🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.07

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.58 AU - 0.58 AU

Year: 285 Days

Day: 19.2 Hours

Environment

Temp: -116 °C

Axial Tilt: 23.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203.2

Radius: 13.6

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.96 AU - 1.06 AU

Year: 655 Days

Day: 14.4 Hours

Environment

Temp: -158 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 36,238,977 km

• M1: 179,667 km (0.089 R)
• M2: 756,965 km (0.051 R)
• M3: 1,426,266 km (0.079 R)
• M4: 1,930,710 km (0.113 R)
• M5: 2,384,740 km (0.104 R)
• M6: 3,479,646 km (0.12 R)
• M7: 3,982,595 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 561.1

Radius: 11.5

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 1.7 AU - 2.16 AU

Year: 1731 Days

Day: 7.4 Hours

Environment

Temp: -180 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,238,977 km

• M1: 143,016 km (0.066 R)
• M2: 511,625 km (0.063 R)
• M3: 917,633 km (0.063 R)
• M4: 1,382,733 km (0.045 R)
• M5: 1,795,174 km (0.077 R)
• M6: 2,161,091 km (0.086 R)
• M7: 2,833,234 km (0.092 R)
• M8: 3,241,935 km (0.062 R)
• M9: 3,842,870 km (0.057 R)
• M10: 4,536,107 km (0.083 R)
• M11: 5,506,847 km (0.061 R)
• M12: 5,959,830 km (0.035 R)
• M13: 6,536,380 km (0.08 R)
• M14: 7,773,105 km (0.091 R)
• M15: 8,760,900 km (0.083 R)
• M16: 10,194,496 km (0.092 R)
• M17: 10,949,816 km (0.087 R)
• M18: 11,341,164 km (0.096 R)
• M19: 12,494,863 km (0.11 R)
• M20: 13,725,305 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 242.1

Radius: 9.9

Gravity: 2.47 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 2.09 AU - 2.97 AU

Year: 2598 Days

Day: 10.3 Hours

Environment

Temp: -188 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,238,977 km

• M1: 123,269 km (0.103 R)
• M2: 755,918 km (0.092 R)
• M3: 1,100,592 km (0.048 R)
• M4: 1,616,854 km (0.095 R)
• M5: 2,264,762 km (0.083 R)
• M6: 2,709,666 km (0.064 R)
• M7: 3,624,906 km (0.09 R)
• M8: 4,404,461 km (0.104 R)
• M9: 4,874,647 km (0.117 R)
• M10: 6,294,181 km (0.04 R)
• M11: 6,995,047 km (0.091 R)
• M12: 10,193,300 km (0.088 R)
• M13: 10,912,267 km (0.095 R)
• M14: 13,273,071 km (0.027 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.3

Radius: 14

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 2.6 AU - 2.76 AU

Year: 2833 Days

Day: 11.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 36,238,977 km

• M1: 174,132 km (0.079 R)
• M2: 758,760 km (0.093 R)
• M3: 1,289,982 km (0.106 R)
• M4: 1,845,739 km (0.075 R)
• M5: 2,331,932 km (0.109 R)
• M6: 3,687,887 km (0.102 R)
• M7: 4,317,095 km (0.069 R)
• M8: 5,563,246 km (0.043 R)
• M9: 6,800,570 km (0.076 R)
• M10: 8,332,901 km (0.092 R)
• M11: 8,975,124 km (0.081 R)
• M12: 9,983,414 km (0.092 R)
• M13: 11,065,904 km (0.099 R)
• M14: 11,542,673 km (0.101 R)
• M15: 12,419,765 km (0.076 R)
• M16: 14,829,188 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 489

Radius: 12.9

Gravity: 2.94 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 2.37 AU - 3.13 AU

Year: 2945 Days

Day: 14.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,238,977 km

• M1: 167,699 km (0.082 R)
• M2: 879,935 km (0.11 R)
• M3: 1,563,298 km (0.119 R)
• M4: 1,990,400 km (0.094 R)
• M5: 3,170,428 km (0.079 R)
• M6: 3,885,805 km (0.12 R)
• M7: 8,060,034 km (0.115 R)
• M8: 10,188,662 km (0.077 R)
• M9: 11,343,109 km (0.098 R)
• M10: 13,191,690 km (0.08 R)
• M11: 15,626,395 km (0.043 R)
• M12: 16,381,116 km (0.118 R)
• M13: 17,212,731 km (0.101 R)
• M14: 18,402,034 km (0.097 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 203.8

Radius: 5.6

Gravity: 6.5 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 5.18 AU - 8 AU

Year: 10923 Days

Day: 18.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 36,238,977 km

• M1: 69,713 km (0.085 R)
• M2: 257,458 km (0.107 R)
• M3: 460,612 km (0.085 R)
• M4: 692,788 km (0.084 R)
• M5: 939,175 km (0.102 R)
• M6: 1,128,267 km (0.119 R)
• M7: 1,309,131 km (0.11 R)
• M8: 1,484,759 km (0.113 R)
• M9: 1,855,762 km (0.107 R)
• M10: 2,269,998 km (0.08 R)
• M11: 3,653,778 km (0.037 R)
• M12: 4,998,663 km (0.084 R)
• M13: 5,704,616 km (0.117 R)
• M14: 6,017,724 km (0.088 R)
• M15: 8,259,448 km (0.084 R)
• M16: 8,498,356 km (0.099 R)
• M17: 12,816,947 km (0.114 R)
• M18: 14,358,254 km (0.054 R)
• M19: 15,472,010 km (0.055 R)
• M20: 19,296,031 km (0.104 R)
• M21: 21,462,507 km (0.11 R)
• M22: 28,925,496 km (0.092 R)
• M23: 29,755,166 km (0.048 R)
• M24: 30,222,809 km (0.101 R)
• M25: 31,461,928 km (0.072 R)
• M26: 31,849,835 km (0.071 R)
• M27: 33,635,136 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 158.6

Radius: 4.8

Gravity: 6.88 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 5.94 AU - 9.36 AU

Year: 13662 Days

Day: 19.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 36,238,977 km

• M1: 59,690 km (0.111 R)
• M2: 240,553 km (0.056 R)
• M3: 409,300 km (0.114 R)
• M4: 559,795 km (0.119 R)
• M5: 748,289 km (0.105 R)
• M6: 1,046,288 km (0.113 R)
• M7: 1,245,253 km (0.05 R)
• M8: 1,651,112 km (0.106 R)
• M9: 3,058,229 km (0.088 R)
• M10: 3,312,695 km (0.049 R)
• M11: 5,507,146 km (0.113 R)
• M12: 5,820,105 km (0.12 R)
• M13: 6,619,706 km (0.069 R)
• M14: 7,045,910 km (0.041 R)
• M15: 13,676,387 km (0.12 R)
• M16: 14,191,901 km (0.069 R)
• M17: 18,792,634 km (0.102 R)
• M18: 19,501,279 km (0.105 R)
• M19: 19,789,704 km (0.089 R)
• M20: 21,503,348 km (0.095 R)
• M21: 25,393,341 km (0.115 R)
• M22: 28,232,110 km (0.079 R)
• M23: 29,822,784 km (0.119 R)
• M24: 31,078,958 km (0.102 R)
• M25: 31,373,665 km (0.108 R)
• M26: 35,058,111 km (0.081 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 390 - 10,581 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit