🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.03

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.45 AU - 0.67 AU

Year: 275 Days

Day: 32.2 Hours

Environment

Temp: -117 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.3

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.45 AU - 0.69 AU

Year: 282 Days

Day: 24.7 Hours

Environment

Temp: -117 °C

Axial Tilt: 9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 441.5

Radius: 10.8

Gravity: 3.79 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.73 AU - 1.03 AU

Year: 542 Days

Day: 11.4 Hours

Environment

Temp: -158 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 35,976,334 km

• M1: 134,488 km (0.08 R)
• M2: 475,272 km (0.101 R)
• M3: 944,112 km (0.105 R)
• M4: 1,429,707 km (0.102 R)
• M5: 1,776,924 km (0.098 R)
• M6: 2,198,640 km (0.045 R)
• M7: 2,617,215 km (0.102 R)
• M8: 4,413,436 km (0.039 R)
• M9: 5,211,092 km (0.055 R)
• M10: 5,602,590 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 615.7

Radius: 8.1

Gravity: 9.38 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 3.02 AU - 4.06 AU

Year: 4369 Days

Day: 11.5 Hours

Environment

Temp: -201 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 35,976,334 km

• M1: 102,624 km (0.059 R)
• M2: 383,270 km (0.09 R)
• M3: 761,453 km (0.068 R)
• M4: 1,209,499 km (0.089 R)
• M5: 2,181,137 km (0.064 R)
• M6: 3,146,791 km (0.055 R)
• M7: 3,683,100 km (0.029 R)
• M8: 5,224,706 km (0.1 R)
• M9: 5,550,530 km (0.111 R)
• M10: 5,803,799 km (0.088 R)
• M11: 6,273,088 km (0.117 R)
• M12: 6,831,088 km (0.044 R)
• M13: 7,591,643 km (0.091 R)
• M14: 8,407,550 km (0.112 R)
• M15: 9,598,050 km (0.069 R)
• M16: 10,594,072 km (0.067 R)
• M17: 11,611,637 km (0.119 R)
• M18: 11,887,496 km (0.057 R)
• M19: 12,644,760 km (0.119 R)
• M20: 14,624,688 km (0.094 R)
• M21: 15,054,931 km (0.08 R)
• M22: 19,380,554 km (0.116 R)
• M23: 19,834,434 km (0.101 R)
• M24: 20,295,345 km (0.116 R)
• M25: 21,860,288 km (0.097 R)
• M26: 23,577,522 km (0.069 R)
• M27: 25,075,595 km (0.109 R)
• M28: 25,382,570 km (0.111 R)
• M29: 26,239,915 km (0.118 R)
• M30: 26,636,050 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 859.3

Radius: 9

Gravity: 10.61 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 4.24 AU - 5.92 AU

Year: 7511 Days

Day: 13.3 Hours

Environment

Temp: -215 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 35,976,334 km

• M1: 112,797 km (0.113 R)
• M2: 408,851 km (0.098 R)
• M3: 723,306 km (0.108 R)
• M4: 1,262,157 km (0.1 R)
• M5: 1,574,368 km (0.074 R)
• M6: 1,907,373 km (0.061 R)
• M7: 2,879,609 km (0.112 R)
• M8: 3,891,639 km (0.104 R)
• M9: 4,367,959 km (0.07 R)
• M10: 5,185,810 km (0.073 R)
• M11: 5,863,638 km (0.111 R)
• M12: 6,276,827 km (0.064 R)
• M13: 6,563,008 km (0.101 R)
• M14: 7,514,002 km (0.066 R)
• M15: 8,169,091 km (0.086 R)
• M16: 9,406,714 km (0.096 R)
• M17: 9,734,633 km (0.056 R)
• M18: 10,866,640 km (0.107 R)
• M19: 12,194,022 km (0.078 R)
• M20: 13,040,746 km (0.114 R)
• M21: 13,865,628 km (0.047 R)
• M22: 16,482,095 km (0.027 R)
• M23: 19,260,427 km (0.115 R)
• M24: 19,790,153 km (0.114 R)
• M25: 20,878,926 km (0.09 R)
• M26: 21,357,490 km (0.106 R)
• M27: 22,419,634 km (0.102 R)
• M28: 23,602,355 km (0.105 R)
• M29: 24,472,267 km (0.084 R)
• M30: 26,275,968 km (0.085 R)
• M31: 27,305,052 km (0.037 R)
• M32: 34,713,288 km (0.083 R)
• M33: 39,357,255 km (0.048 R)
• M34: 41,450,428 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 681.2

Radius: 11.3

Gravity: 5.33 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 4.83 AU - 5.99 AU

Year: 8255 Days

Day: 9.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 35,976,334 km

• M1: 141,220 km (0.076 R)
• M2: 563,386 km (0.12 R)
• M3: 1,528,441 km (0.091 R)
• M4: 2,516,535 km (0.071 R)
• M5: 2,907,435 km (0.087 R)
• M6: 3,618,324 km (0.11 R)
• M7: 5,972,845 km (0.101 R)
• M8: 6,895,863 km (0.081 R)
• M9: 7,708,778 km (0.118 R)
• M10: 8,412,636 km (0.096 R)
• M11: 11,243,776 km (0.061 R)
• M12: 14,287,793 km (0.036 R)
• M13: 15,286,060 km (0.043 R)
• M14: 16,197,261 km (0.12 R)
• M15: 16,598,632 km (0.102 R)
• M16: 18,926,375 km (0.086 R)
• M17: 21,948,401 km (0.101 R)
• M18: 22,440,279 km (0.088 R)
• M19: 24,133,278 km (0.082 R)
• M20: 24,922,257 km (0.08 R)
• M21: 28,444,390 km (0.047 R)
• M22: 30,122,429 km (0.102 R)
• M23: 30,934,446 km (0.099 R)
• M24: 33,783,388 km (0.117 R)
• M25: 35,104,038 km (0.104 R)
• M26: 40,978,746 km (0.09 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 181.4

Radius: 3.4

Gravity: 15.69 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 5.63 AU - 7.07 AU

Year: 10497 Days

Day: 16.6 Hours

Environment

Temp: -222 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 35,976,334 km

• M1: 84,523 km (0.095 R)
• M2: 303,983 km (0.072 R)
• M3: 418,575 km (0.069 R)
• M4: 562,638 km (0.071 R)
• M5: 688,300 km (0.11 R)
• M6: 1,092,513 km (0.052 R)
• M7: 1,511,387 km (0.096 R)
• M8: 1,854,116 km (0.077 R)
• M9: 2,295,280 km (0.091 R)
• M10: 3,132,729 km (0.099 R)
• M11: 3,338,725 km (0.069 R)
• M12: 5,499,517 km (0.079 R)
• M13: 5,678,137 km (0.066 R)
• M14: 8,057,192 km (0.082 R)
• M15: 11,026,261 km (0.109 R)
• M16: 11,647,989 km (0.102 R)
• M17: 12,908,351 km (0.1 R)
• M18: 13,652,451 km (0.083 R)
• M19: 13,815,663 km (0.06 R)
• M20: 14,256,976 km (0.077 R)
• M21: 15,342,608 km (0.055 R)
• M22: 15,696,557 km (0.036 R)
• M23: 16,237,652 km (0.116 R)
• M24: 17,484,550 km (0.043 R)
• M25: 22,350,071 km (0.089 R)
• M26: 23,420,594 km (0.075 R)
• M27: 27,007,352 km (0.088 R)
• M28: 29,834,303 km (0.063 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 246.2

Radius: 5

Gravity: 9.85 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 5.6 AU - 7.38 AU

Year: 10846 Days

Day: 18.6 Hours

Environment

Temp: -218 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 35,976,334 km

• M1: 62,233 km (0.074 R)
• M2: 220,657 km (0.099 R)
• M3: 564,882 km (0.049 R)
• M4: 929,003 km (0.089 R)
• M5: 2,378,008 km (0.081 R)
• M6: 5,259,113 km (0.091 R)
• M7: 6,574,228 km (0.115 R)
• M8: 8,015,155 km (0.076 R)
• M9: 8,580,186 km (0.075 R)
• M10: 9,879,593 km (0.067 R)
• M11: 12,066,714 km (0.071 R)
• M12: 13,523,049 km (0.103 R)
• M13: 14,206,412 km (0.113 R)
• M14: 14,972,353 km (0.119 R)
• M15: 19,290,197 km (0.101 R)
• M16: 23,549,098 km (0.075 R)
• M17: 26,594,313 km (0.11 R)
• M18: 26,859,250 km (0.1 R)
• M19: 27,215,293 km (0.111 R)
• M20: 33,247,229 km (0.072 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: 437 - 11,275 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit