🌌 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: 0.58

Radius: 0.8

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.54 AU - 0.58 AU

Year: 275 Days

Day: 39.9 Hours

Environment

Temp: -116 °C

Axial Tilt: 26.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.49

Radius: 1.17

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.53 AU - 0.67 AU

Year: 305 Days

Day: 15.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 29.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 897.4

Radius: 14.4

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.6 AU - 0.8 AU

Year: 384 Days

Day: 8.1 Hours

Environment

Temp: -135 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 69,211,665 km

• M1: 179,368 km (0.098 R)
• M2: 669,151 km (0.066 R)
• M3: 1,180,178 km (0.067 R)
• M4: 1,641,388 km (0.065 R)
• M5: 2,157,500 km (0.091 R)
• M6: 4,086,415 km (0.077 R)
• M7: 4,616,590 km (0.089 R)
• M8: 5,129,861 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 355.1

Radius: 12

Gravity: 2.47 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.66 AU - 1.08 AU

Year: 532 Days

Day: 13 Hours

Environment

Temp: -152 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 69,211,665 km

• M1: 149,299 km (0.097 R)
• M2: 536,308 km (0.091 R)
• M3: 1,193,941 km (0.119 R)
• M4: 1,624,932 km (0.071 R)
• M5: 2,086,442 km (0.117 R)
• M6: 2,503,371 km (0.103 R)
• M7: 2,883,050 km (0.072 R)
• M8: 3,301,625 km (0.059 R)
• M9: 3,736,207 km (0.064 R)
• M10: 4,779,652 km (0.12 R)
• M11: 5,214,084 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 715.7

Radius: 14

Gravity: 3.65 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.82 AU - 0.92 AU

Year: 532 Days

Day: 14.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 69,211,665 km

• M1: 174,282 km (0.103 R)
• M2: 626,366 km (0.07 R)
• M3: 1,106,575 km (0.105 R)
• M4: 1,637,797 km (0.057 R)
• M5: 2,349,435 km (0.109 R)
• M6: 3,038,482 km (0.108 R)
• M7: 3,941,156 km (0.099 R)
• M8: 4,653,092 km (0.091 R)
• M9: 5,196,432 km (0.099 R)
• M10: 6,035,676 km (0.079 R)
• M11: 6,527,105 km (0.036 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 92.8

Radius: 11.4

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 1.69 AU - 2.33 AU

Year: 1869 Days

Day: 9.4 Hours

Environment

Temp: -195 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 69,211,665 km

• M1: 141,819 km (0.112 R)
• M2: 529,427 km (0.08 R)
• M3: 1,142,030 km (0.058 R)
• M4: 1,901,389 km (0.11 R)
• M5: 2,605,995 km (0.105 R)
• M6: 3,044,017 km (0.069 R)
• M7: 3,952,077 km (0.053 R)
• M8: 6,835,576 km (0.036 R)
• M9: 7,247,119 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 990.4

Radius: 11.6

Gravity: 7.36 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 2.93 AU - 4.57 AU

Year: 4764 Days

Day: 7.8 Hours

Environment

Temp: -213 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 69,211,665 km

• M1: 144,212 km (0.111 R)
• M2: 566,078 km (0.098 R)
• M3: 930,499 km (0.069 R)
• M4: 1,295,218 km (0.025 R)
• M5: 2,081,804 km (0.045 R)
• M6: 2,496,938 km (0.097 R)
• M7: 3,285,917 km (0.073 R)
• M8: 3,694,319 km (0.116 R)
• M9: 4,692,885 km (0.082 R)
• M10: 5,443,418 km (0.106 R)
• M11: 6,633,319 km (0.118 R)
• M12: 9,650,708 km (0.077 R)
• M13: 10,539,918 km (0.065 R)
• M14: 11,338,023 km (0.063 R)
• M15: 12,277,348 km (0.047 R)
• M16: 13,267,686 km (0.084 R)
• M17: 14,650,867 km (0.11 R)
• M18: 17,897,740 km (0.101 R)
• M19: 22,423,225 km (0.112 R)
• M20: 25,525,885 km (0.107 R)
• M21: 26,111,560 km (0.057 R)
• M22: 28,011,005 km (0.069 R)
• M23: 29,448,939 km (0.09 R)
• M24: 30,465,756 km (0.078 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 490.1

Radius: 3.7

Gravity: 35.8 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 5.64 AU - 7.88 AU

Year: 11530 Days

Day: 21.3 Hours

Environment

Temp: -230 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 69,211,665 km

• M1: 46,525 km (0.099 R)
• M2: 311,612 km (0.045 R)
• M3: 721,810 km (0.092 R)
• M4: 1,395,299 km (0.114 R)
• M5: 1,574,817 km (0.111 R)
• M6: 2,948,424 km (0.098 R)
• M7: 3,949,234 km (0.116 R)
• M8: 4,394,886 km (0.056 R)
• M9: 4,629,905 km (0.097 R)
• M10: 6,706,024 km (0.087 R)
• M11: 7,057,130 km (0.094 R)
• M12: 8,675,929 km (0.093 R)
• M13: 10,167,419 km (0.1 R)
• M14: 13,279,803 km (0.093 R)
• M15: 16,337,883 km (0.11 R)
• M16: 16,688,540 km (0.106 R)
• M17: 17,404,665 km (0.1 R)
• M18: 19,362,452 km (0.059 R)
• M19: 21,129,652 km (0.097 R)
• M20: 27,463,028 km (0.038 R)
• M21: 28,560,926 km (0.08 R)
• M22: 29,584,026 km (0.104 R)
• M23: 38,663,869 km (0.101 R)
• M24: 40,041,366 km (0.118 R)
• M25: 40,550,448 km (0.09 R)
• M26: 43,560,806 km (0.101 R)
• M27: 46,296,801 km (0.077 R)

Asteroid Belt

Center: 7.3 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 7.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 994.4

Radius: 4

Gravity: 62.15 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 7.22 AU - 8.46 AU

Year: 14401 Days

Day: 20.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 69,211,665 km

• M1: 49,816 km (0.113 R)
• M2: 223,649 km (0.11 R)
• M3: 446,400 km (0.1 R)
• M4: 619,784 km (0.052 R)
• M5: 891,304 km (0.099 R)
• M6: 1,042,099 km (0.052 R)
• M7: 1,456,934 km (0.086 R)
• M8: 1,973,645 km (0.061 R)
• M9: 2,423,934 km (0.085 R)
• M10: 2,989,713 km (0.084 R)
• M11: 3,196,607 km (0.059 R)
• M12: 3,844,815 km (0.072 R)
• M13: 5,941,279 km (0.099 R)
• M14: 6,781,720 km (0.115 R)
• M15: 7,461,942 km (0.049 R)
• M16: 8,038,043 km (0.088 R)
• M17: 10,404,831 km (0.118 R)
• M18: 12,723,748 km (0.117 R)
• M19: 17,016,159 km (0.092 R)
• M20: 17,425,908 km (0.078 R)
• M21: 20,114,780 km (0.098 R)
• M22: 23,367,935 km (0.083 R)
• M23: 27,287,998 km (0.109 R)
• M24: 35,460,679 km (0.116 R)
• M25: 44,812,341 km (0.056 R)
• M26: 46,382,820 km (0.057 R)
• M27: 49,136,169 km (0.096 R)
• M28: 49,467,079 km (0.113 R)
• M29: 49,633,133 km (0.048 R)
• M30: 49,966,287 km (0.076 R)
• M31: 50,805,681 km (0.038 R)
• M32: 56,946,225 km (0.098 R)
• M33: 57,128,584 km (0.094 R)
• M34: 62,200,850 km (0.088 R)
• M35: 62,976,964 km (0.1 R)
• M36: 67,564,981 km (0.086 R)
• M37: 68,179,379 km (0.109 R)
• M38: 69,004,411 km (0.118 R)
• M39: 69,211,604 km (0.115 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 493 - 14,949 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit