🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 40.8

Radius: 14.8

Gravity: 0.19 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.65 AU - 0.77 AU

Year: 406 Days

Day: 14.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 34,287,286 km

• M1: 223,499 km (0.112 R)
• M2: 695,630 km (0.038 R)
• M3: 1,346,830 km (0.116 R)
• M4: 2,162,138 km (0.064 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 94.8

Radius: 12.5

Gravity: 0.61 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.64 AU - 0.94 AU

Year: 476 Days

Day: 7.7 Hours

Environment

Temp: -158 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 34,287,286 km

• M1: 155,582 km (0.118 R)
• M2: 633,098 km (0.07 R)
• M3: 1,743,713 km (0.078 R)
• M4: 2,650,725 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 473.8

Radius: 11

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.92 AU - 0.94 AU

Year: 608 Days

Day: 9 Hours

Environment

Temp: -178 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,287,286 km

• M1: 136,732 km (0.1 R)
• M2: 480,808 km (0.071 R)
• M3: 968,497 km (0.082 R)
• M4: 1,344,586 km (0.116 R)
• M5: 2,007,753 km (0.112 R)
• M6: 2,424,832 km (0.114 R)
• M7: 2,802,118 km (0.074 R)
• M8: 3,374,629 km (0.049 R)
• M9: 3,741,592 km (0.092 R)
• M10: 4,496,762 km (0.092 R)
• M11: 5,250,736 km (0.078 R)
• M12: 5,710,749 km (0.117 R)
• M13: 6,216,091 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75.2

Radius: 14.9

Gravity: 0.34 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.31 AU - 1.39 AU

Year: 1064 Days

Day: 7.8 Hours

Environment

Temp: -182 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 34,287,286 km

• M1: 185,352 km (0.027 R)
• M2: 694,583 km (0.07 R)
• M3: 1,512,135 km (0.082 R)
• M4: 3,225,480 km (0.081 R)
• M5: 4,621,826 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 881.4

Radius: 14.2

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.75 AU - 1.81 AU

Year: 1611 Days

Day: 11.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 34,287,286 km

• M1: 176,974 km (0.099 R)
• M2: 639,980 km (0.072 R)
• M3: 1,160,431 km (0.11 R)
• M4: 1,853,368 km (0.101 R)
• M5: 2,512,945 km (0.094 R)
• M6: 3,077,079 km (0.096 R)
• M7: 3,937,416 km (0.098 R)
• M8: 4,483,747 km (0.088 R)
• M9: 5,409,908 km (0.083 R)
• M10: 7,585,360 km (0.063 R)
• M11: 12,528,223 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.4

Radius: 12.9

Gravity: 5.52 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 3.12 AU - 3.58 AU

Year: 4159 Days

Day: 8.6 Hours

Environment

Temp: -224 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 34,287,286 km

• M1: 160,369 km (0.107 R)
• M2: 730,786 km (0.071 R)
• M3: 1,147,715 km (0.053 R)
• M4: 1,806,394 km (0.094 R)
• M5: 2,254,440 km (0.11 R)
• M6: 3,221,740 km (0.115 R)
• M7: 3,713,917 km (0.067 R)
• M8: 4,722,805 km (0.106 R)
• M9: 5,444,615 km (0.063 R)
• M10: 6,363,145 km (0.042 R)
• M11: 7,008,660 km (0.035 R)
• M12: 7,521,332 km (0.1 R)
• M13: 8,698,817 km (0.107 R)
• M14: 10,209,606 km (0.057 R)
• M15: 10,959,690 km (0.106 R)
• M16: 12,372,791 km (0.083 R)
• M17: 16,255,454 km (0.034 R)
• M18: 17,525,540 km (0.096 R)
• M19: 18,601,298 km (0.077 R)
• M20: 21,235,268 km (0.107 R)
• M21: 22,384,479 km (0.072 R)
• M22: 25,598,440 km (0.058 R)
• M23: 26,734,935 km (0.118 R)
• M24: 27,232,198 km (0.088 R)
• M25: 28,330,695 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 910.3

Radius: 4.7

Gravity: 41.21 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 4.5 AU - 7.08 AU

Year: 9450 Days

Day: 18.5 Hours

Environment

Temp: -221 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 34,287,286 km

• M1: 59,690 km (0.098 R)
• M2: 209,736 km (0.043 R)
• M3: 643,570 km (0.102 R)
• M4: 918,830 km (0.069 R)
• M5: 1,195,137 km (0.073 R)
• M6: 1,373,009 km (0.086 R)
• M7: 3,254,053 km (0.113 R)
• M8: 4,585,624 km (0.086 R)
• M9: 5,525,098 km (0.095 R)
• M10: 5,769,840 km (0.111 R)
• M11: 10,154,255 km (0.118 R)
• M12: 10,843,602 km (0.094 R)
• M13: 12,612,447 km (0.064 R)
• M14: 15,235,346 km (0.057 R)
• M15: 17,668,855 km (0.064 R)
• M16: 17,819,650 km (0.075 R)
• M17: 21,700,069 km (0.03 R)
• M18: 22,840,304 km (0.091 R)
• M19: 28,108,393 km (0.109 R)
• M20: 34,955,338 km (0.102 R)
• M21: 35,791,739 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 145.7

Radius: 5.4

Gravity: 5 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 5.17 AU - 8.37 AU

Year: 11947 Days

Day: 16.1 Hours

Environment

Temp: -229 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 34,287,286 km

• M1: 68,815 km (0.091 R)
• M2: 336,146 km (0.097 R)
• M3: 594,053 km (0.106 R)
• M4: 1,212,042 km (0.058 R)
• M5: 2,659,102 km (0.09 R)
• M6: 2,957,849 km (0.088 R)
• M7: 3,258,092 km (0.044 R)
• M8: 6,115,411 km (0.09 R)
• M9: 9,394,148 km (0.072 R)
• M10: 9,823,195 km (0.069 R)
• M11: 18,850,977 km (0.067 R)
• M12: 19,121,899 km (0.1 R)
• M13: 25,843,032 km (0.1 R)
• M14: 30,232,982 km (0.117 R)
• M15: 31,640,847 km (0.044 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 91.3

Radius: 3.2

Gravity: 8.92 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 7.87 AU - 8.97 AU

Year: 16571 Days

Day: 21.2 Hours

Environment

Temp: -243 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 34,287,286 km

• M1: 39,793 km (0.095 R)
• M2: 263,741 km (0.058 R)
• M3: 799,750 km (0.109 R)
• M4: 1,637,648 km (0.09 R)
• M5: 2,182,633 km (0.054 R)
• M6: 3,057,780 km (0.085 R)
• M7: 3,850,948 km (0.064 R)
• M8: 4,398,327 km (0.078 R)
• M9: 5,583,741 km (0.072 R)
• M10: 6,054,226 km (0.061 R)
• M11: 6,415,654 km (0.066 R)
• M12: 6,516,633 km (0.108 R)
• M13: 7,699,204 km (0.114 R)
• M14: 8,241,496 km (0.12 R)
• M15: 9,059,647 km (0.114 R)
• M16: 12,822,632 km (0.113 R)
• M17: 13,527,537 km (0.106 R)
• M18: 15,432,516 km (0.051 R)
• M19: 15,981,541 km (0.066 R)
• M20: 16,989,381 km (0.085 R)
• M21: 18,307,787 km (0.085 R)
• M22: 18,991,898 km (0.106 R)
• M23: 20,923,955 km (0.078 R)
• M24: 22,436,689 km (0.086 R)
• M25: 26,794,923 km (0.115 R)
• M26: 27,943,985 km (0.055 R)
• M27: 30,911,408 km (0.114 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 437 - 20,017 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit