🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.02

Radius: 1.32

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.52 AU - 0.58 AU

Year: 259 Days

Day: 35.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 36.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 17,919,149 km

• M1: 66,870 km (0.101 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 644.6

Radius: 14.3

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.67 AU - 0.77 AU

Year: 388 Days

Day: 12 Hours

Environment

Temp: -134 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 17,919,149 km

• M1: 177,872 km (0.063 R)
• M2: 627,713 km (0.108 R)
• M3: 1,505,403 km (0.069 R)
• M4: 2,050,388 km (0.11 R)
• M5: 2,631,127 km (0.089 R)
• M6: 3,156,665 km (0.115 R)
• M7: 3,667,841 km (0.089 R)
• M8: 4,116,634 km (0.107 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 207.4

Radius: 15

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.91 AU - 1.03 AU

Year: 607 Days

Day: 12 Hours

Environment

Temp: -165 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 17,919,149 km

• M1: 186,549 km (0.084 R)
• M2: 753,225 km (0.084 R)
• M3: 1,257,221 km (0.064 R)
• M4: 1,863,989 km (0.077 R)
• M5: 3,044,167 km (0.065 R)
• M6: 3,676,218 km (0.109 R)
• M7: 4,226,289 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 780.1

Radius: 10.1

Gravity: 7.65 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.29 AU - 1.75 AU

Year: 1192 Days

Day: 14.9 Hours

Environment

Temp: -173 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 17,919,149 km

• M1: 125,662 km (0.097 R)
• M2: 489,933 km (0.108 R)
• M3: 804,837 km (0.061 R)
• M4: 1,270,385 km (0.094 R)
• M5: 1,688,810 km (0.079 R)
• M6: 2,716,548 km (0.098 R)
• M7: 3,605,458 km (0.115 R)
• M8: 4,031,812 km (0.104 R)
• M9: 4,436,923 km (0.115 R)
• M10: 4,811,068 km (0.109 R)
• M11: 5,125,522 km (0.094 R)
• M12: 5,453,590 km (0.069 R)
• M13: 6,039,565 km (0.088 R)
• M14: 8,299,690 km (0.109 R)
• M15: 8,724,997 km (0.11 R)
• M16: 9,314,412 km (0.101 R)
• M17: 10,871,128 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 780.9

Radius: 12

Gravity: 5.42 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.75 AU - 2.57 AU

Year: 2018 Days

Day: 15 Hours

Environment

Temp: -193 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 17,919,149 km

• M1: 152,889 km (0.045 R)
• M2: 532,269 km (0.119 R)
• M3: 1,021,454 km (0.08 R)
• M4: 1,695,393 km (0.111 R)
• M5: 2,183,381 km (0.118 R)
• M6: 2,735,547 km (0.101 R)
• M7: 3,213,512 km (0.112 R)
• M8: 3,894,182 km (0.104 R)
• M9: 4,461,009 km (0.077 R)
• M10: 5,543,648 km (0.094 R)
• M11: 6,159,842 km (0.09 R)
• M12: 6,903,643 km (0.111 R)
• M13: 7,706,534 km (0.115 R)
• M14: 8,130,794 km (0.084 R)
• M15: 9,950,951 km (0.049 R)
• M16: 11,435,560 km (0.077 R)
• M17: 11,908,589 km (0.116 R)
• M18: 12,725,842 km (0.099 R)
• M19: 13,105,671 km (0.095 R)
• M20: 13,623,878 km (0.064 R)
• M21: 16,823,029 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 787.7

Radius: 13.6

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 3.58 AU - 3.9 AU

Year: 4599 Days

Day: 7.5 Hours

Environment

Temp: -199 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 17,919,149 km

• M1: 169,195 km (0.087 R)
• M2: 767,886 km (0.096 R)
• M3: 1,700,629 km (0.111 R)
• M4: 2,130,872 km (0.064 R)
• M5: 2,567,698 km (0.115 R)
• M6: 3,479,796 km (0.116 R)
• M7: 4,474,024 km (0.096 R)
• M8: 5,678,586 km (0.106 R)
• M9: 6,499,279 km (0.12 R)
• M10: 7,328,201 km (0.079 R)
• M11: 9,278,060 km (0.117 R)
• M12: 9,984,910 km (0.088 R)
• M13: 10,549,343 km (0.108 R)
• M14: 11,319,622 km (0.1 R)
• M15: 11,885,700 km (0.066 R)
• M16: 13,435,983 km (0.09 R)
• M17: 13,910,358 km (0.109 R)
• M18: 17,303,088 km (0.031 R)
• M19: 20,930,687 km (0.109 R)
• M20: 22,440,429 km (0.065 R)
• M21: 23,562,562 km (0.094 R)
• M22: 25,999,661 km (0.11 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 706.8

Radius: 6.5

Gravity: 16.73 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 6.2 AU - 9.3 AU

Year: 13718 Days

Day: 15.3 Hours

Environment

Temp: -236 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 17,919,149 km

• M1: 81,531 km (0.061 R)
• M2: 573,109 km (0.108 R)
• M3: 1,405,921 km (0.042 R)
• M4: 2,346,143 km (0.06 R)
• M5: 2,641,300 km (0.061 R)
• M6: 2,913,718 km (0.111 R)
• M7: 4,018,648 km (0.114 R)
• M8: 6,046,447 km (0.107 R)
• M9: 6,360,453 km (0.117 R)
• M10: 7,635,475 km (0.058 R)
• M11: 8,771,671 km (0.052 R)
• M12: 9,747,947 km (0.064 R)
• M13: 11,853,537 km (0.111 R)
• M14: 15,084,402 km (0.073 R)
• M15: 15,882,806 km (0.099 R)
• M16: 17,171,592 km (0.084 R)
• M17: 19,869,888 km (0.076 R)
• M18: 20,828,661 km (0.083 R)
• M19: 22,556,666 km (0.049 R)
• M20: 23,216,842 km (0.102 R)
• M21: 23,889,733 km (0.092 R)
• M22: 25,476,517 km (0.115 R)
• M23: 26,089,121 km (0.092 R)
• M24: 40,224,474 km (0.102 R)
• M25: 40,500,183 km (0.069 R)
• M26: 40,915,915 km (0.108 R)
• M27: 45,082,515 km (0.07 R)
• M28: 46,129,102 km (0.059 R)
• M29: 50,317,543 km (0.11 R)
• M30: 51,605,581 km (0.102 R)
• M31: 52,915,460 km (0.063 R)
• M32: 54,752,521 km (0.119 R)
• M33: 56,459,134 km (0.104 R)
• M34: 56,804,705 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 12.6

Radius: 3.3

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 7.41 AU - 10.37 AU

Year: 16853 Days

Day: 17.4 Hours

Environment

Temp: -228 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 17,919,149 km

• M1: 41,289 km (0.112 R)
• M2: 340,934 km (0.101 R)
• M3: 514,168 km (0.084 R)
• M4: 719,267 km (0.059 R)
• M5: 953,986 km (0.097 R)
• M6: 1,101,489 km (0.084 R)
• M7: 1,246,300 km (0.091 R)
• M8: 2,093,323 km (0.043 R)
• M9: 3,547,414 km (0.108 R)
• M10: 4,119,028 km (0.072 R)
• M11: 9,092,110 km (0.113 R)
• M12: 11,333,385 km (0.104 R)
• M13: 12,100,224 km (0.1 R)
• M14: 12,349,454 km (0.06 R)
• M15: 14,144,927 km (0.094 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: 253 - 14,484 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit