🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.82

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.41 AU - 0.65 AU

Year: 249 Days

Day: 39.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 14.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 532.8

Radius: 12.9

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.57 AU - 0.81 AU

Year: 370 Days

Day: 13.5 Hours

Environment

Temp: -141 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 34,042,038 km

• M1: 160,369 km (0.082 R)
• M2: 642,672 km (0.057 R)
• M3: 1,074,711 km (0.092 R)
• M4: 1,478,775 km (0.112 R)
• M5: 1,891,216 km (0.059 R)
• M6: 2,364,394 km (0.062 R)
• M7: 3,420,256 km (0.075 R)
• M8: 4,336,543 km (0.03 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 835.2

Radius: 11.3

Gravity: 6.54 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.7 AU - 1.04 AU

Year: 524 Days

Day: 5.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 34,042,038 km

• M1: 140,622 km (0.115 R)
• M2: 657,632 km (0.099 R)
• M3: 1,045,839 km (0.094 R)
• M4: 1,415,196 km (0.05 R)
• M5: 1,889,870 km (0.059 R)
• M6: 2,380,252 km (0.108 R)
• M7: 2,797,331 km (0.071 R)
• M8: 3,165,940 km (0.118 R)
• M9: 4,145,507 km (0.092 R)
• M10: 5,146,466 km (0.11 R)
• M11: 6,110,624 km (0.101 R)
• M12: 7,065,208 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 404

Radius: 13.3

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 1.35 AU - 1.43 AU

Year: 1058 Days

Day: 12.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,042,038 km

• M1: 165,455 km (0.114 R)
• M2: 653,593 km (0.099 R)
• M3: 1,322,595 km (0.066 R)
• M4: 1,905,578 km (0.112 R)
• M5: 2,691,714 km (0.117 R)
• M6: 3,128,690 km (0.074 R)
• M7: 3,670,384 km (0.064 R)
• M8: 4,419,121 km (0.12 R)
• M9: 5,103,980 km (0.097 R)
• M10: 6,058,714 km (0.08 R)
• M11: 6,472,651 km (0.105 R)
• M12: 7,084,058 km (0.092 R)
• M13: 8,704,502 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.3

Radius: 10

Gravity: 7.14 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.19 AU - 1.73 AU

Year: 1139 Days

Day: 13.6 Hours

Environment

Temp: -172 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,042,038 km

• M1: 124,765 km (0.065 R)
• M2: 441,763 km (0.094 R)
• M3: 902,973 km (0.092 R)
• M4: 1,245,701 km (0.085 R)
• M5: 1,570,628 km (0.119 R)
• M6: 2,024,508 km (0.088 R)
• M7: 3,044,466 km (0.117 R)
• M8: 3,676,517 km (0.117 R)
• M9: 4,776,959 km (0.095 R)
• M10: 5,261,806 km (0.066 R)
• M11: 5,589,276 km (0.077 R)
• M12: 8,088,607 km (0.12 R)
• M13: 10,789,746 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 376.7

Radius: 9.6

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 1.84 AU - 2.34 AU

Year: 1951 Days

Day: 6 Hours

Environment

Temp: -191 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,042,038 km

• M1: 119,828 km (0.106 R)
• M2: 540,348 km (0.066 R)
• M3: 944,711 km (0.071 R)
• M4: 1,257,370 km (0.116 R)
• M5: 1,558,062 km (0.072 R)
• M6: 2,135,210 km (0.119 R)
• M7: 2,686,628 km (0.113 R)
• M8: 3,032,498 km (0.113 R)
• M9: 3,664,699 km (0.112 R)
• M10: 4,003,837 km (0.032 R)
• M11: 4,570,963 km (0.086 R)
• M12: 5,619,794 km (0.118 R)
• M13: 7,231,860 km (0.104 R)
• M14: 10,957,296 km (0.066 R)
• M15: 11,773,352 km (0.081 R)
• M16: 12,477,659 km (0.086 R)
• M17: 12,936,625 km (0.062 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 285.8

Radius: 15

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 3.71 AU - 5.59 AU

Year: 6474 Days

Day: 5.5 Hours

Environment

Temp: -211 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,042,038 km

• M1: 186,549 km (0.098 R)
• M2: 770,878 km (0.084 R)
• M3: 1,308,383 km (0.062 R)
• M4: 1,928,765 km (0.091 R)
• M5: 2,727,169 km (0.112 R)
• M6: 5,653,453 km (0.099 R)
• M7: 6,874,172 km (0.109 R)
• M8: 7,362,609 km (0.112 R)
• M9: 9,434,689 km (0.104 R)
• M10: 10,080,653 km (0.092 R)
• M11: 12,818,593 km (0.07 R)
• M12: 14,596,414 km (0.083 R)
• M13: 17,474,378 km (0.105 R)
• M14: 18,512,587 km (0.1 R)
• M15: 19,786,263 km (0.109 R)
• M16: 21,805,386 km (0.105 R)
• M17: 24,858,379 km (0.113 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 600.4

Radius: 5.7

Gravity: 18.48 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 8.05 AU - 8.39 AU

Year: 15217 Days

Day: 21.7 Hours

Environment

Temp: -232 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 34,042,038 km

• M1: 73,901 km (0.062 R)
• M2: 454,628 km (0.025 R)
• M3: 681,717 km (0.12 R)
• M4: 1,029,383 km (0.083 R)
• M5: 1,373,159 km (0.071 R)
• M6: 2,692,163 km (0.088 R)
• M7: 3,116,423 km (0.096 R)
• M8: 3,950,281 km (0.12 R)
• M9: 4,187,843 km (0.118 R)
• M10: 4,790,124 km (0.055 R)
• M11: 4,991,931 km (0.12 R)
• M12: 5,631,462 km (0.12 R)
• M13: 6,009,646 km (0.12 R)
• M14: 6,986,221 km (0.086 R)
• M15: 7,970,724 km (0.117 R)
• M16: 8,742,500 km (0.062 R)
• M17: 9,095,251 km (0.039 R)
• M18: 9,301,098 km (0.096 R)
• M19: 9,562,894 km (0.091 R)
• M20: 10,321,954 km (0.074 R)
• M21: 11,003,821 km (0.119 R)
• M22: 11,715,308 km (0.086 R)
• M23: 13,560,748 km (0.102 R)
• M24: 17,656,737 km (0.066 R)
• M25: 21,041,090 km (0.111 R)
• M26: 21,492,427 km (0.101 R)
• M27: 21,674,637 km (0.07 R)
• M28: 24,934,076 km (0.104 R)
• M29: 25,848,567 km (0.073 R)
• M30: 27,636,711 km (0.108 R)
• M31: 40,540,125 km (0.113 R)
• M32: 41,520,291 km (0.088 R)
• M33: 48,357,960 km (0.099 R)
• M34: 48,671,069 km (0.109 R)
• M35: 55,736,875 km (0.091 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 45.2

Radius: 3.1

Gravity: 4.7 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 9.89 AU - 11.95 AU

Year: 23300 Days

Day: 16.4 Hours

Environment

Temp: -227 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,042,038 km

• M1: 40,391 km (0.1 R)
• M2: 250,427 km (0.066 R)
• M3: 415,583 km (0.095 R)
• M4: 801,097 km (0.032 R)
• M5: 1,374,954 km (0.086 R)
• M6: 2,009,399 km (0.111 R)
• M7: 2,150,170 km (0.097 R)
• M8: 3,035,042 km (0.036 R)
• M9: 9,036,160 km (0.104 R)
• M10: 11,160,450 km (0.112 R)
• M11: 11,902,904 km (0.097 R)
• M12: 18,446,165 km (0.042 R)
• M13: 19,763,823 km (0.101 R)
• M14: 22,662,432 km (0.078 R)
• M15: 23,528,454 km (0.116 R)
• M16: 24,909,841 km (0.095 R)
• M17: 28,011,752 km (0.097 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 166 - 18,051 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit