🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.58 AU - 0.74 AU

Year: 346 Days

Day: 12 Hours

Environment

Temp: -142 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 946.2

Radius: 12

Gravity: 6.57 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.85 AU - 1.03 AU

Year: 588 Days

Day: 6.2 Hours

Environment

Temp: -151 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 60,792,666 km

• M1: 149,299 km (0.055 R)
• M2: 557,252 km (0.118 R)
• M3: 1,640,490 km (0.098 R)
• M4: 2,741,979 km (0.107 R)
• M5: 3,157,562 km (0.103 R)
• M6: 3,939,959 km (0.078 R)
• M7: 4,361,975 km (0.09 R)
• M8: 4,847,569 km (0.09 R)
• M9: 5,226,501 km (0.113 R)
• M10: 7,316,981 km (0.053 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 499.8

Radius: 13.9

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1 AU - 1.22 AU

Year: 755 Days

Day: 11.9 Hours

Environment

Temp: -171 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 60,792,666 km

• M1: 172,935 km (0.059 R)
• M2: 855,101 km (0.069 R)
• M3: 2,021,666 km (0.082 R)
• M4: 2,858,815 km (0.062 R)
• M5: 4,784,738 km (0.094 R)
• M6: 5,503,556 km (0.051 R)
• M7: 6,695,552 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 578.9

Radius: 11.7

Gravity: 4.23 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 2.87 AU - 3.63 AU

Year: 3783 Days

Day: 6.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 60,792,666 km

• M1: 146,157 km (0.119 R)
• M2: 598,990 km (0.052 R)
• M3: 1,272,330 km (0.112 R)
• M4: 2,514,291 km (0.111 R)
• M5: 2,985,674 km (0.051 R)
• M6: 4,485,543 km (0.105 R)
• M7: 5,058,203 km (0.066 R)
• M8: 5,652,256 km (0.117 R)
• M9: 6,408,623 km (0.095 R)
• M10: 7,231,112 km (0.06 R)
• M11: 8,365,513 km (0.113 R)
• M12: 8,975,573 km (0.082 R)
• M13: 11,239,737 km (0.088 R)
• M14: 12,852,103 km (0.073 R)
• M15: 13,665,017 km (0.086 R)
• M16: 16,809,864 km (0.036 R)
• M17: 18,016,221 km (0.085 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 280.5

Radius: 6.7

Gravity: 6.25 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 5.95 AU - 6.35 AU

Year: 9848 Days

Day: 18.9 Hours

Environment

Temp: -216 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,792,666 km

• M1: 83,326 km (0.105 R)
• M2: 422,913 km (0.09 R)
• M3: 775,216 km (0.087 R)
• M4: 1,416,542 km (0.109 R)
• M5: 2,383,842 km (0.079 R)
• M6: 3,016,641 km (0.091 R)
• M7: 3,372,385 km (0.07 R)
• M8: 4,476,866 km (0.104 R)
• M9: 5,054,014 km (0.049 R)
• M10: 6,190,061 km (0.116 R)
• M11: 7,228,868 km (0.105 R)
• M12: 7,828,157 km (0.082 R)
• M13: 8,339,184 km (0.068 R)
• M14: 9,960,376 km (0.096 R)
• M15: 11,831,845 km (0.096 R)
• M16: 12,823,380 km (0.067 R)
• M17: 19,963,537 km (0.091 R)
• M18: 20,399,315 km (0.077 R)
• M19: 21,821,542 km (0.103 R)
• M20: 24,281,679 km (0.063 R)
• M21: 29,651,196 km (0.092 R)
• M22: 34,084,528 km (0.117 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 158.7

Radius: 3.3

Gravity: 14.57 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 7.49 AU - 10.17 AU

Year: 16942 Days

Day: 22 Hours

Environment

Temp: -238 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 60,792,666 km

• M1: 41,139 km (0.086 R)
• M2: 1,018,761 km (0.042 R)
• M3: 1,136,046 km (0.069 R)
• M4: 1,817,764 km (0.11 R)
• M5: 2,696,053 km (0.045 R)
• M6: 4,109,304 km (0.093 R)
• M7: 6,263,513 km (0.117 R)
• M8: 6,844,252 km (0.042 R)
• M9: 11,413,719 km (0.074 R)
• M10: 18,606,834 km (0.109 R)
• M11: 31,745,865 km (0.076 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 381.4

Radius: 5.7

Gravity: 11.74 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 9.28 AU - 11.88 AU

Year: 22220 Days

Day: 25 Hours

Environment

Temp: -225 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 60,792,666 km

• M1: 76,594 km (0.105 R)
• M2: 258,954 km (0.111 R)
• M3: 468,690 km (0.069 R)
• M4: 1,607,280 km (0.1 R)
• M5: 4,526,682 km (0.076 R)
• M6: 6,685,379 km (0.087 R)
• M7: 6,902,446 km (0.074 R)
• M8: 7,723,140 km (0.06 R)
• M9: 13,707,204 km (0.111 R)
• M10: 14,704,723 km (0.117 R)
• M11: 15,826,108 km (0.109 R)
• M12: 17,572,215 km (0.117 R)
• M13: 18,491,643 km (0.056 R)
• M14: 20,064,814 km (0.109 R)
• M15: 25,950,743 km (0.034 R)
• M16: 32,517,940 km (0.051 R)
• M17: 54,898,828 km (0.066 R)
• M18: 56,497,431 km (0.116 R)
• M19: 57,217,745 km (0.078 R)
• M20: 57,944,192 km (0.069 R)
• M21: 61,478,891 km (0.058 R)
• M22: 63,589,567 km (0.091 R)
• M23: 64,368,972 km (0.072 R)
• M24: 66,345,160 km (0.07 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 234.8

Radius: 6.8

Gravity: 5.08 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 9.27 AU - 13.25 AU

Year: 24396 Days

Day: 16.9 Hours

Environment

Temp: -240 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 60,792,666 km

• M1: 84,972 km (0.068 R)
• M2: 352,303 km (0.12 R)
• M3: 5,506,698 km (0.1 R)
• M4: 7,139,708 km (0.104 R)
• M5: 7,902,956 km (0.098 R)
• M6: 11,625,699 km (0.112 R)
• M7: 14,000,117 km (0.092 R)
• M8: 16,756,457 km (0.11 R)
• M9: 37,235,508 km (0.116 R)
• M10: 39,786,003 km (0.064 R)
• M11: 42,450,640 km (0.116 R)
• M12: 46,438,321 km (0.087 R)
• M13: 56,179,536 km (0.094 R)
• M14: 57,573,040 km (0.096 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: 338 - 12,522 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit