🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

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: 1.63

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.53 AU - 0.59 AU

Year: 271 Days

Day: 16 Hours

Environment

Temp: -123 °C

Axial Tilt: 4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.6

Radius: 10.8

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.62 AU - 0.96 AU

Year: 453 Days

Day: 11.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 47.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 36,090,211 km

• M1: 134,339 km (0.11 R)
• M2: 506,090 km (0.077 R)
• M3: 887,714 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 757.2

Radius: 14.5

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.14 AU - 1.2 AU

Year: 817 Days

Day: 7.3 Hours

Environment

Temp: -166 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,090,211 km

• M1: 180,265 km (0.081 R)
• M2: 686,505 km (0.069 R)
• M3: 1,218,026 km (0.074 R)
• M4: 1,956,890 km (0.072 R)
• M5: 2,613,475 km (0.115 R)
• M6: 3,511,660 km (0.113 R)
• M7: 4,374,990 km (0.077 R)
• M8: 5,682,774 km (0.032 R)
• M9: 7,977,755 km (0.07 R)
• M10: 8,585,123 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 249.5

Radius: 12

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.95 AU - 1.47 AU

Year: 859 Days

Day: 8.7 Hours

Environment

Temp: -174 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,090,211 km

• M1: 152,440 km (0.109 R)
• M2: 578,944 km (0.113 R)
• M3: 1,044,642 km (0.109 R)
• M4: 1,501,364 km (0.059 R)
• M5: 1,955,543 km (0.099 R)
• M6: 2,394,164 km (0.082 R)
• M7: 3,612,639 km (0.034 R)
• M8: 4,067,417 km (0.098 R)
• M9: 4,651,297 km (0.108 R)
• M10: 6,588,440 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.1

Radius: 12.1

Gravity: 6.24 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.13 AU - 1.39 AU

Year: 913 Days

Day: 11.4 Hours

Environment

Temp: -172 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 36,090,211 km

• M1: 150,495 km (0.114 R)
• M2: 867,069 km (0.092 R)
• M3: 1,252,882 km (0.079 R)
• M4: 1,739,075 km (0.109 R)
• M5: 2,166,776 km (0.102 R)
• M6: 3,115,525 km (0.104 R)
• M7: 3,616,678 km (0.075 R)
• M8: 4,138,027 km (0.06 R)
• M9: 4,948,698 km (0.109 R)
• M10: 5,654,650 km (0.113 R)
• M11: 6,404,135 km (0.062 R)
• M12: 7,714,762 km (0.115 R)
• M13: 8,719,761 km (0.058 R)
• M14: 9,196,679 km (0.117 R)
• M15: 9,960,077 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 318.6

Radius: 8

Gravity: 4.98 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.38 AU - 2.28 AU

Year: 1598 Days

Day: 10.9 Hours

Environment

Temp: -183 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 36,090,211 km

• M1: 99,483 km (0.077 R)
• M2: 410,048 km (0.084 R)
• M3: 698,921 km (0.113 R)
• M4: 1,127,220 km (0.107 R)
• M5: 2,106,787 km (0.04 R)
• M6: 3,522,581 km (0.057 R)
• M7: 4,315,899 km (0.116 R)
• M8: 4,690,342 km (0.104 R)
• M9: 5,402,877 km (0.1 R)
• M10: 6,569,590 km (0.113 R)
• M11: 6,945,530 km (0.085 R)
• M12: 8,650,048 km (0.09 R)
• M13: 8,987,541 km (0.076 R)
• M14: 9,363,032 km (0.105 R)
• M15: 10,520,919 km (0.036 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 467.2

Radius: 10.4

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 2.35 AU - 3.67 AU

Year: 3372 Days

Day: 13.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,090,211 km

• M1: 129,402 km (0.087 R)
• M2: 458,218 km (0.112 R)
• M3: 872,604 km (0.085 R)
• M4: 1,226,254 km (0.103 R)
• M5: 2,145,233 km (0.12 R)
• M6: 3,170,278 km (0.083 R)
• M7: 3,508,519 km (0.092 R)
• M8: 3,990,523 km (0.107 R)
• M9: 4,627,062 km (0.101 R)
• M10: 7,095,876 km (0.097 R)
• M11: 8,128,400 km (0.071 R)
• M12: 9,474,332 km (0.091 R)
• M13: 10,645,833 km (0.05 R)
• M14: 11,287,010 km (0.113 R)
• M15: 13,048,076 km (0.051 R)
• M16: 13,642,877 km (0.069 R)
• M17: 15,945,039 km (0.114 R)
• M18: 17,986,900 km (0.07 R)
• M19: 18,666,374 km (0.106 R)
• M20: 20,197,209 km (0.066 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 663.4

Radius: 11.8

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 2.5 AU - 4.16 AU

Year: 3924 Days

Day: 9.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,090,211 km

• M1: 147,952 km (0.067 R)
• M2: 616,942 km (0.037 R)
• M3: 1,014,274 km (0.049 R)
• M4: 1,533,378 km (0.096 R)
• M5: 5,026,339 km (0.036 R)
• M6: 6,286,551 km (0.071 R)
• M7: 9,076,851 km (0.108 R)
• M8: 9,896,498 km (0.094 R)
• M9: 10,637,755 km (0.081 R)
• M10: 11,415,664 km (0.108 R)
• M11: 12,653,138 km (0.118 R)
• M12: 13,133,496 km (0.105 R)
• M13: 19,126,537 km (0.114 R)
• M14: 23,857,719 km (0.093 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 413.1

Radius: 15

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 3.13 AU - 4.35 AU

Year: 4670 Days

Day: 14.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 36,090,211 km

• M1: 186,549 km (0.1 R)
• M2: 813,962 km (0.104 R)
• M3: 2,980,438 km (0.091 R)
• M4: 3,727,081 km (0.092 R)
• M5: 4,595,946 km (0.097 R)
• M6: 5,282,002 km (0.113 R)
• M7: 7,560,078 km (0.116 R)
• M8: 8,590,807 km (0.11 R)
• M9: 10,188,961 km (0.1 R)
• M10: 11,058,873 km (0.113 R)
• M11: 12,113,089 km (0.061 R)
• M12: 15,305,807 km (0.053 R)

Planet 10 - Gas Giant

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 939.9

Radius: 9

Gravity: 11.6 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 3.84 AU - 4.58 AU

Year: 5577 Days

Day: 10.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 36,090,211 km

• M1: 112,198 km (0.08 R)
• M2: 1,093,112 km (0.08 R)
• M3: 1,428,510 km (0.045 R)
• M4: 2,133,266 km (0.116 R)
• M5: 2,414,510 km (0.044 R)
• M6: 2,815,731 km (0.12 R)
• M7: 3,705,988 km (0.116 R)
• M8: 5,559,805 km (0.109 R)
• M9: 6,097,759 km (0.071 R)
• M10: 7,059,374 km (0.081 R)
• M11: 11,931,178 km (0.038 R)
• M12: 13,822,394 km (0.086 R)
• M13: 14,809,740 km (0.076 R)
• M14: 15,229,662 km (0.039 R)
• M15: 18,395,003 km (0.11 R)
• M16: 20,021,880 km (0.076 R)
• M17: 26,868,226 km (0.061 R)
• M18: 27,224,120 km (0.041 R)
• M19: 31,943,185 km (0.11 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: 318 - 14,286 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit