,859 km (0.093 R)
• M20: 25,680,270 km (0.106 R)
• M21: 35,191,104 km (0.051 R)
• M22: 37,769,423 km (0.092 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: 430 - 15,232 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit